Isaacs Michael John sold PRTA
July 28, 2026 · Form 4 insider transaction
Isaacs Michael John sold 4,694 shares of Prothena Corporation plc at $8.56 per share, a transaction worth $40.2K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
4,694
Price
$8.56
Total value
$40.2K
InsiderIsaacs Michael John
RoleOfficer
SecurityOrdinary Shares, par value $0.01 per share
Transaction codeF: Shares withheld for taxes
Transaction dateJuly 28, 2026
Filing dateJuly 30, 2026
Shares owned after44,131
OwnershipDirect
10b5-1 planNo
AmendedNo