Insider sale
ATARA BIOTHERAPEUTICS, INC.
$3.17M
313.45K shares
What this filing means
PANACEA INNOVATION LTD plans to sell 313.45K shares of ATARA BIOTHERAPEUTICS, INC. valued at approximately $3.17M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 5/8/2026ACC: 0001193125-26-212781
10% Owner
Since Mar 2026
313.45K
Shares to sell
$3.17M
Approx. market value
1.41M
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months1
The Common Stock was purchased in multiple open market transactions from January 2025 through August 2025 as well as a registered direct financing in May 2025.
Cash
8/15/2025
1.41MTotal acquired1.41M
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
8/15/2025 | The Common Stock was purchased in multiple open market transactions from January 2025 through August 2025 as well as a registered direct financing in May 2025. Cash | 1.41M | — |
| Total | 1.41M | ||
Planned & Completed Dispositions1
NASDAQPlanned
Units to sell
313.45K
Market value
$3.17M
5/7/2026
Total
Units
313.45K
Value
$3.17M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
5/7/2026 | 313.45K | $3.17M | NASDAQ | Planned |
| Total | 313.45K | $3.17M | ||