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Adaptin Bio (APTN) wins OTCQB quotation and advances APTN-101 program

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
8-K

Rhea-AI Filing Summary

Adaptin Bio, Inc. reported that its common shares have been approved for quotation on the OTCQB Venture Market under the ticker symbol APTN. The company expects trading to begin in approximately 6–8 weeks and plans to share any material updates as they occur.

Adaptin is a biotechnology company developing precision cancer therapeutics focused on hard-to-reach tissues, including the brain. Its lead candidate, APTN-101, a brain bispecific T cell engager built on the BRiTE delivery platform, is FDA-cleared for a Phase 1 clinical trial in glioblastoma and has shown anti-tumor activity and a favorable safety profile in multiple preclinical models.

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Insights

Adaptin secures OTCQB quotation while advancing a first-in-human oncology program.

Adaptin Bio has received approval for its common shares to be quoted on the OTCQB Venture Market under the symbol APTN. This step can broaden access to U.S. investors and may support liquidity, but actual trading activity will depend on market interest once quotation begins in about 6–8 weeks.

The company highlights APTN-101, a brain bispecific T cell engager using its BRiTE platform, which is FDA-cleared for a Phase 1 trial in glioblastoma. Preclinical data described as showing compelling anti-tumor activity and a favorable safety profile remain early-stage; clinical results will be critical to assessing future value.

Management also notes the need to raise additional capital and points to risks around funding, clinical development, regulatory review, and establishing a market for the stock. Future company filings and trial updates will frame how effectively the OTCQB quotation and pipeline progress translate into business traction.

Item 8.01 Other Events Other
Voluntary disclosure of events the company deems important to shareholders but not covered by other items.
Item 9.01 Financial Statements and Exhibits Exhibits
Financial statements, pro forma financial information, and exhibit attachments filed with this report.
Expected start of OTCQB trading 6–8 weeks Company expectation for trading commencement after approval for quotation
Clinical trial phase Phase 1 APTN-101 FDA-cleared clinical trial in glioblastoma
Investor contact phone 1-800-428-8070 Investor relations contact provided in the disclosure
OTCQB Venture Market financial
"common shares have been approved for quotation on the OTCQB® Venture Market"
The OTCQB Venture Market is a tier of the over‑the‑counter (OTC) trading platform that groups early‑stage, smaller companies that do not meet the stricter requirements of higher OTC tiers. It gives investors a way to buy and sell shares in these higher‑risk, less mature firms with generally lower reporting and transparency standards; think of it as a marketplace’s “starter lane” where potential is available but uncertainty and volatility are higher, so investors should expect greater risk and do extra homework.
brain bispecific T cell engager medical
"Adaptin Bio’s proprietary brain bispecific T cell engager, APTN-101, leverages"
Phase 1 clinical trial medical
"APTN-101, our lead program that is expected to begin a Phase 1 first-in-human clinical trial shortly"
A phase 1 clinical trial is the first stage of testing a new drug or treatment in people, typically involving a small group to assess safety, how the body handles the treatment, and appropriate dosing. For investors, phase 1 results are an early risk check — like a test drive that can reveal fatal flaws or promising signals — and they often cause big changes in a drug’s perceived value and the company’s prospects.
glioblastoma (GBM) medical
"APTN-101 is FDA-cleared for a Phase 1 clinical trial in glioblastoma (GBM)"
forward-looking statements regulatory
"all of the statements, expectations and assumptions contained in this press release are forward-looking statements"
Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

FORM 8-K

 

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

 

Date of Report (Date of earliest event reported): April 6, 2026

 

ADAPTIN BIO, INC.

(Exact Name of Registrant as Specified in Charter)

 

Delaware   000-56583   88-1566415

(State or Other Jurisdiction

of Incorporation)

  (Commission File Number)  

(IRS Employer

Identification No.)

 

3540 Toringdon Way, Suite 200, #250

Charlotte, North Carolina

  28277
(Address of Principal Executive Offices)   (Zip Code)

 

(888)-609-1498

(Registrant’s telephone number, including area code)

 

N/A

(Former Name or Former Address, if Changed Since Last Report)

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

 

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

 

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

 

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

 

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

Securities registered pursuant to Section 12(b) of the Act: None.

 

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

 

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.

 

 

 

 

 

 

ITEM 8.01 OTHER EVENTS.

 

On April 6, 2026, Adaptin Bio, Inc. announced that its common shares have been approved for quotation on the OTCQB® Venture Market under the ticker symbol APTN. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

 

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.

 

(d) Exhibits

 

Exhibit No.   Description
99.1   Press release, dated April 6, 2026.
104   Cover Page Interactive Data File (embedded within the Inline XBRL document).

 

1

 

 

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 hereunto duly authorized.

 

  Adaptin Bio, Inc.
     
Date: April 6, 2026 By:  /s/ Michael J. Roberts
    Michael J. Roberts
    President and Chief Executive Officer

 

2

 

Exhibit 99.1

 

Adaptin Bio Shares to be Quoted on the OTCQB Under Ticker Symbol APTN

 

CHARLOTTE, N.C.— April 6, 2026—Adaptin Bio, Inc. (OTCQB: APTN), (“Adaptin” or the “Company”), a biotechnology company developing precision cancer therapeutics enabled by targeted delivery to the brain and other difficult-to-reach tissues, today announced that its common shares have been approved for quotation on the OTCQB® Venture Market under the ticker symbol APTN. Quotation on the OTCQB is expected to provide greater access to U.S. investors, improve liquidity, and enhance visibility within the investment community. The Company expects trading to begin approximately within the next 6-8 weeks and will provide any material updates as they become available.

