Sutro Biopharma, Inc. SEC filings STRO
Sutro Biopharma, Inc. has 624 filings in SEC EDGAR's recent list, going back to Nov 8, 2006. Its latest annual report, Form ARS, was filed on Apr 22, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 12, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 12, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Aug 12, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 12, 2026 | Aug 12, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2026 | Jun 5, 2026 |
| 10-Q | Quarterly report | May 14, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 14, 2026 | May 14, 2026 |
| ARS | Annual report to shareholders | Apr 22, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 22, 2026 | — |
| DEF 14A | Proxy statement | Apr 22, 2026 | Jun 5, 2026 |
| EFFECT | Filing | Apr 1, 2026 | — |
| 424B3 | Prospectus | Apr 1, 2026 | — |
| CORRESP | Letter to the SEC | Mar 30, 2026 | — |
| UPLOAD | Letter from the SEC | Mar 27, 2026 | — |
| S-3 | Shelf registration | Mar 23, 2026 | — |
| S-8 | Employee stock plan registration | Mar 23, 2026 | — |
| 10-K | Annual report | Mar 23, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Agreement ended, Results of operations
|
Mar 23, 2026 | Mar 23, 2026 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Feb 10, 2026 | Feb 9, 2026 |
| 424B5 | Prospectus supplement | Feb 10, 2026 | — |
| 8-K |
Current report
Other events
|
Dec 17, 2025 | Dec 17, 2025 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Dec 3, 2025 | Dec 1, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Exit or restructuring costs
|
Sep 29, 2025 | Sep 29, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Listing notice
|
Jun 25, 2025 | Jun 20, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2025 | Jun 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 2, 2025 | Jun 2, 2025 |
| S-8 | Employee stock plan registration | May 30, 2025 | — |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| ARS | Annual report to shareholders | Apr 25, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 25, 2025 | — |
| DEF 14A | Proxy statement | Apr 25, 2025 | Jun 6, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 14, 2025 | Jun 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 14, 2025 | Apr 10, 2025 |
| 10-K | Annual report | Mar 13, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Exit or restructuring costs, Officer or director change
|
Mar 13, 2025 | Mar 13, 2025 |
| S-8 | Employee stock plan registration | Feb 27, 2025 | — |
| 8-K |
Current report
Other events
|
Dec 10, 2024 | Dec 10, 2024 |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2024 | Nov 13, 2024 |
| 10-Q | Quarterly report | Aug 13, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2024 | Aug 13, 2024 |
| 8-K |
Current report
Officer or director change
|
Aug 12, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2024 | Jun 6, 2024 |
| DEFA14A | Additional proxy material | May 17, 2024 | — |
| 10-Q | Quarterly report | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 13, 2024 | May 13, 2024 |
| ARS | Annual report to shareholders | Apr 26, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 26, 2024 | Jun 6, 2024 |
| DEFA14A | Additional proxy material | Apr 26, 2024 | — |
| 8-K |
Current report
Material agreement
|
Apr 2, 2024 | Apr 2, 2024 |
| 424B5 | Prospectus supplement | Apr 2, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Apr 2, 2024 | Mar 29, 2024 |
| 10-K | Annual report | Mar 25, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 25, 2024 | Mar 25, 2024 |
| S-8 | Employee stock plan registration | Feb 27, 2024 | — |
| 8-K |
Current report
Other events
|
Feb 9, 2024 | Feb 9, 2024 |
| 424B5 | Prospectus supplement | Feb 9, 2024 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Jan 8, 2024 | Jan 4, 2024 |
| 8-K |
Current report
Material agreement
|
Nov 27, 2023 | Nov 21, 2023 |
| EFFECT | Filing | Nov 21, 2023 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 21, 2023 | Nov 21, 2023 |
| CORRESP | Letter to the SEC | Nov 17, 2023 | — |
| UPLOAD | Letter from the SEC | Nov 16, 2023 | — |
| S-3 | Shelf registration | Nov 13, 2023 | — |
