Senior insider sale
President and CEO at ATARA BIOTHERAPEUTICS, INC. — senior position signals high conviction
$90.2K
10.30K shares
What this filing means
NGUYEN ANHCO plans to sell 10.30K shares of ATARA BIOTHERAPEUTICS, INC. valued at approximately $90.2K. 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: 8/26/2026ACC: 0000905148-26-003961
DirectorOfficer· President and CEO
Since Mar 2026
10.30K
Shares to sell
$90.2K
Approx. market value
13.89K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
Settlement of vested RSUs issued under an S-8 Registration Plan
Equity compensation for services rendered
8/15/2026
13.89KTotal acquired13.89K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
8/15/2026 | Settlement of vested RSUs issued under an S-8 Registration Plan Equity compensation for services rendered | 13.89K | — |
| Total | 13.89K | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
5.24K
Market value
$47.9K
5/18/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
5.06K
Market value
$42.3K
8/17/2026
Total
Units
10.30K
Value
$90.2K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
5/18/2026 | 5.24K | $47.9K | — | Completed |
| Planned — Approximate Date | ||||
8/17/2026 | 5.06K | $42.3K | NASDAQ | Planned |
| Total | 10.30K | $90.2K | ||