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[10-Q] Rein Therapeutics, Inc. Quarterly Earnings Report

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
10-Q
Rhea-AI Filing Summary

Rein Therapeutics (RNTX) filed its Q3 2025 report, highlighting clinical and financing updates alongside continued losses. The FDA lifted the full clinical hold on the Phase 2 RENEW trial of LTI-03 for idiopathic pulmonary fibrosis on October 29, 2025, allowing U.S. enrollment to proceed. The study targets up to 120 patients with initial topline data expected in Q3 2026. The company also received authorization to initiate sites in Germany and Poland and previously had MHRA clearance in the U.K.

Financially, Rein reported a Q3 net loss of $5.581M and a nine‑month net loss of $17.904M. Cash and cash equivalents were $4.048M as of September 30, 2025. Management states there is substantial doubt about the company’s ability to continue as a going concern, estimating runway into December 2025. During 2025, it raised modest funds via warrant exercises and exchanges ($1.679M and $3.101M) and a private placement ($0.5M), established an ATM with limited sales, and received three $1.0M Pre‑Paid Advances from Yorkville (net $0.95M each).

As of November 10, 2025, 26,286,382 common shares were outstanding.

Positive
  • FDA lifted full clinical hold on LTI-03 Phase 2 RENEW on October 29, 2025, enabling U.S. enrollment.
Negative
  • Going concern disclosure: cash $4.048M at September 30, 2025 with runway only into December 2025.

Insights

Runway into December 2025 and going concern risk despite FDA progress.

Rein Therapeutics posted a Q3 net loss of $5.581M with cash of $4.048M as of September 30, 2025. Management disclosed substantial doubt about continuing as a going concern, citing runway only into December 2025. Financing this year included Yorkville Pre‑Paid Advances (three tranches of $1.0M each at 95% of face) and smaller equity-related proceeds.

On the clinical side, the FDA lifted the full clinical hold on LTI‑03’s Phase 2 RENEW trial on October 29, 2025, following EMA/MHRA authorizations. The study plans up to 120 IPF patients with topline data anticipated in Q3 2026. This removes a key regulatory barrier but does not address near‑term liquidity needs.

Key items to watch are additional financing transactions and the pace of U.S. site activations for RENEW; the balance between trial execution and available cash is the principal constraint.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2025

OR

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number: 001-38130

Rein Therapeutics, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware

13-4196017

(State or other jurisdiction of

incorporation or organization)

(I.R.S. Employer

Identification No.)

 

 

12407 N. Mopac Expy.

Suite 250 #390

Austin, TX

78758

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (737) 802-1989

Securities registered pursuant to Section 12(b) of the Act:

 

Title of each class

Trading Symbol

Name of each exchange on which registered

Common Stock, $0.001 par value per share

RNTX

The Nasdaq Capital Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Accelerated filer

 

 

 

 

Non-accelerated filer

Smaller reporting company

 

 

 

 

 

 

Emerging growth company

 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No

As of November 10, 2025, the registrant had 26,286,382 shares of common stock, $0.001 par value per share, outstanding.

 

 

 


 

Table of Contents

 

Page

PART I.

FINANCIAL INFORMATION

 

4

Item 1.

Financial Statements (Unaudited)

 

4

 

Condensed Consolidated Balance Sheets

 

4

 

Condensed Consolidated Statements of Operations and Comprehensive Loss

 

5

 

 

Condensed Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders’ Equity

 

6

 

Condensed Consolidated Statements of Cash Flows

 

7

 

 

Notes to Condensed Consolidated Financial Statements

 

8

Item 2.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

 

26

Item 3.

Quantitative and Qualitative Disclosures About Market Risk

 

35

Item 4.

Controls and Procedures

 

35

PART II.

OTHER INFORMATION

 

37

Item 1.

Legal Proceedings

 

37

Item 1A.

Risk Factors

 

37

Item 2.

 

Unregistered Sales of Equity Securities and Use of Proceeds

 

37

Item 3.

 

Defaults Upon Senior Securities

 

37

Item 4.

 

Mine Safety Disclosures

 

37

Item 5.

 

Other Information

 

37

Item 6.

Exhibits

 

38

 

Signatures

 

39

 

1


 

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS AND INDUSTRY DATA

This Quarterly Report on Form 10-Q of Rein Therapeutics, Inc. (“Rein,” “we,” “us,” “our,” or the “Company”) contains forward-looking statements that involve substantial risks and uncertainties. All statements, other than statements of historical facts, contained in this Quarterly Report on Form 10-Q, including statements regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects, plans and objectives of management and expected market growth are forward-looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “would,” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.

These forward-looking statements include, among other things, statements about:

our plans to develop and commercialize LTI-03, including the potential benefits thereof;
our ability to secure sufficient additional capital in the near term or implement other strategies needed to alleviate our current substantial doubt about our ability to continue as a going concern;
our expectations regarding our ability to fund our operating expenses, our planned activities, and capital expenditure requirements with our cash, cash equivalents and investments
our Phase 2 clinical trial of LTI-03 and our ability to re-start and complete such clinical trial, subject to obtaining additional funding;
our decision to temporarily delay further clinical development of LTI-01 until additional funds are raised;
our unproven approach to drug research and development in the area of fibrotic diseases, with a focus on Caveolin-1, or Cav1, related peptides, and our ability to develop marketable products;
our future clinical trials for LTI-03 and LTI-01, whether conducted by us or by any future collaborators, including our ability to enroll patients in our clinical trials, the timing of initiation of these trials and of the anticipated results;
the success of our remediation efforts related to the material weaknesses identified in our internal controls over financial reporting;
the timing of and our ability to obtain and maintain marketing approvals for LTI-03 and LTI-01;
the rate and degree of market acceptance and clinical utility of any products for which we receive marketing approval;
our commercialization, marketing and manufacturing capabilities and strategy;
our intellectual property position and strategy, and our ability to obtain, maintain and enforce intellectual property rights for our platform and development candidates;
our ability to identify additional product candidates with significant commercial potential;
our plans to enter into collaborations for the development and commercialization of LTI-03, LTI-01 and any additional product candidates;
our reliance on third-party manufacturing and supply vendors and contract research organizations, or CROs;
potential benefits of any future collaboration;
developments relating to our competitors and our industry;
the impact of general economic conditions, including inflation and the imposition of new or revised tariffs or other trade restrictions; and
the impact of government laws and regulations.

We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have included important factors in the cautionary statements included in our Annual Report on Form 10-K filed with the SEC on April 7, 2025 (“Annual Report on Form 10-K”) and subsequently filed by reports, particularly in the “Risk Factors” section, which could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, collaborations, joint ventures or investments that we may make or enter into.

2


 

You should read this Quarterly Report on Form 10-Q and the documents that we reference herein and have filed or incorporated by reference hereto completely and with the understanding that our actual future results may be materially different from what we expect. We do not assume any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

This Quarterly Report on Form 10-Q includes or incorporates by reference statistical and other industry and market data that we obtained from industry publications and research, surveys and studies conducted by third parties. Industry publications and third-party research, surveys and studies generally indicate that their information has been obtained from sources believed to be reliable, although they do not guarantee the accuracy or completeness of such information.

Effective on January 10, 2025, we amended our Restated Certificate of Incorporation, as amended, to effect a change in our name from “Aileron Therapeutics, Inc.” to “Rein Therapeutics, Inc.” Unless the context otherwise requires, references in this Quarterly Report on Form 10-Q to “we,” “us,” “our” and the “Company” refer to Rein Therapeutics, Inc. and its wholly owned subsidiaries.

 

3


 


PART I—FINANCIAL INFORMATION

Item 1. Financial Statements.

REIN THERAPEUTICS, INC.

Condensed Consolidated BALANCE SHEETS

(UNAUDITED)

(In thousands, except share and per share data)

 

 

 

September 30,
2025

 

 

December 31,
2024

 

Assets

 

 

 

 

 

 

Current assets:

 

 

 

 

 

 

Cash and cash equivalents

 

$

4,048

 

 

$

12,865

 

Prepaid expenses and other current assets

 

 

1,126

 

 

 

792

 

Total current assets

 

 

5,174

 

 

 

13,657

 

Property and equipment, net

 

 

 

 

 

1

 

Goodwill

 

 

6,330

 

 

 

6,330

 

Intangible assets

 

 

42,200

 

 

 

42,200

 

Other non-current assets

 

 

2

 

 

 

2

 

Total assets

 

$

53,706

 

 

$

62,190

 

Liabilities, Convertible Preferred Stock and Stockholders’ Equity

 

 

 

 

 

 

Current liabilities:

 

 

 

 

 

 

Accounts payable

 

$

4,123

 

 

$

911

 

Accrued expenses and other current liabilities

 

 

1,621

 

 

 

4,838

 

Total current liabilities

 

 

5,744

 

 

 

5,749

 

Deferred tax liability

 

 

1,772

 

 

 

1,772

 

Other long-term liability

 

 

 

 

 

277

 

Total liabilities

 

 

7,516

 

 

 

7,798

 

Commitments and contingencies (Note 12)

 

 

 

 

 

 

Convertible preferred stock, $0.001 par value, 5,000,000 shares authorized at September 30, 2025 and at December 31, 2024; 24,610 shares issued and 12,232 shares outstanding at September 30, 2025 and at December 31, 2024

 

 

45,005

 

 

 

45,005

 

Stockholders’ equity:

 

 

 

 

 

 

Common stock, $0.001 par value; 100,000,000 shares authorized at September 30, 2025 and at December 31, 2024; 25,140,092 shares and 21,666,012 shares issued and outstanding at September 30, 2025 and December 31, 2024, respectively

 

 

111

 

 

 

108

 

Additional paid-in capital

 

 

370,422

 

 

 

360,697

 

Accumulated other comprehensive loss

 

 

(44

)

 

 

(18

)

Accumulated deficit

 

 

(369,304

)

 

 

(351,400

)

Total liabilities, convertible preferred stock and stockholders’ equity

 

$

53,706

 

 

$

62,190

 

 

The accompanying notes are an integral part of these condensed consolidated financial statements.

4


 

REIN THERAPEUTICS, INC.

Condensed Consolidated STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(UNAUDITED)

(In thousands, except share and per share data)

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Revenue

 

$

 

 

$

 

 

$

 

 

$

 

Operating expenses:

 

 

 

 

 

 

 

 

 

 

 

 

Research and development

 

 

1,681

 

 

 

3,722

 

 

 

9,028

 

 

 

10,926

 

General and administrative

 

 

3,811

 

 

 

2,349

 

 

 

8,944

 

 

 

11,389

 

Total operating expenses

 

 

5,492

 

 

 

6,071

 

 

 

17,972

 

 

 

22,315

 

Loss from operations

 

 

(5,492

)

 

 

(6,071

)

 

 

(17,972

)

 

 

(22,315

)

Other income, net

 

 

(89

)

 

 

224

 

 

 

68

 

 

 

413

 

Net loss

 

$

(5,581

)

 

$

(5,847

)

 

$

(17,904

)

 

$

(21,902

)

Net loss per share—basic and diluted

 

$

(0.21

)

 

$

(0.27

)

 

$

(0.74

)

 

$

(1.31

)

Weighted average common shares outstanding—basic and diluted

 

 

26,361,386

 

 

 

21,663,089

 

 

 

24,171,173

 

 

 

16,687,473

 

Comprehensive loss:

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

$

(5,581

)

 

$

(5,847

)

 

$

(17,904

)

 

$

(21,902

)

Other comprehensive gain:

 

 

 

 

 

 

 

 

 

 

 

 

Unrealized (loss) gain on investments, net of tax of $0

 

 

 

 

 

(4

)

 

 

(33

)

 

 

37

 

Foreign currency translation adjustments

 

 

 

 

 

 

 

 

7

 

 

 

 

Total other comprehensive gain (loss)

 

 

 

 

 

(4

)

 

 

(26

)

 

 

37

 

Total comprehensive loss

 

$

(5,581

)

 

$

(5,851

)

 

$

(17,930

)

 

$

(21,865

)

 

The accompanying notes are an integral part of these condensed consolidated financial statements.

5


 

REIN THERAPEUTICS, INC.

Condensed Consolidated STATEMENT OF CHANGES IN CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY

(UNAUDITED)

(In thousands, except share data)

 

 

 

Series X Non-Voting Convertible Preferred Stock

 

 

Common Stock

 

 

 

 

 

Accumulated

 

 

 

 

 

Total Convertible

 

 

 

Shares

 

 

Amount

 

 

Shares

 

 

Amount

 

 

Additional
Paid-in
Capital

 

 

Other
Comprehensive
Loss

 

 

Accumulated
Deficit

 

 

Preferred Stock and Stockholders’
Equity

 

Balances at December 31, 2024

 

 

12,232

 

 

$

45,005

 

 

 

21,666,012

 

 

$

108

 

 

$

360,697

 

 

$

(18

)

 

$

(351,400

)

 

$

54,392

 

Issuance of common stock

 

 

 

 

 

 

 

 

317,772

 

 

 

 

 

 

738

 

 

 

 

 

 

 

 

 

738

 

Stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

264

 

 

 

 

 

 

 

 

 

264

 

Exercise of stock options

 

 

 

 

 

 

 

 

21,533

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unrealized gain on short-term investments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(45

)

 

 

 

 

 

(45

)

Foreign currency translation adjustments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

31

 

 

 

 

 

 

31

 

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(5,501

)

 

 

(5,501

)

Balances at March 31, 2025

 

 

12,232

 

 

$

45,005

 

 

 

22,005,317

 

 

$

108

 

 

$

361,699

 

 

$

(32

)

 

$

(356,901

)

 

$

49,879

 

Issuance of common stock

 

 

 

 

 

 

 

 

16,127

 

 

 

 

 

 

33

 

 

 

 

 

 

 

 

 

33

 

Issuance of warrants

 

 

 

 

 

 

 

 

 

 

 

 

 

 

481

 

 

 

 

 

 

 

 

 

481

 

Stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

256

 

 

 

 

 

 

 

 

 

256

 

Issuance of common stock in connection with warrant exercises

 

 

 

 

 

 

 

 

1,035,758

 

 

 

1

 

 

 

1,594

 

 

 

 

 

 

 

 

 

1,595

 

Warrant exchanges

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2,984

 

 

 

 

 

 

 

 

 

2,984

 

Common Stock to be issued upon exercises of warrants

 

 

 

 

 

 

 

 

 

 

 

22

 

 

 

 

 

 

 

 

 

 

 

 

22

 

Exercise of stock options

 

 

 

 

 

 

 

 

(11,081

)

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

1

 

Common stock issuance cost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(404

)

 

 

 

 

 

 

 

 

(404

)

Unrealized gain on short-term investments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

 

 

12

 

Foreign currency translation adjustments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(24

)

 

 

 

 

 

(24

)

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(6,822

)

 

 

(6,822

)

Balances at June 30, 2025

 

 

12,232

 

 

$

45,005

 

 

 

23,046,121

 

 

$

131

 

 

$

366,644

 

 

$

(44

)

 

$

(363,723

)

 

$

48,013

 

Issuance of common stock for Pre-Paid Advances

 

 

 

 

 

 

 

 

1,880,872

 

 

 

2

 

 

 

2,009

 

 

 

 

 

 

 

 

 

2,011

 

Issuance of common stock for commitment fee

 

 

 

 

 

 

 

 

213,099

 

 

 

 

 

 

300

 

 

 

 

 

 

 

 

 

300

 

Stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1,447

 

 

 

 

 

 

 

 

 

1,447

 

Common Stock to be issued upon exercises of warrants

 

 

 

 

 

 

 

 

 

 

 

(22

)

 

 

22

 

 

 

 

 

 

 

 

 

 

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(5,581

)

 

 

(5,581

)

Balances at September 30, 2025

 

 

12,232

 

 

$

45,005

 

 

 

25,140,092

 

 

$

111

 

 

$

370,422

 

 

$

(44

)

 

$

(369,304

)

 

$

46,190

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balances at December 31, 2023

 

 

24,610

 

 

$

91,410

 

 

 

4,885,512

 

 

$

91

 

 

$

295,376

 

 

$

(63

)

 

$

(288,517

)

 

$

98,297

 

Issuance of common stock in connection with conversion of Series X non-voting convertible preferred stock

 

 

(11,957

)

 

 

(44,826

)

 

 

11,957,000

 

 

 

12

 

 

 

44,814

 

 

 

 

 

 

 

 

 

 

Stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

150

 

 

 

 

 

 

 

 

 

150

 

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(7,113

)

 

 

(7,113

)

Balances at March 31, 2024

 

 

12,653

 

 

$

46,584

 

 

 

16,842,512

 

 

$

103

 

 

$

340,340

 

 

$

(63

)

 

$

(295,630

)

 

$

91,334

 

Issuance of common stock in connection with conversion of Series X non-voting convertible preferred stock

 

 

(421

)

 

 

(1,579

)

 

 

421,000

 

 

 

 

 

 

1,578

 

 

 

 

 

 

 

 

 

(1

)

Issuance of common stock

 

 

 

 

 

 

 

 

4,273,505

 

 

 

4

 

 

 

10,933

 

 

 

 

 

 

 

 

 

10,937

 

Issuance of warrants

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7,225

 

 

 

 

 

 

 

 

 

7,225

 

Stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

326

 

 

 

 

 

 

 

 

 

326

 

Exercises of stock options

 

 

 

 

 

 

 

 

88,068

 

 

 

 

 

 

101

 

 

 

 

 

 

 

 

 

101

 

Unrealized gain on investments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

41

 

 

 

 

 

 

41

 

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(8,942

)

 

 

(8,942

)

Balances at June 30, 2024

 

 

12,232

 

 

$

45,005

 

 

 

21,625,085

 

 

$

107

 

 

$

360,503

 

 

$

(22

)

 

$

(304,572

)

 

$

101,021

 

Stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

508

 

 

 

 

 

 

 

 

 

508

 

Issuance cost in connection with the Offering

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(488

)

 

 

 

 

 

 

 

 

(488

)

Exercises of stock options

 

 

 

 

 

 

 

 

40,856

 

 

 

1

 

 

 

41

 

 

 

 

 

 

 

 

 

42

 

Unrealized gain on investments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(4

)

 

 

 

 

 

(4

)

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(5,847

)

 

 

(5,847

)

Balances at September 30, 2024

 

 

12,232

 

 

$

45,005

 

 

 

21,665,941

 

 

$

108

 

 

$

360,564

 

 

$

(26

)

 

$

(310,419

)

 

$

95,232

 

 

The accompanying notes are an integral part of these condensed consolidated financial statements.

