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ATRA

WEAK

Atara Biotherapeutics, Inc.

CIK: 0001604464

Strong Sell (70% confidence)

Last activity: Mar 2, 2026

Financial Metrics

As of Dec 31, 2025 (10-K)

Revenue $120.77M

Net Income -$85.40M

Total Cash $158.36M

Insider Roster (3 total, 3 active)

Insider	Sells	Net Value	Holdings
Panacea Innovation Ltd OTHER	1	-$489K	1,324,446 shares $8.04M
Nguyen AnhCo President and CEO	4	-$15K	61,978 shares $315K
Grant-Huerta Yanina Chief Accounting Officer	4	-$11K	32,227 shares $164K

Recent Transactions

SELL Grant-Huerta Yanina (Chief Accounting Officer)

1,603 shares @ $5.08

$8K

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Nguyen AnhCo (President and CEO)

1,442 shares @ $5.09

$7K

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Nguyen AnhCo (President and CEO)

1,298 shares @ $5.09

$7K

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Grant-Huerta Yanina (Chief Accounting Officer)

377 shares @ $5.08

$2K

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Nguyen AnhCo (President and CEO)

198 shares @ $5.08

$1K

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Grant-Huerta Yanina (Chief Accounting Officer)

100 shares @ $5.08

$508

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Nguyen AnhCo (President and CEO)

58 shares @ $5.08

$295

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Grant-Huerta Yanina (Chief Accounting Officer)

24 shares @ $5.08

$122

Mar 2, 2026

Conviction: | View SEC Filing →

SELL Panacea Innovation Ltd (OTHER)

80,554 shares @ $6.07

$489K

Jan 12, 2026

Conviction: | View SEC Filing →

⚠️ Important Disclaimer

• This is AI-generated analysis for educational purposes only, not financial advice.

• Insider trading data is derived from SEC Form 4 filings and may contain errors.

• Always conduct your own research and consult qualified financial advisors before making investment decisions.