Walker Karin L bought PRTA

July 28, 2026 · Form 4 insider transaction

Walker Karin L bought 15,000 shares of Prothena Corporation plc, a transaction worth N/A. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 2 days after the transaction.

Direction

Acquired (buy-side)

15,000

Price

N/A

Total value

N/A

InsiderWalker Karin L

RoleOfficer

CompanyProthena Corporation plc (PRTA)

SecurityOrdinary Shares, par value $0.01 per share

Transaction codeM — Option exercise

Transaction dateJuly 28, 2026

Filing dateJuly 30, 2026

Shares owned after25,000

OwnershipDirect

10b5-1 planNo

AmendedNo

Footnotes

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's Ordinary Shares upon vesting.

View the original Form 4 on SEC EDGAR