6


 

REIN THERAPEUTICS, INC.

Condensed Consolidated STATEMENTS OF CASH FLOWS

(UNAUDITED)

(In thousands)

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

Cash flows from operating activities:

 

 

 

 

 

 

Net loss

 

$

(17,904

)

 

$

(21,902

)

Adjustments to reconcile net loss to net cash used in operating activities:

 

 

 

 

 

 

Commitment fee related to Pre-Paid Advance agreement

 

300

 

 

 

 

Original issue discount related to Pre-Paid Advance agreement

 

100

 

 

 

 

Depreciation and amortization expense

 

 

1

 

 

 

63

 

Stock-based compensation expense

 

 

1,967

 

 

 

984

 

Changes in operating assets and liabilities:

 

 

 

 

 

 

Prepaid expenses and other current assets

 

 

(334

)

 

 

(89

)

Other assets

 

 

 

 

 

2,191

 

Accounts payable

 

 

3,212

 

 

 

(111

)

Operating lease liabilities

 

 

 

 

 

(48

)

Accrued expenses and other current liabilities

 

 

(3,206

)

 

 

1,433

 

Other long-term liabilities

 

 

(277

)

 

 

 

Net cash used in operating activities

 

 

(16,141

)

 

 

(17,479

)

Cash flows from financing activities:

 

 

 

 

 

 

Proceeds from issuance of common stock, net of offering costs

 

 

367

 

 

 

10,645

 

Proceeds from Pre-Paid Advances

 

 

1,900

 

 

 

 

Proceeds from issuance of common stock in connection with stock option exercises

 

 

1

 

 

 

142

 

Proceeds from issuance of common stock in connection with warrant exercises

 

 

1,595

 

 

 

 

Proceeds from issuance of warrants, net of offering costs

 

 

481

 

 

 

7,030

 

Proceeds from warrant exchanges, net of offering costs

 

 

2,984

 

 

 

 

Proceeds from warrant exercises with common stock subscribed

 

 

22

 

 

 

 

Net cash provided by financing activities

 

 

7,350

 

 

 

17,817

 

Effect of exchange rate changes on cash and cash equivalents

 

 

(26

)

 

 

1

 

Net (decrease) increase in cash, cash equivalents and restricted cash

 

 

(8,817

)

 

 

339

 

Cash, cash equivalents and restricted cash at beginning of period

 

 

12,865

 

 

 

17,338

 

Cash, cash equivalents and restricted cash at end of period

 

$

4,048

 

 

$

17,677

 

 

 

 

 

 

 

 

Cash and cash equivalents at end of period

 

$

4,048

 

 

$

17,652

 

Restricted cash at end of period

 

 

 

 

 

25

 

Cash, cash equivalents and restricted cash at end of period

 

$

4,048

 

 

$

17,677

 

 

 

 

 

 

 

 

Supplemental disclosure of non-cash investing and financing activities:

 

 

 

 

 

 

Unrealized (loss) gain on short-term investments

 

$

(33

)

 

$

37

 

Foreign currency translation adjustments

 

$

8

 

 

$

 

Issuance of common stock for Pre-Paid Advances

 

$

2,011

 

 

$

 

Conversion of Series X non-voting convertible preferred stock into common stock shares

 

$

 

 

$

46,405

 

 

The accompanying notes are an integral part of these condensed consolidated financial statements.

7


 

REIN THERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(Amounts in thousands, except share and per share data)

1. Nature of the Business

On January 10, 2025, Aileron Therapeutics, Inc., or Aileron, amended its Restated Certificate of Incorporation, as amended, to effect a change of the Company’s name from “Aileron Therapeutics, Inc.” to “Rein Therapeutics, Inc.”, or Rein, or the Company.

Prior to the Lung Acquisition (as defined below), the Company was a clinical stage chemoprotection oncology company. The Company’s product candidate, ALRN-6924, was a MDM2/MDMX dual inhibitor that leverages its proprietary peptide drug technology. In February 2023, the Company decided to terminate further development of ALRN-6924. On October 31, 2024, the Company entered into an exclusive option agreement with Advancium Health Network, or Advancium, for the sale of ALRN-6924. In July 2025, the option agreement was terminated. In August 2025, the Company entered into a letter agreement with Rients LLC, or Rients, for Rients to evaluate the legacy ALRN-6924 compound, or the Compound Asset. During the term of the letter agreement, Rients shall pay the Company for all fees and expenses incurred by the Company to maintain the Compound Asset.

The Company is a clinical stage biopharmaceutical company focused on developing novel therapies for the treatment of fibrosis indications with no approved or limited effective treatments. The Company currently has two product candidates in clinical development, LTI-03 and LTI-01, and multiple candidates in preclinical development focused on fibrosis indications.

On October 31, 2023, the Company acquired Lung Therapeutics, Inc., or Lung Therapeutics or Lung, pursuant to an Agreement and Plan of Merger, dated October 31, 2023, or the Lung Acquisition Agreement, by and among the Company, AT Merger Sub I, Inc., a Delaware corporation and its wholly owned subsidiary, or the First Merger Sub, AT Merger Sub II, LLC, a Delaware limited liability company and its wholly owned subsidiary, or the Second Merger Sub, and Lung. Its principal offices are in Austin, Texas. Following the Lung Acquisition, the Company shifted its operating disease focus to advancing a pipeline of first-in-class medicines to address significant unmet medical needs in orphan pulmonary and fibrosis indications with the potential to greatly improve patient outcomes over currently available treatments. Following expiration of the lease on March 31, 2024, Rein currently operates and expects to operate virtually for the foreseeable future.

The Company is subject to risks and uncertainties common to clinical-stage companies in the biotechnology industry, including, but not limited to the risk that the Company never achieves profitability, the need for substantial additional financing, the risk of relying on third parties, risks of clinical trial failures, dependence on key personnel, protection of proprietary technology, and compliance with government regulations. The Company’s lead product candidate, LTI-03, is being developed for the treatment of Idiopathic Pulmonary Fibrosis, or IPF, and has been evaluated in a healthy volunteer Phase 1a clinical trial and in a Phase 1b clinical trial in IPF patients. A Phase 2 multi-center, randomized, double-blind, and placebo-controlled study evaluating the safety, tolerability, and efficacy of LTI-03 in patients with IPF will enroll up to 120 IPF patients with interim topline data expected in the second half of 2026. The Company’s second product candidate, LTI-01, is in development for loculated pleural effusion, or LPE. The Company has completed Phase 1b and Phase 2a clinical trials in LPE patients. In June 2024, the Company decided to temporarily delay clinical development of LTI-01 in an effort to focus its resources on clinical development of LTI-03 and until additional funds are raised. In the fourth quarter of 2024, the Company determined that the temporary delay of further clinical development of LTI-01 may not be a short-term measure.

On June 10, 2025, the U.S. Food and Drug Administration, or the FDA, advised the Company that it had put the Phase 2 RENEW trial of LTI-03 on clinical hold and the Company paused enrollment and patient dosing at its clinical trial sites in the United States. On July 8, 2025, the Company received a formal Clinical Hold Letter from the FDA, or the Letter. In the Letter, the FDA noted that no No-Observed-Adverse-Effect Level (NOAEL) had been identified and minimal mucus cell hyperplasia in the bronchioles had been observed in the 26-week rat study conducted in support of the RENEW trial. The FDA stated that without a NOAEL, there is inadequate nonclinical support for the Phase 2 RENEW trial. The FDA requested that the Company conduct a rat inhalation toxicity study using doses low enough to identify a NOAEL with a dosing duration sufficient to support the Phase 2 RENEW trial.

The Company is seeking to activate sites, enroll patients and initiate the RENEW trial in the United Kingdom and Europe and other jurisdictions. In October 2025, the Company received authorization from the European Medicines Agency, or the EMA, to initiate the Company’s Phase 2 RENEW trial, at sites in Germany and Poland, of its lead candidate, LTI-03, for the treatment of IPF. The Company had previously received regulatory clearance from the U.K.’s Medicines and Healthcare products Regulatory Agency, or the MHRA.

On October 29, 2025, the FDA notified the Company that it had lifted the full clinical hold on the Company’s Phase 2 RENEW trial evaluating in patients with IPF. The FDA’s decision follows a review of the Company’s submission, which addressed all of the agency’s concerns. In its correspondence, the FDA confirmed that Study LTI-03-2001 may proceed and that any prior Full Clinical Hold concerns have been fully resolved. The Company expects to resume patient recruitment in late 2025 or early 2026 across approximately 20 U.S. clinical sites located in Alabama, California, Colorado, Connecticut, Florida, Indiana, Kansas, Massachusetts, Michigan, Missouri, North Carolina, New York, Ohio, South Carolina, and Texas. The U.S. enrollment complements the Company’s broader global RENEW study, which includes approximately 30 additional sites in the United Kingdom, Germany, Poland, and Australia. The trial is designed to evaluate the safety, tolerability, and efficacy of LTI-03 in up to 120 patients with IPF. Key secondary

8


 

endpoints include changes in lung function (FVC) and imaging-based measures of fibrosis progression. Initial topline data is expected in the third quarter of 2026.

Liquidity and Going Concern

In accordance with Accounting Standards Update, or ASU, No. 2014-15, Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern (Subtopic 205-40), the Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date the accompanying condensed consolidated financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of management’s plans that have not been fully implemented as of the date the condensed consolidated financial statements are issued. When substantial doubt exists, management evaluates whether the mitigating effect of its plans sufficiently alleviates substantial doubt about the company’s ability to continue as a going concern. The mitigating effect of management’s plans, however, is only considered if both (1) it is probable that the plans will be effectively implemented within one year after the date that the condensed consolidated financial statements are issued, and (2) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued. Generally, to be considered probable of being effectively implemented, the plans must have been approved before the date that the condensed consolidated financial statements are issued.

The Company’s condensed consolidated financial statements have been prepared assuming that the Company will continue to operate as a going concern, which contemplates the continuity of operations, realization of assets and the satisfaction of liabilities in the ordinary course of business. Through September 30, 2025, the Company has financed its operations primarily through $145,467 in net proceeds from sales of common stock and warrants, $746 in net proceeds from sales of common stock under its “at-the-market” offering programs, $131,211 from sales of preferred stock prior to its initial public offering, or IPO, $34,910 from a collaboration agreement in 2010, $17,536 in net proceeds in connection with a private placement following the Lung Acquisition in 2023, $17,675 in net proceeds in connection with an underwritten offering of the Company's common stock and accompanying warrants to purchase common stock in May 2024, $5,082 in net proceeds from the April 2025 Transactions (as defined below) and $1,900 in net proceeds from the Yorkville Transactions described below. As of September 30, 2025, the Company had $4,048 in cash and cash equivalents.

In May 2024, the Company completed an underwritten follow-on public offering, or the Offering, pursuant to which the Company issued and sold 4,273,505 shares of the Company’s common stock, par value $0.001 per share, or the Offering Shares, and accompanying warrants, or the Offering Warrants, to purchase 4,273,505 shares of common stock, or the Offering Warrant Shares. All of the Offering Shares and Offering Warrants were sold by the Company. Each Offering Share was offered and sold together with an accompanying Offering Warrant at a combined public offering price of $4.68, and the underwriter purchased each Offering Share with an accompanying Offering Warrant from the Company, after the underwriting discount, at a combined price of $4.35. Net proceeds from the Offering were $17,675, after deducting underwriting discounts and commissions and offering expenses, and excluding any proceeds that may be received from exercise of the Offering Warrants. The Offering Warrants to purchase 890,138 shares of common stock were exercised in April 2025 as part of April 2025 Transactions (as defined below). As of September 30, 2025, Offering Warrants to purchase 3,383,367 shares of common stock remained outstanding.

In April 2025, the Company entered into privately negotiated letter agreements with certain holders of the PIPE Warrants, as described in Note 3, and certain holders of the Offering Warrants, who agreed to exercise for cash the PIPE Warrants and the Offering Warrants, or the Warrant Exercises as further discussed in Note 9. The total gross proceeds for the Warrant Exercises were $1,679. Also in April 2025, the Company entered into privately negotiated letter agreements with additional holders of the PIPE Warrants who, in exchange for pre-funded warrants, or the Exchange Pre-Funded Warrants, surrendered PIPE Warrants to the Company for cancellation and made an aggregate cash payment into which the Exchange Pre-Funded Warrants are exercisable, or the Warrant Exchanges as further discussed in Note 9. The total gross proceeds for the Warrant Exchanges were $3,101. In addition, an entity affiliated with Bios Partners, or the Bios Purchaser, purchased additional pre-funded warrants in a private placement, or the Placement Pre-Funded Warrants, pursuant to a subscription agreement underlying the Placement Pre-Funded Warrants, or the Private Placement. Total gross proceeds for the Private Placement were $500. The Warrant Exercises, Warrant Exchanges and Private Placement are collectively referred to as the April 2025 Transactions.

On May 15, 2025, the Company entered into an “at the market offering” agreement, or the Wainwright Sales Agreement, with H.C. Wainwright & Co., LLC, or H.C. Wainwright, as agent and/or principal, pursuant to which the Company could offer and sell shares of its common stock having an aggregate offering price of up to $13,702 from time to time through or to H.C. Wainwright by any method permitted that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended. As of September 30, 2025, the Company had issued and sold 16,127 shares of common stock pursuant to the Wainwright Sales Agreement for total net proceeds of $34, after deducting transaction fees of $1 paid by the Company.

Prior to entering into the Wainwright Sales Agreement, in May 2025, the Company terminated the equity distribution agreement, dated July 26, 2024, or the Equity Distribution Agreement, with Citizens JMP Securities, LLC, or Citizens JMP, as agent and/or principal, under which the Company could offer and sell up to $50,000 of shares of its common stock from time to time through or to Citizens JMP by any method that was deemed an “at the market” offering as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended. In January 2025, the Company issued and sold 317,772 shares of common stock pursuant to the Equity Distribution Agreement for total net proceeds of $712, after deducting transaction fees of $22 paid by the Company. The Company did not issue or sell any other shares of common stock pursuant to the Equity Distribution Agreement during the nine months ended September 30,

9


 

2025. The Company did not sell any shares of common stock pursuant to the Equity Distribution Agreement during the year ended December 31, 2024.

In July 2025, the Company entered into a Pre-Paid Advance Agreement, or the PPA, and a Standby Equity Purchase Agreement, or the SEPA, with YA II PN, Ltd., a Cayman Islands exempt limited partnership, or Yorkville. The PPA and the SEPA are collectively referred to as the Yorkville Transactions. In accordance with the terms of the PPA, the Company may request pre-paid advances of up to $6,000 from Yorkville (each, a “Pre-Paid Advance”) over a 12-month period, subject to certain limitations and conditions set forth in the PPA. Each Pre-Paid Advance will be purchased by Yorkville at 95% of the face amount of the Pre-Paid Advance. At any time there is an outstanding balance under any Pre-Paid Advances, Yorkville may provide written notice requiring the Company to issue and sell shares of its common stock to Yorkville, which shall be offset against and reduce the amounts outstanding under the Pre‑Paid Advances. An initial Pre-Paid Advance of $1,000 was purchased on July 29, 2025 by Yorkville, or the First Advance, for net proceeds of $950. On September 8, 2025, Yorkville purchased a second Pre-Paid Advance, or the Second Advance, of $1,000, for which the Company received net proceeds of $950. On October 23, 2025, Yorkville purchased a third Pre-Paid Advance, or the Third Advance, of $1,000, for which the Company received net proceeds of $950. As of the date of this report, Yorkville has converted the entire initial Pre‑Paid Advance, in the aggregate amount of $1,007 of principal and accrued interest, into 953,765 shares of the Company’s common stock, at a weighted average price per share of approximately $1.056, converted the Second Advance, in the aggregate amount of $1,004 of principal and accrued interest, into 927,107 shares of the Company’s common stock, at a weighted average price per share of approximately $1.082, and converted the Third Advance, in the aggregate amount of $1,001 of principal and accrued interest, into 846,290 shares of the Company’s common stock, at a weighted average price per share of approximately $1.183. Separately, under the SEPA, the Company may sell up to $15,000 of its common stock to Yorkville over a 36-month term. The Company has the sole discretion to initiate such sales, subject to volume and pricing limitations. In connection with entry into the SEPA, the Company paid Yorkville a $300 commitment fee through the issuance of 213,099 shares of common stock and paid $25 in structuring and legal fees. As of the date of this report, the Company has not elected to sell any shares of common stock to Yorkville under the SEPA.

