Lyell Immunopharma, Inc. SEC filings LYEL
Lyell Immunopharma, Inc. has 359 filings in SEC EDGAR's recent list, going back to Mar 20, 2020. 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 Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2026 | Nov 4, 2026 |
| 8-K |
Current report
Unregistered share sale
|
Nov 4, 2026 | Nov 3, 2026 |
| 8-K |
Current report
Other events
|
Sep 10, 2026 | Sep 10, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| EFFECT | Filing | Jul 21, 2026 | — |
| CORRESP | Letter to the SEC | Jul 17, 2026 | — |
| UPLOAD | Letter from the SEC | Jul 16, 2026 | — |
| S-3 | Shelf registration | Jul 13, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2026 | Jun 10, 2026 |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| ARS | Annual report to shareholders | Apr 24, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 24, 2026 | — |
| DEF 14A | Proxy statement | Apr 24, 2026 | Jun 10, 2026 |
| EFFECT | Filing | Apr 14, 2026 | — |
| CORRESP | Letter to the SEC | Apr 13, 2026 | — |
| UPLOAD | Letter from the SEC | Apr 8, 2026 | — |
| S-3 | Shelf registration | Apr 3, 2026 | — |
| S-8 | Employee stock plan registration | Mar 12, 2026 | — |
| 10-K | Annual report | Mar 12, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2026 | Mar 12, 2026 |
| 8-K |
Current report
Officer or director change
|
Mar 9, 2026 | Mar 6, 2026 |
| 424B5 | Prospectus supplement | Dec 18, 2025 | — |
| EFFECT | Filing | Dec 15, 2025 | — |
| CORRESP | Letter to the SEC | Dec 11, 2025 | — |
| 8-K |
Current report
Other events
|
Dec 8, 2025 | Dec 7, 2025 |
| S-3 | Shelf registration | Dec 5, 2025 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Dec 5, 2025 | Dec 3, 2025 |
| 10-Q | Quarterly report | Nov 12, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2025 | Nov 12, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Nov 10, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 3, 2025 | Oct 31, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 16, 2025 | Sep 15, 2025 |
| EFFECT | Filing | Aug 15, 2025 | — |
| CORRESP | Letter to the SEC | Aug 13, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 13, 2025 | — |
| S-3 | Shelf registration | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Aug 12, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2025 | Aug 12, 2025 |
| 424B5 | Prospectus supplement | Jul 31, 2025 | — |
| EFFECT | Filing | Jul 30, 2025 | — |
| CORRESP | Letter to the SEC | Jul 28, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Jul 25, 2025 | Jul 24, 2025 |
| UPLOAD | Letter from the SEC | Jul 23, 2025 | — |
| S-3 | Shelf registration | Jul 18, 2025 | — |
| 8-K |
Current report
Unregistered share sale
|
Jun 26, 2025 | Jun 20, 2025 |
| 8-K |
Current report
Other events
|
Jun 17, 2025 | Jun 17, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 9, 2025 | Jun 9, 2025 |
| 8-K |
Current report
Change to shareholder rights
|
May 28, 2025 | May 27, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 21, 2025 | May 15, 2025 |
| 10-Q | Quarterly report | May 13, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 13, 2025 | May 13, 2025 |
| ARS | Annual report to shareholders | Apr 21, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 21, 2025 | May 15, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 10, 2025 | May 15, 2025 |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change, Regulation FD disclosure
|
Apr 1, 2025 | Mar 27, 2025 |
| S-8 | Employee stock plan registration | Mar 11, 2025 | — |
| 10-K | Annual report | Mar 11, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 11, 2025 | Mar 11, 2025 |
| 8-K |
Current report
Listing notice
|
Jan 24, 2025 | Jan 23, 2025 |
| 8-K/A | Amended current report | Jan 10, 2025 | Oct 31, 2024 |
| 8-K |
Current report
Other events
|
Dec 10, 2024 | Dec 9, 2024 |
| 424B5 | Prospectus supplement | Dec 9, 2024 | — |
| EFFECT | Filing | Dec 5, 2024 | — |
| CORRESP | Letter to the SEC | Dec 3, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 3, 2024 | — |
| S-3 | Shelf registration | Nov 29, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Nov 26, 2024 | Nov 22, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Officer or director change, Regulation FD disclosure
|
Oct 31, 2024 | Oct 31, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure, Other events
|
Oct 24, 2024 | Oct 24, 2024 |
