SCULLY WILLIAM P bought PRTA
October 8, 2026 · Form 4 insider transaction
SCULLY WILLIAM P bought 90,000 shares of Prothena Corporation plc at $8.57 per share, a transaction worth $770.9K. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Acquired (buy-side)
Shares
90,000
Price
$8.57
Total value
$770.9K
InsiderSCULLY WILLIAM P
Role—
SecurityOrdinary Shares, par value $0.01 per share
Transaction codeP: Open-market purchase
Transaction dateOctober 8, 2026
Filing dateOctober 9, 2026
Shares owned after529,000
OwnershipIndirect
10b5-1 planNo
AmendedNo
Footnotes
The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $8.4000 to $8.8063, inclusive.