The Company has entered into various arrangements with certain business advisors, consultants, and investment institutions to assist the Company with fundraising and to provide certain advisory services. In connection with these arrangements, the Company may be required to pay such business advisors, consultants, and investment institutions certain contingent fees related to their services to the extent that certain conditions are met, such as a the successful fundraising. There are no contingent fees payable under these arrangements as of September 30, 2025.

Management believes that, based on the Company’s current operating plan, the Company’s cash and cash equivalents of $4,048 as of September 30, 2025, together with the proceeds received by the Company pursuant to the PPA in October 2025, will enable the Company to fund its planned operating expense and capital expenditure requirements into December 2025. The funds are not sufficient to enable the Company to complete the Phase 2 RENEW clinical trial of LTI-03 or maintain its current level of operations past December 2025. The Company’s estimate as to how long it expects its existing cash and cash equivalents to be able to continue to fund its operations is based on assumptions that may prove to be wrong, and the Company could use its available capital resources sooner than it currently expects. In addition, the Company’s cash and cash equivalents will not be sufficient to enable the Company to fund its operating expenses and capital expenditure requirements for at least twelve months from the date of issuance of these condensed consolidated financial statements, which raises substantial doubt about the Company’s ability to continue as a going concern.

Since its inception, the Company has not generated any revenue from product sales and has never generated an operating profit. The Company has incurred significant losses on an aggregate basis. The Company’s net losses were $17,904 and $21,902 for the nine months ended September 30, 2025 and 2024, respectively. As of September 30, 2025, the Company had an accumulated deficit of $369,304. These losses have resulted primarily from costs incurred in connection with research and development activities, licensing and patent investment and general and administrative costs associated with the Company’s operations. The Company expects to continue to incur operating losses for the foreseeable future. The Company expects to finance its operations primarily through utilization of its current financial resources and through the sale of additional equity or debt financings, collaborations, licensing arrangements or other sources.

The Company plans to seek to raise additional funds through equity or debt financings, strategic collaborations, licensing arrangements or other sources. However, there is no assurance that such funding will be available to the Company, will be obtained on terms favorable to the Company or will provide the Company with sufficient funds to meet its objectives. The Company’s funding estimates are based on assumptions that may prove to be wrong, and the Company could use its available capital resources sooner than it currently expects. If additional funds are not available, the Company could be forced to delay, reduce or eliminate its research and development programs or future commercialization efforts and its business could be materially harmed. The Company’s future viability is dependent on its ability to raise additional capital, enter into a financing, consummate a successful acquisition, merger, business combination, or sale of assets or other transaction. If the Company becomes unable to continue as a going concern, it may have to liquidate its assets and the values it receives for its assets in liquidation or dissolution could be significantly lower than the values reflected in its consolidated financial statements. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

10


 

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America, or U.S. GAAP. Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standards Codification, or the ASC, and as amended by ASUs of the Financial Accounting Standards Board, or the FASB.

Principles of Consolidation

The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, Lung Therapeutics, LLC, Lung Therapeutics Australia Pty Ltd, and Lung Therapeutics Limited. Lung Therapeutics Limited is currently inactive. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Significant estimates and assumptions reflected in these condensed consolidated financial statements include, but are not limited to, the accrual for research and development expenses, the prepaid research and development expenses, valuation of intangibles and goodwill, the valuation of warrants, and the value of stock-based compensation. Estimates are periodically reviewed in light of changes in circumstances, facts and experience. Changes in estimates are recorded in the period in which they become known. Actual results could differ from those estimates.

Unaudited Interim Financial Information

The accompanying unaudited condensed consolidated financial statements as of September 30, 2025 and for the three and nine months ended September 30, 2025 and 2024 have been prepared by the Company pursuant to the rules and regulations of the United States Securities and Exchange Commission, or the SEC, for interim financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. However, the Company believes that the disclosures are adequate to make the information presented not misleading. These financial statements should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 that was filed with the SEC on April 7, 2025 (the “Annual Report on Form 10-K”).

The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of September 30, 2025, the results of its operations for the three and nine months ended September 30, 2025 and 2024 and its cash flows for the nine months ended September 30, 2025 and 2024. The results for the nine months ended September 30, 2025 are not necessarily indicative of results to be expected for the year ending December 31, 2025, any other interim periods, or any future year or period. The accompanying balance sheet as of December 31, 2024 has been derived from the Company’s audited consolidated financial statements for the year ended December 31, 2024 included in the Company’s Annual Report on Form 10-K.

The Company’s significant accounting policies are described in Note 2 to the consolidated financial statements included in the Annual Report on Form 10-K.

Concentration of Credit Risk and of Significant Suppliers

Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents. Periodically, the Company maintains balances in operating accounts above federally insured limits. The Company deposits its cash in financial institutions that it believes have high credit quality. The Company has not experienced any losses on such accounts and does not believe it is exposed to any significant credit risk on cash and cash equivalents.

The Company is dependent on third-party manufacturers to supply products for research and development activities of its programs, including preclinical and clinical testing. In particular, the Company relied on a small number of manufacturers to supply it with its requirements for the active pharmaceutical ingredients and formulated drugs related to these programs. These programs could have been adversely affected by a significant interruption in the supply of active pharmaceutical ingredients and formulated drugs.

Recently Adopted Accounting Pronouncements

In March 2024, the FASB issued ASU 2024-01, Compensation—Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards, to improve GAAP by adding an illustrative example that includes four fact patterns to demonstrate how an entity should apply the scope guidance in paragraph 718-10-15-3 to determine whether a profits interest award should be accounted for in accordance with Topic 718, Compensation—Stock Compensation. For public business entities, the amendments in this ASU are

11


 

effective for annual periods beginning after December 15, 2024, and interim periods within those annual periods. The Company adopted this ASU on January 1, 2025. Adoption of this ASU did not have material effect on the Company’s condensed consolidated financial statements and related disclosures.

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Segment Disclosures, to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The Company adopted this ASU for the year ended December 31, 2024 (refer to Note 13).

Accounting Pronouncements Not Yet Adopted

In January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date, to clarify the effective date of ASU 2024-03, Income Statement—Reporting Comprehensive Income: Disaggregation of Income Statement Expenses. The FASB clarified that all public business entities should initially adopt the disclosure requirements in the ASU 2024-03 in the first annual reporting period beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027. The Company is currently assessing the effect of this ASU on its consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income (Topic 220): Disaggregation of Income Statement Expenses, to enhance the transparency and decision usefulness of financial information presented in the income statement by requiring disaggregated information about certain income statement expense line items. The amendments apply to all public business entities. This ASU is effective for annual periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. The Company is currently assessing the effect of this ASU on its consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-04, Debt—Debt with Conversion and Other Options (Subtopic 470-20): Induced Conversions of Convertible Debt Instruments, to improve relevance and consistency in application of the induced conversion guidance in Subtopic 470-20. The ASU 2024-04 is effective for all entities for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of the annual reporting period for all entities that have adopted the amendments in ASU 2020-06, Debt—Debt with Conversion and Other Options and Derivatives and Hedging—Contracts in Entity's Own Equity: Accounting for Convertible Instruments and Contracts in an Entity's Own Equity. The Company is currently assessing the effect of this ASU on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures by requiring disaggregated information about an entity's effective tax rate reconciliation, as well as information on taxes paid. This ASU is effective for annual periods beginning after December 15, 2024. The Company is currently assessing the effect of this ASU on its consolidated financial statements and related disclosures.

3. Business Acquisition

On October 31, 2023, the Company acquired 100% of Lung, pursuant to the Lung Acquisition Agreement. At the closing of the Lung Acquisition, the Company issued to the stockholders of Lung 344,345 shares of its common stock (excluding 221 fractional shares from the total 344,566 shares pursuant to the Lung Acquisition Agreement) and 19,903 shares of its newly designated Series X non-voting convertible preferred stock, or the Series X Preferred Stock, (excluding 238 fractional shares from the total 20,141 shares pursuant to the Lung Acquisition Agreement). Each share of Series X Preferred Stock is convertible into 1,000 shares of common stock. The Company paid $290 cash in lieu of fractional shares of both common stock and Series X Preferred Stock. In addition, the Company assumed all of Lung’s stock options (1,780,459) and all warrants (726,437) exercisable for Lung common stock immediately outstanding prior to the closing of the Lung Acquisition, each subject to adjustment pursuant to the terms of the Lung Acquisition Agreement.

Immediately following the closing of the Lung Acquisition, on October 31, 2023, the Company entered into a Stock and Warrant Purchase Agreement, or the Purchase Agreement, with a group of accredited investors, pursuant to which the Company issued and sold (i) an aggregate of 4,707 shares of Series X Preferred Stock, and (ii) warrants, or the PIPE Warrants, to purchase up to an aggregate of 2,353,500 shares of the Company’s common stock, or the PIPE Warrant Shares, for an aggregate purchase price of approximately $18,429, which included the conversion of certain convertible promissory notes in the aggregate principal amount of $1,553 issued by Lung to Bios Partners, the majority stockholder of Lung prior to the closing of the Lung Acquisition, at a 10% discount to the per share price of the Series X Preferred Stock, or collectively, the PIPE Financing. The PIPE Financing closed on November 2, 2023. Each share of Series X Preferred Stock is convertible into 1,000 shares of common stock.

The Lung Acquisition was accounted for under the acquisition method of accounting under ASC 805, Business Combinations. Under the acquisition method, the total purchase price of the acquisition is allocated to the net tangible and identifiable intangible assets acquired and liabilities assumed based on the fair values as of the date of the acquisition. Consideration transferred is the sum of the acquisition-date fair values of the assets transferred, the liabilities incurred by the acquirer to the former owners of the acquiree, and the

12


 

equity interests issued by the acquirer to the former owners of the acquiree (except for the measurement of share-based payment awards). The Company recorded the assets acquired and liabilities assumed as of the date of the Lung Acquisition.

4. Fair Value of Financial Assets

The following tables present information about the Company’s assets that are measured at fair value on a recurring basis and indicate the level of the fair value hierarchy utilized to determine such fair values:

 

 

 

September 30, 2025

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Cash equivalents:

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds

 

$

3,997

 

 

$

 

 

$

 

 

$

3,997

 

Treasury bills

 

 

4

 

 

 

 

 

 

 

 

 

4

 

 

 

$

4,001

 

 

$

 

 

$

 

 

$

4,001

 

 

 

 

December 31, 2024

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Cash equivalents:

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds

 

$

2,539

 

 

$

 

 

$

 

 

$

2,539

 

Treasury bills

 

 

8,341

 

 

 

 

 

 

 

 

 

8,341

 

 

 

$

10,880

 

 

$

 

 

$

 

 

$

10,880

 

 

During the nine months ended September 30, 2025 and the year ended December 31, 2024, there were no transfers between levels.

5. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

 

 

 

September 30,
2025

 

 

December 31,
2024

 

Prepaid research and development

 

$

129

 

 

$

116

 

Other current assets

 

 

997

 

 

 

676

 

Total prepaid expenses and other current assets

 

$

1,126

 

 

$

792

 

 

6. Goodwill and Indefinite-Lived Intangible Assets

$6,330 of goodwill and $79,200 of indefinite-lived intangible assets acquired in the Lung Acquisition were recorded at fair value on the Lung Acquisition date. In the fourth quarter of 2024, an assessment of recoverability and impairment was performed at the individual indefinite-lived intangible asset level. The Company concluded that the fair value of the LTI-01 was less than its carrying value and recognized an impairment loss for this asset of approximately $37,000 in the year ended December 31, 2024.

The Company performed a qualitative assessment of goodwill and indefinite-lived intangible assets for potential impairment as of September 30, 2025, and concluded that there were no qualitative factors that would have triggered impairment, therefore no impairment for indefinite-lived intangible asset or goodwill was recognized for the nine months ended September 30, 2025.

7. Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

 

 

 

September 30,
2025

 

 

December 31,
2024

 

External research and development services

 

$

542

 

 

$

2,720

 

Payroll and payroll-related costs

 

 

710

 

 

 

1,474

 

Professional fees

 

 

255

 

 

 

522

 

Other

 

 

114

 

 

 

122

 

Total accrued expenses and other current liabilities

 

$

1,621

 

 

$

4,838

 

 

13


 

 

8. Preferred Stock

The Company is authorized to issue 5,000,000 shares of preferred stock, par value $0.001 per share. As of September 30, 2025 and December 31, 2024, the Company had issued 24,610 shares of Series X Preferred Stock, of which 12,232 shares of Series X Preferred Stock remained outstanding

On October 31, 2023, under the terms of the Lung Acquisition Agreement, at the closing of the Lung Acquisition, the Company issued to the stockholders of Lung 344,345 shares of the common stock, and 19,903 shares of Series X Preferred Stock.

Immediately following the closing of the Lung Acquisition, on October 31, 2023, the Company entered into the Purchase Agreement with a group of accredited investors, pursuant to which the Company issued and sold an aggregate of 4,707 shares of Series X Preferred Stock and PIPE Warrants to purchase up to an aggregate of 2,353,500 shares of common stock. Refer to Note 3 for more details on the PIPE Financing in connection with the Purchase Agreement. Since the Series X Preferred Stock was sold as a unit with the PIPE Warrants according to the Purchase Agreement, the proceeds received were allocated to each instrument on a relative fair value basis. Total gross proceeds of $18,429 less $893 of issuance costs were allocated as follows: $16,795 to the Series X Preferred Stock and $741 to the PIPE Warrants. The Series X Preferred Stock and the PIPE Warrants issued in the PIPE Financing were recorded at par value of $0.001.

At the 2023 annual meeting of stockholders, or the 2023Annual Meeting, the Company’s stockholders approved the issuance, in accordance with Nasdaq Listing Rule 5635(a), of shares of common stock, upon conversion of the Company’s outstanding Series X Preferred Stock. On March 5, 2024, based upon then existing beneficial ownership limitations, 11,957 shares of Series X Preferred Stock were automatically converted into 11,957,000 shares of common stock. On May 8, 2024, the Bios Entities (as defined below) provided notice to the Company and converted 421 shares of Series X Preferred Stock held by them into 421,000 shares of common stock. As of September 30, 2025 and December 31, 2024, 12,232 shares of Series X Preferred Stock (which are convertible into 12,232,000 shares of common stock) remained convertible at the option of the holder thereof, subject to certain beneficial ownership limitations (as described below).

The Company evaluated the Series X Preferred Stock for liability classification in accordance with the provisions of ASC 480, Distinguishing Liabilities from Equity, or ASC 480, and determined that equity treatment was appropriate because the Series X Preferred Stock did not meet the definition of the liability instruments. Specifically, the Series X Preferred Stock is not mandatorily redeemable and does not embody an obligation to buy back the shares outside of the Company’s control in a manner that could require the transfer of assets. The Company determined that the Series X Preferred Stock would be recorded as temporary equity, based on the guidance of ASC 480, given that it is contingently redeemable.

Each share of Series X Preferred Stock is convertible into 1,000 shares of Common Stock. The preferences, rights, and limitations initially applicable to the Series X Preferred Stock are set forth in the Certificate of Designation of Series X Non-Voting Convertible Preferred Stock, or the Certificate of Designation.

The Series X Preferred Stock has the following characteristics:

Voting

Except as otherwise required by law, the Series X Preferred Stock does not have voting rights. However, as long as any shares of Series X Preferred Stock are outstanding, the Company will not, without the affirmative vote of the holders of a majority of the then outstanding shares of the Series X Preferred Stock, (i) alter or change adversely the powers, preferences or rights given to the Series X Preferred Stock or alter or amend the Certificate of Designation, amend or repeal any provision of, or add any provision to, the Certificate of Incorporation or by-laws of the Company, or file any articles of amendment, certificate of designations, preferences, limitations and relative rights of any series of preferred stock, if such action would adversely alter or change the preferences, rights, privileges or powers of, or restrictions provided for the benefit of the Series X Preferred Stock, (ii) issue further shares of Series X Preferred Stock or increase or decrease (other than by conversion) the number of authorized shares of Series X Preferred Stock, or (iii) enter into any agreement with respect to any of the foregoing.

Dividends

Holders of Series X Preferred Stock are entitled to receive dividends on shares of Series X Preferred Stock equal, on an as-if-converted-to-common-stock basis, and in the same form as dividends actually paid on shares of the common stock. Such dividends are not cumulative. Since the Company’s inception, no dividends have been declared or paid.

Liquidation, dissolution or winding up

The Series X Preferred Stock does not have a preference upon any liquidation, dissolution or winding-up of the Company.

14


 

Upon liquidation, dissolution or winding up of the Company, the Series X preferred stockholders shall be entitled to receive an equivalent amount of distributions as would be paid on the common stock underlying the Series X Preferred Stock, determined on an as-converted basis, pari passu with any distributions to the common stock shareholders.

Conversion

The Series X Preferred Stock is convertible into common stock at a rate of 1,000 shares of common stock for every one share of Series X Preferred Stock that is converted. The Series X Preferred Stock is subject to certain beneficial ownership limitations, including that a holder of Series X Preferred Stock is prohibited from converting shares of Series X Preferred Stock into shares of common stock if, as a result of such conversion, such holder (together with its affiliates and any other persons acting as a group together with the holder or any of its affiliates) would beneficially own more than a specified percentage (to be initially set at 19.99% and thereafter adjusted by the holder to a number not to exceed 19.99%) of the total number of shares of common stock issued and outstanding immediately after giving effect to such conversion.

Redemption

Shares of the Series X Preferred Stock are not redeemable at the election of the holder.

Maturity

The Series X Preferred Stock shall be perpetual unless converted.

9. Common Stock

As of September 30, 2025 and December 31, 2024, the Company was authorized to issue 100,000,000 shares of common stock, par value $0.001 per share.

