CIK 0001604464 · Non-accelerated filer<br>Smaller reporting company
Atara Biotherapeutics, Inc.
Sign in to watch- Ticker
- ATRA
- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 460920988
- Phone
- 805-623-4211
- Business address
- 1280 RANCHO CONEJO BLVD, THOUSAND OAKS, CA, 91320
- Open-market buys, last 90 days
- $999,994
- in 1 filing
- Open-market sales, last 90 days
- $40,883
- in 1 filing
Net +$959,111. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-09-04 | Cherry Brian N Director | Purchase | +104,166 | $9.60 | $1000K | 166,486 |
| 2026-05-07 | EcoR1 Capital, LLC 10% owner | Purchase | +507,407 | $9.35 | $4.7M | 1,552,000 |
| 2025-08-15 | Panacea Innovation Ltd 10% owner | Purchase | +55,000 | $12.19 | $670K | 1,405,000 |
| 2025-07-17 | Panacea Innovation Ltd 10% owner | Purchase | +19,335 | $9.64 | $186K | 1,350,000 |
| 2023-11-14 | Gallagher Carol Giltner Director | Purchase | +90,980 | $0.31 | $28K | 459,418 |
| 2023-11-13 | Gallagher Carol Giltner Director | Purchase | +179,020 | $0.22 | $40K | 368,438 |
| 2023-11-10 | HEIDEN WILLIAM K Director | Purchase | +100,000 | $0.25 | $25K | 209,000 |
| 2023-11-10 | DOBMEIER ERIC Director | Purchase | +446,825 | $0.23 | $101K | 563,325 |
| 2021-06-14 | Yarema Kristin Chief Commercial Officer | Purchase | +3,500 | $14.48 | $51K | 97,049 |
| 2021-06-14 | Yarema Kristin Chief Commercial Officer | Purchase | +28,833 | $14.58 | $420K | 125,882 |
| 2021-06-11 | Yarema Kristin Chief Commercial Officer | Purchase | +2,021 | $14.50 | $29K | 93,549 |
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