Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Prothena Corp Public Ltd Co (PRTA) since 2014 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Prothena Corp Public Ltd Co. Table 2 shows the detailed insider transactions. This company's CIK number is 1559053.
Total stock buying since 2014: $78,424,010.
Total stock sales since 2014: $257,305,405.
Total stock option exercises since 2014: $20,237,273.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 100,000 | $1,279,000 | 6,279,684 | $50,838,781 | 0 | $0 |
| 2024 | 107,436 | $1,478,451 | 5,000 | $170,000 | 5,000 | $67,650 |
| 2023 | 0 | $0 | 490,835 | $30,650,867 | 490,835 | $8,231,326 |
| 2022 | 1,362,736 | $42,090,898 | 1,603,976 | $56,506,662 | 541,240 | $4,645,861 |
| 2021 | 1,607,640 | $33,194,455 | 168,369 | $8,623,907 | 168,369 | $2,229,878 |
| 2020 | 0 | $0 | 0 | $0 | 10,000 | $64,100 |
| 2017 | 1,000 | $51,317 | 115,309 | $7,179,717 | 115,309 | $1,102,644 |
| 2016 | 0 | $0 | 92,917 | $5,054,483 | 92,917 | $1,423,688 |
| 2015 | 0 | $0 | 303,250 | $18,527,261 | 309,916 | $2,321,001 |
| 2014 | 16,356 | $329,889 | 3,197,753 | $79,753,727 | 15,500 | $151,125 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-05 | 0 | $0 | 6,279,684 | $50,838,781 | 0 | $0 |
| 2025-01 | 100,000 | $1,279,000 | 0 | $0 | 0 | $0 |
| 2024-12 | 107,436 | $1,478,451 | 0 | $0 | 0 | $0 |
| 2024-01 | 0 | $0 | 5,000 | $170,000 | 5,000 | $67,650 |
| 2023-12 | 0 | $0 | 5,000 | $185,315 | 5,000 | $67,650 |
| 2023-11 | 0 | $0 | 5,000 | $170,000 | 5,000 | $67,650 |
| 2023-10 | 0 | $0 | 14,000 | $629,802 | 14,000 | $172,880 |
| 2023-09 | 0 | $0 | 21,000 | $1,109,725 | 21,000 | $281,580 |
| 2023-08 | 0 | $0 | 25,000 | $1,524,506 | 25,000 | $330,180 |
| 2023-07 | 0 | $0 | 30,000 | $2,019,243 | 30,000 | $386,830 |
| 2023-06 | 0 | $0 | 61,333 | $4,420,258 | 61,333 | $1,064,871 |
| 2023-05 | 0 | $0 | 165,000 | $11,935,144 | 165,000 | $4,218,350 |
| 2023-04 | 0 | $0 | 10,000 | $533,870 | 10,000 | $126,550 |
| 2023-03 | 0 | $0 | 67,000 | $3,244,387 | 67,000 | $947,500 |
| 2023-02 | 0 | $0 | 10,000 | $535,870 | 10,000 | $67,300 |
| 2023-01 | 0 | $0 | 77,502 | $4,342,747 | 77,502 | $499,985 |
| 2022-12 | 0 | $0 | 39,834 | $2,428,994 | 39,834 | $332,495 |
| 2022-11 | 0 | $0 | 54,833 | $3,316,900 | 54,833 | $534,239 |
| 2022-10 | 0 | $0 | 144,833 | $8,668,560 | 144,833 | $1,506,239 |
| 2022-09 | 0 | $0 | 99,798 | $4,602,141 | 99,798 | $716,864 |
| 2022-08 | 0 | $0 | 93,566 | $2,998,738 | 93,566 | $676,916 |
| 2022-07 | 0 | $0 | 93,376 | $3,035,776 | 93,376 | $768,858 |
| 2022-05 | 1,062,736 | $30,840,598 | 1,062,736 | $30,840,598 | 0 | $0 |
| 2022-04 | 0 | $0 | 10,000 | $375,150 | 10,000 | $64,100 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-05-06 | Ecor1 Capital, Llc | Sale | 1,984,053 | 7.64 | 15,164,117 |
| 2025-05-05 | Ecor1 Capital, Llc | Sale | 977,693 | 8.11 | 7,930,067 |
| 2025-05-02 | Ecor1 Capital, Llc | Sale | 3,317,938 | 8.36 | 27,744,597 |
| 2025-01-14 | Scully William P | Buy | 100,000 | 12.79 | 1,279,000 |
| 2024-12-31 | Scully William P | Buy | 32,000 | 13.25 | 423,968 |
