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Protagonist Therapeutics, Inc

For the period ended Mar 31, 2026. Filed May 5, 2026.

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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.

Mar 31, 2026 · Filed May 5, 2026

PTGX$135.90+2.9%Stored close · as of Nov 9, 2026

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Item 5. Other Information

(c)Trading Plans

On January 30, 2026, Dinesh V. Patel, Ph.D., our Chief Executive Officer and a member of our Board of Directors (the “Board”), adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell up to 300,000 shares of the Company’s common stock through October 9, 2026, or such earlier date when all transactions under the trading plan are completed, subject to certain conditions.

On February 27, 2026, William Waddill, amember of our Board, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell up to 27,000 shares of the Company’s common stock through May 31, 2027, or such earlier date when all transactions under the trading plan are completed, subject to certain conditions.

Except as discussed above, during the fiscal quarter ended March 31, 2026, no director or Section 16 officer adopted or terminated any Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement (in each case as defined in Item 408(a) of Regulation S-K).

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