$20.26
0.190.95%
At Close: -
$20.32
0.060.30%
After Hours: Jul 5, 4:27 PM EDT
15 minutes delayed
Prothena Corp
PRTANASDAQ
Prothena Corp (NASDAQ:PRTA) Stock, Insider Trading Activity
Prothena Corp: Insider buying and selling updated today.
Institutional Shares Held
27.491M
Institutional Percentage Held
51.1%
| Jan 24, 2024 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $23.77 | -$102.35K | SELL-OPTIONS | 0.00% | 0 | Jan 24 | View |
| Dec 20, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $25.36 | -$118.30K | SELL-OPTIONS | 0.00% | 0 | Dec 20 | View |
| Nov 30, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $23.77 | -$102.35K | SELL-OPTIONS | 0.00% | 0 | Nov 30 | View |
| Oct 25, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $27.28 | -$137.54K | SELL-OPTIONS | 0.00% | 0 | Oct 25 | View |
| Oct 11, 2023 | Brandon S Smith | CHIEF OPERATING OFFICER | 0 | $28.93 | -$142.50K | SELL-OPTIONS | 0.00% | 0 | Oct 11 | View |
| Oct 04, 2023 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $29.38 | -$172.33K | SELL-OPTIONS | 0.00% | 0 | Oct 04 | View |
| Sep 27, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $28.82 | -$185.53K | SELL-OPTIONS | 0.00% | 0 | Sep 27 | View |
| Sep 19, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $33.70 | -$186.61K | SELL-OPTIONS | 0.00% | 0 | Sep 19 | View |
| Sep 13, 2023 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $40.19 | -$61.15K | SELL-OPTIONS | 0.00% | 0 | Sep 13 | View |
| Sep 13, 2023 | Brandon S Smith | CHIEF OPERATING OFFICER | 0 | $33.31 | -$177.48K | SELL-OPTIONS | 0.00% | 0 | Sep 13 | View |
| Sep 06, 2023 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $33.46 | -$213.05K | SELL-OPTIONS | 0.00% | 0 | Sep 06 | View |
| Aug 30, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $32.64 | -$223.72K | SELL-OPTIONS | 0.00% | 0 | Aug 30 | View |
| Aug 18, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $36.11 | -$210.72K | SELL-OPTIONS | 0.00% | 0 | Aug 18 | View |
| Aug 16, 2023 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $41.82 | -$67.68K | SELL-OPTIONS | 0.00% | 0 | Aug 16 | View |
| Aug 16, 2023 | Brandon S Smith | CHIEF OPERATING OFFICER | 0 | $34.92 | -$190.36K | SELL-OPTIONS | 0.00% | 0 | Aug 16 | View |
| Aug 02, 2023 | Wagner M Zago | CHIEF SCIENTIFIC OFFICER | 0 | $39.60 | -$219.58K | SELL-OPTIONS | 0.00% | 0 | Aug 02 | View |
| Aug 02, 2023 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $39.58 | -$274.32K | SELL-OPTIONS | 0.00% | 0 | Aug 02 | View |
| Jul 26, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $36.30 | -$260.29K | SELL-OPTIONS | 0.00% | 0 | Jul 26 | View |
| Jul 19, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $42.11 | -$270.74K | SELL-OPTIONS | 0.00% | 0 | Jul 19 | View |
| Jul 12, 2023 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $46.21 | -$85.23K | SELL-OPTIONS | 0.00% | 0 | Jul 12 | View |