| 2024-12-20 | Scully William P | Buy | 2,000 | 15.91 | 31,814 |
| 2024-12-18 | Scully William P | Buy | 73,436 | 13.93 | 1,022,669 |
| 2024-01-24 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 34.00 | 170,000 |
| 2024-01-24 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 13.53 | 67,650 |
| 2023-12-20 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 37.06 | 185,315 |
| 2023-12-20 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 13.53 | 67,650 |
| 2023-11-30 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 34.00 | 170,000 |
| 2023-11-30 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 13.53 | 67,650 |
| 2023-10-25 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 41.31 | 206,555 |
| 2023-10-25 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 13.53 | 67,650 |
| 2023-10-11 | Smith Brandon S. (Chief Operating Officer) | Sale | 4,000 | 47.18 | 188,732 |
| 2023-10-11 | Smith Brandon S. (Chief Operating Officer) | Option Ex | 4,000 | 11.12 | 44,480 |
| 2023-10-04 | Karp Carol D. (Chief Regulatory Officer) | Sale | 5,000 | 46.90 | 234,515 |
| 2023-10-04 | Karp Carol D. (Chief Regulatory Officer) | Option Ex | 5,000 | 12.15 | 60,750 |
| 2023-09-27 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 47.80 | 239,025 |
| 2023-09-27 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-09-19 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 52.36 | 261,805 |
| 2023-09-19 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 15.04 | 75,200 |
| 2023-09-13 | Garren Hideki (Chief Medical Officer) | Sale | 2,000 | 55.48 | 110,952 |
| 2023-09-13 | Garren Hideki (Chief Medical Officer) | Option Ex | 2,000 | 24.90 | 49,800 |
| 2023-09-13 | Smith Brandon S. (Chief Operating Officer) | Sale | 4,000 | 55.72 | 222,868 |
| 2023-09-13 | Smith Brandon S. (Chief Operating Officer) | Option Ex | 4,000 | 11.12 | 44,480 |
| 2023-09-06 | Karp Carol D. (Chief Regulatory Officer) | Sale | 5,000 | 55.02 | 275,075 |
| 2023-09-06 | Karp Carol D. (Chief Regulatory Officer) | Option Ex | 5,000 | 12.15 | 60,750 |
| 2023-08-30 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 55.39 | 276,955 |
| 2023-08-30 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-08-18 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 57.19 | 285,925 |
| 2023-08-18 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 15.04 | 75,200 |
| 2023-08-16 | Garren Hideki (Chief Medical Officer) | Sale | 2,000 | 58.94 | 117,880 |
| 2023-08-16 | Garren Hideki (Chief Medical Officer) | Option Ex | 2,000 | 24.90 | 49,800 |
| 2023-08-16 | Smith Brandon S. (Chief Operating Officer) | Sale | 4,000 | 59.10 | 236,384 |
| 2023-08-16 | Smith Brandon S. (Chief Operating Officer) | Option Ex | 4,000 | 11.12 | 44,480 |
| 2023-08-02 | Zago Wagner M. (Chief Scientific Officer) | Sale | 4,000 | 67.53 | 270,112 |
| 2023-08-02 | Zago Wagner M. (Chief Scientific Officer) | Option Ex | 4,000 | 12.15 | 48,600 |
| 2023-08-02 | Karp Carol D. (Chief Regulatory Officer) | Sale | 5,000 | 67.45 | 337,250 |
| 2023-08-02 | Karp Carol D. (Chief Regulatory Officer) | Option Ex | 5,000 | 12.15 | 60,750 |