As of September 30, 2025 and December 31, 2024, the Company had 25,140,092 and 21,666,012 shares of common stock issued and outstanding, respectively.

Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders. Common stockholders are entitled to receive dividends, as may be declared by the Company’s Board, if any. As of September 30, 2025 and December 31, 2024, no dividends had been declared.

In the event of liquidation or dissolution, the holders of the common stock are entitled to receive proportionately all assets available for distribution to stockholders after the payment of all debts and other liabilities and subject to the prior rights of any outstanding preferred stock.

Issuance of Common Stock and Warrants

Advisory Agreements

The Company has entered into various arrangements with certain business advisors, consultants, and investment institutions to assist the Company with fundraising and to provide certain advisory services. In connection with these arrangements, the Company may be required to pay such business advisors, consultants, and investment institutions certain contingent fees related to their services to the extent that certain conditions are met, such as a the successful fundraising. There are no contingent fees payable under these arrangements as of September 30, 2025.

Wainwright Sales Agreement

On May 15, 2025, the Company entered into the Wainwright Sales Agreement with H.C. Wainwright, as agent and/or principal, pursuant to which the Company could offer and sell shares of its common stock having an aggregate offering price of up to $13,702 from time to time through or to H.C. Wainwright by any method permitted that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended. As of September 30, 2025, the Company had issued and sold 16,127 shares of common stock pursuant to the Wainwright Sales Agreement for total net proceeds of $34, after deducting transaction fees of $1 paid by the Company.

Prior to entering into the Wainwright Sales Agreement, in May 2025, the Company terminated its “at the market offering” pursuant to the Equity Distribution Agreement with Citizens JMP. In the three months ended March 31, 2025, the Company issued and sold 317,772 shares of common stock pursuant to the Equity Distribution Agreement for total net proceeds of $712, after deducting transaction fees of $22 paid by the Company. The Company did not issue or sell any other shares of common stock pursuant to the Equity Distribution Agreement during the nine months ended September 30, 2025. The Company did not sell any shares of common stock pursuant to the Equity Distribution Agreement during the year ended December 31, 2024.

Warrant Exercises and Exchanges

15


 

On April 21, 2025, the Company entered into privately negotiated letter agreements with certain holders of its outstanding warrants issued on November 2, 2023, or the PIPE Warrants, and May 1, 2024, or the Offering Warrants. Pursuant to these agreements, certain holders agreed to exercise the PIPE Warrants for an aggregate of 159,500 shares of the Company’s common stock and the Offering Warrants for an aggregate of 890,138 shares of common stock, at a reduced exercise price of $1.60 per share. The original exercise prices were $4.89 per share for the PIPE Warrants and $4.68 per share for the Offering Warrants. The exercise of the PIPE Warrants was completed on April 24, 2025, and the exercise of the Offering Warrants was completed in May, 2025 (collectively, the “Warrant Exercises”). The Company received total gross proceeds of $1,679 from the Warrant Exercises.

Separately, in April 2025, the Company entered into agreements with additional holders of the PIPE Warrants who agreed to surrender warrants representing an aggregate of 1,939,000 shares of common stock for cancellation. In exchange, these holders received pre-funded warrants (the “Exchange Pre-Funded Warrants”) exercisable for the same number of shares at an exercise price of $0.001 per share and paid $1.599 per share in cash by April 24, 2025 (the “Warrant Exchanges”). The Company received total gross proceeds of $3,101 from the Warrant Exchanges.

As part of the Warrant Exchanges, entities affiliated with Bios Equity Partners, LP (“Bios Partners”) surrendered PIPE Warrants representing an aggregate of 1,300,500 shares and provided the associated cash consideration of $2,079 for the issuance of Exchange Pre-Funded Warrants.

In addition, on April 21, 2025, an entity affiliated with Bios Partners agreed to purchase additional pre-funded warrants to acquire 312,695 shares of the Company’s common stock in a private placement at a price of $1.599 per share, resulting in total proceeds of $500 (the “Bios Pre-Funded Warrants”). The Exchange Pre-Funded Warrants and the Bios Pre-Funded Warrants are collectively referred to as the “Pre-Funded Warrants.”

The Company assessed the Pre-Funded Warrants for appropriate classification under U.S. GAAP and determined that they are freestanding instruments that do not meet the definition of a liability pursuant to ASC 480 and do not meet the definition of a derivative pursuant to ASC 815, Derivatives and Hedging. The Pre-Funded Warrants are indexed to the Company’s common stock and meet all other conditions for equity classification under ASC 480 and ASC 815. Accordingly, the Pre-Funded Warrants are classified as equity and accounted for as a component of additional paid-in capital at the time of issuance. The Pre-Funded Warrants were initially recognized at their fair value, calculated as the fair value of the underlying common stock less the exercise price of $0.001 per share. The fair value of the common stock was determined based on the quoted market price of the Company’s common stock as of the issuance date. The Pre-Funded Warrants will not be remeasured subsequent to initial recognition.

The repricing of the PIPE Warrants and the Offering Warrants and issuance of the Exchange Pre-Funded Warrants is considered a modification under the guidance of ASU 2021-04. The modification is consistent with the “Equity Issuance” classification under that guidance as the reason for the modification was to induce the holder to cash exercise their warrants, resulting in the imminent exercise of the PIPE Warrants and the Offering Warrants, which raised equity capital and generated net proceeds for the Company of approximately $4,758. The total fair value of the consideration of the modification includes the incremental fair value of the PIPE Warrants and the Offering Warrants (determined by comparing the fair values immediately prior to and immediately after the modification) and the initial fair value of the PIPE Warrants and the Offering Warrants. The fair values of the PIPE Warrants and the Offering Warrants were calculated using the Black-Scholes model. The Company determined that the total fair value of the consideration related to the modification of PIPE Warrants and the Offering Warrants, including the initial fair value of the Exchange Pre-Funded Warrants was $4,757. The net effect of the modification in the amount of $490, as well as the value of the replaced PIPE warrants of $1,385 and the fair value of the Exchange Pre-Funded Warrants of 5,652 were recorded in additional paid-in capital, as both the original warrants (the PIPE Warrants and the Offering Warrants) and the replacement instruments (the Exchange Pre-Funded Warrants) are equity-classified.

The Offering Warrants

In May 2024, the Company completed the Offering pursuant to which the Company issued and sold 4,273,505 shares of the Company’s common stock and accompanying the Offering Warrants to purchase 4,273,505 shares of common stock. All of the Offering Shares and the Offering Warrants were sold by the Company. Each Offering Share was offered and sold together with an accompanying Offering Warrant at a combined public offering price of $4.68, and the underwriter purchased each Offering Share and accompanying Offering Warrant from the Company, after the underwriting discount, at a combined price of $4.35. Net proceeds from the Offering were approximately $17,675, after deducting underwriting discounts and commissions and offering expenses, and excluding any proceeds that may be received from exercise of the Offering Warrants. The Offering closed on May 3, 2024.

Each Offering Warrant has an exercise price per share of common stock equal to $4.68. Each Offering Warrant may be exercised until May 1, 2027. Each Offering Warrant is exercisable solely by means of a cash exercise, except that an Offering Warrant is exercisable via cashless exercise if at the time of exercise, a registration statement registering the issuance of Offering Warrant Shares is not then effective or the prospectus contained therein is not available for the issuance of Offering Warrant Shares.

16


 

The Offering Warrants include certain rights upon “fundamental transactions” as described in the Offering Warrants, including the right of the holders thereof to receive from the Company or a successor entity the same type or form of consideration (and in the same proportion) that is being offered and paid to the holders of common stock in such fundamental transaction (as described in such Offering Warrants) of the unexercised portion of the applicable Warrants immediately prior to such fundamental transaction. A holder of Offering Warrants (together with its affiliates) may not exercise any portion of an Offering Warrant to the extent that the holder would beneficially own more than 4.99% (or, at the election of the holder, 9.99%) of the Company’s outstanding common stock immediately after exercise.

The Company had assessed the Offering Warrants for appropriate equity or liability classification and determined the Offering Warrants are freestanding instruments that do not meet the definition of a liability pursuant to ASC 480 and do not meet the definition of a derivative pursuant to ASC 815. The Offering Warrants are indexed to the Company’s common stock and meet all other conditions for equity classification under ASC 480 and ASC 815. Accordingly, the Offering Warrants are classified as equity and accounted for as a component of additional paid-in capital at the time of issuance. The Offering Warrants were initially recognized at their relative fair value in the amount of $8.0 million at the time of issuance determined using Black-Scholes option-pricing model and will not be remeasured.

The Offering Warrants to purchase 890,138 shares of common stock were exercised in April 2025 as part of April 2025 Transactions. As of September 30, 2025, Offering Warrants to purchase 3,383,367 shares of common stock remained outstanding.

Prepaid Purchase Agreement

On July 29, 2025, the Company entered into a PPA with Yorkville, pursuant to which the Company may request pre-paid advances of up to $6,000 from Yorkville over a 12-month period, subject to certain limitations and conditions set forth in the PPA. Each Pre-Paid Advance is subject to the consent of Yorkville. Interest shall accrue on the outstanding balance of any Pre-Paid Advance at an annual rate of 8%, subject to an increase to 18% upon events of default described in the PPA. All Pre-Paid Advances are due and payable on the 12-month anniversary of their issuance. At any time that there is an outstanding balance under any Pre-Paid Advances, Yorkville may provide written notice, or Purchase Notice, requiring the Company to issue and sell shares of its common stock to Yorkville, which shall be offset against and reduce the amounts outstanding under the Pre-Paid Advance. The initial advance under the PPA of $1,000 was purchased on July 29, 2025, with net proceeds of $950 after a 5% original issue discount, or OID. On September 8, 2025, the Company entered into a second PPA with Yorkville for an additional $1,000 advance, with net proceeds of $950 after the 5% OID. On October 23, 2025, the Company entered into a third PPA with Yorkville for an additional $1,000 advance, with net proceeds of $950 after the 5% OID.

The Company elected the fair value option under ASC 825, Financial Instruments, or ASC 825, to measure the PPAs at fair value, with changes in fair value recognized in earnings. The initial fair value was determined to be equal to the net proceeds received ($950 per PPA), as this amount represented the cash consideration exchanged, consistent with ASC 825. OID costs of $100 related to the first and second PPA were expensed as incurred in the third quarter of 2025, as required under the fair value option. Additionally, the Company incurred legal costs of $118 which were expensed in the consolidated statements of operations and other comprehensive loss.

Under the terms of the PPAs, the Company issued shares of common stock to Yorkville in satisfaction of the advances. The number of shares issued was determined based on the applicable purchase price per share equal to the lower of (a) 115% of the daily volume weighted average price, or the VWAP, of the Company’s common stock on the last full trading day immediately prior to the date of such Pre‑Paid Advance and (b) 95% of the lowest daily VWAP of the Company’s common stock during the seven consecutive trading days immediately preceding the date on which Yorkville provides the Purchase Notice to the Company, but in no event less than the floor price set forth in the PPA. The carrying value of the PPA and accrued interest were reduced by the issuance of the shares.

Under the terms of the PPAs, through September 24, 2025, the Company issued an aggregate of 1,880,872 shares of common stock to Yorkville (953,765 shares under the first PPA through September 9, 2025, and 927,107 shares under the second PPA), based on the principal of $2,000 from the PPA and $11 of interest expense. The shares were recorded at par value of $0.001 per share with the remainder credited to additional paid-in capital, or APIC.

The initial and second PPAs were fully settled as of September 30, 2025, with no remaining outstanding balance. Accordingly, the fair value of the liabilities at September 30, 2025, was $0, and no adjustment for changes in fair value was required during the quarter.

Standby Equity Purchase Agreement

On July 29, 2025 (the “Effective Date”), the Company entered into a SEPA with Yorkville. Under the SEPA, the Company has the right to sell to Yorkville up to $15.0 million of its common stock (the “Commitment Amount”), par value $0.001 per share, subject to certain limitations and conditions set forth in the SEPA, from time to time, over a 36-month period. Sales of common stock to Yorkville under the SEPA, and the timing of any such sales, are at the Company’s sole discretion, and the Company is under no obligation to sell any shares of common stock to Yorkville under the SEPA.

17


 

Upon satisfaction of the conditions precedent in the SEPA, including having a resale registration statement for shares of common stock issued to Yorkville declared effective by the SEC, the Company may direct Yorkville to purchase a specified number of shares (a “SEPA Advance”) by delivering a written notice (a “SEPA Advance Notice”). A SEPA Advance may not exceed 100% of the average daily trading volume of the common stock on the Nasdaq Capital Market during the five consecutive trading days immediately preceding the SEPA Advance Notice.

Yorkville will purchase shares pursuant to a SEPA Advance at a price equal to 96% of the lowest daily VWAP of the Company’s common stock on the Nasdaq Capital Market during the three consecutive trading days commencing on the date of delivery of the SEPA Advance Notice, unless the daily VWAP is less than a minimum acceptable price specified by the Company in the SEPA Advance Notice or no VWAP is available on the subject trading day.

The SEPA will automatically terminate on the earliest to occur of (i) the first day of the month following the 36-month anniversary of the Effective Date or (ii) the date on which Yorkville shall have made payment for shares of common stock equal to the Commitment Amount. The Company may terminate the SEPA at no cost or penalty upon five trading days’ prior written notice to Yorkville, provided there are no outstanding SEPA Advance Notices for which shares of common stock need to be issued and all amounts owed to Yorkville under the SEPA have been paid in full. The Company and Yorkville may also agree to terminate the SEPA by mutual written consent.

As consideration for Yorkville’s commitment to purchase shares of common stock pursuant to the SEPA, the Company (i) issued 213,099 shares of common stock (the “Commitment Shares”), valued at $300, and (ii) paid Yorkville a $25 cash due diligence and documentation fee. The Company expensed those fees in the consolidated statements of operations and other comprehensive loss. The Company also expensed $118 of legal costs related to the SEPA in the consolidated statements of operations and other comprehensive loss.

In connection with the SEPA, the Company entered into a registration rights agreement with Yorkville, pursuant to which the Company agreed to file with the SEC a registration statement for the resale by Yorkville of the shares of common stock issued under the SEPA, including the Commitment Shares. The Company is required to use commercially reasonable efforts to have such registration statement declared effective by the SEC and to maintain its effectiveness during the 36-month commitment period. The registration statement was filed with the SEC on September 3, 2025 and declared effective by the SEC on September 5, 2025.

The total aggregate number of shares issuable under the SEPA and the PPA is limited to 19.9% of the outstanding shares of the Company’s common stock as of the Effective Date (the “Exchange Cap”), unless certain conditions are met. Additionally, the issuance of shares is subject to a limitation whereby Yorkville and its affiliates may not beneficially own more than 4.99% of the Company’s then-outstanding common stock at any time.

The Company did not issue any SEPA Advances during the nine months ended September 30, 2025.

At the 2023 Annual Meeting, the Company’s stockholders also approved the issuance, in accordance with Nasdaq Listing Rule 5635(a), of shares of common stock, upon conversion of the Company’s outstanding Series X Preferred Stock. On March 5, 2024, based upon then existing beneficial ownership limitations, 11,957 shares of Series X Preferred Stock were automatically converted into 11,957,000 shares of common stock.

As of September 30, 2025, there were:

12,469,000 shares of common stock reserved for issuance upon conversion of the Series X Preferred Stock;
3,143,997 shares of common stock issuable upon the exercise of options under existing equity incentive plans;
1,000,000 shares of common stock issuable for vested but unsettled restricted stock units (Note 10);
1,302,066 and 7,500 shares of common stock reserved for issuance under the 2021 Plan (as defined below) and 2017 ESPP (as defined below), respectively, as well as any automatic increases in the number of shares of the common stock reserved under these plans; and
6,616,499 shares of common stock reserved for issuance upon exercise of outstanding warrants. The warrants consist of (i) warrants to purchase 726,437 shares of the Company’s common stock, with an exercise price of $5.66, which expire on May 20, 2029, which were assumed in connection with the Lung Acquisition, (ii) warrants to purchase 255,000 shares of the Company’s common stock, with an exercise price of $4.89 per share, which were issued and sold in the PIPE Financing as described above and expire on May 2, 2027, (iii) warrants to purchase 3,383,367 shares of the Company’s common stock, with an exercise price of $4.68 per share, which were issued and sold in the Offering as described above and expire on May 3, 2027, (iv) the Exchange Pre-Funded Warrants to purchase 1,939,000 shares of the Company's common stock, with an exercise price of $0.001 per share, which were issued and sold in the Warrant Exchanges as described above can be exercised at any time after their original issuance until such Exchange Pre-Funded Warrants are exercised in full, and (v) the Bios Pre-Funded Warrants to purchase 312,695 shares of the Company's common stock, with an exercise price of $0.001 per

18


 

share, which were issued and sold in April 2025 as described above and can be exercised at any time after their original issuance until such Bios Pre-Funded Warrants are exercised in full.

Accordingly, as of September 30, 2025, out of the 100,000,000 shares of common stock presently authorized, 49,679,154 shares are issued and outstanding or reserved for issuance and 50,320,846 shares of common stock remain available for future issuance.

10. Stock-Based Awards

As of September 30, 2025, the Company had five equity compensation plans, each of which was approved by its stockholders: 2006 Equity Incentive Plan, as amended, or the 2006 Plan, 2016 Stock Incentive Plan, or the 2016 Plan, 2017 Stock Incentive Plan, or the 2017 Plan, 2021 Stock Incentive Plan, or the 2021 Plan, and 2017 Employee Stock Purchase Plan, or the 2017 ESPP. The Company also assumed Lung’s 2013 Long-Term Incentive Plan, or the 2013 Plan, as a result of the Lung Acquisition.

