Prothena plc Insider Trades

PRTA

Track insider trading activity from Prothena plc executives and directors. See which insiders are buying and selling PRTA stock.

Trades Last 12 Months

PRTA Price

All Insider Trades for Prothena plc

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Scully William P 10% owner
Holding Value $8.78M 1,037,000 shares
Last Trade
Oct 14, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$84.6k 10,000 shares
$8.46
$8.47
Isaacs Michael John General Counsel & Company Sec.
Holding Value $303k 35,745 shares
Last Trade
Jul 29, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$71k 8,386 shares
$8.47
$8.47
Kingston Anne Evans Chief Strategy Officer
Holding Value $472k 55,782 shares
Last Trade
Jul 29, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$64.9k 7,662 shares
$8.47
$8.47
Zago Wagner M. Chief Scientific Officer
Holding Value $0 0 shares
Last Trade
Jul 28, 2026 Sale (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$437k 51,000 shares
$8.56
$8.47
Kinney Gene G. President And CEO
Holding Value $583k 68,793 shares
Last Trade
Jul 28, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$719k 84,000 shares
$8.56
$8.47
Nguyen Tran Chief Strategy Officer And CFO
Holding Value $823k 97,205 shares
Last Trade
Jul 28, 2026 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$488k 57,000 shares
$8.56
$8.47
Smith Brandon S. Chief Operating Officer
Holding Value $0 0 shares
Last Trade
Jul 28, 2026 Sale (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$668k 78,000 shares
$8.56
$8.47
Swanson Chad J. Chief Development Officer
Holding Value $0 0 shares
Last Trade
Jul 28, 2026 Sale (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$437k 51,000 shares
$8.56
$8.47
Walker Karin L Chief Accounting Officer
Holding Value $212k 25,000 shares
Last Trade
Jul 28, 2026 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$128k 15,000 shares
$8.56
$8.47
Holding Value $229k 27,000 shares
Last Trade
May 15, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 27,000 shares
$9.76
$8.47
Ekman Lars Director
Holding Value $229k 27,000 shares
Last Trade
May 15, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 27,000 shares
$9.76
$8.47
Holding Value $229k 27,000 shares
Last Trade
May 15, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 27,000 shares
$9.76
$8.47
Cooke Shane Director
Holding Value $229k 27,000 shares
Last Trade
May 15, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 27,000 shares
$9.76
$8.47
Welch Daniel G Director
Holding Value $229k 27,000 shares
Last Trade
May 15, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 27,000 shares
$9.76
$8.47
Selkoe Dennis J. Director
Holding Value $229k 27,000 shares
Last Trade
May 15, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 27,000 shares
$9.76
$8.47
Malecek Michael J Chief Legal Officer
Holding Value $1.61M 190,000 shares
Last Trade
Mar 03, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.78M 190,000 shares
$9.36
$8.47
Kim Helen Susan Director
Holding Value $171k 20,183 shares
Last Trade
May 14, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$139k 20,183 shares
$6.89
$8.47
Cobb Paula K Director
Holding Value $171k 20,183 shares
Last Trade
May 14, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$139k 20,183 shares
$6.89
$8.47
Ecor1 Capital, Llc 10% owner
Holding Value $44.9M 5,304,596 shares
Last Trade
May 06, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$15.2M 1,984,053 shares
$7.64
$8.47
Ford David A Chief People Officer
Holding Value $911k 107,500 shares
Last Trade
Mar 05, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.61M 107,500 shares
$14.95
$8.47

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