| 10-Q | Quarterly report | Aug 7, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2024 | Aug 7, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 26, 2024 | Jun 26, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 14, 2024 | Jun 14, 2024 |
| 424B5 | Prospectus supplement | May 6, 2024 | — |
| 10-Q | Quarterly report | May 6, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 6, 2024 | May 6, 2024 |
| EFFECT | Filing | May 3, 2024 | — |
| CORRESP | Letter to the SEC | May 1, 2024 | — |
| ARS | Annual report to shareholders | Apr 22, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 22, 2024 | — |
| DEF 14A | Proxy statement | Apr 22, 2024 | Jun 14, 2023 |
| UPLOAD | Letter from the SEC | Mar 4, 2024 | — |
| S-3 | Shelf registration | Feb 29, 2024 | — |
| S-8 | Employee stock plan registration | Feb 29, 2024 | — |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2024 | Feb 28, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 20, 2023 | Nov 16, 2023 |
| 10-Q | Quarterly report | Nov 7, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2023 | Nov 7, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 11, 2023 | Sep 11, 2023 |
| 10-Q | Quarterly report | Aug 8, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2023 | Aug 8, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 21, 2023 | Jun 16, 2023 |
| 8-K |
Current report
Officer or director change
|
Jun 6, 2023 | Jun 1, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| ARS | Annual report to shareholders | Apr 28, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 27, 2023 | — |
| DEF 14A | Proxy statement | Apr 27, 2023 | — |
| S-8 | Employee stock plan registration | Feb 28, 2023 | — |
| 10-K | Annual report | Feb 28, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2023 | Feb 28, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 16, 2022 | Dec 14, 2022 |
| 10-Q | Quarterly report | Nov 8, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2022 | Nov 8, 2022 |
| 8-K |
Current report
Agreement ended
|
Oct 24, 2022 | Oct 24, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 6, 2022 | Oct 6, 2022 |
| S-3ASR | Automatic shelf registration | Aug 4, 2022 | — |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 13, 2022 | Jun 8, 2022 |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 10, 2022 | May 10, 2022 |
| DEF 14A | Proxy statement | Apr 28, 2022 | Jun 8, 2022 |
| S-8 | Employee stock plan registration | Mar 29, 2022 | — |
| 10-K | Annual report | Mar 29, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 29, 2022 | Mar 29, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 15, 2022 | Feb 11, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 17, 2021 | Dec 15, 2021 |
| 8-K |
Current report
Other events
|
Dec 3, 2021 | Dec 2, 2021 |
| 10-Q | Quarterly report | Nov 12, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2021 | Nov 12, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 28, 2021 | Oct 23, 2021 |
| 8-K/A |
Amended current report
Officer or director change
|
Oct 1, 2021 | Sep 29, 2021 |
| 8-K |
Current report
Officer or director change
|
Sep 30, 2021 | Sep 29, 2021 |
| 10-Q | Quarterly report | Aug 12, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2021 | Aug 12, 2021 |
| S-8 | Employee stock plan registration | Jun 21, 2021 | — |
| 424B4 | Prospectus | Jun 21, 2021 | — |
| EFFECT | Filing | Jun 16, 2021 | — |
| SEC STAFF LETTER | Filing | Jun 16, 2021 | — |
| CERT | Filing | Jun 16, 2021 | — |
| 8-A12B | Filing | Jun 14, 2021 | — |
| CORRESP | Letter to the SEC | Jun 14, 2021 | — |
| CORRESP | Letter to the SEC | Jun 14, 2021 | — |
| S-1/A | Amended registration statement | Jun 9, 2021 | — |
| CORRESP | Letter to the SEC | Jun 7, 2021 | — |
| UPLOAD | Letter from the SEC | Jun 4, 2021 | — |
| CORRESP | Letter to the SEC | Jun 1, 2021 | — |
| CORRESP | Letter to the SEC | May 28, 2021 | — |
| SEC STAFF LETTER | Filing | May 28, 2021 | — |
| UPLOAD | Letter from the SEC | May 25, 2021 | — |
| S-1 | Registration statement | May 25, 2021 | — |
| DRSLTR | Filing | May 12, 2021 | — |
| DRS/A | Filing | May 12, 2021 | — |
| UPLOAD | Letter from the SEC | May 7, 2021 | — |
| DRS | Filing | Apr 12, 2021 | — |
| D | Filing | Mar 20, 2020 | — |
Showing 153 filings. 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
- LYEL (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- South San Francisco, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1806952
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.