As of September 30, 2025, the Company had no shares issuable upon exercise of outstanding options under the 2006 Plan; 8,404 shares to be issued upon exercise of outstanding options under the 2016 Plan, 98,528 shares to be issued upon exercise of outstanding options under the 2017 Plan and 1,520,179 shares to be issued upon exercise of outstanding options under the 2021 Plan. No shares remained available for future awards under the 2006 Plan, the 2016 Plan, and the 2017 Plan as of September 30, 2025.

Under the 2021 Plan, shares that are expired, terminated, surrendered or canceled without having been fully exercised will be available for future awards. In addition, shares of common stock that are tendered to the Company by a participant to exercise an award are added to the number of shares of common stock available for the grant of awards.

The exercise price for stock options granted may not be less than the fair market value of the common stock as of the date of grant.

2021 Stock Incentive Plan

The Company’s 2021 Plan was approved by the Company’s stockholders on June 15, 2021 and became effective on June 16, 2021. At the 2023 Annual Meeting, the stockholders of the Company approved an amendment, or the Plan Amendment, to the 2021 Plan to increase the number of shares of common stock issuable under the 2021 Plan by 3,000,000 shares to 3,840,254. Other than increasing the number of shares issuable under the 2021 Plan, the Plan Amendment does not make any changes to the 2021 Plan.

Under the 2021 Plan, the Company may grant incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock awards, awards of restricted stock units and other stock-based awards. The Company’s employees, officers, directors, consultants and advisors are eligible to receive awards under the 2021 Plan; however, incentive stock options may only be granted to employees. The 2021 Plan is administered by the Board or, at the discretion of the Board, by a committee of the Board. The number of shares of common stock covered by options and the date those options become exercisable, type of options to be granted, exercise prices, vesting and other restrictions are determined at the discretion of the Board, or its committee if so delegated.

Stock options granted under the 2021 Plan with service-based vesting conditions generally vest over four years and may not have a duration in excess of ten years, although options have been granted with vesting terms of less than four years.

The total number of shares of common stock that may be issued under the 2021 Plan was 3,840,254 as of September 30, 2025, of which 1,302,066 shares remained available for grant. The Company initially reserved 625,000 shares of common stock, plus the number of shares of common stock subject to outstanding awards under the 2017 Plan, the 2016 Plan and the 2006 Plan that expire, terminate or are otherwise surrendered, canceled, forfeited or repurchased by the Company at their original issuance price pursuant to a contractual repurchase right up to 314,006 shares. As of September 30, 2025, the Company had 1,520,179 shares to be issued upon exercise of outstanding options under the 2021 Plan.

2013 Stock Incentive Plan

The Company assumed the 2013 Plan as a result of the Lung Acquisition. In October 2013, Lung’s Board of Directors, or the Lung Board, approved the 2013 Plan to provide long-term incentives for its employees, non-employee directors and certain consultants. As of September 30, 2025, 1,516,886 shares were reserved to be issued upon exercise of options outstanding under the 2013 Plan. These options were assumed by the Company in connection with the Lung Acquisition.

Before the Lung Acquisition, the 2013 Plan was administered by the Lung Board or, at the discretion of the Lung Board, by a committee of the Lung Board. The exercise prices, vesting and other restrictions were determined at the discretion of the Lung Board, or its committee if so delegated, except that the exercise price per share of stock options may not be less than 100% of the fair market value of the share of common stock on the date of grant and the term of stock option may not be greater than ten years. The contractual term for stock option awards is ten years. The vesting periods for equity awards were determined by the Lung Board, but generally were four years. The contractual term for stock option awards is ten years. Following the closing of the Lung Acquisition on October 31, 2023, no further awards can be granted under the 2013 Plan.

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Stock Option Valuation

The assumptions that the Company used to determine the grant-date fair value of the stock options granted to employees and directors during the nine months ended September 30, 2025 and 2024 were as follows, presented on a weighted average basis:

 

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

Risk-free interest rate

 

 

4.0

%

 

 

3.7

%

Expected term (in years)

 

 

5.5

 

 

 

5.6

 

Expected volatility

 

 

107.1

%

 

 

113.6

%

Expected dividend rate

 

 

0

%

 

 

0

%

Stock Options

The following table summarizes the Company’s stock option activity since January 1, 2025:

 

 

 

Number of
Shares

 

 

Weighted
Average
Exercise
Price Per Share

 

 

Weighted
Average
Remaining
Contractual
Term

 

 

Aggregate
Intrinsic
Value

 

Outstanding at January 1, 2025

 

 

3,169,468

 

 

$

5.41

 

 

 

7.0

 

 

$

1,605

 

Granted

 

 

87,500

 

 

 

1.55

 

 

 

 

 

 

 

Exercised

 

 

(21,533

)

 

 

1.05

 

 

 

 

 

 

18

 

Forfeited/Canceled

 

 

(59,310

)

 

 

2.73

 

 

 

 

 

 

 

Expired

 

 

(32,128

)

 

 

22.50

 

 

 

 

 

 

 

Outstanding at September 30, 2025

 

 

3,143,997

 

 

$

5.21

 

 

 

6.4

 

 

$

153

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Options exercisable at September 30, 2025

 

 

2,048,161

 

 

$

6.56

 

 

 

5.0

 

 

$

134

 

Options vested and expected to vest at September 30, 2025

 

 

3,114,532

 

 

$

5.23

 

 

 

6.4

 

 

$

152

 

Options exercisable at December 31, 2024

 

 

2,059,025

 

 

$

6.79

 

 

 

5.6

 

 

$

1,524

 

Options vested and expected to vest at December 31, 2024

 

 

3,120,812

 

 

$

5.45

 

 

 

7.0

 

 

$

1,600

 

The weighted average grant-date fair value of stock options granted during the nine months ended September 30, 2025 was $1.26. The weighted average grant-date fair value of stock options granted during the nine months ended September 30, 2024 was $2.46. The aggregate fair value of stock options that vested during the nine months ended September 30, 2025 and 2024, was $129 and $1,453, respectively.

The aggregate intrinsic value of stock options is calculated as the difference between the exercise price of the stock options and the fair value of the Company’s common stock for those stock options that had exercise prices lower than the fair value of the Company’s common stock. The aggregate intrinsic value of stock options exercised during the nine months ended September 30, 2025 and 2024 was $18 and $354, respectively.

Restricted Stock Units

The Company has granted restricted stock units with service-based vesting conditions. Unvested shares of restricted common stock may not be sold or transferred by the holder.

A summary of the restricted stock unit activity during the nine months ended September 30, 2025 is as follows:

 

 

Restricted Stock Units

 

 

Weighted-Average Grant-Date Fair Value, $

 

Unvested - January 1, 2025

 

 

 

 

$

 

Granted

 

 

1,000,000

 

 

 

1.19

 

Vested

 

 

(1,000,000

)

 

 

1.19

 

Unvested - September 30, 2025

 

 

 

 

$

 

 

 

 

 

 

 

 

As of September 30, 2025, there were 1,000,000 vested restricted stock units that were not issued. The fair value of these vested restricted stock units was $1,194 at the grant date and respective compensation expense was recognized in the three and nine months ended September 30, 2025.

20


 

Stock-Based Compensation

The Company recorded stock-based compensation expense related to stock options in the following expense categories of its statements of operations and comprehensive loss:

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Research and development expenses

$

31

 

 

$

38

 

 

$

150

 

 

$

114

 

General and administrative expenses

 

1,416

 

 

 

470

 

 

 

1,817

 

 

 

870

 

Total stock-based compensation expense

$

1,447

 

 

$

508

 

 

$

1,967

 

 

$

984

 

As of September 30, 2025, the Company had an aggregate of $1,732 of unrecognized stock-based compensation expense, which it expects to recognize over a weighted average period of 2.85 years.

11. Net Loss per Share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows:

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Numerator:

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

$

(5,581

)

 

$

(5,847

)

 

$

(17,904

)

 

$

(21,902

)

Denominator:

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average common shares outstanding—basic and diluted

 

 

26,361,386

 

 

 

21,663,089

 

 

 

24,171,173

 

 

 

16,687,473

 

Net loss per share attributable to common stockholders—basic and diluted

 

$

(0.21

)

 

$

(0.27

)

 

$

(0.74

)

 

$

(1.31

)

As part of the April 2025 Transactions, the Pre-Funded Warrants to purchase an aggregate of 2,251,695 shares of common stock at an exercise price of $0.001 per share are included within the denominator for basic net loss per share purposes and considered outstanding as of the date of issuance.

The 1,000,000 restricted stock units vested but not issued as of September 30, 2025 are included in earnings per share calculation as all conditions for issuance have been satisfied making the underlying shares contingently issuable and economically equivalent to outstanding shares.

The Company’s potential dilutive securities, which include stock options as of September 30, 2025 and 2024, have been excluded from the computation of diluted net loss per share attributable to common stockholders whenever the effect of including them would be to reduce the net loss per share. In periods where there is a net loss, the weighted average number of shares of common stock outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The following potential shares of common stock, presented based on amounts outstanding at each period end, were excluded from the calculation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

Options to purchase common stock

 

 

3,143,997

 

 

 

2,195,039

 

Warrants to issue shares of common stock

 

 

6,616,499

 

 

 

7,353,442

 

Series X Preferred Stock issued and outstanding, as converted

 

 

12,232,000

 

 

 

12,232,000

 

Total

 

 

21,992,496

 

 

 

21,780,481

 

 

12. Commitments and Contingencies

Legal Proceedings

The Company may from time to time be party to litigation arising in the ordinary course of business. As of September 30, 2025, the Company was not party to any legal proceedings and no material legal proceedings are currently pending or, to the Company’s knowledge, threatened.

Intellectual Property Licenses

Harvard and Dana-Farber Agreement

In August 2006, the Company entered into an exclusive license agreement with President and Fellows of Harvard College, or Harvard, and Dana-Farber Cancer Institute, or DFCI. The agreement granted the Company an exclusive worldwide license, with the

21


 

right to sublicense, under specified patents and patent applications to develop, obtain regulatory approval for and commercialize specified product candidates based on cell-permeating peptides. Under the agreement, the Company is obligated to use commercially reasonable efforts to develop and commercialize one or more licensed products and to achieve specified milestone events by specified dates. In connection with entering into the agreement, the Company paid an upfront license fee and issued to Harvard and DFCI shares of its common stock.

In February 2010, the agreement was amended and restated, or the Harvard/DFCI agreement, under which additional patent rights were added to the scope of the license agreement and the annual license maintenance fees were increased. Under the Harvard/DFCI agreement, the Company is obligated to make aggregate milestones payments of up to $7,700 per licensed therapeutic product upon the Company’s achievement of specified clinical, regulatory and sales milestones with respect to such product and up to $700 per licensed diagnostic product upon the Company’s achievement of specified regulatory and sales milestones with respect to such product. In addition, the Company is obligated to pay royalties of low single-digit percentages on annual net sales of licensed products sold by the Company, its affiliates or its sublicensees. The royalties are payable on a product-by-product and country-by-country basis and may be reduced in specified circumstances. In addition, the agreement obligates the Company to pay a percentage, up to the mid-twenties, of fees received by the Company in connection with its sublicense of the licensed products. In accordance with the terms of the agreement, the Company’s sublicense payment obligations may be subject to specified reductions.

The Harvard/DFCI agreement requires the Company to pay annual license maintenance fees of $110 each year, which was reduced to $35 starting in 2023. Any payments made in connection with the annual license maintenance fees will be credited against any royalties due.

As of September 30, 2025, the Company had not developed a commercial product using the licensed technologies and no royalties under the agreement had been paid or were due.

Under the Harvard/DFCI agreement, the Company is responsible for all patent expenses related to the prosecution and maintenance of the licensed patents and applications in-licensed under the agreement as well as cost reimbursement of amounts incurred for all documented patent-related expenses. The agreement will expire on a product-by-product and country-by-country basis upon the last to expire of any valid patent claim pertaining to licensed products covered under the agreement. The Company incurred $27 license maintenance fees in the nine months ended September 30, 2025, which was partially reimbursed by Advancium and the remaining is reimbursable by Rients. The Company incurred $27 license maintenance fees in the nine months ended September 30, 2024.

Agreement with the University of Texas Health Science Center at Tyler

In June 2013, the Company entered into a patent and technology license agreement with UT System, on behalf of UTHSCT. The patent and technology license agreement with UT System, or the UTHSCT Agreement, provides the Company access to patents and technology related to the development of LTI-01 and LTI-03. As part of the UTHSCT Agreement, the Company has (i) a royalty-bearing, exclusive license under the patent rights to manufacture, distribute, and sell certain intellectual property; (ii) a non-exclusive license under the technology rights to manufacture, distribute and sell the licensed product; and (iii) a sublicensing right that allows the Company to grant sublicenses to affiliates and third parties to use the licensed product in the field of use and approved territories outlined in the UTHSCT Agreement. In December 2013, the UTHSCT Agreement was amended and restated to include certain patents in all fields worldwide. In May 2017, the UTHSCT Agreement was amended and restated to modify the specific milestone criteria.

In consideration of the UTHSCT Agreement, the Company agreed to pay past and ongoing patent expenses, and the Company owes UTHSCT sublicensing fees, assignment fees, and single digit royalties on worldwide net product sales, with fixed minimum royalty payments that started in 2015.

Pursuant to the UTHSCT Agreement, the Company is required to use diligent efforts to commercialize the licensed technology as soon as commercially practicable, including maintaining active research and development, regulatory, marketing and sales program, all as commercially reasonable.

The Company may terminate the UTHSCT Agreement for convenience with 90 days’ notice. UTHSCT may also terminate the UTHSCT Agreement, but only if the Company breaches the terms of the agreement. The Company did not incur any expense under the UTHSCT Agreement in the nine months ended September 30, 2025 and 2024.

Agreement with the University of Texas at Austin

In May 2015, the Company entered into a patent license agreement with UT Austin on behalf of UT System. This license agreement with UT Austin, or the UT Austin 6607 Agreement, relates to the patent rights to polypeptide therapeutics and uses thereof. Pursuant to the UT Austin 6607 Agreement the Company has (i) a royalty-bearing, exclusive license under the patent rights to manufacture, distribute, and sell the licensed product; and (ii) a sublicensing right that allows the Company to grant sublicenses to affiliates and third parties to use the licensed product in the field of use and approved territories outlined in the agreement. The UT Austin 6607 Agreement was amended and restated in January 2017, November 2018, and June 2019. The amendments related to extension of milestone payment dates and specific terminology around the milestone achievement criteria.

22


 

In consideration of the UT Austin 6607 Agreement, the Company agreed to pay past and ongoing patent expenses, milestone fees upon certain development and regulatory milestone events, annual license fees, tiered sublicense fees, assignment fees, low single digit royalties on net sales and a Food and Drug Administration, or FDA, Priority Review Voucher fee if the Company sells or transfers this voucher.

Pursuant to the UT Austin 6607 Agreement, the Company is required to use diligent efforts to commercialize the licensed products, including maintaining active research and development, regulatory, marketing and sales program. Moreover, the Company is required to meet certain development and regulatory milestones by specific dates.

The Company may terminate the UT Austin 6607 Agreement for convenience with 90 days’ notice. UT Austin may also terminate the UT Austin 6607 Agreement, but only if the Company breaches the terms of the agreement. The Company did not incur any expense under the UT Austin 6607 Agreement in the nine months ended September 30, 2025 and 2024.

Agreement with Medical University of South Carolina

In March 2016, the Company entered into a license agreement with Medical University of South Carolina Foundation for Research Development, or MUSC. Pursuant to this license agreement with MUSC, or the MUSC Agreement, the Company has patent rights related to protecting against lung fibrosis by up regulating Cav1. The MUSC Agreement granted (i) a royalty-bearing, exclusive license under the patent rights to make, use and sell the license product; and (ii) a sublicensing right that allows the Company to grant sublicenses to affiliates and third parties to use the licensed product in the field of use and approved territories outlined in the agreement. In September 2018, the agreement was amended and restated to include definitions of related methods, related products and related rights.

In consideration of the MUSC Agreement, the Company agreed to pay a non-refundable license fee, patent expenses, milestone fees upon certain development, regulatory and commercial milestone events, sublicense fees, assignment fees and low single digit royalties on net sales, with a fixed minimum royalty payment starting in 2019 and a transaction fee upon the Company’s liquidation.

Pursuant to the MUSC Agreement, the Company is required to use diligent efforts to develop, manufacture and sell the licensed products.

The Company may terminate the MUSC Agreement for convenience by providing a written notice to MUSC effective 90 days following the receipt of notice, and either party may terminate the agreement for a breach of contract. The Company incurred $25 license fees in the nine months ended September 30, 2025 and 2024, respectively.

Agreement with Vivarta Therapeutics LLC

In March 2018, the Company entered into a license agreement with Vivarta Therapeutics, LLC, or Vivarta. This license agreement with Vivarta, or the Vivarta Agreement, relates to intellectual property relating to epithelial sodium channel inhibitors and methods to treat pulmonary disease. Pursuant to the Vivarta Agreement the Company has (i) a royalty-bearing, exclusive license under the intellectual property rights to make, use and sell the licensed product, and (ii) a sublicensing right that allows the Company to grant sublicenses to affiliates and third parties to use the licensed product in the field of use and approved territories outlined in the agreement.

