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

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Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Nguyen Anh Co President And CEO
Holding Value $1.33M 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
$9.63
Grant Huerta Yanina Chief Accounting Officer
Holding Value $478k 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
$9.63
Holding Value $9.74M 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
$9.63
Holding Value $14.9M 1,552,000 shares
Last Trade
May 07, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$4.74M 507,407 shares
$9.35
$9.63
Nguyen Anhco President And CEO
Holding Value $682k 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
$9.63
Grant Huerta Yanina Chief Accounting Officer
Holding Value $356k 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
$9.63
Holding Value $318k 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
$9.63
Holding Value $167k 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
$9.63
Touchon Pascal Director
Holding Value $751k 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
$9.63
Mallik Ameet Director
Holding Value $163k 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
$9.63
Heiden William K Director
Holding Value $214k 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
$9.63
Fust Matthew K Director
Holding Value $175k 18,188 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
$9.63
Holding Value $4.25M 441,701 shares
Last Trade
May 16, 2025 Sale
$61.4k 8,975 shares
$6.84
$9.63
Adiumentum Capital Fund I Lp 10% owner, other, See Remarks
Holding Value $11.6M 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
$9.63
Hyllengren Eric J other, Former Evp, CFO & COO
Holding Value $25.6k 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
$9.63
Henrich Jill Evp, Chief Regulatory Officer
Holding Value $180k 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
$9.63
Murugan Amar Evp, Chief Legal Officer
Holding Value $261k 27,108 shares
Last Trade
Aug 16, 2024 Sale (Open Market)Shares sold on the open market or in a private sale.
$7.68k 1,158 shares
$6.63
$9.63
Joshi Manher Evp, Chief Medical Officer
Holding Value $1.65M 171,284 shares
Last Trade
Nov 16, 2023 Sale (Open Market)Shares sold on the open market or in a private sale.
$148k 12,287 shares
$12.01
$9.63
Dobmeier Eric Director
Holding Value $5.42M 563,325 shares
Last Trade
Nov 10, 2023 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$2.57M 446,825 shares
$5.75
$9.63
Holding Value $1.11M 115,689 shares
Last Trade
May 31, 2023 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$3.04M 79,500 shares
$38.25
$9.63

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