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…
Visible: 0
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 |
|---|---|---|---|---|---|---|---|---|---|
| Mar 19, 2026 | — | M | D | 259,163.0 | 6.6099 | 1,713,041.51 | 0.0 | View | |
| Mar 19, 2026 | — | F | D | 5.0 | 5.23 | 26.15 | 307,894.0 | View | |
| Mar 19, 2026 | — | M | A | 259,163.0 | 0.0001 | 25.92 | 307,899.0 | View | |
| Mar 11, 2026 | Chief Accounting Officer | A | A | 20,300.0 | 0.0 | 0.0 | 52,050.0 | View | |
| Mar 11, 2026 | President and CEO | A | A | 81,100.0 | 0.0 | 0.0 | 143,078.0 | View | |
| Mar 04, 2026 | President and CEO | S | D | 1,442.0 | 5.087 | 7,335.45 | 61,978.0 | View | |
| Mar 04, 2026 | President and CEO | S | D | 1,298.0 | 5.086 | 6,601.63 | 63,420.0 | View | |
| Mar 04, 2026 | President and CEO | S | D | 58.0 | 5.08 | 294.64 | 64,718.0 | View | |
| Mar 04, 2026 | President and CEO | S | D | 198.0 | 5.079 | 1,005.64 | 64,776.0 | View | |
| Mar 04, 2026 | Chief Accounting Officer | S | D | 100.0 | 5.083 | 508.3 | 31,750.0 | View | |
| Mar 04, 2026 | Chief Accounting Officer | S | D | 377.0 | 5.082 | 1,915.91 | 31,850.0 | View | |
| Mar 04, 2026 | Chief Accounting Officer | S | D | 1,603.0 | 5.081 | 8,144.84 | 32,227.0 | View | |
| Mar 04, 2026 | Chief Accounting Officer | S | D | 24.0 | 5.077 | 121.85 | 33,830.0 | View | |
| Jan 14, 2026 | — | S | D | 80,554.0 | 6.0707 | 489,019.17 | 1,324,446.0 | View | |
| Dec 01, 2025 | — | M | D | 48,737.0 | 6.6099 | 322,146.7 | 259,163.0 | View | |
| Dec 01, 2025 | — | F | D | 1.0 | 14.03 | 14.03 | 48,736.0 | View | |
| Dec 01, 2025 | — | M | A | 48,737.0 | 0.0001 | 4.87 | 48,737.0 | View | |
| Nov 19, 2025 | President and CEO | S | D | 56.0 | 13.188 | 738.53 | 64,974.0 | View | |
| Nov 19, 2025 | President and CEO | S | D | 2,859.0 | 13.186 | 37,698.77 | 65,030.0 | View | |
| Nov 19, 2025 | Chief Accounting Officer | S | D | 74.0 | 13.191 | 976.13 | 33,454.0 | View | |
| Nov 19, 2025 | Chief Accounting Officer | S | D | 85.0 | 13.188 | 1,120.98 | 33,528.0 | View | |
| Nov 19, 2025 | Chief Accounting Officer | S | D | 1,645.0 | 13.186 | 21,690.97 | 33,613.0 | View |