Maze Therapeutics, Inc. has 13 Schedule 13D or 13G filings on record since 2025-08-14. 5 holders' latest filing reports 5% or more of common stock, $0.001 par value per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Third Rock Ventures IV, L.P. | 9.3% | 4,473,958 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Deep Track Capital, LP | 9.02% | 3,948,910 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| Frazier Life Sciences Public Fund, L.P. | 9% | 4,342,266 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Janus Henderson Group Plc | 5.8% | 2,858,876 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| BlackRock, Inc. | 5.4% | 2,978,114 | SCHEDULE 13G, 2026-07-29 | 2026-06-30 |
| Matrix Capital Management Company, LP | 3.5% | 1,653,684 | SCHEDULE 13G/A, 2025-11-13 | 2025-09-30 |
| Alphabet Holdings LLC | 2.9% | 1,388,583 | SCHEDULE 13G/A, 2026-02-06 | 2025-12-31 |
| James Tananbaum | 1.4% | 608,948 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| Paradigm BioCapital Advisors LP | 0% | 0 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-14 | Deep Track Capital, LP | 9.02% | SCHEDULE 13G/A |
| 2025-08-14 | Janus Henderson Group Plc | 6% | SCHEDULE 13G/A |
| 2025-08-14 | Frazier Life Sciences Public Fund, L.P. | 7.7% | SCHEDULE 13G/A |
| 2025-11-13 | Matrix Capital Management Company, LP | 3.5% | SCHEDULE 13G/A |
| 2025-11-14 | James Tananbaum | 1.4% | SCHEDULE 13G/A |
| 2025-11-14 | Janus Henderson Group Plc | 7.3% | SCHEDULE 13G/A |
| 2026-02-06 | Alphabet Holdings LLC | 2.9% | SCHEDULE 13G/A |
| 2026-02-13 | Third Rock Ventures IV, L.P. | 9.3% | SCHEDULE 13G/A |
| 2026-02-13 | Frazier Life Sciences Public Fund, L.P. | 9% | SCHEDULE 13G/A |
| 2026-04-01 | Paradigm BioCapital Advisors LP | 6.1% | SCHEDULE 13G |
| 2026-05-15 | Janus Henderson Group Plc | 5.8% | SCHEDULE 13G/A |
| 2026-07-29 | BlackRock, Inc. | 5.4% | SCHEDULE 13G |
| 2026-08-14 | Paradigm BioCapital Advisors LP | 0% | SCHEDULE 13G/A |
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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.