Alector, Inc. - ALEC
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Mar 26, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | RTW Investments, LP | 0.0% | 0 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | Roderick Wong | 0.0% | 0 | View |
| Feb 06, 2026 | SCHEDULE 13G/A | Arnon Rosenthal | 7.4% | 8,213,925 | View |
| Jan 30, 2026 | SCHEDULE 13G/A | The Vanguard Group | 6.32% | 6,908,054 | View |
| Jan 21, 2026 | SCHEDULE 13G/A | BlackRock, Inc. | 4.7% | 5,179,805 | View |
| Nov 14, 2025 | SCHEDULE 13G | TCG Crossover GP II, LLC | 4.6% | 5,000,000 | View |
| Nov 14, 2025 | SCHEDULE 13G | TCG Crossover Fund II, L.P. | 4.6% | 5,000,000 | View |
| Nov 14, 2025 | SCHEDULE 13G | TCG Crossover GP III, LLC | 4.6% | 5,000,000 | View |
| Nov 14, 2025 | SCHEDULE 13G | TCG Crossover Fund III, L.P. | 4.6% | 5,000,000 | View |
| Nov 14, 2025 | SCHEDULE 13G | Chen Yu | 9.2% | 10,000,000 | View |
| Nov 14, 2025 | SCHEDULE 13G | RTW Investments, LP | 6.9% | 6,990,806 | View |
| Nov 14, 2025 | SCHEDULE 13G | Roderick Wong | 6.9% | 6,990,806 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Polaris Venture Partners VI, L.P. | 0.5% | 498,468 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Polaris Venture Partners Founders' Fund VI, L.P. | 0.3% | 378,403 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Polaris Venture Partners VI (AIV), L.P. | 4.4% | 4,797,563 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Polaris Venture Partners VI (AIV-B), L.P. | 1.1% | 1,179,383 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Polaris Venture Management Co VI, L.L.C. | 6.3% | 6,853,817 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | David Barrett | 6.3% | 6,880,071 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Brian Chee | 6.3% | 6,880,084 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Jonathan A. Flint | 6.3% | 6,892,942 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Terrance G. McGuire | 6.5% | 7,095,251 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Amir Nashat | 6.4% | 6,932,617 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Bryce Youngren | 6.4% | 6,945,149 | View |
| Nov 07, 2025 | SCHEDULE 13G/A | FMR LLC | 3.6% | 3,599,820 | View |
| Nov 07, 2025 | SCHEDULE 13G/A | Abigail P. Johnson | 3.6% | 3,599,820 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.