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Compiled from SEC Form N-PX filings and Prothena Corporation plc’s Form 8-K, filed 2026-05-15 (Item 5.07 on EDGAR). Page generated 02 October 2026.
Explore Prothena Corporation plc in the interactive database Compare manager voting policies
These tallies are Prothena Corporation plc’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed 2026-05-15 (Item 5.07, “Submission of Matters to a Vote of Security Holders”). They cover every share voted at the meeting, not just the funds that file Form N-PX.
| Ballot item | For | Against | Abstain | Withheld | Broker non-votes | Outcome |
|---|---|---|---|---|---|---|
| Elect Director: Shane M. Cooke | 22,720,769 | 11,923,467 | 9,139 | -- | 7,374,142 | Majority: yes |
| Elect Director: Dennis J. Selkoe | 25,226,560 | 9,420,544 | 6,271 | -- | 7,374,142 | Majority: yes |
| Proposal 2: Ratification of Appointment of the Company's Independent Registered Public Accounting Firm for 2026 and Authorization of the Board of Directors to Approve the Remuneration of that Auditor. The shareholders ratified, in a non-binding vote, the appoi | 41,931,718 | 82,815 | 12,984 | -- | -- | Majority: yes |
| Proposal 3: Approval of Compensation of the Company's Named Executive Officers. The shareholders approved, in a non-binding advisory vote, the compensation of the Company's executive officers named in the Proxy Statement. | 32,303,076 | 1,145,400 | 1,204,899 | -- | 7,374,142 | Majority: yes |
Source: Prothena Corporation plc, Form 8-K, filed with the SEC on 2026-05-15 — read the filing on EDGAR.
Each item below shows how the 221 asset managers that disclosed a Prothena Corporation plc vote in their SEC Form N-PX filings actually voted. Share totals are the shares those managers' funds voted, summed across every fund they report. These are reported items, not a count of the ballot: fund filings describe one ballot item in different words. Two descriptions are shown as one item only on evidence — the same text (or one cut short of the other), the same director nominee, or a match to the same row of Prothena Corporation plc’s own Form 8-K tally — never because they merely read alike. A description that could not be joined that way is listed on its own, so one ballot item can appear more than once.
Meeting held 2026-05-14.
Combines 5 wordings of this item as funds reported it.
97% Majority: yes · of votes cast
Prothena Corporation plc’s own tally for this item (“Proposal 3: Approval of Compensation of the Company's Named Executive Officers. The shareholders approved, in a non-binding advisory vote, the compensation of the Company's executive officers named in the Proxy Statement”): 32,303,076 for, 1,145,400 against, per its Form 8-K filed 2026-05-15 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 52,353,237 outstanding shares: 62% for, 2% against (64% of the company cast a for/against vote).
The 211 asset managers below cast 99% of the shares they voted on this item FOR (32,572,803 for, 374,216 against).
| Asset manager | For | Against | Abstain | Withheld | Vote |
|---|---|---|---|---|---|
| Fidelity | 11,749,972 | 0 | 0 | 0 | For |
| BlackRock | 4,616,635 | 54,540 | 0 | 0 | For |
| Vanguard | 2,175,279 | 1,353 | 0 | 0 | For |
| State Street | 2,080,641 | 1,164 | 0 | 0 | For |
| Federated Hermes | 1,732,215 | 15,877 | 0 | 0 | For |
| ACADIAN ASSET MANAGEMENT LLC | 1,126,262 | 0 | 0 | 0 | For |
| Nuveen | 758,835 | 0 | 0 | 0 | For |
| TIAA | 755,110 | 0 | 0 | 0 | For |
| ADAR1 Capital Management, LLC | 753,455 | 0 | 0 | 0 | For |
| Charles Schwab | 724,449 | 0 | 0 | 0 | For |
| Two Sigma | 689,766 | 0 | 0 | 0 | For |
| GEODE CAPITAL MANAGEMENT, LLC | 687,173 | 0 | 0 | 0 | For |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 567,863 | 0 | 0 | 0 | For |
| DE Shaw | 494,014 | 0 | 0 | 0 | For |
| Northern Trust | 240,354 | 0 | 0 | 0 | For |
| Renaissance | 230,320 | 0 | 0 | 0 | For |
| Bridge Builder Trust | 220,592 | 0 | 0 | 0 | For |
| T. Rowe Price | 167,383 | 0 | 0 | 0 | For |
| PARAMETRIC PORTFOLIO ASSOCIATES LLC | 165,174 | 0 | 0 | 0 | For |
| American Century | 0 | 159,370 | 0 | 0 | Against |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 151,547 | 0 | 0 | 0 | For |
| Nationwide | 150,007 | 0 | 0 | 0 | For |
| MELLON INVESTMENTS Corp | 128,899 | 0 | 0 | 0 | For |
| AQR | 125,211 | 0 | 0 | 0 | For |
| Equitable | 111,638 | 0 | 0 | 0 | For |
Showing the 25 largest of 211 asset managers. See all 211 in the interactive database.
