SCULLY WILLIAM P bought PRTA

September 28, 2026 · Form 4 insider transaction

SCULLY WILLIAM P bought 103,500 shares of Prothena Corporation plc at $8.60 per share, a transaction worth $889.9K. 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
103,500
Price
$8.60
Total value
$889.9K
Role—
SecurityOrdinary Shares, par value $0.01 per share
Transaction codeP: Open-market purchase
Transaction dateSeptember 28, 2026
Filing dateSeptember 29, 2026
Shares owned after187,000
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 $8.1582 to $8.8500, inclusive. The reporting person undertakes to provide to Prothena Corp Public Ltd Co, any security holder of Prothena Corp Public Ltd Co, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.; The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.

View the original Form 4 on SEC EDGAR