Atara Biotherapeutics Insider Trades

ATRA

Track insider trading activity from Atara Biotherapeutics executives and directors. See which insiders are buying and selling ATRA stock.

Trades Last 12 Months

ATRA Price

All Insider Trades for Atara Biotherapeutics

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Cherry Brian N Director
Holding Value $1.34M 166,486 shares
Last Trade
Sep 04, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$1M 104,166 shares
$9.60
$8.05
Nguyen Anh Co President And CEO
Holding Value $1.07M 132,775 shares
Last Trade
Aug 17, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$40.9k 5,062 shares
$8.08
$8.05
Holding Value $0 0 shares
Last Trade
Jul 22, 2026 Sale (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$454k 55,387 shares
$8.20
$8.05
Fust Matthew K Director
Holding Value $243k 30,188 shares
Last Trade
Jun 09, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$117k 12,000 shares
$9.77
$8.05
Heiden William K Director
Holding Value $275k 34,188 shares
Last Trade
Jun 09, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$117k 12,000 shares
$9.77
$8.05
Ciongoli Gregory Austin 10% owner, other, See Remarks
Holding Value $96.6k 12,000 shares
Last Trade
Jun 09, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$117k 12,000 shares
$9.77
$8.05
Nguyen Anh Co President And CEO
Holding Value $1.11M 137,837 shares
Last Trade
May 18, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$47.9k 5,241 shares
$9.13
$8.05
Grant Huerta Yanina Chief Accounting Officer
Holding Value $400k 49,636 shares
Last Trade
May 18, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$22k 2,414 shares
$9.13
$8.05
Holding Value $8.14M 1,011,000 shares
Last Trade
May 07, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$3.17M 313,446 shares
$10.10
$8.05
Grant Huerta Yanina Chief Accounting Officer
Holding Value $298k 37,012 shares
Last Trade
Aug 18, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$21k 1,809 shares
$11.61
$8.05
Nguyen Anhco President And CEO
Holding Value $570k 70,790 shares
Last Trade
Aug 18, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$34.4k 2,958 shares
$11.62
$8.05
Holding Value $266k 33,012 shares
Last Trade
Jun 10, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$71.4k 7,828 shares
$9.12
$8.05
Holding Value $140k 17,368 shares
Last Trade
Jun 10, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$71.4k 7,828 shares
$9.12
$8.05
Mallik Ameet Director
Holding Value $136k 16,928 shares
Last Trade
Jun 10, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$71.4k 7,828 shares
$9.12
$8.05
Touchon Pascal Director
Holding Value $628k 77,955 shares
Last Trade
Jun 10, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$71.4k 7,828 shares
$9.12
$8.05
Heiden William K Director
Holding Value $179k 22,188 shares
Last Trade
Jun 10, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$71.4k 7,828 shares
$9.12
$8.05
Adiumentum Capital Fund I Lp 10% owner, other, See Remarks
Holding Value $9.74M 1,209,395 shares
Last Trade
May 16, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$500k 75,572 shares
$6.61
$8.05
Holding Value $3.56M 441,701 shares
Last Trade
May 16, 2025 Sale
$61.4k 8,975 shares
$6.84
$8.05
Hyllengren Eric J other, Former Evp, CFO & COO
Holding Value $21.4k 2,656 shares
Last Trade
Mar 31, 2025 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$77k 12,961 shares
$5.94
$8.05
Henrich Jill Evp, Chief Regulatory Officer
Holding Value $150k 18,679 shares
Last Trade
Mar 03, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$7.41k 1,059 shares
$7.00
$8.05

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