Prothena Corporation plc
Last updated September 27, 2026
Organization details
- Legal name
- Prothena Corporation plc
- Former names
- Neotope Corp Ltd
- Ownership
- Public
- Status
- Active
- SIC code
- 2834 — Pharmaceutical Preparations
- Jurisdiction of incorporation
- Ireland
- Headquarters city
- Dublin 2
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- PRTA
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001559053
Board of directors
-
Daniel G. Welch · DirectorSince 2024
-
Dennis J. Selkoe · DirectorSince 2023
-
Gene G. Kinney · Director · President and CEOSince 2025
-
Helen Susan Kim · DirectorSince 2023
-
Karl Anders Olof Harfstrand · DirectorSince 2023
-
Lars Ekman · DirectorSince 2023
-
Paula K. Cobb · DirectorSince 2023
-
Richard T. Collier · DirectorSince 2023
-
Shane Cooke · DirectorSince 2023
-
William H. Dunn Jr. · DirectorSince 2023
Chief executives
Gene G. Kinney
· President and CEO
Dates unknown
Director election results
Annual meeting of May 14, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
65.6%
-
72.8%
Board connections
3 of this board's directors also sit on 5 other boards.
- via Helen Susan Kim
- via Shane Cooke
- via Daniel G. Welch
- via Daniel G. Welch
- via Daniel G. Welch
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $4,959,099
- 10 purchases by 1 insider
- Sold, last 12 months
- $135,975
- 2 sales by 2 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 18, 2026 | SCULLY WILLIAM P 10% owner | Open-market purchase | +100,000 | $8.43 | $843,460 |
| Sep 2, 2026 | SCULLY WILLIAM P 10% owner | Open-market purchase | +27,000 | $9.47 | $255,739 |
| Aug 20, 2026 | SCULLY WILLIAM P 10% owner | Open-market purchase | +50,000 | $8.79 | $439,430 |
| Aug 18, 2026 | SCULLY WILLIAM P 10% owner | Gift | −627,553 | — | — |
| Aug 17, 2026 | SCULLY WILLIAM P 10% owner | Gift | +336,000 | — | — |
| Aug 10, 2026 | SCULLY WILLIAM P 10% owner | Gift | +251,553 | — | — |
| Aug 7, 2026 | SCULLY WILLIAM P 10% owner | Open-market purchase | +34,000 | $8.62 | $293,053 |
| Aug 7, 2026 | SCULLY WILLIAM P 10% owner | Open-market purchase | +3,500 | $8.62 | $30,167 |
| Jul 29, 2026 | Isaacs Michael John Officer (General Counsel & Company Sec.) | Open-market sale | −8,386 | $8.47 | $71,055 |
| Jul 29, 2026 | Kingston Anne Evans Officer (Chief Strategy Officer) | Open-market sale | −7,662 | $8.47 | $64,919 |
| Jul 28, 2026 | Isaacs Michael John Officer (General Counsel & Company Sec.) | Shares withheld for tax | −4,694 | $8.56 | $40,181 |
| Jul 28, 2026 | Kingston Anne Evans Officer (Chief Strategy Officer) | Shares withheld for tax | −3,498 | $8.56 | $29,943 |
| Jul 28, 2026 | Gene G. Kinney Director, Officer (President and CEO) | Option exercise | +84,000 | — | — |
| Jul 28, 2026 | Nguyen Tran Officer (Chief Strategy Officer and CFO) | Option exercise | +57,000 | — | — |
| Jul 28, 2026 | Smith Brandon S. Officer (Chief Operating Officer) | Option exercise | +78,000 | — | — |
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