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REPORTED · WARN NOTICE✓ VERIFIEDAdded Jul 27, 2026

Atara Biotherapeutics Layoff — December 2023

SOURCEOFFICIAL FILINGCalifornia Employment Development Department· filed November 1, 2023View the filing ↗

EMPLOYEES AFFECTED
1
SHARE OF WORKFORCE
~0.4%
EFFECTIVE DATE
Dec 31, 2023
1 OF 250 EMPLOYEES

What we know

Location: Thousand Oaks, CA (Ventura County).

A WARN notice for this layoff is recorded on November 1, 2023.

Disclosed through an official WARN filing with the CA state workforce agency.

Summary

Atara Biotherapeutics disclosed this layoff in an official WARN (Worker Adjustment and Retraining Notification) notice recorded by the CA state workforce agency on November 1, 2023. The notice covers 1 employees in Thousand Oaks, CA (Ventura County), with the layoff effective December 31, 2023.

That is roughly 0.4% of the 250 people Atara Biotherapeutics employs.

LayoffTalk has tracked 4 layoff events at Atara Biotherapeutics since October 2022, including 98 jobs documented in official WARN filings.

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SOURCE
Official WARN notice
View state filing ↗
A
Atara BiotherapeuticsATRA
Health Care · 250 employees
4
EVENTS TRACKED
98
JOBS IN WARN FILINGS
View company profile

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CREATED JUL 27, 2026LAST UPDATED AUG 10, 2026