40 employees in San Diego, CA are covered by the one WARN layoff or closure notice Avidity Biosciences, Inc. has on file as of November 4, 2026, dated October 29, 2026, effective December 31, 2026 (California WARN notice, October 29, 2026).
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Avidity Biosciences, Inc. filed 1 WARN notice in California, covering 40 employees in total. Each notice below links to the state file it was published in.
Did Avidity Biosciences, Inc. have layoffs in 2026? Every notice
| Notice | Where | Employees | Type | Effective | Industry | Days' notice | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-29 | San Diego, CA | 40 | layoff, permanent | 2026-12-31 | Professional Scientific and Technical Services | 63 | CA file |
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Other layoffs like this
Layoff notices in California filed under Professional Scientific and Technical Services, Q4 2026, most jobs first.
- Artiva Biotherapeutics, Inc. (131 jobs, Oct 2026)
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Fundraising on record
Avidity Biosciences, Inc. also appears in SEC Form D filings under the same name in the same state (1 filing on record). Its most recent raise before this notice reported $400.21M sold, filed 2024-03-19, 31 months before the notice.
Also on the record for Avidity Biosciences, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 15, 2026 | Stake report, Schedule 13G/A, by RA Capital Management, L.P. | — | 5%+ stakes | Source |
| February 17, 2026 | Stake report, Schedule 13G/A, by Avoro Capital Advisors LLC | 5.54% of the class | 5%+ stakes | Source |
| February 17, 2026 | Stake report, Schedule 13G/A, by JANUS HENDERSON GROUP PLC | 4.6% of the class | 5%+ stakes | Source |
| February 17, 2026 | Stake report, Schedule 13G/A, by T. Rowe Price Associates, Inc. | 0.1% of the class | 5%+ stakes | Source |
| February 10, 2026 | Stake report, Schedule 13G/A, by Wellington Management Group LLP | 0.5% of the class | 5%+ stakes | Source |
| December 5, 2025 | Stake report, Schedule 13G/A, by JANUS HENDERSON GROUP PLC | 5.5% of the class | 5%+ stakes | Source |
| November 14, 2025 | Stake report, Schedule 13G/A, by JANUS HENDERSON GROUP PLC | 10.7% of the class | 5%+ stakes | Source |
| November 14, 2025 | Stake report, Schedule 13G/A, by RA Capital Management, L.P. | 5.9% of the class | 5%+ stakes | Source |
| November 14, 2025 | Stake report, Schedule 13G/A, by T. Rowe Price Associates, Inc. | 7.1% of the class | 5%+ stakes | Source |
| November 7, 2025 | Stake report, Schedule 13G/A, by FMR LLC | 2.1% of the class | 5%+ stakes | Source |
| November 5, 2025 | Stake report, Schedule 13G/A, by FMR LLC | 15% of the class | 5%+ stakes | Source |
| October 30, 2025 | Stake report, Schedule 13G/A, by The Vanguard Group | 9.57% of the class | 5%+ stakes | Source |
The newest 12 of 15 records.
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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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- Peraton: 379 jobs, Oct 2026 layoff notice within 90 days (2026-10-16)
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Cite this page
https://mentionfox.com/layoffs/avidity-biosciences