| 10-Q | Quarterly report | Nov 13, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2023 | Nov 13, 2023 |
| 8-K |
Current report
Material agreement
|
Oct 4, 2023 | Sep 28, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Material agreement
|
Jun 26, 2023 | Jun 21, 2023 |
| 8-K |
Current report
Agreement ended, Shareholder vote results
|
Jun 14, 2023 | Jun 8, 2023 |
| 10-Q | Quarterly report | May 15, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 15, 2023 | May 15, 2023 |
| ARS | Annual report to shareholders | Apr 28, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | Jun 8, 2023 |
| 8-K |
Current report
Officer or director change
|
Apr 27, 2023 | Apr 24, 2023 |
| 8-K |
Current report
Officer or director change
|
Apr 14, 2023 | Apr 10, 2023 |
| PRE 14A | Preliminary proxy statement | Apr 14, 2023 | Jun 8, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 30, 2023 | Mar 30, 2023 |
| 10-K | Annual report | Mar 30, 2023 | Dec 31, 2022 |
| S-8 | Employee stock plan registration | Feb 27, 2023 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Feb 24, 2023 | Feb 24, 2023 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 9, 2023 | Jan 9, 2023 |
| 8-K |
Current report
Material agreement
|
Dec 20, 2022 | Dec 19, 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
Officer or director change
|
Oct 24, 2022 | Oct 18, 2022 |
| S-8 | Employee stock plan registration | Aug 31, 2022 | — |
| 10-Q | Quarterly report | Aug 8, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2022 | Aug 8, 2022 |
| 8-K |
Current report
Other events
|
Jul 26, 2022 | Jul 26, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Jun 28, 2022 | Jun 27, 2022 |
| 8-K |
Current report
Other events
|
Jun 16, 2022 | Jun 16, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 7, 2022 | Jun 6, 2022 |
| EFFECT | Filing | May 19, 2022 | — |
| POS EX | Filing | May 18, 2022 | — |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 9, 2022 | May 9, 2022 |
| DEFA14A | Additional proxy material | Apr 25, 2022 | — |
| DEF 14A | Proxy statement | Apr 25, 2022 | Jun 6, 2022 |
| 8-K |
Current report
Material agreement
|
Apr 20, 2022 | Apr 18, 2022 |
| S-8 | Employee stock plan registration | Mar 1, 2022 | — |
| POS AM | Filing | Mar 1, 2022 | — |
| 8-K |
Current report
Results of operations
|
Feb 28, 2022 | Feb 28, 2022 |
| 10-K | Annual report | Feb 28, 2022 | Dec 31, 2021 |
| POSASR | Filing | Feb 28, 2022 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 10, 2022 | Jan 7, 2022 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 5, 2022 | Jan 5, 2022 |
| 8-K |
Current report
Material agreement
|
Dec 27, 2021 | Dec 24, 2021 |
| 8-K |
Current report
Officer or director change
|
Nov 17, 2021 | Nov 12, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 10, 2021 | Nov 10, 2021 |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Material agreement
|
Oct 12, 2021 | Oct 9, 2021 |
| 8-K |
Current report
Other events
|
Sep 30, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2021 | Aug 9, 2021 |
| 10-Q | Quarterly report | Aug 9, 2021 | Jun 30, 2021 |
| S-8 | Employee stock plan registration | Aug 9, 2021 | — |
| 8-K |
Current report
Material agreement, New debt
|
Jun 17, 2021 | Jun 16, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 4, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
May 19, 2021 | May 19, 2021 |
| 8-K |
Current report
Results of operations
|
May 7, 2021 | May 7, 2021 |
| 10-Q | Quarterly report | May 7, 2021 | Mar 31, 2021 |
| DEF 14A | Proxy statement | Apr 29, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Other events
|
Apr 15, 2021 | Apr 14, 2021 |
| S-3ASR | Automatic shelf registration | Apr 2, 2021 | — |
| S-8 | Employee stock plan registration | Mar 18, 2021 | — |
| 8-K |
Current report
Results of operations
|
Mar 18, 2021 | Mar 18, 2021 |
| 10-K | Annual report | Mar 18, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Material agreement
|
Dec 9, 2020 | Dec 8, 2020 |
| 424B5 | Prospectus supplement | Dec 9, 2020 | — |
| S-3MEF | Filing | Dec 8, 2020 | — |
| 424B5 | Prospectus supplement | Dec 7, 2020 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 7, 2020 | Dec 7, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 4, 2020 | Dec 3, 2020 |