Meeting held 2025-11-19; no official results are on file for this meeting.
Combines 2 wordings of this item as funds reported it.
100% fund support · no official result
The 54 asset managers below cast 100% of the shares they voted on this item FOR (12,394,139 for, 0 against).
| Asset manager | For | Against | Abstain | Withheld | Vote |
|---|---|---|---|---|---|
| Fidelity | 5,445,046 | 0 | 0 | 0 | For |
| Vanguard | 1,822,887 | 0 | 0 | 0 | For |
| BlackRock | 1,789,427 | 0 | 0 | 0 | For |
| Federated Hermes | 659,056 | 0 | 0 | 0 | For |
| TIAA | 623,911 | 0 | 0 | 0 | For |
| Dimensional | 364,455 | 0 | 0 | 0 | For |
| Charles Schwab | 351,005 | 0 | 0 | 0 | For |
| Exchange Place Advisors Trust | 202,755 | 0 | 0 | 0 | For |
| Nationwide | 118,622 | 0 | 0 | 0 | For |
| Equitable | 111,638 | 0 | 0 | 0 | For |
| Columbia Threadneedle | 99,559 | 0 | 0 | 0 | For |
| American Century | 69,290 | 0 | 0 | 0 | For |
| QUANTITATIVE MASTER SERIES LLC | 66,028 | 0 | 0 | 0 | For |
| Goldman Sachs | 50,602 | 0 | 0 | 0 | For |
| GuideStone | 44,567 | 0 | 0 | 0 | For |
| MFS | 42,018 | 0 | 0 | 0 | For |
| T. Rowe Price | 39,441 | 0 | 0 | 0 | For |
| Voya | 36,992 | 0 | 0 | 0 | For |
| Lincoln Financial | 32,445 | 0 | 0 | 0 | For |
| Putnam | 30,282 | 0 | 0 | 0 | For |
| SEI | 28,750 | 0 | 0 | 0 | For |
| Brighthouse | 18,252 | 0 | 8,334 | 0 | For |
| ALPS ETF Trust | 25,998 | 0 | 0 | 0 | For |
| Northern Trust | 23,076 | 0 | 0 | 0 | For |
| Russell Investments | 22,903 | 0 | 0 | 0 | For |
Showing the 25 largest of 54 asset managers. See all 54 in the interactive database.
Meeting held 2026-05-14.
Combines 4 wordings of this item as funds reported it.
66% Majority: yes · of votes cast
Prothena Corporation plc’s own tally for this item (“Elect Director: Shane M. Cooke”): 22,720,769 for, 11,923,467 against, per its Form 8-K filed 2026-05-15 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 52,353,237 outstanding shares: 43% for, 23% against (66% of the company cast a for/against vote).
The 52 asset managers below cast 52.3% of the shares they voted on this item FOR (6,851,394 for, 6,247,529 against).
| Asset manager | For | Against | Abstain | Withheld | Vote |
|---|---|---|---|---|---|
| Fidelity | 535,381 | 3,894,973 | 0 | 0 | Against |
| BlackRock | 2,176,327 | 0 | 0 | 0 | For |
| Vanguard | 1,908,874 | 4,420 | 0 | 0 | For |
| State Street | 0 | 1,345,028 | 0 | 0 | Against |
| TIAA | 0 | 755,110 | 0 | 0 | Against |
| Federated Hermes | 728,422 | 0 | 0 | 0 | For |
| Charles Schwab | 362,188 | 0 | 0 | 0 | For |
| Bridge Builder Trust | 220,592 | 0 | 0 | 0 | For |
| Nationwide | 150,007 | 0 | 0 | 0 | For |
| Equitable | 61,798 | 49,840 | 0 | 0 | For |
| MFS | 0 | 111,437 | 0 | 0 | Against |
| Columbia Threadneedle | 82,422 | 0 | 0 | 0 | For |
| American Century | 79,685 | 0 | 0 | 0 | For |
| QUANTITATIVE MASTER SERIES LLC | 66,028 | 0 | 0 | 0 | For |
| GuideStone | 60,642 | 0 | 0 | 0 | For |
| Direxion Shares ETF Trust | 57,799 | 0 | 0 | 0 | For |
| Goldman Sachs | 48,210 | 0 | 0 | 0 | For |
| ProShares | 41,190 | 0 | 0 | 0 | For |
| CLEARWATER INVESTMENT TRUST | 38,331 | 0 | 0 | 0 | For |
| Lincoln Financial | 2,055 | 32,445 | 0 | 0 | Against |
| MASTER INVESTMENT PORTFOLIO | 29,427 | 0 | 0 | 0 | For |
| ETFis Series Trust I | 27,194 | 0 | 0 | 0 | For |
| Russell Investments | 25,368 | 0 | 0 | 0 | For |
| Northern Trust | 0 | 23,852 | 0 | 0 | Against |
| AIG/SunAmerica | 22,023 | 0 | 0 | 0 | For |
Showing the 25 largest of 52 asset managers. See all 52 in the interactive database.