In consideration for the Vivarta Agreement, the Company agreed to grant Vivarta a warrant to purchase an aggregate of 75,000 shares of common stock of Lung for $0.12 per share, to pay a license fee of $10,000 upon the Vivarta Agreement effective date and $40,000 within 30 days of the receipt of a positive freedom to operate analysis from legal counsel. The Company also agreed to pay patent expenses, milestone fees upon certain development and regulatory milestone events, sublicense fees, assignment fees and low single digit royalties on net sales.

Pursuant to the Vivarta Agreement, the Company is required to use diligent efforts to develop, manufacture and sell the licensed products.

The Company may terminate the Vivarta Agreement for convenience by providing a written notice to Vivarta effective 90 days following the receipt of notice, and either party may terminate the agreement for a breach of contract. The Company did not incur any expenses under the Vivarta Agreement in the nine months ended September 30, 2025 and 2024.

Master Services Agreement

In April 2025, the Company entered into a master services agreement with a third party Contract Research Organization, or CRO, under which the CRO has agreed to perform certain services in accordance with written work orders. The work orders set forth the obligations of the parties with regard to conducting the clinical research study entitled “A Randomized, Double-Blind, Placebo-Controlled, Phase 2, Safety, Tolerability and Efficacy Study of Caveolin1-Scaffolding-Protein-Derived Peptide (LTI-03) in Patients with IPF”, under the Company’s Protocol LTI-03-2001. Pursuant to the agreement, the Company had contracted for up to $17.0 million of master services.

In August 2025, this master services agreement was terminated with no future commitment for the Company.

Exclusive Option Agreement with Advancium

23


 

On October 31, 2024, the Company entered into an exclusive option agreement, or the Option Agreement, with Advancium Health Network, or Advancium, for the sale of ALRN-6924, a clinical stage oncology agent that the Company was developing prior to the Lung Acquisition (as defined below). During the option period, Advancium intends to evaluate ALRN-6924 as a potential therapy for retinoblastoma. Under the terms of the option agreement Advancium paid the Company a non-refundable fee of $0.1 million for the exclusive option to acquire ALRN-6924 and related assets. If Advancium exercises its option, the Company will receive an exercise payment with potential for additional development, regulatory and commercial milestone payments and sales royalties.

In July 2025, the Option Agreement was terminated.

Letter Agreement with Rients

In August 2025, the Company entered into a letter agreement with Rients LLC, or Rients, for Rients to evaluate the legacy ALRN-6924 compound, or the Compound Asset. During the term of the letter agreement, Rients shall pay the Company for all fees and expenses incurred by the Company to maintain the Compound Asset.

Indemnification Agreements

In the ordinary course of business, the Company may provide indemnification of varying scope and terms to vendors, lessors, business partners and other parties with respect to certain matters including, but not limited to, losses arising out of breach of such agreements or from intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with members of its board of directors and officers that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is, in many cases, unlimited. To date, the Company has not incurred any material costs as a result of such indemnifications. The Company does not believe that the outcome of any claims under indemnification arrangements will have a material effect on its financial position, results of operations or cash flows, and it had not accrued any liabilities related to such obligations in its consolidated financial statements as of September 30, 2025 or December 31, 2024.

13. Segment Reporting

The Company has one reportable segment which focuses on developing novel therapies for the treatment of orphan pulmonary and fibrosis indications with no approved or limited effective treatments. The Company’s CODM, the CEO, manages the Company’s operations on a consolidated basis as one operating segment for the purposes of evaluating financial performance and allocating resources.

The Company has not generated any revenue yet. The CODM assesses the financial performance of the segment and decides how to allocate resources based on net loss on a consolidated basis. The measure of segment assets is reported on the consolidated balance sheets as total consolidated assets.

The CODM uses net loss predominantly in the annual operating budget and in the strategic planning and forecasting process. Such loss measure is used to monitor budget versus actual results on an ongoing basis by the CODM and determine how resources are allocated to the various activities of the Company. The CODM also uses net loss to evaluate the Company’s performance and assist in determination of management’s incentive compensation.

All of the Company’s tangible assets are held in the United States. The Company views its operations and manages its business in one operating segment operating exclusively in the United States.

24


 

The table below is a summary of the segment loss, including significant segment expenses:

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Revenues

 

$

 

 

$

 

 

$

 

 

$

 

Research and development expenses:

 

 

 

 

 

 

 

 

 

 

 

 

LTI-01 program-related expenses:

 

 

 

 

 

 

 

 

 

 

 

 

Preclinical study costs

 

 

 

 

 

 

 

 

 

 

 

2

 

CMC activities

 

 

162

 

 

 

81

 

 

 

947

 

 

 

3,394

 

Clinical operation activities

 

 

29

 

 

 

3

 

 

 

310

 

 

 

46

 

Total LTI-01 program-related expenses

 

 

191

 

 

 

84

 

 

 

1,257

 

 

 

3,442

 

LTI-03 program-related expenses:

 

 

 

 

 

 

 

 

 

 

 

 

Preclinical study costs

 

 

294

 

 

 

862

 

 

 

1,116

 

 

 

1,459

 

CMC activities

 

 

272

 

 

 

949

 

 

 

1,668

 

 

 

1,345

 

Clinical operation activities

 

 

414

 

 

 

1,225

 

 

 

3,249

 

 

 

2,948

 

Total LTI-03 program-related expenses

 

 

980

 

 

 

3,036

 

 

 

6,033

 

 

 

5,752

 

Other program-related expenses

 

 

2

 

 

 

34

 

 

 

11

 

 

 

56

 

Employee related expenses

 

 

478

 

 

 

517

 

 

 

1,622

 

 

 

1,593

 

Professional fees for services

 

 

6

 

 

 

31

 

 

 

44

 

 

 

49

 

Facilities and other expenses

 

 

24

 

 

 

20

 

 

 

61

 

 

 

34

 

Total research and development expenses

 

 

1,681

 

 

 

3,722

 

 

 

9,028

 

 

 

10,926

 

General and administrative expenses:

 

 

 

 

 

 

 

 

 

 

 

 

Employee related expenses

 

 

927

 

 

 

1,133

 

 

 

2,809

 

 

 

4,870

 

Professional fees for services

 

 

2,420

 

 

 

829

 

 

 

4,593

 

 

 

4,827

 

Facilities and other expenses

 

 

464

 

 

 

387

 

 

 

1,542

 

 

 

1,692

 

Total general and administrative expenses

 

 

3,811

 

 

 

2,349

 

 

 

8,944

 

 

 

11,389

 

Other income, net

 

 

(89

)

 

 

224

 

 

 

68

 

 

 

413

 

Segment and consolidated net loss

 

$

(5,581

)

 

$

(5,847

)

 

$

(17,904

)

 

$

(21,902

)

 

14. Subsequent Event

The Company evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the financial statements were issued. Based upon this review, other than as described below, the Company did not identify any subsequent events that would have required adjustment or disclosure in the financial statements.

Pre-Paid Advance Agreement with Yorkville

On October 23, 2025, Yorkville purchased a third Pre-Paid Advance, or the Third Advance, of $1,000, for which the Company received net proceeds of $950. The third PPA was converted to 846,290 shares of the Company’s common stock in October 2025, with no remaining outstanding balance.

Issuance of Common Stock

On October 30, 2025, the Company issued 300,000 shares of common stock for the restricted stock units granted and vested in August 2025.

 

25


 

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis are meant to provide material information relevant to an assessment of the financial condition and results of operations of our Company, including an evaluation of the amounts and certainty of cash flows from operations and from outside sources, so as to allow investors to better view our Company from management’s perspective. You should read the following discussion and analysis of our financial condition and results of operations together with our unaudited condensed consolidated financial statements for the nine months ended September 30, 2025, included elsewhere in this Quarterly Report on Form 10-Q. In addition to historical information, this discussion and analysis contains forward-looking statements that involve risks, uncertainties and assumptions. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of certain factors. We discuss factors that we believe could cause or contribute to these differences below and elsewhere in this report, including those set forth under Item 1A. "Risk Factors" in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 (the “Annual Report”).

Overview and Recent Developments

We are a clinical stage biopharmaceutical company focused on developing novel therapies for the treatment of orphan pulmonary and fibrosis indications with no approved or limited effective treatments. We currently have two product candidates in clinical development, LTI-03 and LTI-01, and multiple candidates in preclinical development focused on fibrosis indications. Our pipeline includes:

LTI-03, a peptide, for which we conducted a Phase 1b dose-ranging, placebo-controlled safety, tolerability, and pharmacodynamic biomarker activity trial in development for the treatment of Idiopathic Pulmonary Fibrosis, or IPF, that has demonstrated the ability to protect healthy lung epithelial cells and reduce pro-fibrotic signaling;
LTI-01, a proenzyme that completed a Phase 2a dose-ranging, placebo-controlled trial and a Phase 1b safety, tolerability and proof of mechanism trial in loculated pleural effusion, or LPE, patients, an indication that has no approved drug treatment; and
preclinical programs targeting cystic fibrosis and a peptide program focused on the Cav1 protein for systemic fibrosis indications.

In June 2024, we decided to temporarily delay clinical development of LTI-01 in an effort to focus our resources on clinical development of LTI-03 and until additional funds are raised. In the fourth quarter of 2024, we determined that the temporary delay of further clinical development of LTI-01 may not be a short-term measure.

In May 2025, we initiated screening and recruitment of patients in the RENEW Phase 2 clinical trial of LTI-03. The RENEW trial is a Phase 2 multi-center, randomized, double-blind, placebo-controlled study evaluating the safety, tolerability, and efficacy of LTI-03 patients with IPF. In addition, the trial is designed to assess the activity of inhaled dry powder LTI-03 across multiple biomarkers and to measure lung function and the potential for healthy tissue regeneration. The trial is designed to enroll approximately 120 patients diagnosed with IPF within 5 years of screening, who may be receiving standard of care antifibrotic therapy, across up to 50 sites globally, including sites in the United States, United Kingdom, Germany, Austria and Poland. Patients will be randomized into two blinded placebo-controlled cohorts that will run concurrently. Patients in the low dose cohort will receive 2.5 mg of either LTI-03 or placebo administered twice daily, or BID, for a total dose of 5 mg/day, while participants in the high dose cohort will receive 5 mg BID for a total dose of 10 mg/day. The primary endpoint is the incidence of treatment-emergent adverse events from Day 1 through Week 24. The key secondary endpoint is the efficacy of LTI-03 measured through forced vital capacity, percent predicted FVC and high-resolution computer tomography, in collaboration with Qureight Ltd. Patients will undergo a 28-day screening period prior to being randomized and entering the 24-week treatment period, with a four-week follow-up.

On June 10, 2025, the U.S. Food and Drug Administration, or the FDA, advised us that it had put the Phase 2 RENEW trial of LTI-03 on clinical hold and we paused enrollment and patient dosing at our clinical trial sites in the United States. On July 8, 2025, we received a formal Clinical Hold Letter from the FDA, or the Letter. In the Letter, the FDA noted that no No-Observed-Adverse-Effect Level (NOAEL) had been identified and minimal mucus cell hyperplasia in the bronchioles had been observed in the 26-week rat study conducted in support of the RENEW trial. The FDA stated that without a NOAEL, there is inadequate nonclinical support for the Phase 2 RENEW trial. The FDA requested that we conduct a rat inhalation toxicity study using doses low enough to identify a NOAEL with a dosing duration sufficient to support the Phase 2 RENEW trial.

We are seeking to activate sites, enroll patients and initiate the RENEW trial in the United Kingdom and Europe and other jurisdictions. In October 2025, we received authorization from the European Medicines Agency, or the EMA, to initiate our Phase 2 RENEW trial, at sites in Germany and Poland, of our lead candidate, LTI-03, for the treatment of IPF. We had previously received regulatory clearance from the U.K.’s Medicines and Healthcare products Regulatory Agency, or the MHRA.

 

26


 

On October 29, 2025 we were notified by the FDA that it had lifted the full clinical hold on our Phase 2 RENEW trial evaluating in patients with IPF. The FDA’s decision follows a review of our submission, which addressed all of the agency’s concerns. In its correspondence, the FDA confirmed that Study LTI-03-2001 may proceed and that any prior Full Clinical Hold concerns have been fully resolved. We expect to resume patient recruitment in late 2025 or early 2026 across approximately 20 U.S. clinical sites located in Alabama, California, Colorado, Connecticut, Florida, Indiana, Kansas, Massachusetts, Michigan, Missouri, North Carolina, New York, Ohio, South Carolina, and Texas. The U.S. enrollment complements our broader global RENEW study, which includes approximately 30 additional sites in the United Kingdom, Germany, Poland, and Australia. The trial is designed to evaluate the safety, tolerability, and efficacy of LTI-03 in up to 120 patients with IPF. Key secondary endpoints include changes in lung function (FVC) and imaging-based measures of fibrosis progression. Initial topline data is expected in the third quarter of 2026.

We have not completed the development of any of our product candidates, have not generated any revenue from product sales and have never generated an operating profit.

To date, we have financed operations primarily through $145.5 million in net proceeds from sales of common stock and warrants, $0.7 million in net proceeds from sales of common stock under our “at-the-market” offering program, $131.2 million from sales of preferred stock prior to our initial public offering, or IPO, $34.9 million from a collaboration agreement in 2010, $17.5 million in net proceeds in connection with a private placement following the Lung Acquisition (as defined below) in 2023, $17.7 million in net proceeds in connection with the issuance and sale of shares and the accompanying warrants in our public offering in May 2024, $5.3 million in gross proceeds in connection with the April 2025 Transactions (as defined below) in April 2025, and $1.9 million in net proceeds from the sale of the two pre-paid advances under the PPA (as defined below).

Since our inception, we have incurred significant losses on an aggregate basis. Our net losses were $5.6 million and $5.8 million for the three months ended September 30, 2025 and 2024, respectively, and $17.9 million and $21.9 million for the nine months ended September 30, 2025 and 2024, respectively. As of September 30, 2025, we had an accumulated deficit of $369.3 million. These losses have resulted primarily from costs incurred in connection with research and development activities, licensing and patent investment and general and administrative costs associated with our operations. We expect to continue to incur operating losses for the foreseeable future.

As of September 30, 2025, we had cash and cash equivalents of $4.0 million. Based on our current operating plan, we believe that our existing cash and cash equivalents, together with the proceeds received by us pursuant to the PPA in July 2025 described below, will enable us to fund our planned operating expense and capital expenditure requirements into December 2025. The funds are not sufficient to enable us to complete the Phase 2 RENEW clinical trial of LTI-03 or maintain our current level of operations past December 2025 and we will need to obtain additional funding prior to completing the trial. Our future viability is dependent on our ability to raise additional capital to finance our operations. Our estimate as to how long we expect our existing cash and cash equivalents to be able to continue to fund our operations is based on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. In addition, our existing cash and cash equivalents will not be sufficient to fund all of the efforts that we plan to undertake or to fund the completion of development of our product candidates. Accordingly, we will be required to obtain further funding through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources. There is no assurance that we will be successful in obtaining sufficient funding on terms acceptable to us to fund continuing operations, or at all. If we are unable to obtain sufficient funding on terms acceptable to us, on a timely basis or at all, we may be forced to delay, reduce or eliminate some or all of our research and development programs, product portfolio expansion or future commercialization efforts, which could adversely affect our business prospects, or we may be unable to continue operations.

Pre-Paid Advance Agreement and Standby Equity Purchase Agreement with Yorkville

On July 29, 2025, we entered into a Pre-Paid Advance Agreement, or the PPA, and a Standby Equity Purchase Agreement, or the SEPA, with YA II PN, Ltd., a Cayman Islands exempt limited partnership, or Yorkville. The PPA and the SEPA are collectively referred to as the Yorkville Transactions.

Under the PPA, we may request up to $6.0 million in pre-paid advances from Yorkville over a 12-month period, subject to certain limitations and conditions set forth in the PPA. Each pre-paid advance will be purchased by Yorkville at 95% of the face amount of the pre-paid advance. An initial pre-paid advance of $1.0 million was purchased on July 29, 2025 by Yorkville, for net proceeds of $0.95 million. Each additional pre-paid advance shall be subject to the consent of Yorkville. Interest shall accrue on the outstanding balance of any pre-paid advance at an annual rate of 8%, subject to an increase to 18% upon events of default described in the PPA. At any time that there is an outstanding balance under any pre-paid advances, Yorkville may provide a written notice to require us to issue and sell shares of common stock to offset against and reduce the balance under the pre-paid advances at a price per share equal to the lower of (i) 115% of the daily volume weighted average price, or the VWAP, of our common stock on the Nasdaq Capital Market on the last full trading day immediately prior to the date of such pre-paid advance and (ii) 95% of the lowest daily VWAP on the Nasdaq Capital Market during the seven consecutive trading days immediately preceding the date on which Yorkville provides such a purchase notice, subject to a floor price of $0.28 per share. Cash amortization payments will be triggered if the daily VWAP falls below the floor price for five of seven consecutive trading days, or in the event of any shares issued pursuant to the PPA are not eligible to be sold pursuant to an effective registration statement for a period of 10 consecutive trading days, or if we have issued substantially all of the shares available

27


 

under certain exchange cap limitations.

On September 8, 2025, Yorkville purchased a second Pre-Paid Advance, or the Second Advance, of $1.0 million, for which we received net proceeds of $0.95 million. On October 23, 2025, Yorkville purchased a third Pre-Paid Advance, or the Third Advance, of $1.0 million, for which we received net proceeds of $0.95 million. As of the date of this report, we have issued 953,765 shares of our common stock, at a weighted average price per share of approximately $1.056, to Yorkville, which were offset against $1.0 million of the outstanding principal and accrued interest under the initial Pre-Paid Advance, and issued 927,107 shares of our common stock, at a weighted average price per share of approximately $1.082, to Yorkville, which were offset against $1.0 million of the outstanding principal and accrued interest under the Second Pre-Paid Advance, and issued 846,290 shares of our common stock, at a weighted average price per share of approximately $1.183, to Yorkville, which were offset against $1.0 million of the outstanding principal and accrued interest under the Third Pre-Paid Advance. The initial and second Pre-Paid Advances were fully settled as of September 30, 2025, with no remaining outstanding balance. Accordingly, the fair value of the liabilities at September 30, 2025, was $0, and no adjustment for changes in fair value was required during the quarter.

