What Atara Biotherapeutics, Inc.'s executives and directors are doing with their own shares, from SEC Form 3/4/5 filings — separating what the filings state (awards, withholding, disclosed plans) from what only the pattern of dates shows.
| 3 months | 12 months | |
|---|---|---|
| Open-market buys | 1 | 2 |
| Sells | 1 | 18 |
| Total trades | 2 | 32 |
| 3 months | 12 months | |
|---|---|---|
| Acquired | 104,166 | 1,276,084 |
| Disposed | 5,062 | 416,602 |
| Net activity | +99,104 | +859,482 |
View rich charts and dive into the patterns of specific insiders — who is accumulating, who is winding down, and which sale explanations the filings actually support.
| Insider | Relation | Date | Transaction | Shares | Price | Value | Shares held |
|---|---|---|---|---|---|---|---|
| Cherry Brian N | Director | Sep 04 | Open-market buy · P | +104,166 | $9.60 | +$1M | 166,486 |
| Nguyen AnhCo | President and CEO | Aug 17 | Sale for tax withholding · S | −5,062 | $8.08 | −$40.9K | 132,775 |
| Redmile Group, Llc | Director | Jul 22 | Withheld — tax / exercise cost · F | −60 | — | — | 636,852 |
| Redmile Group, Llc | Director | Jul 22 | Exercise / conversion · M | +195,211 | — | — | 636,912 |
| Cherry Brian N | Director | Jun 11 | Grant / award · A | +24,000 | — | — | 62,320 |
| Fust Matthew K | Director | Jun 09 | Grant / award · A | +12,000 | — | — | 30,188 |
| Ciongoli Gregory Austin | Director | Jun 09 | Grant / award · A | +12,000 | — | — | 12,000 |
| Heiden William K | Director | Jun 09 | Grant / award · A | +12,000 | — | — | 34,188 |
| Grant-Huerta Yanina | Chief Accounting Officer | May 18 | Open-market sale · S | −2,414 | $9.13 | −$22K | 49,636 |
| Nguyen AnhCo | President and CEO | May 18 | Open-market sale · S | −5,241 | $9.13 | −$47.8K | 137,837 |
| EcoR1 Capital, Llc | 10% owner | May 07 | Open-market buy · P | +507,407 | $9.35 | +$4.74M | 1,552,000 |
| Panacea Innovation Ltd | 10% owner | May 07 | Open-market sale · S | −313,446 | $10.10 | −$3.17M | 1,011,000 |
| Panacea Innovation Ltd | 10% owner | Mar 17 | Withheld — tax / exercise cost · F | −5 | $5.23 | −$26.2 | 307,894 |
| Panacea Innovation Ltd | 10% owner | Mar 17 | Exercise / conversion · M | +259,163 | $0.00 | +$25.9 | 307,899 |
| Grant-Huerta Yanina | Chief Accounting Officer | Mar 09 | Grant / award · A | +20,300 | — | — | 52,050 |
| Nguyen AnhCo | President and CEO | Mar 09 | Grant / award · A | +81,100 | — | — | 143,078 |
| Nguyen AnhCo | President and CEO | Mar 02 | Sale for tax withholding · S | −1,442 | $5.09 | −$7.34K | 61,978 |
| Nguyen AnhCo | President and CEO | Mar 02 | Sale for tax withholding · S | −1,298 | $5.09 | −$6.6K | 63,420 |
| Nguyen AnhCo | President and CEO | Mar 02 | Sale for tax withholding · S | −58 | $5.08 | −$295 | 64,718 |
| Nguyen AnhCo | President and CEO | Mar 02 | Sale for tax withholding · S | −198 | $5.08 | −$1.01K | 64,776 |
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