$PRTA 4 SEC Filings

Filed On	Filing
26 Oct 2026	Form 4: Scully William P, 10% owner Bought 100,000 shares ($819K) · Bought 50,000 shares ($404K)
15 Oct 2026	Form 4: Scully William P, 10% owner Bought 100,000 shares ($835K) · Bought 10,000 shares ($84.6K)
09 Oct 2026	Form 4: Scully William P, 10% owner Bought 125,000 shares ($1.05M) · Bought 90,000 shares ($771K)
06 Oct 2026	Form 4: Scully William P, 10% owner Bought 100,000 shares ($857K)
30 Sep 2026	Form 4: Scully William P, 10% owner Bought 162,000 shares ($1.41M)
29 Sep 2026	Form 4: Scully William P, 10% owner Bought 103,500 shares ($890K)
21 Sep 2026	Form 4: Scully William P, 10% owner Bought 100,000 shares ($843K)
03 Sep 2026	Form 4: Scully William P, 10% owner Bought 27,000 shares ($256K)
21 Aug 2026	Form 4: Scully William P, 10% owner Bought 50,000 shares ($439K)
18 Aug 2026	Form 4: Scully William P, 10% owner Acquired 336,000 shares (Gift) · Gave 627,553 shares as a gift
11 Aug 2026	Form 4: Scully William P, 10% owner Acquired 251,553 shares (Gift)
10 Aug 2026	Form 4: Scully William P, 10% owner Bought 37,500 shares ($323K)
30 Jul 2026	Form 4: Zago Wagner M., Chief Scientific Officer Received 51,000 shares by exercise or conversion · Returned 51,000 shares to the issuer ($437K)
30 Jul 2026	Form 4: Walker Karin L, Chief Accounting Officer Received 15,000 shares by exercise or conversion · Returned 15,000 shares to the issuer ($128K)
30 Jul 2026	Form 4: Swanson Chad J., Chief Development Officer Received 51,000 shares by exercise or conversion · Returned 40,800 shares to the issuer ($349K) · Gave up 3,467 shares to cover exercise price or tax ($29.7K)
30 Jul 2026	Form 4: Smith Brandon S., Chief Operating Officer Received 78,000 shares by exercise or conversion · Returned 78,000 shares to the issuer ($668K)
30 Jul 2026	Form 4: Nguyen Tran, Chief Strategy Officer and CFO Received 57,000 shares by exercise or conversion · Returned 57,000 shares to the issuer ($488K)
30 Jul 2026	Form 4: Kinney Gene G., Director Received 84,000 shares by exercise or conversion · Returned 84,000 shares to the issuer ($719K)
30 Jul 2026	Form 4: Kingston Anne Evans, Chief Strategy Officer Gave up 3,498 shares to cover exercise price or tax ($29.9K) · Sold 7,662 shares ($64.9K)
30 Jul 2026	Form 4: Isaacs Michael John, General Counsel & Company Sec. Gave up 4,694 shares to cover exercise price or tax ($40.2K) · Sold 8,386 shares ($71.1K)

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