Separately, under the SEPA, we may sell up to $15.0 million of our common stock to Yorkville over a 36-month period at our discretion. Sales under the SEPA are based on our advance notices and may be for a number of shares up to 100% of the average daily trading volume of our common stock during the five trading days immediately prior to the date of each such notice, priced at 96% of the lowest daily VWAP of our common stock on the Nasdaq Capital Market during the three consecutive trading days commencing on the date of delivery each notice, subject to a minimum price floor set by us. As consideration for Yorkville’s commitment to purchase our common stock under the SEPA, we agreed to pay to Yorkville a commitment fee of $0.3 million, which was satisfied by the issuance to Yorkville of an aggregate of 213,099 shares of our common stock. As of the date of this report, we have not issued shares of our common stock to Yorkville under the SEPA.

The issuance of shares under both the PPA and SEPA is subject to a cap equal to 19.9% of our outstanding common stock as of July 29, 2025, unless stockholder approval is obtained or other specified conditions are met.

Advisory Agreements

We have entered into various arrangements with certain business advisors, consultants, and investment institutions to assist us with fundraising and to provide certain advisory services. In connection with these arrangements, we may be required to pay such business advisors, consultants, and investment institutions certain contingent fees related to their services to the extent that certain conditions are met, such as a the successful fundraising. There are no contingent fees payable under these arrangements as of September 30, 2025.

Sales Agreement with H.C. Wainwright

On May 15, 2025, we entered into an “at the market offering” agreement, or the Wainwright Sales Agreement, with H.C. Wainwright & Co., LLC, or H.C. Wainwright, as agent and/or principal, pursuant to which we may offer and sell shares of our common stock having an aggregate offering price of up to $13.7 million from time to time through or to H.C. Wainwright by any method permitted that is deemed to be an “at the market” offering as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended. As of September 30, 2025, we had issued and sold 16,127 shares of common stock pursuant to the Wainwright Sales Agreement. In July 2025, in connection with the Yorkville Transactions, we reduced the aggregate offering price of the shares of common stock that could be offered and sold under the Wainwright Sales Agreement to $8.1 million.

Prior to entering into the Wainwright Sales Agreement, in May 2025, we terminated the equity distribution agreement, dated July 26, 2024, or the Equity Distribution Agreement, with Citizens JMP Securities, LLC, or Citizens JMP, as agent and/or principal, under which we could offer and sell up to $50.0 million of shares of our common stock from time to time through or to Citizens JMP by any method that was deemed to be an “at the market” offering as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended. In January 2025, we issued and sold 317,772 shares of common stock pursuant to the Equity Distribution Agreement for total net proceeds of $0.7 million. We did not issue or sell any other shares of common stock pursuant to the Equity Distribution Agreement in 2025.

April 2025 Warrant Transactions and Private Placement

On April 21, 2025, we entered into privately negotiated letter agreements with certain holders of the PIPE Warrants (as defined below) and certain holders of the Offering Warrants (as defined below). Pursuant to these letter agreements, these holders agreed to exercise for cash the PIPE Warrants for the purchase of an aggregate of 159,500 shares of common stock and the Offering Warrants for the purchase of an aggregate of 890,138 shares of common stock at a reduced exercise price of $1.60 per share, or the Warrant Exercises. The total gross proceeds for the Warrant Exercises were $1.7 million.

On April 21, 2025, we also entered into privately negotiated letter agreements with additional holders of the PIPE Warrants who, in exchange for pre-funded warrants, or the Exchange Pre-Funded Warrants, to purchase an aggregate of 1,939,000 shares of common stock at an exercise price of $0.001 per share, surrendered PIPE Warrants to purchase an aggregate of 1,939,000 shares of common

28


 

stock to us for cancellation and made an aggregate cash payment of $1.599 per share into which the Exchange Pre-Funded Warrants are exercisable, or the Warrant Exchanges. In the Warrant Exchanges, entities affiliated with Bios Equity Partners, LP, or Bios Partners, exchanged PIPE Warrants to purchase an aggregate of 1,300,500 shares common stock plus the required cash for Exchange Pre-Funded Warrants. The total gross proceeds for the Warrant Exchanges were $3.1 million.

In addition, on April 21, 2025, an entity affiliated with Bios Partners, or the Bios Purchaser, purchased additional pre-funded warrants to purchase 312,695 shares of the common stock in a private placement, or the Placement Pre-Funded Warrants, pursuant to a subscription agreement at a price of $1.599 per share underlying the Placement Pre-Funded Warrants, or the Private Placement. The Private Placement closed on April 24, 2025. The total gross proceeds for the Private Placement were $0.5 million. We refer to the Warrant Exercises, the Warrant Exchanges and the Private Placement as the April 2025 Transactions.

Master Services Agreement

In April 2025, we entered into a master services agreement with a third party Contract Research Organization, or CRO, under which the CRO has agreed to perform certain services in accordance with written work orders. The work orders set forth the obligations of the parties with regard to conducting the clinical research study entitled “A Randomized, Double-Blind, Placebo-Controlled, Phase 2, Safety, Tolerability and Efficacy Study of Caveolin1-Scaffolding-Protein-Derived Peptide (LTI-03) in Patients with IPF”, under our Protocol LTI-03-2001. Pursuant to the agreement, we had contracted for up to $17.0 million of master services.

In August 2025, this master services agreement was terminated with no future commitment for the Company.

Exclusive Option Agreement with Advancium

On October 31, 2024, we entered into an exclusive option agreement, or the Option Agreement, with Advancium Health Network, or Advancium, for the sale of ALRN-6924, a clinical stage oncology agent that we were developing prior to the Lung Acquisition (as defined below). During the option period, Advancium intends to evaluate ALRN-6924 as a potential therapy for retinoblastoma. Under the terms of the option agreement Advancium paid us a non-refundable fee of $0.1 million for the exclusive option to acquire ALRN-6924 and related assets. If Advancium exercised its option, we would receive an exercise payment with potential for additional development, regulatory and commercial milestone payments and sales royalties.

In July 2025, the Option Agreement was terminated.

Letter Agreement with Rients

In August 2025, the Company entered into a letter agreement with Rients LLC, or Rients, for Rients to evaluate the legacy ALRN-6924 compound, or the Compound Asset. During the term of the letter agreement, Rients shall pay the Company for all fees and expenses incurred by the Company to maintain the Compound Asset.

Follow-on Public Offering

In May 2024, we completed an underwritten follow-on public offering, or the Offering, pursuant to which we issued and sold 4,273,505 shares of our common stock, or the Offering Shares, and accompanying warrants, or the Offering Warrants, to purchase 4,273,505 shares of common stock, or the Offering Warrant Shares. We sold all of the Offering Shares and Offering Warrants. Each Offering Share was offered and sold together with an accompanying Offering Warrant at a combined public offering price of $4.68, and the underwriter purchased each Offering Share with an accompanying Offering Warrant at a combined price, after underwriting discounts, of $4.35. Net proceeds from the Offering were $17.7 million, after deducting underwriting discounts and commissions and offering expenses, and excluding any proceeds that may be received from exercise of the Offering Warrants. As of September 30, 2025, Offering Warrants to purchase 3,383,367 shares of common stock remained outstanding.

Components of Our Results of Operations

Revenue

We have not generated any revenue from product sales and we do not expect to generate any revenue from the sale of products in the foreseeable future.

Operating Expenses

Our expenses since inception have consisted solely of research and development costs, general and administrative, and restructuring costs.

Research and Development Expenses

29


 

For the periods presented in this Quarterly Report on Form 10-Q, research and development expenses consist primarily of costs incurred for our research activities, including our discovery efforts, and the development of our product candidates, and include:

salaries, benefits and other related costs, including stock-based compensation expense, for personnel engaged in research and development functions;
expenses incurred in connection with the clinical development of our product candidates, including under agreements with third parties, such as consultants and CROs;
the cost of manufacturing product candidates for use in our clinical trials and preclinical studies, including under agreements with third parties, such as consultants and contract manufacturing organizations, or CMOs;
expenses incurred in connection with the preclinical development of our product candidates, including outsourced professional scientific development services, consulting research fees and payments made under sponsored research arrangements with third parties;
the costs of laboratory supplies and acquiring, developing and manufacturing preclinical study and clinical trial materials;
third-party license fees;
costs related to compliance with regulatory requirements; and
facility-related expenses, which included direct depreciation costs and allocated expenses for rent and maintenance of facilities and other operating costs.

We expense research and development costs as incurred. We recognize costs for certain development activities, such as clinical trials, based on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations or information provided to us by our vendors and our clinical investigative sites. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and are reflected in our financial statements as prepaid or accrued research and development expenses.

In addition, we typically use our employee and infrastructure resources across our development programs. We track outsourced development costs and milestone payments made under our licensing arrangements by product candidate or development program, but we do not allocate personnel costs, license payments made under our licensing arrangements or other internal costs to specific development programs or product candidates because these costs are deployed across multiple programs and, as such, are not separately classified.

Research and development activities are central to our business model. The duration, costs and timing of clinical trials and development of a product candidate will depend on a variety of factors, including:

the scope, rate of progress, expense and results of clinical trials of the product candidates that we are developing and other research and development activities that we have conducted;
uncertainties in clinical trial design and patient enrollment rates;
significant and changing government regulation and regulatory guidance;
the timing and receipt of any marketing approvals; and
the expense of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights.

A change in the outcome of any of these variables with respect to the development of a product candidate could mean a significant change in the costs and timing associated with the development of that product candidate. For example, if the U.S. Food and Drug Administration, or the FDA, or another regulatory authority were to require us to conduct clinical trials beyond those that we anticipated would be required for the completion of clinical development of a product candidate, or if we experience significant trial delays due to patient enrollment or other reasons, we could be required to expend significant additional financial resources and time on the completion of clinical development.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in our executive, finance and corporate and administrative functions. General and administrative expenses are comprised of professional fees associated with being a public company including costs of accounting, auditing, legal, regulatory, tax and consulting services associated with maintaining compliance with exchange listing and the SEC requirements, director and officer insurance costs; and both public and investor relations costs. General and administrative expenses also include legal fees relating to patent and corporate matters; legal and other professional fees relating to our strategic process; other insurance costs; travel expenses; and facility-related expenses, which include direct depreciation costs and allocated expenses for rent and maintenance of facilities and other operating costs.

30


 

Other Income, net

Interest and Other Income

Interest income consists of interest income earned on our cash and cash equivalents. Historically, our interest income had not been significant due to low investment balances and low interest earned on those balances. We anticipate that our interest income will fluctuate in the future in response to our cash and cash equivalents and the interest rate environment.

Other income, net consists of the income recognized under the Option Agreement with Advancium, gains or losses recognized from non-routine items such as accretion on short-term investments, and gains or losses recognized from foreign currency transactions, original issue discount, or OID, related to the PPA, and the disposal of fixed assets.

We anticipate that our interest income and investment accretion will fluctuate in the future in response to our then-current cash and cash equivalents, and then-current interest rates.

Results of Operations

Comparison of the Three Months Ended September 30, 2025 and 2024

The following table summarizes our results of operations for the three months ended September 30, 2025 and 2024:

 

 

 

Three Months Ended September 30,

 

 

Increase

 

 

 

2025

 

 

2024

 

 

(Decrease)

 

 

 

(in thousands)

 

Revenue

 

$

 

 

$

 

 

$

 

Operating expenses:

 

 

 

 

 

 

 

 

 

Research and development

 

 

1,681

 

 

 

3,722

 

 

 

(2,041

)

General and administrative

 

 

3,811

 

 

 

2,349

 

 

 

1,462

 

Total operating expenses

 

 

5,492

 

 

 

6,071

 

 

 

(579

)

Loss from operations

 

 

(5,492

)

 

 

(6,071

)

 

 

579

 

Other income, net

 

 

(89

)

 

 

224

 

 

 

(313

)

Net loss

 

$

(5,581

)

 

$

(5,847

)

 

$

266

 

Research and Development Expenses

Research and development expenses for the three months ended September 30, 2025 were $1.7 million, compared to $3.7 million for the three months ended September 30, 2024. The decrease of $2.0 million was primarily a result of the clinical hold imposed on LTI-03. During the three months ended September 30, 2025, we spent $0.6 million on clinical trials, $0.3 million on manufacturing, $0.5 million on employee and related expenses, and $0.3 million on regulatory and development consulting. During the three months ended September 30, 2024, we spent $2.1 million on clinical trials, $1.0 million on manufacturing including $0.8 million write-offs due to the expiration of clinical materials, and $0.1 million on regulatory and development consulting as well as $0.5 million on employee and related expenses associated with clinical programs acquired in the Lung Acquisition.

General and Administrative Expenses

General and administrative expenses were $3.8 million for the three months ended September 30, 2025, compared to $2.3 million for the three months ended September 30, 2024. The increase of $1.5 million in the three months ended September 30, 2025 as compared to the three months ended September 30, 2024 was primarily due to increased professional fees of $1.6 million as a result of vesting of restricted stock units granted in exchange for consulting services and the commitment fee related to the Yorkville Transactions, increased facilities and other expenses of $0.1 million, offset by decreased employee and related expenses of $0.2 million as a result of employee turnovers in 2024.

Other Income, net

Other income, net was an expense of less than $0.1 million for the three months ended September 30, 2025, which primarily consisted of OID related to the PPA, offset by interest income and accretion in our then-current cash and cash equivalents. Other income, net for the three months ended September 30, 2024 was $0.2 million and it was primarily driven by fluctuations in foreign currency exchange rates and interest of our money market funds and treasury bills.

Comparison of the nine months ended September 30, 2025 and 2024

 

31


 

 

 

Nine Months Ended September 30,

 

 

Increase

 

 

 

2025

 

 

2024

 

 

(Decrease)

 

 

 

(in thousands)

 

Operating expenses:

 

 

 

 

 

 

 

 

 

Research and development

 

 

9,028

 

 

 

10,926

 

 

 

(1,898

)

General and administrative

 

 

8,944

 

 

 

11,389

 

 

 

(2,445

)

Total operating expenses

 

 

17,972

 

 

 

22,315

 

 

 

(4,343

)

Loss from operations

 

 

(17,972

)

 

 

(22,315

)

 

 

4,343

 

Other income, net

 

 

68

 

 

 

413

 

 

 

(345

)

Net loss

 

$

(17,904

)

 

$

(21,902

)

 

$

3,998

 

Research and Development Expenses

Research and development expenses for the nine months ended September 30, 2025 were $9.0 million, compared to $10.9 million for the nine months ended September 30, 2024. The decrease of $1.9 million was primarily a result of the clinical hold imposed on LTI-03. During the nine months ended September 30, 2025, we spent $4.3 million on clinical trials, $2.2 million on manufacturing, $1.6 million on employee and related expenses, $0.1 million on professional fees and facilities and other expenses, and $0.8 million on regulatory and development consulting. During the nine months ended September 30, 2024, we spent $4.2 million on clinical trials, $4.6 million on manufacturing including $3.2 million write-offs due to the expiration of clinical materials, and $0.5 million on regulatory and development consulting as well as $1.6 million on employee and related expenses associated with clinical programs acquired in the Lung Acquisition.

General and Administrative Expenses

General and administrative expenses were $8.9 million for the nine months ended September 30, 2025, compared to $11.4 million for the nine months ended September 30, 2024. The decrease of $2.5 million in the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024 was primarily due to decreased professional fees of $0.2 million as a result of decrease in legal expense, offset by vesting of restricted stock units granted in exchange for consulting services and the commitment fee related to the Yorkville Transactions recognized during the three months ended September 30, 2025, and decreased employee and related expenses of $2.1 million as a result of employee turnover in 2024 as well as decreased facilities and other expenses of $0.2 million.

Other Income, net

Other income, net of less than $0.1 million for the nine months ended September 30, 2025 primarily consisted of interest income and accretion in our then-current cash and cash equivalents, offset by OID related to the PPA. Other income, net for the nine months ended September 30, 2024 was $0.4 million and it was primarily driven by fluctuations in foreign currency exchange rates and interest of our money market funds and treasury bills.

Liquidity and Capital Resources

Since inception, we have not generated any revenue from product sales and have incurred significant operating losses and negative cash flows from operations. If we obtain funding for our continued operations, we expect to continue to incur significant expenses and operating losses for the foreseeable future as we advance the clinical development of our lead product candidates, LTI-03 and LTI-01, or any future product candidates. We expect that our research and development and general and administrative costs would continue to increase significantly, including in connection with conducting clinical trials and manufacturing for our lead product candidates or any future product candidates to support potential future commercialization and providing general and administrative support for our operations, including the costs associated with operating as a public company.

As of September 30, 2025, we had cash and cash equivalents of $4.0 million. Based on our current operating plan, we believe that our existing cash and cash equivalents as of September 30, 2025, together with the proceeds received by us pursuant to the PPA in October 2025, will be sufficient to enable us to fund our operating expenses and capital expenditure requirements into December 2025. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect. As a result, we will need additional capital to fund our operations, which we may obtain from additional equity or debt financings, strategic collaborations, licensing arrangements or other sources. If we are unable to obtain sufficient funding on terms acceptable to us, on a timely basis or at all, we may be forced to delay, reduce or eliminate some or all of our research and development programs, product portfolio expansion or future commercialization efforts, which could adversely affect our business prospects, or we may be unable to continue operations. See the section titled “Risk Factors” found in our Annual Report on Form 10-K for additional risks associated with our substantial capital requirements.

