1 unchanged sentence
Rule 10b5-1 Trading Plans
−Removed: None of our directors or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934) adopted , modified, or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement during the fiscal quarter ended June 30, 2025.
+Added: None of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act adopted , modified, or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement during the fiscal quarter ended September 30, 2025.
Exhibit Number Description
+Added: 2.1 Merger Agreement, dated as of September 29, 2025, by and among the Registrant, Topco, Merger Sub, and Clywedog (Incorporated herein by reference to Exhibit 2.1 to the Registrant’s Form 8-K (File No.
+Added: 001-40367) filed with the Securities and Exchange Commission on September 30, 2025).
3.1 Articles of Association of the Registrant (Incorporated herein by reference to Exhibit 3.1 to the Registrant’s Form 8-K (File No.
17 unchanged sentences
BARINTHUS BIOTHERAPEUTICS PLC
−Removed: August 7, 2025
+Added: November 7, 2025
/s/ William Enright
3 unchanged sentences
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.