1 unchanged sentence
(c) Trading Plans
−Removed: During the fiscal quarter ended September 30, 2025, 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).
+Added: On January 30, 2026 , Dinesh V.
+Added: 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.
+Added: On February 27, 2026 , William Waddill , a member 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.
+Added: 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).
EXHIBIT INDEX
8 unchanged sentences
§1350), as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
−Removed: XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
+Added: Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL Document.
Inline XBRL Taxonomy Extension Schema Document
9 unchanged sentences
PROTAGONIST THERAPEUTICS, INC.
−Removed: November 6, 2025
/s/ Dinesh V.
1 unchanged sentence
(Principal Executive Officer)
−Removed: November 6, 2025
Executive Vice President, Chief Financial Officer
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.