Insider Transactions Reported by 25 Insiders of Atara Biotherapeutics, Inc.

Symbol
ATRA on Nasdaq
Location
Thousand Oaks, CA

Insiders trading volume in the past year

Atara Biotherapeutics, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Panacea Innovation Ltd 10%+ Owner $25,314,668 +$856,794 +3.5% 12 Jan 2026
Adiumentum Capital Fund I LP Director, Other*, 10%+ Owner $10,487,308 16 May 2025
Redmile Group, LLC Director $3,356,927 16 May 2025
AnhCo Nguyen President and CEO, Director $636,697 -$110,191 -15% 09 Mar 2026
Pascal Touchon Director $589,339 10 Jun 2025
Eric J. Hyllengren Former EVP, CFO & COO $393,448 31 Mar 2025
Carol Giltner Gallagher Director $249,570 10 Jun 2025
Yanina Grant-Huerta Chief Accounting Officer $231,622 -$70,489 -23% 09 Mar 2026
ERIC DOBMEIER Director $219,133 10 Nov 2023
Amar Murugan EVP, Chief Legal Officer $177,890 16 Aug 2024
WILLIAM K. HEIDEN Director $167,741 10 Jun 2025
Matthew K. Fust Director $137,501 10 Jun 2025
Maria Grazia Roncarolo Director $131,302 10 Jun 2025
Jill Henrich EVP, Chief Regulatory Officer $130,697 03 Mar 2025
AMEET MALLIK Director $127,975 10 Jun 2025
Jakob Dupont EVP, Head of R&D $113,119 02 Mar 2023
Charlene A. Banard EVP, Chief Technical Officer $107,368 16 May 2023
Utpal Koppikar Chief Financial Officer $70,789 02 Mar 2023
Kristin Yarema Chief Commercial Officer $66,680 01 Mar 2022
Manher Joshi EVP, Chief Medical Officer $66,629 16 Nov 2023
BETH C. SEIDENBERG Director $45,080 31 May 2023
Joe Newell Chief Operations Officer $43,995 16 Nov 2021
Roy D. Baynes Director $16,922 23 Jun 2022
Ronald C. Renaud JR Director $12,254 23 Jun 2022
Nachiappan Subramanian Director 16 May 2025

Recent Insider Transactions by Companies or Individuals for Atara Biotherapeutics, Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.