As of November 6, 2026, Sutro Biopharma, Inc. has reported one exit or restructuring plan to the SEC on Form 8-K under Item 2.05, the latest filed on September 29, 2025. No WARN notice under its name is on file in the states covered here (Form 8-K, September 29, 2025).
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Sutro Biopharma, Inc. reported 1 exit or restructuring plan on Form 8-K under Item 2.05. Each fact below is the filing's own sentence, quoted and linked. No WARN notice under this company's name is on file in the states covered here.
Did Sutro Biopharma have layoffs in 2025? What its filings say
Sutro Biopharma, Inc. (CIK 1382101) reported 1 exit or restructuring plan to the SEC on Form 8-K under Item 2.05. The sentences below are quoted from the filings as written.
Form 8-K filed 2025-09-29
Expected charges
The total cash payments and costs related to the further prioritization of the ADC programs and reducing the workforce are estimated to be approximately $4.1million to $4.3 million, with a significant majority of these amounts expected to be paid in the fourth quarter of 2025.
Also on the record for Sutro Biopharma, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 14, 2026 | Stake report, Schedule 13G/A, by Perceptive Advisors LLC | 7.9% of the class | 5%+ stakes | Source |
| August 14, 2026 | Stake report, Schedule 13G/A, by Point72 Asset Management, L.P. | 1.4% of the class | 5%+ stakes | Source |
| July 30, 2026 | Stake report, Schedule 13G, by BlackRock, Inc. | 6.4% of the class | 5%+ stakes | Source |
| May 15, 2026 | Stake report, Schedule 13G, by Srinivas Akkaraju | 6.4% of the class | 5%+ stakes | Source |
| May 15, 2026 | Stake report, Schedule 13G/A, by Kynam Capital Management, LP | 5.27% of the class | 5%+ stakes | Source |
| May 14, 2026 | Stake report, Schedule 13G/A, by Affinity Asset Advisors, LLC | 6.5% of the class | 5%+ stakes | Source |
| May 1, 2026 | Stake report, Schedule 13G, by Point72 Asset Management, L.P. | 5.7% of the class | 5%+ stakes | Source |
| April 21, 2026 | Stake report, Schedule 13G, by Perceptive Advisors LLC | 5.4% of the class | 5%+ stakes | Source |
| April 21, 2026 | Stake report, Schedule 13G/A, by Millennium Management LLC | 1.3% of the class | 5%+ stakes | Source |
| February 18, 2026 | Stake report, Schedule 13G, by BVF PARTNERS L P/IL | 7.6% of the class | 5%+ stakes | Source |
| February 13, 2026 | Stake report, Schedule 13G/A, by SUVRETTA CAPITAL MANAGEMENT, LLC | — | 5%+ stakes | Source |
| February 13, 2026 | Stake report, Schedule 13G/A, by SUVRETTA CAPITAL MANAGEMENT, LLC | — | 5%+ stakes | Source |
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More on Sutro Biopharma, Inc. and the records around it.
Sutro Biopharma, Inc. elsewhere on the record
- 5%+ stake filings Nov 2026
- Who owns it
Companies that share a holder
- Kynam Capital Management, LP also filed stake reports on 8 other companies: Celldex Therapeutics, Inc. (Aug 2026), CytomX Therapeutics, Inc. (Aug 2026), Vera Therapeutics, Inc. (Aug 2026)
- Affinity Asset Advisors, LLC also filed stake reports on 13 other companies: Amanat Acquisition Corp. (Aug 2026), Avalo Therapeutics, Inc. (Aug 2026), Equillium Inc. (Aug 2026)
- Samsara BioCapital, L.P. also filed stake reports on 14 other companies: PMV Pharmaceuticals, Inc. (Sep 2026), Eloxx Pharmaceuticals, Inc. (Aug 2026), RANI THERAPEUTICS HOLDINGS, INC. (May 2026)
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Public companies must also report to the SEC, on Form 8-K under Item 2.05, when they commit to an exit or restructuring plan that will cost them material charges, which is how most large layoffs and closures by listed companies are disclosed. Those filings are national, so they cover companies in every state. Each sentence shown from one is quoted exactly and linked to the filing; where a filing does not state a figure, none is shown.
Where this comes from
Employers covered by the federal WARN Act, and by the stricter laws some states add, must give written notice before a mass layoff or a site closure. The state labor department publishes those notices. Every row here is one of them, taken from that state's own published file and linked to it, so each figure can be checked at the source.
A notice states the employer, the location, the number of employees affected, and when the layoff or closure takes effect. It does not state a reason, and neither does this page. Where a company also appears in SEC filings under the same name and in the same state, its recorded fundraising is shown alongside, as a matter of record rather than as an explanation. New Jersey and Pennsylvania list a notice under the month it was posted or received, not the day, so their notices show a month. Tennessee gives the county rather than the city.
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Who owns Sutro Biopharma, Inc.? Owners, funding and legal record
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