---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-241776"
form_type: "8-K"
ticker: "ATRA"
cik: "0001604464"
company_name: "Atara Biotherapeutics, Inc."
filed_at: "2021-08-10T23:59:59+00:00"
generated_at: "2026-06-29T16:47:37.316238+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Atara Biotherapeutics appoints Ameet Mallik to Board of Directors

## Summary
- Ameet Mallik appointed to fill vacant Board seat effective August 9, 2021.
- Initial term expires at 2024 annual meeting; no standing committee assignments.
- Mr. Mallik determined independent under SEC and Nasdaq listing standards.
- Receives annual retainer of $45,000 (pro-rated) and option for 55,000 shares vesting over 3 years.
- Standard indemnification agreement entered into with the company.

## SEC filing metadata
- accession: 0001193125-21-241776
- form_type: 8-K
- ticker: ATRA
- cik: 0001604464
- company_name: Atara Biotherapeutics, Inc.
- filed_at: 2021-08-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1604464/000119312521241776/0001193125-21-241776-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1604464/000119312521241776/d213682d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-241776
- JSON: https://secwatch.observer/filing/0001193125-21-241776.json
- Plain text: https://secwatch.observer/filing/0001193125-21-241776.txt

## Key facts
- Executive change
  Ameet Mallik was appointed as Director at Atara Biotherapeutics, Inc..
  - Action: appointed
  - Role: Director
  source text: On August 9, 2021 (the “Effective Date”), the Board of Directors (the “Board”) of Atara Biotherapeutics, Inc. (the “Company”) appointed, upon the recommendation of the Nominating and Corporate Governance Committee of the Board, Ameet Mallik to fill the vacant Board seat and to serve as a member with an initial term expiring at the Company’s 2024 annual meeting of stockholders.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1604464/000119312521241776/0001193125-21-241776-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.