| Jul 12, 2023 | Brandon S Smith | CHIEF OPERATING OFFICER | 0 | $39.31 | -$225.55K | SELL-OPTIONS | 0.00% | 0 | Jul 12 | View |
| Jul 05, 2023 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $40.14 | -$279.89K | SELL-OPTIONS | 0.00% | 0 | Jul 05 | View |
| Jul 05, 2023 | Wagner M Zago | CHIEF SCIENTIFIC OFFICER | 0 | $40.16 | -$224.05K | SELL-OPTIONS | 0.00% | 0 | Jul 05 | View |
| Jul 03, 2023 | Dennis J Selkoe | — | 0 | $39.38 | -$280.50K | SELL-OPTIONS | 0.00% | 4.208K | Jul 03 | View |
| Jun 28, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $40.05 | -$297.77K | SELL-OPTIONS | 0.00% | 0 | Jun 28 | View |
| Jun 20, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $41.97 | -$269.29K | SELL-OPTIONS | 0.00% | 0 | Jun 20 | View |
| Jun 16, 2023 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $49.45 | -$359.95K | SELL-OPTIONS | 0.00% | 0 | Jun 16 | View |
| Jun 14, 2023 | Brandon S Smith | CHIEF OPERATING OFFICER | 0 | $42.55 | -$335.26K | SELL-OPTIONS | 0.00% | 0 | Jun 14 | View |
| Jun 14, 2023 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $49.56 | -$230.26K | SELL-OPTIONS | 0.00% | 0 | Jun 14 | View |
| Jun 07, 2023 | Wagner M Zago | CHIEF SCIENTIFIC OFFICER | 0 | $48.58 | -$854.47K | SELL-OPTIONS | 0.00% | 0 | Jun 07 | View |
| Jun 07, 2023 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $42.12 | -$1.16M | SELL-OPTIONS | 0.00% | 0 | Jun 07 | View |
| May 31, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $37.46 | -$271.87K | SELL-OPTIONS | 0.00% | 0 | May 31 | View |
| May 19, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $44.52 | -$294.78K | SELL-OPTIONS | 0.00% | 0 | May 19 | View |
| May 17, 2023 | Gene G Kinney | PRESIDENT AND CEO | 0 | $51.75 | -$1.97M | SELL-OPTIONS | 0.00% | 12.793K | May 17 | View |
| May 17, 2023 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $50.07 | -$4.54M | SELL-OPTIONS | 0.00% | 3.2K | May 17 | View |
| May 05, 2023 | Dennis J Selkoe | — | 0 | $37.54 | -$583.89K | SELL-OPTIONS | 0.00% | 4.208K | May 03 | View |
| Apr 28, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $31.86 | -$215.94K | SELL-OPTIONS | 0.00% | 0 | Apr 26 | View |
| Apr 21, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $33.97 | -$189.28K | SELL-OPTIONS | 0.00% | 0 | Apr 19 | View |
| Mar 31, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $29.65 | -$193.77K | SELL-OPTIONS | 0.00% | 0 | Mar 29 | View |
| Mar 22, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $31.38 | -$163.41K | SELL-OPTIONS | 0.00% | 0 | Mar 20 | View |
| Mar 17, 2023 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $31.73 | -$667.55K | SELL-OPTIONS | 0.00% | 0 | Mar 15 | View |
| Mar 17, 2023 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $27.58 | -$417.01K | SELL-OPTIONS | 0.00% | 3.2K | Mar 15 | View |
