Agenus Inc has 8 Schedule 13D or 13G filings on record since 2025-07-16. 4 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 |
|---|---|---|---|---|
| Raymond Debbane | 9.99% | 4,533,755 | SCHEDULE 13G, 2026-07-17 | 2026-07-13 |
| RA Capital Management, L.P. | 9.9% | 4,344,772 | SCHEDULE 13G, 2026-07-20 | 2026-07-13 |
| BlackRock, Inc. | 6% | 2,513,893 | SCHEDULE 13G, 2026-07-27 | 2026-06-30 |
| Zynext Ventures Usa LLC | 5.9% | 2,133,333 | SCHEDULE 13D, 2026-01-23 | 2026-01-15 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
Purpose of Transaction (Item 4)
Zynext Ventures Usa LLC
The acquisition of securities of the issuer is part of a strategic collaboration between Zydus and the issuer. At Zydus?s option, Zydus may appoint either a board observer or board member to issuer?s board of directors so long as Zydus retains significant ownership of issuer?s stock.Item 4 of the SCHEDULE 13D filed 2026-01-23
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-16 | BlackRock, Inc. | 1.8% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 9.23% | SCHEDULE 13G/A |
| 2025-10-30 | The Vanguard Group | 8.06% | SCHEDULE 13G/A |
| 2026-01-23 | Zynext Ventures Usa LLC | 5.9% | SCHEDULE 13D |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-07-17 | Raymond Debbane | 9.99% | SCHEDULE 13G |
| 2026-07-20 | RA Capital Management, L.P. | 9.9% | SCHEDULE 13G |
| 2026-07-27 | BlackRock, Inc. | 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.