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Company

Atara Biotherapeutics, Inc.

ATRA · CIK 0001604464

SEC FORM 4
$999,993.60

Atara Biotherapeutics, Inc. (ATRA)

Purchase of 104,166 shares at $9.60 per share.

Reporting Person Cherry Brian N · Transaction Code P

Traded Sep 4, 2026 · Disclosed Sep 4, 2026

Source: SEC Form 4 · 0000905148-26-004085 · filed 2026-09-04 · View filing →

SEC FORM 4
$40,882.74

Atara Biotherapeutics, Inc. (ATRA)

Sale of 5,062 shares at $8.0764 per share.

Reporting Person Nguyen AnhCo · Officer Title President and CEO · Transaction Code S

Traded Aug 17, 2026 · Disclosed Aug 26, 2026FILED +9 DAYS

Source: SEC Form 4 · 0000905148-26-003960 · filed 2026-08-26 · View filing →