| Mar 17, 2023 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $29.35 | -$572.54K | SELL-OPTIONS | 0.00% | 0 | Mar 15 | View |
| Mar 17, 2023 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $36.66 | -$282.14K | SELL-OPTIONS | 0.00% | 0 | Mar 15 | View |
| Feb 17, 2023 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $30.03 | -$466.10K | SELL-OPTIONS | 0.00% | 3.2K | Feb 15 | View |
| Jan 20, 2023 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $31.13 | -$488.01K | SELL-OPTIONS | 0.00% | 3.2K | Jan 18 | View |
| Jan 12, 2023 | Shane Cooke | DIRECTOR | 0 | $29.67 | -$232.56K | SELL-OPTIONS | 0.00% | 0 | Jan 10 | View |
| Jan 05, 2023 | Lars Ekman | DIRECTOR | 0 | $31.20 | -$784.91K | SELL-OPTIONS | 0.00% | 243 | Jan 03 | View |
| Jan 05, 2023 | Richard T Collier | DIRECTOR | 0 | $29.54 | -$231.30K | SELL-OPTIONS | 0.00% | 1.219K | Jan 05 | View |
| Dec 23, 2022 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $32.85 | -$522.39K | SELL-OPTIONS | 0.00% | 3.2K | Dec 21 | View |
| Dec 12, 2022 | Shane Cooke | DIRECTOR | 0 | $33.72 | -$273.14K | SELL-OPTIONS | 0.00% | 0 | Dec 12 | View |
| Dec 05, 2022 | Richard T Collier | DIRECTOR | 0 | $34.24 | -$278.31K | SELL-OPTIONS | 0.00% | 1.219K | Dec 05 | View |
| Dec 02, 2022 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $36.27 | -$260.03K | SELL-OPTIONS | 0.00% | 0 | Nov 30 | View |
| Dec 02, 2022 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $43.70 | -$150.44K | SELL-OPTIONS | 0.00% | 0 | Dec 01 | View |
| Dec 02, 2022 | Lars Ekman | — | 0 | $34.01 | -$873.91K | SELL-OPTIONS | 0.00% | 243 | Dec 01 | View |
| Nov 25, 2022 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $33.91 | -$543.55K | SELL-OPTIONS | 0.00% | 3.2K | Nov 23 | View |
| Nov 18, 2022 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $36.06 | -$420.31K | SELL-OPTIONS | 0.00% | 0 | Nov 18 | View |
| Nov 10, 2022 | Shane Cooke | DIRECTOR | 0 | $31.29 | -$248.78K | SELL-OPTIONS | 0.00% | 0 | Nov 10 | View |
| Nov 09, 2022 | Richard T Collier | DIRECTOR | 0 | $31.01 | -$246.03K | SELL-OPTIONS | 0.00% | 1.219K | Nov 07 | View |
| Nov 03, 2022 | Lars Ekman | — | 0 | $34.65 | -$894.17K | SELL-OPTIONS | 0.00% | 243 | Nov 01 | View |
| Nov 03, 2022 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $43.40 | -$147.97K | SELL-OPTIONS | 0.00% | 0 | Nov 01 | View |
| Oct 28, 2022 | Michael J Malecek | CHIEF LEGAL OFFICER | 0 | $35.49 | -$4.29M | SELL-OPTIONS | 0.00% | 0 | Oct 26 - Oct 27 | View |
| Oct 26, 2022 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $36.14 | -$843.81K | SELL-OPTIONS | 0.00% | 0 | Oct 24 | View |
| Oct 21, 2022 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $31.58 | -$497.09K | SELL-OPTIONS | 0.00% | 3.2K | Oct 19 | View |
| Oct 12, 2022 | Shane Cooke | DIRECTOR | 0 | $31.16 | -$247.50K | SELL-OPTIONS | 0.00% | 0 | Oct 10 | View |
| Oct 07, 2022 | Richard T Collier | DIRECTOR | 0 | $32.17 | -$257.57K | SELL-OPTIONS | 0.00% | 1.219K | Oct 05 | View |
