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PRTAHealthcare

Prothena Corporation plc (PRTA) Insider Trading

In the last 90 days, 1 Prothena Corporation plc (PRTA) insider reported 10 open-market purchases totaling $8,977,786 and no sales. The most recent open-market purchase was reported on Oct 23, 2026. Source: SEC Form 4 filings.

SEC-reported filing activity is provided for research purposes and is not investment advice.

90-day C-suite buyers
0
90-day purchase value
$8,977,786
Corporate buyers
1
Latest transaction
Oct 23, 2026

Executive filings

Open-market transaction history

Purchase and sale summaries are ordered by the latest reported transaction date.

Open-market insider purchase and sale transactions
DateInsider nameRoleTypeSharesPriceTotal value
Oct 23, 2026William P ScullyCorporate insiderOpen Market Purchase150,000$8.15$1,222,050
Oct 14, 2026William P ScullyCorporate insiderOpen Market Purchase110,000$8.36$920,051
Oct 8, 2026William P ScullyCorporate insiderOpen Market Purchase215,000$8.47$1,821,050
Oct 2, 2026William P ScullyCorporate insiderOpen Market Purchase100,000$8.57$857,240
Sep 29, 2026William P ScullyCorporate insiderOpen Market Purchase162,000$8.68$1,405,674
Sep 28, 2026William P ScullyCorporate insiderOpen Market Purchase103,500$8.60$889,872
Sep 18, 2026William P ScullyCorporate insiderOpen Market Purchase100,000$8.43$843,460
Sep 2, 2026William P ScullyCorporate insiderOpen Market Purchase27,000$9.47$255,739
Aug 20, 2026William P ScullyCorporate insiderOpen Market Purchase50,000$8.79$439,430
Aug 7, 2026William P ScullyCorporate insiderOpen Market Purchase37,500$8.62$323,220
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Common questions

PRTA insider trading FAQ

Are PRTA insiders buying or selling?
Over the last 90 days, PRTA insiders were net buyers, reporting $8,977,786 of open-market purchases and $0.00 of sales.
When was the last PRTA insider purchase?
The most recent open-market purchase of Prothena Corporation plc stock by an insider was reported on Oct 23, 2026, one of 10 purchases in the last 90 days.
Where does PRTA insider trading data come from?
Watch Insiders reads the SEC Form 4 filings that Prothena Corporation plc officers, directors, and 10% owners submit to EDGAR, and refreshes this page daily.