| 2023-07-26 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 62.62 | 313,120 |
| 2023-07-26 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-07-19 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 69.52 | 347,585 |
| 2023-07-19 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 15.04 | 75,200 |
| 2023-07-12 | Garren Hideki (Chief Medical Officer) | Sale | 2,000 | 67.84 | 135,676 |
| 2023-07-12 | Garren Hideki (Chief Medical Officer) | Option Ex | 2,000 | 24.90 | 49,800 |
| 2023-07-12 | Smith Brandon S. (Chief Operating Officer) | Sale | 4,000 | 67.67 | 270,688 |
| 2023-07-12 | Smith Brandon S. (Chief Operating Officer) | Option Ex | 4,000 | 11.12 | 44,480 |
| 2023-07-05 | Zago Wagner M. (Chief Scientific Officer) | Sale | 4,000 | 68.34 | 273,344 |
| 2023-07-05 | Zago Wagner M. (Chief Scientific Officer) | Option Ex | 4,000 | 12.15 | 48,600 |
| 2023-07-05 | Karp Carol D. (Chief Regulatory Officer) | Sale | 5,000 | 68.34 | 341,680 |
| 2023-07-05 | Karp Carol D. (Chief Regulatory Officer) | Option Ex | 5,000 | 12.15 | 60,750 |
| 2023-07-03 | Selkoe Dennis J. | Sale | 5,000 | 67.43 | 337,150 |
| 2023-07-03 | Selkoe Dennis J. | Option Ex | 5,000 | 11.33 | 56,650 |
| 2023-06-28 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 69.93 | 349,670 |
| 2023-06-28 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-06-16 | Garren Hideki (Chief Medical Officer) | Sale | 7,331 | 74.00 | 542,494 |
| 2023-06-16 | Garren Hideki (Chief Medical Officer) | Option Ex | 7,331 | 24.90 | 182,541 |
| 2023-06-14 | Garren Hideki (Chief Medical Officer) | Sale | 4,669 | 73.96 | 345,319 |
| 2023-06-14 | Garren Hideki (Chief Medical Officer) | Option Ex | 4,669 | 24.90 | 116,258 |
| 2023-06-14 | Smith Brandon S. (Chief Operating Officer) | Sale | 5,333 | 74.03 | 394,801 |
| 2023-06-14 | Smith Brandon S. (Chief Operating Officer) | Option Ex | 5,333 | 11.12 | 59,302 |
| 2023-06-07 | Zago Wagner M. (Chief Scientific Officer) | Sale | 19,000 | 71.53 | 1,358,994 |
| 2023-06-07 | Zago Wagner M. (Chief Scientific Officer) | Option Ex | 19,000 | 20.98 | 398,620 |
| 2023-06-07 | Karp Carol D. (Chief Regulatory Officer) | Sale | 20,000 | 71.45 | 1,428,980 |
| 2023-06-07 | Karp Carol D. (Chief Regulatory Officer) | Option Ex | 20,000 | 12.84 | 256,800 |
| 2023-05-31 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 65.11 | 325,575 |
| 2023-05-31 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-05-19 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 74.05 | 370,250 |
| 2023-05-19 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 15.04 | 75,200 |
| 2023-05-17 | Kinney Gene G. (President and CEO) | Sale | 45,000 | 73.60 | 3,312,045 |
| 2023-05-17 | Kinney Gene G. (President and CEO) | Option Ex | 45,000 | 29.81 | 1,341,450 |
| 2023-05-17 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 95,000 | 74.44 | 7,072,274 |
| 2023-05-17 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 95,000 | 26.33 | 2,501,350 |
| 2023-05-03 | Selkoe Dennis J. | Sale | 15,000 | 57.00 | 855,000 |
| 2023-05-03 | Selkoe Dennis J. | Option Ex | 15,000 | 16.60 | 249,000 |
