Nektar Therapeutics has 21 Schedule 13D or 13G filings on record since 2025-07-03. 5 holders' latest filing reports 5% or more of common stock, $0.0001 par value. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Fmr LLC | 15% | 4,303,188 | SCHEDULE 13G/A, 2026-05-06 | 2026-03-31 |
| Two Seas Capital LP | 9.1% | 3,092,234 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| BlackRock, Inc. | 7.8% | 2,643,796 | SCHEDULE 13G, 2026-07-29 | 2026-06-30 |
| Bvf Partners L P | 7.1% | 2,391,075 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Vanguard Capital Management | 5.17% | 1,747,653 | SCHEDULE 13G, 2026-07-31 | 2026-06-30 |
| G1 Execution Services, LLC | 4% | 809,967 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Millennium Management LLC | 3% | 570,994 | SCHEDULE 13G/A, 2025-10-28 | 2025-09-30 |
| Nantahala Capital Management, LLC | 2.2% | 418,522 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| TCG Crossover GP II, LLC | 0% | 0 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-03 | Millennium Management LLC | 5.4% | SCHEDULE 13G |
| 2025-07-09 | Bvf Partners L P | 7.4% | SCHEDULE 13G |
| 2025-07-18 | BlackRock, Inc. | 1.6% | SCHEDULE 13G/A |
| 2025-08-14 | TCG Crossover GP II, LLC | 9.3% | SCHEDULE 13G/A |
| 2025-08-14 | Nantahala Capital Management, LLC | 5.72% | SCHEDULE 13G |
| 2025-10-28 | Millennium Management LLC | 3% | SCHEDULE 13G/A |
| 2025-10-31 | The Vanguard Group | 4.98% | SCHEDULE 13G/A |
| 2025-11-13 | Susquehanna Portfolio Strategies, LLC | 6.3% | SCHEDULE 13G |
| 2025-11-14 | Nantahala Capital Management, LLC | 2.2% | SCHEDULE 13G/A |
| 2025-11-14 | TCG Crossover GP II, LLC | 0% | SCHEDULE 13G/A |
| 2026-01-30 | The Vanguard Group | 5.04% | SCHEDULE 13G |
| 2026-02-13 | G1 Execution Services, LLC | 4% | SCHEDULE 13G/A |
| 2026-03-06 | Fmr LLC | 11.1% | SCHEDULE 13G |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-17 | Two Seas Capital LP | 6.8% | SCHEDULE 13G |
| 2026-05-06 | Fmr LLC | 15% | SCHEDULE 13G/A |
| 2026-05-15 | Bvf Partners L P | 9.8% | SCHEDULE 13G/A |
| 2026-07-29 | BlackRock, Inc. | 7.8% | SCHEDULE 13G |
| 2026-07-31 | Vanguard Capital Management | 5.17% | SCHEDULE 13G |
| 2026-08-14 | Bvf Partners L P | 7.1% | SCHEDULE 13G/A |
| 2026-08-14 | Two Seas Capital LP | 9.1% | 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.