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GT Biopharma Reports First Quarter 2026 Financial Results
Phase 1 trial evaluating GTB-3650 TriKE® remains ongoing, with additional updates anticipated in 2H 2026
Phase 1 basket trial evaluating GTB-5550 TriKE® in multiple solid tumor types known to express B7-H3 initiated May 2026 with updates anticipated in 2H 2026 as enrollment progresses through dose escalation cohorts
Cash balance as of March 31, 2026 of approximately $9 million anticipated to provide sufficient cash runway through Q4 2026
SAN FRANCISCO, CALIFORNIA, May 15, 2026 (GLOBE NEWSWIRE) -- GT Biopharma, Inc. (the “Company”) (NASDAQ: GTBP), a clinical stage immuno-oncology company focused on developing innovative therapeutics based on the Company's proprietary natural killer (NK) cell engager TriKE® platform, today announced first quarter 2026 financial results for the period ended March 31, 2026.
"With the initiation of our GTB-5550 Phase 1 trial, we have now advanced three TriKE® candidates into the clinic, a significant milestone that underscores the continued momentum of our pipeline," said Michael Breen, Executive Chairman and Chief Executive Officer. "GTB-3650 has demonstrated an excellent safety profile thus far, and we look forward to continuing enrollment progress. With sufficient cash runway through Q4 2026, we look forward to providing updates on both programs in the second half of 2026."
GTB-3650 TriKE for CD33 positive leukemias
The ongoing Phase 1 dose escalation study is evaluating GTB-3650 for relapsed or refractory (r/r) CD33 expressing hematologic malignancies, including refractory acute myeloid leukemia and high-risk myelodysplastic syndrome. Enrollment is ongoing, with Cohort 4 enrollment now complete and a total of 8 patients treated across the first four cohorts; the Company expects to provide continued progress updates throughout 2026. Dose escalation may continue up to Cohort 7 as necessary with the potential to evaluate GTB-3650 in a total of 14 patients (two patients per cohort). GTB-3650 is dosed in two-week blocks, two weeks on and two weeks off, for up to four months based on clinical benefit. The trial aims to assess the safety, pharmacokinetics, pharmacodynamics, in vivo expansion of endogenous patient NK cells and clinical activity.
GTB-5550 TriKE for B7H3 positive solid tumor cancers
The ongoing Phase 1 trial with GTB-5550 is the first nanobody TriKE® tested with more patient-friendly subcutaneous dosing. The Phase 1a dose escalation portion of the trial is focused primarily on enrolling prostate cancer patients and will evaluate up to 6 dose levels to identify the maximum tolerated dose (MTD). After the dose escalation phase, the Phase 1b expansion component will enroll patients with up to 7 different tumor types (castration-resistant prostate cancer, ovarian cancer, breast cancer, head and neck cancer, non-small cell lung cancer, pancreatic cancer, and bladder cancer) and further evaluate its safety, tolerability and preliminary anti-tumor activity.
GTB-5550 will be administered by subcutaneous (SQ) injection in the abdominal area for 5 consecutive days during Week 1 and Week 2 followed by 2 weeks of no treatment. One treatment cycle is 4 weeks in duration. Subsequent cycles receive treatment three times weekly for 2 weeks followed by 2 weeks of no treatment. A minimum of 2 cycles is planned, and patient-appropriate disease reassessment is performed after 2 cycles and every 8-12 weeks thereafter. Treatment may continue until disease progression, unacceptable toxicity, patient refusal, or treatment is no longer in the best interest of the patient. Patients are followed for 12 months to determine progression free survival (PFS) and overall survival (OS). More details can be found on clinicaltrials.gov with the identifier: NCT07541573.
First Quarter Ended March 31, 2026 Financial Summary
Cash Position: The Company had cash and cash equivalents of approximately $9 million as of March 31, 2026, which is anticipated to be sufficient to fund the Company’s operations through the fourth quarter of 2026.
Research and Development (R&D) Expenses: R&D expenses for the second quarter of 2026 were approximately $400,000 compared to $1.1 million for the same comparable quarter of 2025. The $700,000 decrease was primarily due to a reduction in production costs. R&D expenses primarily relate to the Company’s continued licensing, development, production, and clinical trials of its most advanced TriKE® product candidates GTB-3650 and GTB-5550 along with the progression on other promising product candidates.
Selling, General and Administrative (SG&A) Expenses (Excluding Stock Compensation): SG&A expenses for the second quarter of 2026 were approximately $2.4 million compared to $800,000 for the same comparable quarter of 2025. The $1.6 million increase was primarily due to an increase in marketing expenses, and to a lesser extent, legal fees.
Loss from Operations: The Company reported a loss from operations for the second quarter of 2026 of approximately $2.8 million compared to $1.9 million for the same comparable quarter of 2025. The 900,000 increase was primarily due to $1.6 million increase in SG&A (as described above).
Net Loss: The Company reported a net loss of approximately $2.8 million for the second quarter of 2026, compared to $800,000 for same comparable quarter of 2025. The $2 million increase consisted primarily of a $1.6 million increase in SG&A (as described above), and a decrease in non-recurring other income of approximately $1.1 million.
About GT Biopharma, Inc.
GT Biopharma, Inc. is a clinical stage biopharmaceutical company focused on the development and commercialization of immuno-oncology therapeutic products based on our proprietary TriKE® NK cell engager platform. Our TriKE® platform is designed to harness and enhance the cancer killing abilities of a patient’s immune system’s natural killer cells. GT Biopharma has an exclusive worldwide license agreement with the University of Minnesota to further develop and commercialize therapies using TriKE® technology. For more information, please visit gtbiopharma.com.
Forward-Looking Statements
Certain statements in this press release may constitute "forward-looking statements" regarding future events and our future results. All statements other than statements of historical facts are statements that could be deemed to be forward- looking statements. These statements are based on current expectations, estimates, forecasts, and projections about the markets in which we operate and the beliefs and assumptions of our management. Words such as “aims,” "expects," "anticipates," "targets," "goals," "projects", "intends," "plans," "believes," "seeks," "estimates," "endeavors," "strives," "may," or variations of such words, and similar expressions are intended to identify such forward-looking statements. Readers are cautioned that the use of these forward-looking statements are subject to a number of risks, uncertainties and assumptions that are difficult to predict, estimate or verify. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Such risks and uncertainties include (i) the Company’s ability to continue as a going concern; (ii) the risk that if the Company experiences delays or difficulties in the enrollment of patients in clinical trials, those clinical trials could take longer than expected to complete and the Company’s receipt of necessary regulatory approvals could be delayed or prevented; (iii) the risk that the Company will need additional capital to conduct its operations and develop its products, and the Company’s ability to obtain the necessary funding is uncertain; (iv) the risk that the Company’s common stock may be delisted in the future if the Company is unable to maintain compliance with continued listing requirements; (v) the risk that the Company’s products may fail to achieve necessary safety and efficacy endpoints during clinical trials, which may limit the company’s ability to general revenues from therapeutic products and (vi) those other factors described in our most recent annual report on Form 10-K, as such may be amended or supplemented by subsequent quarterly reports on Form 10-Q, or other reports filed with the Securities and Exchange Commission. Readers are cautioned not to place undue reliance on these forward-looking statements. The forward-looking statements are made only as of the date hereof, and we undertake no obligation to publicly release the result of any revisions to these forward-looking statements. For more information, please refer to our filings with the Securities and Exchange Commission.
TriKE® is a registered trademark owned by GT Biopharma, Inc.
Investor Relations Contact:
LifeSci Advisors
Corey Davis, Ph.D.
cdavis@lifesciadvisors.com
212-915-2577
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