| 2023-04-26 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 53.83 | 269,140 |
| 2023-04-26 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-04-19 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 52.95 | 264,730 |
| 2023-04-19 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 15.04 | 75,200 |
| 2023-03-29 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 49.05 | 245,230 |
| 2023-03-29 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2023-03-20 | Walker Karin L (Chief Accounting Officer) | Sale | 5,000 | 47.99 | 239,945 |
| 2023-03-20 | Walker Karin L (Chief Accounting Officer) | Option Ex | 5,000 | 15.04 | 75,200 |
| 2023-03-15 | Garren Hideki (Chief Medical Officer) | Sale | 12,000 | 48.41 | 580,932 |
| 2023-03-15 | Garren Hideki (Chief Medical Officer) | Option Ex | 12,000 | 24.90 | 298,800 |
| 2023-03-15 | Malecek Michael J (Chief Legal Officer) | Sale | 15,000 | 48.40 | 726,030 |
| 2023-03-15 | Malecek Michael J (Chief Legal Officer) | Option Ex | 15,000 | 10.27 | 154,050 |
| 2023-03-15 | Walker Karin L (Chief Accounting Officer) | Sale | 20,000 | 48.40 | 968,040 |
| 2023-03-15 | Walker Karin L (Chief Accounting Officer) | Option Ex | 20,000 | 15.04 | 300,800 |
| 2023-03-15 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 10,000 | 48.42 | 484,210 |
| 2023-03-15 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 10,000 | 6.73 | 67,300 |
| 2023-02-15 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 10,000 | 53.59 | 535,870 |
| 2023-02-15 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 10,000 | 6.73 | 67,300 |
| 2023-01-18 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 10,000 | 56.16 | 561,570 |
| 2023-01-18 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 10,000 | 6.73 | 67,300 |
| 2023-01-10 | Cooke Shane | Sale | 5,000 | 52.92 | 264,610 |
| 2023-01-10 | Cooke Shane | Option Ex | 5,000 | 6.41 | 32,050 |
| 2023-01-05 | Collier Richard T | Sale | 10,000 | 52.67 | 526,700 |
| 2023-01-05 | Collier Richard T | Option Ex | 10,000 | 6.41 | 64,100 |
| 2023-01-03 | Ekman Lars | Sale | 31,668 | 57.40 | 1,817,678 |
| 2023-01-03 | Ekman Lars | Option Ex | 31,668 | 6.41 | 202,990 |
| 2022-12-21 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 10,000 | 58.83 | 588,310 |
| 2022-12-21 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 10,000 | 6.73 | 67,300 |
| 2022-12-12 | Cooke Shane | Sale | 5,000 | 60.14 | 300,700 |
| 2022-12-12 | Cooke Shane | Option Ex | 5,000 | 6.41 | 32,050 |
| 2022-12-05 | Collier Richard T | Sale | 5,000 | 62.59 | 312,955 |
| 2022-12-05 | Collier Richard T | Option Ex | 5,000 | 6.41 | 32,050 |
| 2022-12-01 | Garren Hideki (Chief Medical Officer) | Sale | 4,000 | 62.51 | 250,040 |
| 2022-12-01 | Garren Hideki (Chief Medical Officer) | Option Ex | 4,000 | 24.90 | 99,600 |
| 2022-12-01 | Ekman Lars | Sale | 15,834 | 61.70 | 976,989 |
| 2022-12-01 | Ekman Lars | Option Ex | 15,834 | 6.41 | 101,495 |
| 2022-11-30 | Malecek Michael J (Chief Legal Officer) | Sale | 5,000 | 62.96 | 314,815 |
| 2022-11-30 | Malecek Michael J (Chief Legal Officer) | Option Ex | 5,000 | 10.27 | 51,350 |
