AlphaYouMJ
Insider selling
Michael John Isaacs sold $71K of Prothena Corp Public Ltd Co (PRTA) stock
Michael John Isaacs, General Counsel & Company Sec. of Prothena Corp Public Ltd Co (PRTA), sold 8,386 shares of PRTA stock worth $71K, per an SEC Form 4 filed Jul 31, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Jul 28, 2026, 3 days before it was made public.
PRTA has moved -0.6% since the trade date, from $8.56 to $8.51 (Sep 21, 2026 close).
- Traded
- Jul 28, 2026
- Disclosed
- Jul 31, 2026
- Filing delay
- 3 days
- Price since
- -0.6%
- Role
- General Counsel & Company Sec.
- Source
- SEC Form 4
More PRTA insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.