Nektar Therapeutics SEC filings NKTR
Nektar Therapeutics has 1,000 filings in SEC EDGAR's recent list, going back to Aug 5, 2015. Its latest annual report, Form ARS, was filed on Apr 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 1, 2026 (regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Sep 28, 2026 | — |
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 144 | Notice of proposed sale | Aug 18, 2026 | — |
| 144 | Notice of proposed sale | Aug 18, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 31, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 29, 2026 | — |
| 4 | Insider transaction | Jul 24, 2026 | Jul 24, 2026 |
| 4 | Insider transaction | Jul 24, 2026 | Jul 24, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 144 | Notice of proposed sale | Jun 30, 2026 | — |
| 4 | Insider transaction | Jun 18, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 144 | Notice of proposed sale | Jun 17, 2026 | — |
| 144 | Notice of proposed sale | Jun 16, 2026 | — |
| 144 | Notice of proposed sale | Jun 15, 2026 | — |
| 3 | Initial insider ownership | May 26, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 6, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 144 | Notice of proposed sale | Mar 13, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 6, 2026 | — |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 30, 2026 | — |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 144 | Notice of proposed sale | Jan 20, 2026 | — |
| 4 | Insider transaction | Dec 23, 2025 | Dec 22, 2025 |
| 4 | Insider transaction | Dec 23, 2025 | Dec 22, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 31, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 28, 2025 | — |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Sep 11, 2025 | Sep 9, 2025 |
| 144 | Notice of proposed sale | Sep 9, 2025 | — |
| 4 | Insider transaction | Sep 8, 2025 | Sep 4, 2025 |
| 4 | Insider transaction | Sep 8, 2025 | Sep 4, 2025 |
| 144 | Notice of proposed sale | Sep 5, 2025 | — |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 144 | Notice of proposed sale | Sep 4, 2025 | — |
| 144 | Notice of proposed sale | Sep 4, 2025 | — |
| 144 | Notice of proposed sale | Sep 2, 2025 | — |
| 144 | Notice of proposed sale | Sep 2, 2025 | — |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 144 | Notice of proposed sale | Aug 19, 2025 | — |
| 144 | Notice of proposed sale | Aug 19, 2025 | — |
| 144 | Notice of proposed sale | Aug 19, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 18, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 9, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 3, 2025 | — |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 144 | Notice of proposed sale | May 19, 2025 | — |
| 144 | Notice of proposed sale | May 19, 2025 | — |
| 144 | Notice of proposed sale | May 19, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| 4 | Insider transaction | Feb 21, 2025 | Feb 19, 2025 |
| 4 | Insider transaction | Feb 21, 2025 | Feb 19, 2025 |
| 4 | Insider transaction | Feb 21, 2025 | Feb 19, 2025 |
| 144 | Notice of proposed sale | Feb 19, 2025 | — |
| 144 | Notice of proposed sale | Feb 19, 2025 | — |
| 144 | Notice of proposed sale | Feb 19, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 5 | Annual insider ownership | Jan 17, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Jan 17, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Jan 17, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Jan 17, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Jan 17, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Dec 26, 2024 | Dec 23, 2024 |
| 144 | Notice of proposed sale | Dec 26, 2024 | — |
| 144 | Notice of proposed sale | Dec 23, 2024 | — |
| 4 | Insider transaction | Dec 20, 2024 | Dec 19, 2024 |
| 4 | Insider transaction | Dec 19, 2024 | Dec 17, 2024 |
| 144 | Notice of proposed sale | Dec 19, 2024 | — |
| 144 | Notice of proposed sale | Dec 18, 2024 | — |
| 4 | Insider transaction | Dec 17, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 13, 2024 |
| 144 | Notice of proposed sale | Dec 17, 2024 | — |
| 4 | Insider transaction | Nov 20, 2024 | Nov 19, 2024 |
| 4 | Insider transaction | Nov 20, 2024 | Nov 19, 2024 |
| 4 | Insider transaction | Nov 20, 2024 | Nov 19, 2024 |
| 144 | Notice of proposed sale | Nov 19, 2024 | — |
| 144 | Notice of proposed sale | Nov 19, 2024 | — |
| 144 | Notice of proposed sale | Nov 19, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 144 | Notice of proposed sale | Aug 19, 2024 | — |
| 144 | Notice of proposed sale | Aug 19, 2024 | — |
| 144 | Notice of proposed sale | Aug 19, 2024 | — |
| 4 | Insider transaction | Jun 14, 2024 | Jun 14, 2024 |
| 144 | Notice of proposed sale | Jun 14, 2024 | — |
| 4 | Insider transaction | May 20, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 20, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 20, 2024 | May 17, 2024 |
| 144 | Notice of proposed sale | May 17, 2024 | — |
| 144 | Notice of proposed sale | May 17, 2024 | — |
| 144 | Notice of proposed sale | May 17, 2024 | — |
| 4 | Insider transaction | May 13, 2024 | May 10, 2024 |
| SC 13G | Ownership over 5% (passive) | Mar 15, 2024 | — |
| 3 | Initial insider ownership | Mar 14, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Feb 22, 2024 | Feb 20, 2024 |
| 4 | Insider transaction | Feb 22, 2024 | Feb 20, 2024 |
| 4 | Insider transaction | Feb 22, 2024 | Feb 20, 2024 |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 144 | Notice of proposed sale | Dec 15, 2023 | — |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 144 | Notice of proposed sale | Nov 17, 2023 | — |
| 144 | Notice of proposed sale | Nov 17, 2023 | — |
| 144 | Notice of proposed sale | Nov 17, 2023 | — |
| 4 | Insider transaction | Sep 21, 2023 | Sep 19, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 19, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 18, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 18, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 19, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 18, 2023 |
| 144 | Notice of proposed sale | Sep 18, 2023 | — |
| 4 | Insider transaction | Aug 17, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 16, 2023 |
| SC 13G | Ownership over 5% (passive) | Aug 17, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 7, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 7, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Jul 3, 2023 | — |
| 4 | Insider transaction | Jun 15, 2023 | Jun 14, 2023 |
| 144 | Notice of proposed sale | Jun 14, 2023 | — |
| 4 | Insider transaction | May 17, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 17, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 17, 2023 | May 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | May 5, 2023 | — |
| 3 | Initial insider ownership | Apr 25, 2023 | Apr 17, 2023 |
| SC 13G | Ownership over 5% (passive) | Apr 14, 2023 | — |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 2, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2023 | — |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Sep 26, 2022 | Sep 23, 2022 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- NKTR (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- San Francisco, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 906709
- Former names
- INHALE THERAPEUTIC SYSTEMS INC (until Jan 10, 2003); INHALE THERAPEUTIC SYSTEMS (until May 14, 1998)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.