| 8-K |
Current report
Officer or director change
|
Dec 1, 2020 | Nov 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2020 | Nov 5, 2020 |
| 10-Q | Quarterly report | Nov 5, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Other events
|
Sep 9, 2020 | Sep 9, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 4, 2020 | Sep 3, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 6, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 15, 2020 | Jun 15, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2020 | Jun 5, 2020 |
| 8-K |
Current report
Material agreement
|
May 12, 2020 | May 11, 2020 |
| 424B5 | Prospectus supplement | May 12, 2020 | — |
| 8-K |
Current report
Results of operations
|
May 11, 2020 | May 11, 2020 |
| 424B5 | Prospectus supplement | May 11, 2020 | — |
| 10-Q | Quarterly report | May 11, 2020 | Mar 31, 2020 |
| 10-K/A | Amended annual report | May 4, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Apr 27, 2020 | Apr 27, 2020 |
| DEF 14A | Proxy statement | Apr 24, 2020 | Jun 5, 2020 |
| S-8 | Employee stock plan registration | Mar 16, 2020 | — |
| 8-K |
Current report
Results of operations
|
Mar 16, 2020 | Mar 16, 2020 |
| 10-K | Annual report | Mar 16, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Mar 3, 2020 | Feb 28, 2020 |
| 8-K |
Current report
Officer or director change
|
Jan 8, 2020 | Jan 7, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2019 | Nov 7, 2019 |
| 10-Q | Quarterly report | Nov 8, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 30, 2019 | Oct 29, 2019 |
| EFFECT | Filing | Oct 11, 2019 | — |
| 424B5 | Prospectus supplement | Oct 11, 2019 | — |
| CORRESP | Letter to the SEC | Oct 9, 2019 | — |
| UPLOAD | Letter from the SEC | Oct 8, 2019 | — |
| S-3 | Shelf registration | Oct 4, 2019 | — |
| 8-K |
Current report
Results of operations
|
Aug 14, 2019 | Aug 14, 2019 |
| 10-Q | Quarterly report | Aug 14, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Officer or director change
|
Jun 24, 2019 | Jun 18, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 17, 2019 | Jun 15, 2019 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 10, 2019 | Jun 7, 2019 |
| 8-K |
Current report
Results of operations
|
May 15, 2019 | May 15, 2019 |
| 10-Q | Quarterly report | May 15, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Other events
|
May 7, 2019 | May 7, 2019 |
| DEFA14A | Additional proxy material | Apr 26, 2019 | — |
| DEF 14A | Proxy statement | Apr 26, 2019 | Jun 7, 2019 |
| 8-K |
Current report
Results of operations
|
Apr 1, 2019 | Apr 1, 2019 |
| S-8 | Employee stock plan registration | Apr 1, 2019 | — |
| 10-K | Annual report | Apr 1, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 15, 2018 | Nov 14, 2018 |
| 10-Q | Quarterly report | Nov 14, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Officer or director change
|
Nov 8, 2018 | Nov 8, 2018 |
| 424B4 | Prospectus | Sep 27, 2018 | — |
| CT ORDER | Filing | Sep 27, 2018 | — |
| S-8 | Employee stock plan registration | Sep 27, 2018 | — |
| EFFECT | Filing | Sep 26, 2018 | — |
| S-1MEF | Filing | Sep 26, 2018 | — |
| CORRESP | Letter to the SEC | Sep 24, 2018 | — |
| CORRESP | Letter to the SEC | Sep 24, 2018 | — |
| CERT | Filing | Sep 21, 2018 | — |
| 8-A12B | Filing | Sep 18, 2018 | — |
| CORRESP | Letter to the SEC | Sep 17, 2018 | — |
| S-1/A | Amended registration statement | Sep 17, 2018 | — |
| UPLOAD | Letter from the SEC | Sep 11, 2018 | — |
| CORRESP | Letter to the SEC | Sep 10, 2018 | — |
| CORRESP | Letter to the SEC | Aug 29, 2018 | — |
| S-1 | Registration statement | Aug 29, 2018 | — |
| UPLOAD | Letter from the SEC | Aug 24, 2018 | — |
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
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- STRO (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- South San Francisco, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1382101
- Former names
- SUTRO BIOPHARMA INC (until Nov 8, 2018); Fundamental Applied Biology Inc (until Oct 24, 2007)
Other Biological Products, (No Diagnostic Substances) companies
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.