We believe that our working capital as of September 30, 2025, together with the proceeds received by us pursuant to the PPA in October 2025, lack of revenue and recurring net losses raise substantial doubt about our ability to continue as a going concern.

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Cash Flows

The following table summarizes our sources and uses of cash for each of the periods presented:

 

 

 

Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

 

 

(in thousands)

 

Cash used in operating activities

 

$

(16,141

)

 

$

(17,479

)

Cash provided by financing activities

 

 

7,350

 

 

 

17,817

 

Effect of exchange rate changes on cash and cash equivalents

 

 

(26

)

 

 

1

 

Net (decrease) increase in cash, cash equivalents and restricted cash

 

$

(8,817

)

 

$

339

 

Operating Activities.

During the nine months ended September 30, 2025, net cash used in operating activities was $16.1 million primarily due to our net loss of $17.9 million and cash used in the change in operating assets and liabilities of $0.6 million, offset by non-cash charges of $2.4 million. Non-cash charges resulted primarily from stock-based compensation expense of $2.0 million, commitment fee related to the PPA of $0.3 million and OID related to the PPA of $0.1 million. Changes in our operating assets and liabilities during the nine months ended September 30, 2025 consisted primarily of a decrease of $3.5 million in other long-term liabilities and accrued expenses and other current liabilities, and an increase of $0.3 million in prepaid expenses and other current assets, offset by an increase of $3.2 million in accounts payable. During the nine months ended September 30, 2024, net cash used in operating activities was $17.5 million primarily due to our net loss of $21.9 million, offset by cash provided by the change in operating assets and liabilities of $3.4 million and non-cash charges of $1.0 million. Non-cash charges resulted primarily from stock-based compensation expense of $1.0 million. Changes in our operating assets and liabilities during the nine months ended September 30, 2024 consisted primarily of a decrease of $2.2 million in other assets due to the recognition of a prepaid expense, and an increase of $1.4 million in accrued expenses and other current liabilities, offset by an increase of $0.1 million in prepaid expenses and other current assets and a decrease of $0.1 million in accounts payable.

Financing Activities.

During the nine months ended September 30, 2025, net cash provided by financing activities was $7.4 million primarily due to the April 2025 Transactions and Yorkville Transactions described above. During the nine months ended September 30, 2024, net cash provided by financing activities was $17.8 million primarily due to the Offering in May 2024.

Funding Requirements

Subject to obtaining sufficient funding, our plan of operation is to continue implementing our business strategy, continue research and development of LTI-03 and any other product candidates we may acquire or develop and continue to expand our research pipeline and our internal research and development capabilities. We expect our expenses would increase substantially, particularly as we advance the preclinical activities and clinical trials of our current and future product candidates. In addition, we expect that we would incur additional costs associated with operating as a public company. Accordingly, we will need to obtain substantial additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on attractive terms, we would be forced to delay, reduce or terminate our research and development programs or future commercialization efforts. Our future capital requirements will depend on many factors, including:

the scope, timing, progress, costs, and results of discovery, preclinical development, and clinical trials for our current and future product candidates;
the number of clinical trials required for regulatory approval of our current and future product candidates;
the costs, timing, and outcome of regulatory review of any of our current and future product candidates;
the cost of manufacturing clinical and commercial supplies of our current and future product candidates;
the costs and timing of future commercialization activities, including manufacturing, marketing, sales, and distribution, for any of our product candidates for which we receive marketing approval;
the costs and timing of preparing, filing, and prosecuting patent applications, maintaining and enforcing our intellectual property rights, and defending any intellectual property-related claims, including any claims by third parties that we are infringing upon their intellectual property rights;
our ability to maintain existing, and establish new, strategic collaborations, licensing, or other arrangements and the financial terms of any such agreements, including the timing and amount of any future milestone, royalty, or other payments due under any such agreement;
the revenue, if any, received from commercial sales of our product candidates for which we receive marketing approval;

33


 

expenses to attract, hire and retain, skilled personnel;
the costs of operating as a public company;
if our product candidates are approved, our ability to establish a commercially viable pricing structure and obtain approval for coverage and adequate reimbursement from third-party and government payors;
the effect of competing technological and market developments;
the extent to which we acquire or invest in businesses, products, and technologies; and
unfavorable global economic conditions, which may exacerbate the magnitude of the factors discussed above.

A change in the outcome of any of these variables with respect to the development of a product candidate could mean a significant change in the costs and timing associated with the development of the product candidates.

Until such time as we can generate significant revenue from product sales, if ever, we expect to seek to finance our operations from the sale of equity or debt financings, strategic collaborations, licensing, arrangements or other sources. In the event that additional financing is required, we may not be able to raise it on terms acceptable to us, or at all. If we raise additional funds through the issuance of equity or convertible preferred stock, it may result in dilution to our existing stockholders. Debt financing or preferred equity financing, if available, may result in increased fixed payment obligations, and the existence of securities with rights that may be senior to those of our common stock. If we incur indebtedness, we could become subject to covenants that would restrict our operations.

If we raise funds through strategic collaborations, licensing or other arrangements, we may relinquish significant rights or grant licenses on terms that are not favorable to us. Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the United States and worldwide. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market products or product candidates that we would otherwise prefer to develop and market ourselves.

Contractual and other obligations

We enter into contracts in the normal course of business with CROs for clinical and preclinical research studies, external manufacturers for product for use in our clinical trials, and other research supplies and other services as part of our operations. These contracts generally provide for termination on notice, and therefore are cancelable contracts.

In April 2025, we entered into a master services agreement with a third party CRO, under which the CRO has agreed to perform certain services in accordance with written work orders. The work orders set forth the obligations of the parties with regard to conducting the clinical research study entitled “A Randomized, Double-Blind, Placebo-Controlled, Phase 2, Safety, Tolerability and Efficacy Study of Caveolin1-Scaffolding-Protein-Derived Peptide (LTI-03) in Patients with IPF”, under our Protocol LTI-03-2001. Pursuant to the agreement, we had contracted for up to $17.0 million of master services. This master services agreement was terminated in August 2025 with no future commitment for the Company.

Critical Accounting Estimates

Our management’s discussion and analysis of financial condition and results of operations is based on our unaudited condensed consolidated financial statements to this Quarterly Report on Form 10-Q, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of our consolidated financial statements and related disclosures requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, costs, and expenses and the disclosure of contingent assets and liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends and events and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates under different assumptions or conditions.

During the three and nine months ended September 30, 2025, there were no material changes to the items that we disclosed as our critical accounting estimates in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K.

Recent Accounting Pronouncements

We have reviewed all recently issued standards and have determined that, other than as disclosed in Note 2 to our condensed consolidated financial statements to this Quarterly Report on Form 10-Q, such standards will not have a material impact on our condensed consolidated financial statements or do not otherwise apply to our operations.

34


 

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are a smaller reporting company, as defined in Rule 12b-2 under the Securities and Exchange Act of 1934, as amended, or the Exchange Act, for this reporting period and are not required to provide the information required under this item.

Item 4. Controls and Procedures.

Limitations on Effectiveness of Controls and Procedures

The term “disclosure controls and procedures”, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, refers to controls and procedures that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

In designing and evaluating our disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and our interim Chief Financial Officer, evaluated, as of the end of the period covered by this Quarterly Report on Form 10-Q, the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act). Based on that evaluation, our Chief Executive Officer and our interim Chief Financial Officer concluded that our disclosure controls and procedures were not effective at the reasonable assurance level as of September 30, 2025, because of the identified material weaknesses in our internal control over financial reporting described below.

Material Weaknesses

We identified material weaknesses in our internal control over financial reporting. A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting such that there is a possibility that a material misstatement of our financial statements will not be prevented or detected on a timely basis. Management identified material weaknesses related to the (i) lack of sufficient accounting and supervisory personnel to maintain appropriate segregation of duties relating to user access of the financial accounting system and who have the appropriate level of technical accounting experience and training, (ii) lack of evidence over reviews of account reconciliations and supporting schedules, and (iii) lack of adequate procedures and controls to ensure that accurate financial statements could have been prepared and reviewed on a timely basis for annual reporting purposes. In the year ended December 31, 2023, management identified material weaknesses related to the accounting for the Lung Acquisition, including a lack of sufficient precision in the performance of reviews supporting the purchase price allocation accounting, and a lack of timely oversight over third-party specialists and the reports they produced to support the accounting for the Lung Acquisition. These material weaknesses continued to exist as of September 30, 2025.

Management’s Plan to Remediate Material Weaknesses

We have implemented and are continuing to implement procedures to remediate these material weaknesses, including the hiring of a Controller with the requisite supervisory background and knowledge in financial reporting, integration into one accounting system, engaging third party accounting specialists and building a more streamlined process in order to prepare and review financial information, however, our control environment needs improvement, and as a result we may be exposed to errors. Our remediation plan also includes the hiring of additional accounting employees and/or consultants with the specific technical accounting experience necessary to assist with complex, non-routine transactions and to support the timely completion of financial close procedures, the implementation of robust processes, and to assist with the preparation of financial statements and our compliance with SEC reporting obligations. Management has engaged a third-party to assist in evaluating and documenting the design and operating effectiveness of our internal control over financial reporting, and their work is ongoing. With the help of third-party consultants, we have nearly completed the integration of the acquired systems from the Lung Acquisition into our financial and accounting systems. Additionally, we intend to develop and implement consistent accounting policies and internal control procedures and provide additional training to our accounting and financial reporting personnel.

The below are actions that we have taken to date to remediate the above-mentioned material weaknesses:

Enhanced the execution of our risk assessment activities by evaluating whether the design of our internal controls appropriately addresses changes in the business (including changes to people, processes and systems) that could impact our system of internal controls.

35


 

Substantially completed the integration of the acquired systems from the Lung Acquisition into our financial and accounting systems to allow for systematic segregation of duties, and to enhance the accurate and timely preparation and review of financial statements and supporting schedules.
Engaged a third-party to assist in assessing the design and implementation of controls and develop remediation plans for identified control gaps related to our timely preparation and review of account reconciliations, financial statements and supporting schedules.
Reported regularly to the audit committee on the progress and results of the remediation plan, including the identification, status and resolution of internal control deficiencies.

In addition to implementing and executing the aforementioned activities, the following activities are expected to be completed in fiscal year 2025:

Continue to reassess staffing and add additional resources, as required, with the requisite technical accounting experience and training, to further allow for segregation of duties and to support our system of internal control.
Implement remediation plans for identified control design and implementation gaps.
Define user roles within our ERP system to ensure proper segregation of duties within our accounting systems.
Perform testing of operating effectiveness of identified controls over financial reporting including IT General Controls.
As needed, we will also supplement our internal resources with additional third-party resources to enhance our corporate oversight and monitoring over process-level controls and structures to ensure that there is appropriate assignment of authority, responsibility, and accountability.

The material weaknesses will not be considered remediated until management completes the design and implementation of the measures described above and the controls operate for a sufficient period of time and management has concluded, through testing, that these controls are effective. Management believes that the remediation measures described above will be implemented in a manner such that the controls can be tested, and the identified material weaknesses can be determined to be remediated, however, no assurance can be made that such remediation will occur or that additional material weaknesses will not be identified.

Changes in Internal Control Over Financial Reporting

Except for the above noted and previously reported material weaknesses and the related ongoing remediation activities described above, no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) has occurred during the three months ended September 30, 2025 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

 

36


 

PART II—OTHER INFORMATION

We are not currently a party to any material legal proceedings. From time to time, we may be subject to various legal proceedings and claims that arise in the ordinary course of our business activities. Regardless of the outcome, litigation can have a material adverse impact on us because of defense and settlement, costs, diversion of management resources, and other factors.

Item 1A. Risk Factors.

We require substantial additional capital to finance our operations. If we are unable to raise such capital when needed, or on acceptable terms, we may be forced to delay, reduce and/or eliminate one or more of our clinical and research and development programs, future commercialization efforts or other operations.

As of September 30, 2025, we had cash and cash equivalents of $4.0 million. Based on our current operating plan, we believe that our existing cash and cash equivalents as of September 30, 2025, together with the proceeds received by us pursuant to the PPA in October 2025, will be sufficient to enable us to fund our operating expenses and capital expenditure requirements only into December 2025. As a result, we will need additional capital to fund our operations, which we may obtain from additional equity or debt financings, strategic collaborations, licensing arrangements or other sources. If we are unable to obtain sufficient funding on terms acceptable to us, on a timely basis or at all, we may be forced to delay, reduce or eliminate some or all of our research and development programs, product portfolio expansion or future commercialization efforts, which could adversely affect our business prospects, or we may be unable to continue operations.

We believe that our working capital as of September 30, 2025, together with the proceeds received by us pursuant to the PPA in October 2025, lack of revenue and recurring net losses raise substantial doubt about our ability to continue as a going concern.

For a discussion of our other risk factors, see “Part I, Item 1A-Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024 filed with the SEC on April 7, 2025.

You should carefully consider the risks included in our Annual Report on Form 10-K, together with all of the other information in this Quarterly Report on Form 10-Q, including our unaudited condensed consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q. The occurrence of any single risk or any combination of risks could materially and adversely affect our business, financial condition, results of operations, cash flows and the trading price of our common stock.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

During the three months ended September 30, 2025, we sold 1,880,872 shares of our common stock to Yorkville, in satisfaction of an aggregate of $2.0 million of principal and accrued interest owed by us to Yorkville under our Pre-Paid Advance Agreement dated July 29, 2025. All shares of common stock issued and sold to Yorkville were issued pursuant to Section 4(a)(2) of the Securities Act, as transactions not involving a public offering.

Item 3. Defaults Upon Senior Securities

Not applicable.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

During the nine months ended September 30, 2025, no director or officer of the Company adopted or terminated a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement, as each term is defined in Item 408(a) of Regulation S-K.

37


 

Item 6. Exhibits.

The exhibits listed on the Exhibit Index immediately preceding such exhibits, which is incorporated herein by reference, are filed or furnished as part of this Quarterly Report on Form 10-Q.

 

Exhibit Number

 

Description

 

 

 

3.1

 

Restated Certificate of Incorporation of the Registrant, as amended (incorporated by reference to Exhibit 3.1 of the Company’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 11, 2021).

 

 

 

3.2

 

Certificate of Amendment of Restated Certificate of Incorporation of the Registrant, dated as of November 10, 2022 (incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 10, 2022).

 

 

 

3.3

 

Certificate of Amendment of Restated Certificate of Incorporation of the Registrant, dated February 28, 2024 (incorporated by reference to Exhibit 3.3 of the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on April 15, 2024).

 

 

 

3.4

 

Certificate of Amendment to Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on January 10, 2025).

 

 

 

3.5

 

Amended and Restated Bylaws, as amended.

 

 

 

10.1

 

Pre-Paid Advance Agreement, dated as of July 29, 2025, between the Registrant and YA II PN, Ltd. (Incorporated by reference from Registrant’s Current Report on Form 8-K filed on July 30, 2025)

 

 

 

10.2

 

Standby Equity Purchase Agreement, dated as of July 29, 2025, between the Registrant and YA II PN, Ltd. (Incorporated by reference from Registrant’s Current Report on Form 8-K filed on July 30, 2025)

 

 

 

31.1

 

Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

 

 

31.2

 

Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

 

 

32.1

 

Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

 

 

32.2

 

Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

 

 

101.INS

 

Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.

 

 

101.SCH

 

Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents

 

 

104

 

Cover Page Interactive Data File (embedded within the Inline XBRL document)

 

*

Indicates management contract or compensatory plan.

+

In accordance with Item 601(b)(10)(iv) of Regulation S-K, certain information (indicated by “[**]”) has been excluded from this exhibit because it is both not material and private or confidential. A copy of the omitted portion will be furnished to the SEC upon request.

#

Certain schedules and similar attachments have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The registrant undertakes to furnish supplemental copies of any of the omitted schedules upon request by the SEC.

 

38


 

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

 

 

Rein Therapeutics, Inc.

 

 

 

 

Date: November 14, 2025

 

By:

/s/ Brian Windsor, Ph.D.

Brian Windsor, Ph.D.

President and Chief Executive Officer

(Principal Executive Officer)

 

 

 

 

Date: November 14, 2025

 

By:

/s/ Timothy M. Cunningham

Timothy M. Cunningham

Interim Chief Financial Officer

(Principal Financial Officer)

 

39


FAQ

What did Rein Therapeutics (RNTX) report for Q3 2025 net loss?

Rein reported a Q3 net loss of $5.581M.

How much cash did RNTX have at quarter-end?

Cash and cash equivalents were $4.048M as of September 30, 2025.

What is the status of the LTI-03 Phase 2 RENEW trial?

The FDA lifted the full clinical hold on October 29, 2025; the study targets up to 120 IPF patients with topline data expected in Q3 2026.

Does RNTX face going concern risk?

Yes. Management disclosed substantial doubt and estimates runway into December 2025.

What recent financings did RNTX complete in 2025?

It received three $1.0M Yorkville Pre‑Paid Advances (net $0.95M each), $1.679M from warrant exercises, $3.101M from warrant exchanges, and $0.5M from a private placement.

How many RNTX shares are outstanding?

As of November 10, 2025, there were 26,286,382 common shares outstanding.
Rein Therapeutics, Inc.

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Biotechnology
Pharmaceutical Preparations
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