[SCHEDULE 13G/A] Rein Therapeutics, Inc. SEC Filing

Rhea-AI Filing Summary

Rein Therapeutics, Inc. receives a Schedule 13G/A disclosing that several Voss-related entities and Travis W. Cocke hold meaningful stakes in the company. The filing reports specific beneficial ownership amounts: Voss Value Master Fund holds 699,440 shares (3.0%), Voss Value-Oriented Special Situations Fund holds 316,768 shares (1.3%), Voss Advisors GP is attributable to 1,016,208 shares (4.3%), and Voss Capital and Travis W. Cocke are each reported as beneficial owners of 2,666,532 shares (11.3%). Those percentages are calculated against 23,547,429 shares outstanding as disclosed in the issuer’s registration statement. The cover pages show sole voting and dispositive power for the reported amounts and the filing includes a certification that the shares were not acquired to change or influence control of the issuer.

Positive

• Voss Capital and Travis W. Cocke report a substantial stake (11.3%), a clearly disclosed and quantifiable minority position.
• All reported shares show sole voting and dispositive power, providing transparent control lines for the holdings.
• Ownership percentages are calculated against a clear outstanding share base (23,547,429 shares) disclosed in the issuer's registration statement.

Negative

• Concentration of sole voting/dispositive power in Voss entities and Mr. Cocke could centralize shareholder influence.
• Filing asserts the shares were not acquired to change control, which limits insight into potential future activist intentions.

Insights

Financial Analyst

TL;DR Voss-related entities and their manager report an 11.3% stake, a substantial minority position that could affect shareholder dynamics.

The disclosed 11.3% beneficial ownership by Voss Capital and Travis W. Cocke represents a material minority position relative to the reported 23.5 million shares outstanding. The filing shows sole voting and dispositive power over the reported shares, indicating direct control of voting rights rather than shared arrangements. The Schedule 13G/A classification and the signed certification state the holdings are not intended to change or influence control, which implies a passive reporting posture under the rules. For investors, the key measurable implications are concentration of voting power and clarity on construct of ownership—both are explicitly stated in the filing.

Corporate Governance Expert

TL;DR A single manager and related funds are shown with concentrated, sole voting power over an 11.3% stake, raising governance visibility.

The filing attributes sole voting and dispositive authority to the reporting persons for their respective share blocks, and aggregates positions through the fund/manager structure to show an 11.3% beneficial ownership for Voss Capital and Mr. Cocke. That sole authority simplifies accountability for voting outcomes but concentrates influence in a small group. The statement’s explicit certification that the shares were not acquired to effect change in control clarifies intent, but does not alter the practical governance impact of a sizable, centrally controlled stake.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Rein Therapeutics, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

00887A204

(CUSIP Number)

09/24/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 00887A204

1

Names of Reporting Persons

Voss Value Master Fund, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 699,440.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 699,440.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

699,440.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.0 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 00887A204

1

Names of Reporting Persons

Voss Value-Oriented Special Situations Fund, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 316,768.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 316,768.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

316,768.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

1.3 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 00887A204

1

Names of Reporting Persons

Voss Advisors GP, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,016,208.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,016,208.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,016,208.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.3 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No. 00887A204

1

Names of Reporting Persons

Voss Capital, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,666,532.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,666,532.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,666,532.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.3 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 00887A204

