Atara Biotherapeutics, Inc. - ATRA

Insiders (Form 4) · last 180 days · showing up to 200 transactions · Form 144 is shown in the SEC filings tab · Updating…
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Transaction codes: P = Open-market purchase · S = Open-market sale · A = Grant/award · M = Exercise/conversion of derivative · G = Gift · F = Tax withholding · J = Other · A/D: A = Acquired (buy/receive) · D = Disposed (sell/give)
Filed Owner Title Code A/D Shares Price Value Shares after SEC
Sep 04, 2026 — P A 104,166.0 9.6 999,993.6 166,486.0 View
Aug 26, 2026 President and CEO S D 5,062.0 8.0764 40,882.74 132,775.0 View
Jul 24, 2026 — M D 55,387.0 0.0 0.0 0.0 View
Jul 24, 2026 — M D 38,735.0 0.0 0.0 0.0 View
Jul 24, 2026 — M D 101,089.0 0.0 0.0 0.0 View
Jul 24, 2026 — F D 60.0 — — 636,852.0 View
Jul 24, 2026 — M A 195,211.0 — — 636,912.0 View
Jun 15, 2026 — A A 24,000.0 0.0 0.0 62,320.0 View
Jun 11, 2026 — A A 12,000.0 0.0 0.0 34,188.0 View
Jun 11, 2026 — A A 12,000.0 0.0 0.0 30,188.0 View
Jun 11, 2026 — A A 12,000.0 0.0 0.0 12,000.0 View
May 20, 2026 President and CEO S D 5,241.0 9.1289 47,844.56 137,837.0 View
May 20, 2026 Chief Accounting Officer S D 2,414.0 9.1286 22,036.44 49,636.0 View
May 11, 2026 — S D 313,446.0 10.0975 3,165,020.99 1,011,000.0 View
May 11, 2026 — P A 507,407.0 9.35 4,744,255.45 1,552,000.0 View