Lyell Immunopharma, Inc. has 12 Schedule 13D or 13G filings on record since 2025-08-01. 5 holders' latest filing reports 5% or more of common stock, par value $0.0001. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| ARCH Venture Fund IX, L.P. | 13.9% | 3,247,162 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Innovative Cellular Therapeutics Holdings Limited | 12.3% | 3,000,000 | SCHEDULE 13G/A, 2026-06-18 | 2026-05-18 |
| Euler Fund, L.P. | 6.71% | 1,426,528 | SCHEDULE 13G, 2026-04-21 | 2026-03-06 |
| Explore Investments LLC | 6.6% | 1,529,054 | SCHEDULE 13G/A, 2026-05-08 | 2026-03-31 |
| Gates Frontier, LLC | 5.6% | 1,040,964 | SCHEDULE 13G, 2025-08-01 | 2025-07-25 |
| MWG Caph Ltd | 4.3% | 1,008,116 | SCHEDULE 13G/A, 2026-05-11 | 2026-03-31 |
| Newton (PTC) Limited | 3.93% | 754,698 | SCHEDULE 13G/A, 2025-11-12 | 2025-09-30 |
| James B. Tananbaum | 2.7% | 653,328 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-01 | Gates Frontier, LLC | 5.6% | SCHEDULE 13G |
| 2025-08-19 | Explore Investments LLC | 5.4% | SCHEDULE 13G |
| 2025-11-12 | Newton (PTC) Limited | 3.93% | SCHEDULE 13G/A |
| 2025-11-13 | Innovative Cellular Therapeutics Holdings Ltd | 9.8% | SCHEDULE 13G |
| 2025-11-14 | ARCH Venture Fund IX, L.P. | 13% | SCHEDULE 13G/A |
| 2025-11-14 | James B. Tananbaum | 7.6% | SCHEDULE 13G/A |
| 2026-04-21 | Euler Fund, L.P. | 6.71% | SCHEDULE 13G |
| 2026-05-08 | Explore Investments LLC | 6.6% | SCHEDULE 13G/A |
| 2026-05-11 | MWG Caph Ltd | 4.3% | SCHEDULE 13G/A |
| 2026-05-15 | ARCH Venture Fund IX, L.P. | 13.9% | SCHEDULE 13G/A |
| 2026-06-18 | Innovative Cellular Therapeutics Holdings Limited | 12.3% | SCHEDULE 13G/A |
| 2026-08-14 | James B. Tananbaum | 2.7% | 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.