1

Names of Reporting Persons

Cocke Travis W.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,666,532.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,666,532.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,666,532.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.3 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Rein Therapeutics, Inc.
(b)	Address of issuer's principal executive offices: 12407 N. MOPAC EXPY., SUITE 250 #390, AUSTIN, TEXAS 78758
Item 2.
(a)	Name of person filing: The names of the persons filing this statement on Schedule 13G (collectively, the "Reporting Persons") are: Voss Value Master Fund, L.P. ("Voss Value Master Fund"); Voss Value-Oriented Special Situations Fund, L.P. ("Voss Value-Oriented Special Situations Fund"); Voss Advisors GP, LLC ("Voss GP"); Voss Capital, L.P. ("Voss Capital"); and Travis W. Cocke.
(b)	Address or principal business office or, if none, residence: Voss Value Master Fund 3773 Richmond, Suite 850 Houston, Texas 77046 Voss Value-Oriented Special Situations Fund 3773 Richmond, Suite 850 Houston, Texas 77046 Voss GP 3773 Richmond, Suite 850 Houston, Texas 77046 Voss Capital 3773 Richmond, Suite 850 Houston, Texas 77046 Travis W. Cocke 3773 Richmond, Suite 850 Houston, Texas 77046
(c)	Citizenship: Voss Value Master Fund Cayman Islands Voss Value-Oriented Special Situations Fund Texas Voss GP Texas Voss Capital Texas Travis W. Cocke USA
(d)	Title of class of securities: Common Stock, $0.001 par value
(e)	CUSIP No.: 00887A204
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: As of the date hereof: (i) Voss Value Master Fund beneficially owned 699,440 shares of Common Stock, $0.001 par value, of the Issuer (the "Shares"). (ii) Voss Value-Oriented Special Situations Fund beneficially owned 316,768 Shares. (iii) Voss GP, as the general partner of Voss Value Master Fund and Voss Value-Oriented Special Situations Fund, may be deemed the beneficial owner of the (i) 699,440 Shares beneficially owned by Voss Value Master Fund and (ii) 316,768 Shares beneficially owned by Voss Value-Oriented Special Situations Fund. (iv) Voss Capital, as the investment manager of Voss Value Master Fund, Voss Value-Oriented Special Situations Fund and certain accounts managed by Voss Capital (the "Voss Managed Accounts"), may be deemed the beneficial owner of the (i) 699,440 Shares beneficially owned by Voss Value Master Fund, (ii) 316,768 Shares beneficially owned by Voss Value-Oriented Special Situations Fund and (iii) 1,650,324 Shares held in the Voss Managed Accounts. (v) Mr. Cocke, as the managing member of each of Voss Capital and Voss GP, may be deemed the beneficial owner of the (i) 699,440 Shares owned by Voss Value Master Fund, (ii) 316,768 Shares beneficially owned by Voss Value-Oriented Special Situations Fund and (iii) 1,650,324 Shares held in the Voss Managed Accounts.
(b)	Percent of class: The aggregate percentage of the Shares reported owned by each person named herein is based upon 23,547,429 Shares outstanding as of August 25, 2025, which is the total number of Shares outstanding as disclosed in the Registration Statement on Form S-1 filed with the Securities and Exchange Commission on September 3, 2025. As of the date hereof: (i) Voss Value Master Fund may be deemed to beneficially own approximately 3.0% of the outstanding Shares; (ii) Voss Value-Oriented Special Situations Fund may be deemed to beneficially own approximately 1.3% of the outstanding Shares; (iii) Voss GP may be deemed to beneficially own approximately 4.3% of the outstanding Shares; (iv) Voss Capital may be deemed to beneficially own approximately 11.3% of the outstanding Shares (approximately 7.0% of the outstanding Shares are held in the Voss Managed Accounts); and (v) Mr. Cocke may be deemed to beneficially own approximately 11.3% of the outstanding Shares.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See Cover Pages Items 5-9.
	(ii) Shared power to vote or to direct the vote: See Cover Pages Items 5-9.
	(iii) Sole power to dispose or to direct the disposition of: See Cover Pages Items 5-9.
	(iv) Shared power to dispose or to direct the disposition of: See Cover Pages Items 5-9.
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. See Exhibit 99.1 to the Schedule 13G filed with the Securities and Exchange Commission on May 14, 2025.
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Voss Value Master Fund, LP

Signature:	/s/ Travis W. Cocke
Name/Title:	Travis W. Cocke, Managing Member of Voss Advisors GP, LLC, its General Partner
Date:	09/26/2025

Voss Value-Oriented Special Situations Fund, LP

Signature:	/s/ Travis W. Cocke
Name/Title:	Travis W. Cocke, Managing Member of Voss Advisors GP, LLC, its General Partner
Date:	09/26/2025

Voss Advisors GP, LLC

Signature:	/s/ Travis W. Cocke
Name/Title:	Travis W. Cocke, Managing Member
Date:	09/26/2025

Voss Capital, LP

Signature:	/s/ Travis W. Cocke
Name/Title:	Travis W. Cocke, Managing Member
Date:	09/26/2025

Cocke Travis W.

Signature:	/s/ Travis W. Cocke
Name/Title:	Travis W. Cocke
Date:	09/26/2025

FAQ

How many shares of RNTX does Voss Capital report beneficially owning?

Voss Capital is reported as beneficially owning 2,666,532 shares, representing approximately 11.3% of the outstanding shares.

What percentage of Rein Therapeutics does Travis W. Cocke beneficially own?

Travis W. Cocke is reported as beneficially owning 2,666,532 shares, or about 11.3% of the class.

What is the total number of shares outstanding used to calculate percentages?

Percentages are based on 23,547,429 shares outstanding as disclosed in the issuer's registration statement.

Do the reporting persons claim they intend to influence control of Rein Therapeutics?

No. The filing contains a certification stating the securities were not acquired and are not held to change or influence control of the issuer.

Which Voss-related fund holds 699,440 shares of RNTX?

Voss Value Master Fund is reported as beneficially owning 699,440 shares, approximately 3.0% of the outstanding shares.

Are any reported holdings subject to shared voting or dispositive power?

No. The cover pages show zero shared voting power and zero shared dispositive power for the reported positions.