| 2022-11-23 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 10,000 | 61.36 | 613,630 |
| 2022-11-23 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 10,000 | 6.73 | 67,300 |
| 2022-11-18 | Walker Karin L (Chief Accounting Officer) | Sale | 10,000 | 57.66 | 576,590 |
| 2022-11-18 | Walker Karin L (Chief Accounting Officer) | Option Ex | 10,000 | 15.04 | 150,400 |
| 2022-11-10 | Cooke Shane | Sale | 5,000 | 55.73 | 278,645 |
| 2022-11-10 | Cooke Shane | Option Ex | 5,000 | 6.41 | 32,050 |
| 2022-11-07 | Collier Richard T | Sale | 5,000 | 55.78 | 278,910 |
| 2022-11-07 | Collier Richard T | Option Ex | 5,000 | 6.41 | 32,050 |
| 2022-11-01 | Garren Hideki (Chief Medical Officer) | Sale | 4,000 | 62.11 | 248,456 |
| 2022-11-01 | Garren Hideki (Chief Medical Officer) | Option Ex | 4,000 | 24.90 | 99,600 |
| 2022-11-01 | Ekman Lars | Sale | 15,833 | 63.53 | 1,005,854 |
| 2022-11-01 | Ekman Lars | Option Ex | 15,833 | 6.41 | 101,489 |
| 2022-10-27 | Malecek Michael J (Chief Legal Officer) | Sale | 20,000 | 62.00 | 1,240,000 |
| 2022-10-27 | Malecek Michael J (Chief Legal Officer) | Option Ex | 20,000 | 10.27 | 205,400 |
| 2022-10-26 | Malecek Michael J (Chief Legal Officer) | Sale | 65,000 | 60.25 | 3,916,445 |
| 2022-10-26 | Malecek Michael J (Chief Legal Officer) | Option Ex | 65,000 | 10.27 | 667,550 |
| 2022-10-24 | Walker Karin L (Chief Accounting Officer) | Sale | 20,000 | 57.74 | 1,154,800 |
| 2022-10-24 | Walker Karin L (Chief Accounting Officer) | Option Ex | 20,000 | 15.04 | 300,800 |
| 2022-10-19 | Nguyen Tran (Chief Strategy Officer and CFO) | Sale | 10,000 | 56.70 | 567,040 |
| 2022-10-19 | Nguyen Tran (Chief Strategy Officer and CFO) | Option Ex | 10,000 | 6.73 | 67,300 |
| 2022-10-10 | Cooke Shane | Sale | 5,000 | 55.88 | 279,375 |
| 2022-10-10 | Cooke Shane | Option Ex | 5,000 | 6.41 | 32,050 |
| 2022-10-05 | Collier Richard T | Sale | 5,000 | 58.35 | 291,750 |
| 2022-10-05 | Collier Richard T | Option Ex | 5,000 | 6.41 | 32,050 |
| 2022-10-03 | Garren Hideki (Chief Medical Officer) | Sale | 4,000 | 60.90 | 243,600 |
| 2022-10-03 | Garren Hideki (Chief Medical Officer) | Option Ex | 4,000 | 24.90 | 99,600 |
| 2022-10-03 | Ekman Lars | Sale | 15,833 | 61.62 | 975,550 |
| 2022-10-03 | Ekman Lars | Option Ex | 15,833 | 6.41 | 101,489 |
| 2022-09-28 | Kinney Gene G. (President and CEO) | Sale | 16,412 | 53.72 | 881,586 |
| 2022-09-28 | Kinney Gene G. (President and CEO) | Option Ex | 16,412 | 6.41 | 105,200 |
| 2022-09-28 | Cooke Shane | Sale | 10,000 | 48.09 | 480,900 |
| 2022-09-28 | Cooke Shane | Option Ex | 10,000 | 6.41 | 64,100 |
| 2022-09-28 | Ekman Lars | Sale | 31,666 | 48.09 | 1,522,817 |
| 2022-09-28 | Ekman Lars | Option Ex | 31,666 | 6.41 | 202,979 |
| 2022-09-28 | Collier Richard T | Sale | 25,000 | 48.09 | 1,202,250 |
Insider trading activities including stock purchases, stock sales, and option exercises of PRTA listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Prothena Corp Public Ltd Co (symbol PRTA, CIK number 1559053) see the Securities and Exchange Commission (SEC) website.