 

“We are extremely pleased to have our shares approved for quotation on the OTCQB as part of the execution of our business plan. The pending quotation will provide more investors the ability to participate in Adaptin’s mission to advance our novel CNS-targeted therapies for difficult-to-treat cancers,” said Michael J. Roberts, Ph.D., Chief Executive Officer of Adaptin Bio. Importantly APTN-101, our lead program that is expected to begin a Phase 1 first-in-human clinical trial shortly, leverages our BRiTE antibody delivery platform, and has demonstrated compelling anti-tumor activity and a favorable safety profile in multiple preclinical models. APTN-101 has the potential to meaningfully improve the lives of patients suffering from a variety of devastating diseases, and we are focused on advancing this compound through clinical trials and bringing it to patients as rapidly as possible.”

 

About APTN-101 BRiTE Therapeutic

 

Adaptin Bio’s proprietary brain bispecific T cell engager, APTN-101, leverages the enhanced “hitchhiking” capabilities of manipulated immune cells to deliver therapeutic agents directly to brain tumors. The novel approach has demonstrated high specificity for EGFRvIII-expressing glioma cells, dose-responsive efficacy against diverse patient-derived glioma cell lines, and a favorable safety profile. By manipulating the immune system either in vivo or ex vivo, BRiTE aims to overcome traditional treatment barriers and offer a promising new therapeutic option for patients with intracerebral malignancies.

 

About Adaptin Bio, Inc.

 

Adaptin Bio, Inc. is a biotechnology company developing novel therapies for oncology and central nervous system disorders. Its mission is to improve patient outcomes in difficult-to-treat cancers by improving and enhancing drug delivery to the brain and other tissues. The Company’s proprietary Brain Bispecific T cell Engager (BRiTE) technology was developed by researchers at the Department of Neurosurgery at Duke University. APTN-101 is FDA-cleared for a Phase 1 clinical trial in glioblastoma (GBM), and other indications are being considered for future studies. For more information, visit www.adaptinbio.com.

 

Caution Regarding Forward Looking Statements:

 

Except for historical information, all of the statements, expectations and assumptions contained in this press release are forward-looking statements. These forward-looking statements may include information concerning possible or projected future business operations. Such statements are often characterized by the use of qualified words (and their derivatives) such as “aims,” “anticipate,” “believe,” “continues,” “could,” “design,” “estimate,” “expect,” “goals,” “intend,” “looking,” “may,” “objectives,” “opportunity,” “outlook,” “plan,” “positioned,” “potential,” “project,” “seek,” “should,” “target,” “will,” “would,” or other statements concerning opinions or judgments of the Company and its management about future events. Actual results might differ materially from those explicit or implicit in the forward-looking statements. Important factors that could cause actual results to differ materially include: our ability to raise additional money to fund our operations for at least the next 12 months as a going concern and develop our product candidate as anticipated; our ability to control costs associated with our operations; intellectual property risks; risks of our clinical trials, including, but not limited to, the timing, delays, costs, design, initiation, enrollment, and results of such trials; any delays in regulatory review and approval of product candidates in development; reliance on third parties to supply drug substance and drug product for our clinical trials and preclinical studies, and produce commercial supplies of product candidates; the potential advantages of our product candidate; our competitive position; risks related to our ability to initiate trading and develop a market for common stock; our ability to maintain our culture and recruit, integrate and retain qualified personnel and advisors, including on our Board of Directors; volatility and uncertainty in the global economy and financial markets; changes in legal, regulatory and legislative environments in the markets in which we operate and the impact of these changes on our ability to obtain regulatory approval for our products; and other risks and uncertainties set forth from time to time in our filings with the Securities and Exchange Commission. Adaptin assumes no obligation and does not intend to update these forward-looking statements except as required by law.  

 

Investor Contact:

1-800-428-8070

investor@adaptinbio.com

 

FAQ

What did Adaptin Bio (APTN) announce in its latest 8-K filing?

Adaptin Bio announced its common shares were approved for quotation on the OTCQB Venture Market under ticker APTN. The company expects trading to begin in about 6–8 weeks and will provide further material updates when available.

When is Adaptin Bio (APTN) expecting its OTCQB trading to begin?

Adaptin Bio expects OTCQB trading for its common shares to begin in approximately 6–8 weeks. This timeline reflects management’s guidance and is tied to establishing quotation under the APTN symbol on the OTCQB Venture Market.

What is Adaptin Bio’s lead program APTN-101 mentioned in the filing?

APTN-101 is Adaptin Bio’s lead brain bispecific T cell engager built on its BRiTE platform. It is FDA-cleared for a Phase 1 clinical trial in glioblastoma and has shown dose-responsive anti-tumor activity and a favorable safety profile in multiple preclinical models.

What technology platform is Adaptin Bio (APTN) using for its cancer therapies?

Adaptin Bio uses its proprietary BRiTE Brain Bispecific T cell Engager technology platform. BRiTE is designed to leverage manipulated immune cells to deliver therapeutic agents directly to brain tumors, aiming to overcome traditional barriers in treating intracerebral malignancies.

What risks and uncertainties does Adaptin Bio (APTN) highlight?

Adaptin Bio highlights risks around raising additional capital, controlling operating costs, conducting and timing clinical trials, obtaining regulatory approvals, securing drug supply, protecting intellectual property, and successfully initiating trading and developing a market for its common stock.

What therapeutic focus does Adaptin Bio (APTN) emphasize in this disclosure?

Adaptin Bio emphasizes developing novel therapies for oncology and central nervous system disorders, particularly difficult-to-treat cancers such as glioblastoma. Its BRiTE platform targets delivery of T cell engagers to brain tumors, aiming to improve outcomes for patients with intracerebral malignancies.

Filing Exhibits & Attachments

4 documents