Meeting held 2026-05-14.
Combines 4 wordings of this item as funds reported it.
73% Majority: yes · of votes cast
Prothena Corporation plc’s own tally for this item (“Elect Director: Dennis J. Selkoe”): 25,226,560 for, 9,420,544 against, per its Form 8-K filed 2026-05-15 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 52,353,237 outstanding shares: 48.2% for, 18% against (66% of the company cast a for/against vote).
The 52 asset managers below cast 63% of the shares they voted on this item FOR (8,251,362 for, 4,847,561 against).
| Asset manager | For | Against | Abstain | Withheld | Vote |
|---|---|---|---|---|---|
| Fidelity | 535,381 | 3,894,973 | 0 | 0 | Against |
| BlackRock | 2,176,327 | 0 | 0 | 0 | For |
| Vanguard | 1,910,230 | 3,064 | 0 | 0 | For |
| State Street | 1,345,028 | 0 | 0 | 0 | For |
| TIAA | 0 | 755,110 | 0 | 0 | Against |
| Federated Hermes | 728,422 | 0 | 0 | 0 | For |
| Charles Schwab | 362,188 | 0 | 0 | 0 | For |
| Bridge Builder Trust | 220,592 | 0 | 0 | 0 | For |
| Nationwide | 150,007 | 0 | 0 | 0 | For |
| Equitable | 61,798 | 49,840 | 0 | 0 | For |
| MFS | 0 | 111,437 | 0 | 0 | Against |
| Columbia Threadneedle | 82,422 | 0 | 0 | 0 | For |
| American Century | 79,685 | 0 | 0 | 0 | For |
| QUANTITATIVE MASTER SERIES LLC | 66,028 | 0 | 0 | 0 | For |
| GuideStone | 60,642 | 0 | 0 | 0 | For |
| Direxion Shares ETF Trust | 57,799 | 0 | 0 | 0 | For |
| Goldman Sachs | 48,210 | 0 | 0 | 0 | For |
| ProShares | 41,190 | 0 | 0 | 0 | For |
| CLEARWATER INVESTMENT TRUST | 38,331 | 0 | 0 | 0 | For |
| Lincoln Financial | 29,655 | 4,845 | 0 | 0 | For |
| MASTER INVESTMENT PORTFOLIO | 29,427 | 0 | 0 | 0 | For |
| ETFis Series Trust I | 27,194 | 0 | 0 | 0 | For |
| Russell Investments | 25,368 | 0 | 0 | 0 | For |
| Northern Trust | 23,852 | 0 | 0 | 0 | For |
| AIG/SunAmerica | 22,023 | 0 | 0 | 0 | For |
Showing the 25 largest of 52 asset managers. See all 52 in the interactive database.
Meeting held 2026-05-14.
Combines 3 wordings of this item as funds reported it.
99.8% Majority: yes · of votes cast
Prothena Corporation plc’s own tally for this item (“Proposal 2: Ratification of Appointment of the Company's Independent Registered Public Accounting Firm for 2026 and Authorization of the Board of Directors to Approve the Remuneration of that Auditor. The shareholders ra”): 41,931,718 for, 82,815 against, per its Form 8-K filed 2026-05-15 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 52,353,237 outstanding shares: 80% for, 0.2% against (80% of the company cast a for/against vote).
The 52 asset managers below cast 100% of the shares they voted on this item FOR (13,098,923 for, 0 against).
