PROTHENA CORP PUBLIC LTD CO — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Nguyen Tran | Chief Strategy Officer and CFO | Sale | 4,802 | $48.16 | $231,264 | 8,398 | Mar 15, 2023 |
| Malecek Michael J | Chief Legal Officer | Sale | 6,436 | $48.13 | $309,765 | 8,564 | Mar 15, 2023 |
| Garren Hideki | Chief Medical Officer | Sale | 6,000 | $48.66 | $291,960 | — | Mar 15, 2023 |
| Nguyen Tran | Chief Strategy Officer and CFO | Sale | 9,336 | $53.30 | $497,609 | 3,864 | Feb 15, 2023 |
| Nguyen Tran | Chief Strategy Officer and CFO | Option Exercise | 10,000 | $6.73 | $67,300 | 13,200 | Jan 18, 2023 |
| Cooke Shane | — | Option Exercise | 5,000 | $6.41 | $32,050 | 5,000 | Jan 10, 2023 |
| COLLIER RICHARD T | — | Option Exercise | 5,000 | $6.41 | $32,050 | 6,219 | Jan 5, 2023 |
| Ekman Lars | — | Sale | 6,621 | $56.33 | $372,961 | 3,148 | Jan 3, 2023 |
| Nguyen Tran | Chief Strategy Officer and CFO | Option Exercise | 10,000 | $6.73 | $67,300 | 13,200 | Dec 21, 2022 |
| Cooke Shane | — | Option Exercise | 5,000 | $6.41 | $32,050 | 5,000 | Dec 12, 2022 |
| COLLIER RICHARD T | — | Sale | 949 | $65.02 | $61,704 | 1,219 | Dec 5, 2022 |
| Garren Hideki | Chief Medical Officer | Option Exercise | 4,000 | $24.90 | $99,600 | 4,000 | Dec 1, 2022 |
| Ekman Lars | — | Option Exercise | 15,834 | $6.41 | $101,496 | 16,077 | Dec 1, 2022 |
| Malecek Michael J | Chief Legal Officer | Option Exercise | 5,000 | $10.27 | $51,350 | 5,000 | Nov 30, 2022 |
| Nguyen Tran | Chief Strategy Officer and CFO | Option Exercise | 10,000 | $6.73 | $67,300 | 13,200 | Nov 23, 2022 |
| Walker Karin L | Chief Accounting Officer | Option Exercise | 10,000 | $15.04 | $150,400 | 10,000 | Nov 18, 2022 |
| Cooke Shane | — | Option Exercise | 5,000 | $6.41 | $32,050 | 5,000 | Nov 10, 2022 |
| COLLIER RICHARD T | — | Option Exercise | 5,000 | $6.41 | $32,050 | 6,219 | Nov 7, 2022 |
| Ekman Lars | — | Sale | 9,143 | $62.01 | $566,957 | 6,933 | Nov 1, 2022 |
| Garren Hideki | Chief Medical Officer | Sale | 3,489 | $61.82 | $215,690 | 511 | Nov 1, 2022 |
| Malecek Michael J | Chief Legal Officer | Sale | 20,000 | $62.00 | $1,240,000 | — | Oct 26, 2022 |
| Walker Karin L | Chief Accounting Officer | Sale | 1,164 | $58.98 | $68,653 | — | Oct 24, 2022 |
| Nguyen Tran | Chief Strategy Officer and CFO | Option Exercise | 10,000 | $6.73 | $67,300 | 13,200 | Oct 19, 2022 |
| Cooke Shane | — | Option Exercise | 5,000 | $6.41 | $32,050 | 5,000 | Oct 10, 2022 |
| COLLIER RICHARD T | — | Option Exercise | 5,000 | $6.41 | $32,050 | 6,219 | Oct 5, 2022 |
| Garren Hideki | Chief Medical Officer | Option Exercise | 4,000 | $24.90 | $99,600 | 4,000 | Oct 3, 2022 |
| Ekman Lars | — | Sale | 3,508 | $60.32 | $211,603 | 12,568 | Oct 3, 2022 |
| Cooke Shane | — | Sale | 10,000 | $48.09 | $480,900 | — | Sep 28, 2022 |
| Kinney Gene G. | President and CEO | Option Exercise | 16,412 | $6.41 | $105,201 | 29,205 | Sep 28, 2022 |
| COLLIER RICHARD T | — | Option Exercise | 25,000 | $6.41 | $160,250 | 26,219 | Sep 28, 2022 |
| Ekman Lars | — | Sale | 31,666 | $48.09 | $1,522,818 | 243 | Sep 28, 2022 |
| Kinney Gene G. | President and CEO | Option Exercise | 2,720 | $6.41 | $17,435 | 15,513 | Sep 21, 2022 |
| Nguyen Tran | Chief Strategy Officer and CFO | Sale | 10,000 | $30.75 | $307,500 | 3,200 | Sep 21, 2022 |
| Garren Hideki | Chief Medical Officer | Sale | 4,000 | $30.00 | $120,000 | — | Sep 15, 2022 |
| Nguyen Tran | Chief Strategy Officer and CFO | Option Exercise | 10,000 | $6.73 | $67,300 | 13,200 | Aug 24, 2022 |
| Kinney Gene G. | President and CEO | Sale | 2,181 | $32.03 | $69,857 | 12,793 | Aug 17, 2022 |
| Kinney Gene G. | President and CEO | Sale | 20,284 | $32.16 | $652,333 | 12,793 | Aug 12, 2022 |
| Kinney Gene G. | President and CEO | Option Exercise | 20,954 | $6.41 | $134,315 | 33,747 | Aug 5, 2022 |
| Garren Hideki | Chief Medical Officer | Option Exercise | 4,000 | $24.90 | $99,600 | 4,000 | Aug 1, 2022 |
| Kinney Gene G. | President and CEO | Sale | 376 | $32.00 | $12,032 | 12,793 | Jul 27, 2022 |
| Nguyen Tran | Chief Strategy Officer and CFO | Option Exercise | 20,560 | $6.73 | $138,369 | 23,760 | Jul 22, 2022 |
| Cooke Shane | — | Sale | 15,000 | $32.90 | $493,500 | — | Jul 20, 2022 |
| Garren Hideki | Chief Medical Officer | Option Exercise | 8,000 | $24.90 | $199,200 | 8,000 | Jul 6, 2022 |
| EcoR1 Capital, LLC | — | Sale | 1,062,736 | $29.02 | $30,840,599 | 11,584,280 | May 5, 2022 |
| Cooke Shane | — | Sale | 514 | $36.60 | $18,812 | — | Apr 11, 2022 |
| COLLIER RICHARD T | — | Option Exercise | 5,000 | $6.41 | $32,050 | 6,219 | Apr 5, 2022 |
| EcoR1 Capital, LLC | — | Purchase | 300,000 | $37.50 | $11,250,000 | 11,584,280 | Jan 12, 2022 |
| Selkoe Dennis J. | — | Sale | 2,133 | $46.81 | $99,846 | 5,712 | Jan 3, 2022 |
| Walker Karin L | Chief Accounting Officer | Sale | 1,819 | $58.43 | $106,284 | — | Nov 23, 2021 |
| Malecek Michael J | See Remarks | Option Exercise | 10,000 | $10.27 | $102,700 | 10,000 | Nov 19, 2021 |