EcoR1 Capital, LLC's Form 4 filing
Atara Biotherapeutics, Inc. (ATRA) · filed May 11, 2026
- Accession no.
- 0000935836-26-000239
- Filed
- May 11, 2026
- Trade date
- May 7, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Not checked
This filing lists 1 non-derivative transaction and 0 derivative transactions. Open-market purchases total $4.74M. It was filed 4 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| EcoR1 Capital, LLCCIK 0001587114 | 10% Owner |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| May 7, 2026 | Common Stock | PPurchaseAcquired | +507,407 | $9.35 | +$4,744,255.45 | 1,552,000 | Indirect |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.