InsiderTrades

SCULLY WILLIAM P

SEC CIK 1045463 · EDGAR

Buying vs selling by month open-market trades, last 24 months, PRTA
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
PRTAPROTHENA CORP PUBLIC LTD CO10% 927.0K $7.71M — 162024-12-182026-09-18

Most active insiders at PRTA, 12 months

#InsiderTitleBoughtSold
1 SCULLY WILLIAM P10% $4.96M—
2 Isaacs Michael JohnGC, Company Sec —$71.1K
3 Kingston Anne EvansChief Strategy Off —$64.9K
4 Swanson Chad J.Chief Development Off ——
5 Smith Brandon S.COO ——
6 Zago Wagner M.CSO ——
7 Kinney Gene G.Pres, CEO, Dir ——
8 Walker Karin LCAO ——
9 Nguyen TranCFO, Chief Strategy Off ——

Transactions 16

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2026-09-21 16:23 2026-09-18 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $8.43 +100.0K 927.0K +12% +$843.5K
2026-09-03 18:23 2026-09-02 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $9.47 +27.0K 827.0K +3% +$255.7K
2026-08-21 14:32 2026-08-20 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $8.79 +50.0K 800.0K +7% +$439.4K
M 2026-08-18 16:03 2026-08-17+ PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% G - Gift $0.00 -291.6K 750.0K -28% $0
2026-08-11 16:08 2026-08-10 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% G - Gift $0.00 +251.6K 1.04M +32% $0
2026-08-10 15:24 2026-08-07 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $8.62 +34.0K 790.0K +4% +$293.1K
I 2026-08-10 15:24 2026-08-07 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $8.62 +3,500 83.5K +4% +$30.2K
2026-06-18 11:38 2026-06-16 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $7.90 +20.0K 756.0K +3% +$158.0K
2026-06-16 16:58 2026-06-15 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% G - Gift $0.00 -325.0K 736.0K -31% $0
2026-06-12 17:59 2026-06-11 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $8.17 +125.0K 1.06M +13% +$1.02M
2026-06-05 13:46 2026-06-04 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $9.31 +50.0K 936.0K +6% +$465.3K
2026-06-03 12:41 2026-06-02 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $9.43 +50.0K 886.0K +6% +$471.3K
2026-05-26 14:51 2026-05-22 PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $9.81 +100.0K 836.0K +14% +$981.3K
M 2025-05-02 2024-12-18+ PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% G - Gift $0.00 -265.7K 637.0K -29% $0
M 2025-05-02 2024-12-18+ PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% P - Purchase $13.26 +207.4K 1.30M +19% +$2.75M
MI 2025-05-02 2024-12-20+ PRTA PROTHENA CORP PUBLIC LTD CO SCULLY WILLIAM P 10% G - Gift $0.00 -52.0K 47.0K -53% $0

Purchase Sale Sale after option exercise All abbreviations