Atara Biotherapeutics, Inc.
Biological Products, (No Diagnostic Substances) · THOUSAND OAKS · CA
Moderate confidence (50%)
Updated Oct 12, 2026, 12:05 AM
What is happening
Derived by rule set status-rules-2026.09.7
An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.
Latest material event: Atara Biotherapeutics, Inc. received a delisting notice from its exchange (Apr 30, 2026)
Timeline
Every material event, newest first. History is never overwritten.
Atara Biotherapeutics, Inc. received a delisting notice from its exchange
Apr 30, 2026
Delisting notice received
- SEC EDGAR — “Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On April 30, 2026, Atara Biotherapeutics, Inc. (the Company ) received a notice (the Notice ) from the Listing Qualifications Department (the Staff ) of The Nasdaq Stock Market LLC ( Nasdaq ) notifying the Company that the Company no longer meets Nasdaq s $50 million minimum market value for listed securities ( MVLS ) requirement pursuant to Nasdaq Listing Rule 5450(b)(2)(A) (the MVLS Requirement ) for continued listing on the Nasdaq Global Select Market based on Nasdaq s review of th…”
Company information
- Founded
- —
- Employees (estimate)
- —
- Industry
- Biological Products, (No Diagnostic Substances)
- Subindustry
- —
- Listing
- SEC lists the ticker ATRA on Nasdaq.
- SEC CIK
- 0001604464
- Website
- —
- —
- Headquarters
- THOUSAND OAKS, CA
- Also known as
- —
- Legal entities
- Atara Biotherapeutics, Inc.
Sources
Every material source used to build this profile.
SEC Company Submissions (TIER 1 · UNVERIFIED)
Atara Biotherapeutics, Inc. — Biological Products, (No Diagnostic Substances) (SIC 2836) — THOUSAND OAKS, CA
View source recordSEC EDGAR (TIER 1 · UNVERIFIED)
Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On April 30, 2026, Atara Biotherapeutics, Inc. (the Company ) received a notice (the Notice ) from the Listing Qualifications Department (the Staff ) of The Nasdaq Stock Market LLC ( Nasdaq ) notifying the Company that the Company no longer meets Nasdaq s $50 million minimum market value for listed securities ( MVLS ) requirement pursuant to Nasdaq Listing Rule 5450(b)(2)(A) (the MVLS Requirement ) for continued listing on the Nasdaq Global Select Market based on Nasdaq s review of th…
View source record
Status history
Every derived status, with the rule that produced it.
- DISTRESS_SIGNAL → DISTRESS_SIGNALLISTING_STANDARDS_WARNING · Sep 18, 2026, 01:29 AM
An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.
- DISTRESS_SIGNAL → DISTRESS_SIGNALLISTING_STANDARDS_WARNING · Sep 18, 2026, 01:12 AM
An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.
- DISTRESS_SIGNAL → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 15, 2026, 12:35 PM
An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.
- DISTRESS_SIGNAL → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 13, 2026, 12:04 AM
An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.
- UNKNOWN → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 8, 2026, 04:35 AM
An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.