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REPORTED · WARN NOTICE✓ VERIFIEDAdded Jul 27, 2026

Atara Biotherapeutics Layoff — March 2024

SOURCEOFFICIAL FILINGCalifornia Employment Development Department· filed January 8, 2024View the filing ↗

EMPLOYEES AFFECTED
44
SHARE OF WORKFORCE
~18%
EFFECTIVE DATE
Mar 8, 2024
44 OF 250 EMPLOYEES

What we know

Location: Rancho Conejo Blvd Thousand Oaks, CA · 2 locations (Ventura County).

A WARN notice for this layoff is recorded on January 8, 2024.

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 January 8, 2024. The notice covers 44 employees in Rancho Conejo Blvd Thousand Oaks, CA (Ventura County), with the layoff effective March 8, 2024.

The state lists each affected employee separately by work location, so this filing spans 2 CA communities: Rancho Conejo Blvd Thousand Oaks, Thousand Oaks.

That is roughly 17.6% 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 9, 2026