| Oct 05, 2022 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $42.90 | -$144.00K | SELL-OPTIONS | 0.00% | 0 | Oct 03 | View |
| Oct 05, 2022 | Lars Ekman | DIRECTOR | 0 | $33.97 | -$872.59K | SELL-OPTIONS | 0.00% | 243 | Oct 03 | View |
| Sep 30, 2022 | Gene G Kinney | PRESIDENT AND CEO | 0 | $29.89 | -$770.81K | SELL-OPTIONS | 0.00% | 12.793K | Sep 28 | View |
| Sep 30, 2022 | Shane Cooke | — | 0 | $27.25 | -$416.80K | SELL-OPTIONS | 0.00% | 0 | Sep 28 | View |
| Sep 30, 2022 | Richard T Collier | — | 0 | $27.25 | -$1.04M | SELL-OPTIONS | 0.00% | 1.219K | Sep 28 | View |
| Sep 30, 2022 | Lars Ekman | — | 0 | $27.25 | -$1.32M | SELL-OPTIONS | 0.00% | 243 | Sep 28 | View |
| Sep 23, 2022 | Gene G Kinney | PRESIDENT AND CEO | 0 | $19.21 | -$69.65K | SELL-OPTIONS | 0.00% | 12.793K | Sep 21 | View |
| Sep 23, 2022 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $18.74 | -$240.20K | SELL-OPTIONS | 0.00% | 3.2K | Sep 21 | View |
| Sep 16, 2022 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $27.45 | -$20.40K | SELL-OPTIONS | 0.00% | 0 | Sep 15 | View |
| Aug 26, 2022 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $18.45 | -$234.37K | SELL-OPTIONS | 0.00% | 3.2K | Aug 24 | View |
| Aug 19, 2022 | Gene G Kinney | PRESIDENT AND CEO | 0 | $19.22 | -$55.87K | SELL-OPTIONS | 0.00% | 12.793K | Aug 17 | View |
| Aug 12, 2022 | Gene G Kinney | PRESIDENT AND CEO | 0 | $19.28 | -$899.08K | SELL-OPTIONS | 0.00% | 12.793K | Aug 10 - Aug 12 | View |
| Aug 05, 2022 | Gene G Kinney | PRESIDENT AND CEO | 0 | $19.46 | -$1.11M | SELL-OPTIONS | 0.00% | 12.793K | Aug 04 - Aug 05 | View |
| Aug 03, 2022 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $27.71 | -$22.48K | SELL-OPTIONS | 0.00% | 0 | Aug 01 | View |
| Jul 29, 2022 | Gene G Kinney | PRESIDENT AND CEO | 0 | $19.20 | -$9.62K | SELL-OPTIONS | 0.00% | 12.793K | Jul 27 | View |
| Jul 22, 2022 | Tran Nguyen | CHIEF STRATEGY OFFICER AND CFO | 0 | $19.63 | -$1.81M | SELL-OPTIONS | 0.00% | 3.2K | Jul 20 - Jul 22 | View |
| Jul 22, 2022 | Shane Cooke | DIRECTOR | 0 | $19.66 | -$397.35K | SELL-OPTIONS | 0.00% | 0 | Jul 20 | View |
| Jul 08, 2022 | Hideki Garren | CHIEF MEDICAL OFFICER | 0 | $27.45 | -$40.80K | SELL-OPTIONS | 0.00% | 0 | Jul 06 | View |
| May 09, 2022 | EcoR Capital LLC | 10% OWNER | 0 | $29.02 | $0.00 | p / s | 0.00% | 11.58428M | May 05 | View |
| Apr 13, 2022 | Shane Cooke | DIRECTOR | 0 | $20.74 | -$143.33K | SELL-OPTIONS | 0.00% | 0 | Apr 11 | View |
| Apr 07, 2022 | Richard T Collier | DIRECTOR | 0 | $22.91 | -$164.98K | SELL-OPTIONS | 0.00% | 1.219K | Apr 05 | View |
| Jan 12, 2022 | EcoR Capital LLC | 10% OWNER | 300K | $37.50 | $11.25M | BUY | 2.66% | 11.58428M | Jan 12 | View |
| Jan 05, 2022 | Dennis J Selkoe | DIRECTOR | 0 | $28.34 | -$191.08K | SELL-OPTIONS | 0.00% | 4.208K | Jan 03 | View |
