ECOR1 CAPITAL, LLC enters ATARA BIOTHERAPEUTICS, INC. with 1.04M shares across direct and indirect positions
This filing by ECOR1 CAPITAL, LLC establishes the baseline for all future Form 4 insider transaction reports at ATARA BIOTHERAPEUTICS, INC..
Indirect
Filed: 5/11/2026ACC: 0000935836-26-000238
10% Owner
Since May 2026
1.04M
Baseline shares
0.00
Direct ownership
0 positions
0.00
Derivative underlying
0 instruments
1
Security positions
1.04M indirect
Non-Derivative Holdings1
Common Stock
IndirectShares owned1.04M
Total
1.04M indirect1.04M
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 1.04M | Indirect |
| Total | 1.04M | 1.04M indirect |
Derivative Holdings0
No derivative holdings reported