| Asset manager | For | Against | Abstain | Withheld | Vote |
|---|---|---|---|---|---|
| Fidelity | 4,430,354 | 0 | 0 | 0 | For |
| BlackRock | 2,176,327 | 0 | 0 | 0 | For |
| Vanguard | 1,913,294 | 0 | 0 | 0 | For |
| State Street | 1,345,028 | 0 | 0 | 0 | For |
| TIAA | 755,110 | 0 | 0 | 0 | For |
| Federated Hermes | 728,422 | 0 | 0 | 0 | For |
| Charles Schwab | 362,188 | 0 | 0 | 0 | For |
| Bridge Builder Trust | 220,592 | 0 | 0 | 0 | For |
| Nationwide | 150,007 | 0 | 0 | 0 | For |
| Equitable | 111,638 | 0 | 0 | 0 | For |
| MFS | 111,437 | 0 | 0 | 0 | For |
| Columbia Threadneedle | 82,422 | 0 | 0 | 0 | For |
| American Century | 79,685 | 0 | 0 | 0 | For |
| QUANTITATIVE MASTER SERIES LLC | 66,028 | 0 | 0 | 0 | For |
| GuideStone | 60,642 | 0 | 0 | 0 | For |
| Direxion Shares ETF Trust | 57,799 | 0 | 0 | 0 | For |
| Goldman Sachs | 48,210 | 0 | 0 | 0 | For |
| ProShares | 41,190 | 0 | 0 | 0 | For |
| CLEARWATER INVESTMENT TRUST | 38,331 | 0 | 0 | 0 | For |
| Lincoln Financial | 34,500 | 0 | 0 | 0 | For |
| MASTER INVESTMENT PORTFOLIO | 29,427 | 0 | 0 | 0 | For |
| ETFis Series Trust I | 27,194 | 0 | 0 | 0 | For |
| Russell Investments | 25,368 | 0 | 0 | 0 | For |
| Northern Trust | 23,852 | 0 | 0 | 0 | For |
| AIG/SunAmerica | 22,023 | 0 | 0 | 0 | For |
Showing the 25 largest of 52 asset managers. See all 52 in the interactive database.
Meeting held 2025-11-19; no official results are on file for this meeting.
100% fund support · no official result
The 3 asset managers below cast 100% of the shares they voted on this item FOR (232,350 for, 0 against).
| Asset manager | For | Against | Abstain | Withheld | Vote |
|---|---|---|---|---|---|
| JPMorgan | 173,125 | 0 | 0 | 0 | For |
| Lincoln Financial | 37,211 | 0 | 0 | 0 | For |
| CLEARWATER INVESTMENT TRUST | 22,014 | 0 | 0 | 0 | For |
Ranked by the number of Prothena Corporation plc shares each manager voted on the most widely held ballot item of the 2025-2026 meeting, shown as a share of the 52,353,237 shares outstanding at the time of that meeting.
| # | Asset manager | % of shares outstanding |
|---|---|---|
| 1 | Fidelity | 22.44% |
| 2 | BlackRock | 8.92% |
| 3 | Vanguard | 4.16% |
| 4 | State Street | 3.98% |
| 5 | Federated Hermes | 3.34% |
| 6 | ACADIAN ASSET MANAGEMENT LLC | 2.15% |
| 7 | Nuveen | 1.45% |
| 8 | TIAA | 1.44% |
| 9 | ADAR1 Capital Management, LLC | 1.44% |
| 10 | Charles Schwab | 1.38% |
Positions disclosed to the SEC on Schedules 13D and 13G, Form 13F and the company’s own proxy statement (DEF 14A).
| Holder | % outstanding | Disclosure |
|---|---|---|
| Entities Associated with Fidelity Investments | 15.38% | DEF14A |
| FMR (Fidelity) | 14.42% | 13F |
| SCULLY WILLIAM P | 10.27% | 13G |
| William P. Scully | 10.09% | DEF14A |
| Fennell Todd W. | 10.03% | 13G |
| BlackRock | 8.87% | 13F |
| Todd W. Fennell | 8.59% | DEF14A |
| Rubric Capital Management LP | 7.02% | DEF14A |
| Vanguard Group | 4.09% | 13F |
| State Street | 3.70% | 13F |
Percentages above are of 52,353,237 shares outstanding, as reported by Prothena Corporation plc on its Form 10-Q dated 2026-04-30 (see the filing on EDGAR). This is the count contemporaneous with the 2025-2026 meeting, so the percentages are the ones that were true then, not ones restated against today’s share count.
Every figure above is derived from filings made with the US Securities and Exchange Commission: Form N-PX, in which registered investment companies and institutional managers disclose how they voted every proxy, and Form 8-K Item 5.07, in which the company reports its own meeting results. Shares outstanding are taken from Prothena Corporation plc’s 10-Q dated 2026-04-30. This page is a static snapshot rebuilt weekly on 02 October 2026; a live search always shows the current data.
At Prothena Corporation plc's 2 shareholder meetings in the 2025-2026 proxy season (held 2025-11-19 and 2026-05-14), 221 asset managers reported how they voted in their SEC Form N-PX filings, covering 1,084 separate fund positions. Their filings are grouped here into 6 reported items; because filers word the same ballot item differently, that can be more than the number of items on the ballot. On the most widely held item of the season, voted at the meeting held 2026-05-14 — To approve, in a non-binding advisory vote, the compensation of the executive officers named in… — FOR was 97% of the votes cast (FOR divided by FOR plus AGAINST, the conventional basis for proxy support; abstentions, broker non-votes and unvoted shares are excluded because none of them took a side), which is more than half. Whether the item was approved is for the filing to say; that statement has not been read for this item. Source: Prothena Corporation plc's Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission on 2026-05-15.
Prothena Corporation plc proxy season coverage: 2023-2024 · 2024-2025 · 2025-2026 (this page).