| Nov 26, 2021 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $36.46 | -$193.61K | SELL-OPTIONS | 0.00% | 0 | Nov 23 | View |
| Nov 19, 2021 | Michael J Malecek | SEE REMARKS | 0 | $32.63 | -$447.30K | SELL-OPTIONS | 0.00% | 0 | Nov 19 | View |
| Nov 03, 2021 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $36.11 | -$421.42K | SELL-OPTIONS | 0.00% | 0 | Nov 01 | View |
| Oct 29, 2021 | Michael J Malecek | SEE REMARKS | 0 | $34.40 | -$482.55K | SELL-OPTIONS | 0.00% | 0 | Oct 27 | View |
| Oct 22, 2021 | Karin L Walker | CHIEF ACCOUNTING OFFICER | 0 | $38.61 | -$995.59K | SELL-OPTIONS | 0.00% | 0 | Oct 20 | View |
| Oct 01, 2021 | Dennis J Selkoe | — | 0 | $38.53 | -$293.03K | SELL-OPTIONS | 0.00% | 4.208K | Oct 01 | View |
| Oct 01, 2021 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $41.64 | -$531.94K | SELL-OPTIONS | 0.00% | 0 | Oct 01 | View |
| Sep 10, 2021 | Carol D Karp | CHIEF REGULATORY OFFICER | 0 | $43.51 | -$569.45K | SELL-OPTIONS | 0.00% | 0 | Sep 09 | View |
| Jul 30, 2021 | Dennis J Selkoe | — | 0 | $31.87 | -$176.06K | SELL-OPTIONS | 0.00% | 4.208K | Jul 30 | View |
| Jul 16, 2021 | Christopher Henney | DIRECTOR | 0 | $33.39 | -$490.17K | SELL-OPTIONS | 0.00% | 0 | Jul 14 | View |
| Jul 12, 2021 | Christopher Henney | — | 0 | $32.65 | -$1.09M | SELL-OPTIONS | 0.00% | 0 | Jul 12 | View |
| Jun 29, 2021 | Christopher Henney | DIRECTOR | 0 | $32.08 | -$375.66K | SELL-OPTIONS | 0.00% | 0 | Jun 25 | View |
| Jun 24, 2021 | Wagner M Zago | CHIEF SCIENTIFIC OFFICER | 0 | $31.98 | -$3.27M | SELL-OPTIONS | 0.00% | 0 | Jun 22 | View |
| Mar 25, 2021 | EcoR Capital LLC | 10% OWNER | 875K | $20.75 | $18.16M | BUY | 8.61% | 11.03428M | Mar 24 | View |
| Feb 25, 2021 | EcoR Capital LLC | 10% OWNER | 55.2K | $21.24 | $1.17M | BUY | 0.55% | 10.15928M | Feb 23 - Feb 24 | View |
| Feb 22, 2021 | EcoR Capital LLC | 10% OWNER | 44.1K | $3.68 | $162.10K | BUY | 0.44% | 10.10408M | Feb 18 | View |
| Feb 19, 2021 | Wagner M Zago | CHIEF SCIENTIFIC OFFICER | 0 | $15.96 | -$143.94K | SELL-OPTIONS | 0.00% | 0 | Feb 18 | View |
| Feb 17, 2021 | EcoR Capital LLC | 10% OWNER | 633.34K | $21.56 | $13.66M | BUY | 6.72% | 10.05998M | Feb 12 - Feb 17 | View |
| Feb 17, 2021 | Wagner M Zago | CHIEF SCIENTIFIC OFFICER | 0 | $15.32 | -$201.91K | SELL-OPTIONS | 0.00% | 0 | Feb 12 | View |
FAQ
Is insider trading legal?
Insider trading is legal so long as the insiders report those trades to the SEC. Illegal securities trading occurs when the insider is violating a fiduciary duty or fails to report their trades.
What are some examples of market manipulation?
Insider trading, pump and dump schemes, front running and wash trades are all examples of market manipulation. Investors who track insider asset movement should think carefully about why these insiders are trading their stocks before moving forward.
Browse insider trades on all stocks.