Annexon Inc has 14 Schedule 13D or 13G filings on record since 2025-08-06. 6 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Fmr LLC | 11.9% | 19,518,496 | SCHEDULE 13G/A, 2026-07-08 | 2026-06-30 |
| Redmile Group, LLC | 9.9% | 17,918,459 | SCHEDULE 13G/A, 2026-07-08 | 2026-07-01 |
| BlackRock, Inc. | 8% | 13,128,281 | SCHEDULE 13G/A, 2026-07-27 | 2026-06-30 |
| Satter Muneer A | 7.2% | 10,444,134 | SCHEDULE 13D/A, 2025-11-21 | 2025-11-19 |
| State Street Corporation | 6% | 9,824,321 | SCHEDULE 13G, 2026-08-07 | 2026-06-30 |
| Bvf Partners L P | 5.4% | 8,698,173 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Logos Global Management LP | 0% | 0 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-06 | Fmr LLC | 14.3% | SCHEDULE 13G/A |
| 2025-08-14 | Logos Global Management LP | 0% | SCHEDULE 13G/A |
| 2025-10-30 | The Vanguard Group | 5.31% | SCHEDULE 13G |
| 2025-11-05 | Fmr LLC | 10.1% | SCHEDULE 13G/A |
| 2025-11-21 | Satter Muneer A | 7.2% | SCHEDULE 13D/A |
| 2026-01-21 | BlackRock, Inc. | 6.1% | SCHEDULE 13G/A |
| 2026-02-05 | Fmr LLC | 7.1% | SCHEDULE 13G/A |
| 2026-02-17 | Redmile Group, LLC | 9.9% | SCHEDULE 13G/A |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-15 | Bvf Partners L P | 5.4% | SCHEDULE 13G/A |
| 2026-07-08 | Fmr LLC | 11.9% | SCHEDULE 13G/A |
| 2026-07-08 | Redmile Group, LLC | 9.9% | SCHEDULE 13G/A |
| 2026-07-27 | BlackRock, Inc. | 8% | SCHEDULE 13G/A |
| 2026-08-07 | State Street Corporation | 6% | SCHEDULE 13G |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.