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GT Biopharma, Inc.

For the period ended Jun 30, 2025. Filed Aug 14, 2025.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2025 · Filed Aug 14, 2025

GTBP$4.42-2.6%Stored close · as of Nov 6, 2026

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Item 5. Other Information

Amendment to 2023 Sponsored Research Agreement

The Company entered into the First Amendment to the 2023 Sponsored Research Agreement, effective as of June 18, 2025 (the “Amendment”), with the Regents of the University of Minnesota, which amended the 2023 Sponsored Research Agreement to expire on December 31, 2025. In addition, pursuant to the Amendment, payments amounting to $216,000 were added bringing the total payments due over the life of the 2023 Sponsored Research Agreement to approximately $1.9 million.

Rule 10b5-1 Trading Plans

During the six months ended June 30, 2025, none of our directors or officers (as defined in Rule 16a-1(f) under the Securities Exchange Act of 1934, as amended)adopted, amended, orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.