Senior insider sale
President and CEO at ATARA BIOTHERAPEUTICS, INC. — senior position signals high conviction
$77.9K
8.98K shares
What this filing means
NGUYEN ANHCO plans to sell 8.98K shares of ATARA BIOTHERAPEUTICS, INC. valued at approximately $77.9K. 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: 5/18/2026ACC: 0000905148-26-002507
DirectorOfficer· President and CEO
Since Mar 2026
8.98K
Shares to sell
$77.9K
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
5/15/2026
13.89KTotal acquired13.89K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
5/15/2026 | 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
3K
Market value
$15.2K
3/2/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
5.98K
Market value
$62.7K
5/18/2026
Total
Units
8.98K
Value
$77.9K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
3/2/2026 | 3K | $15.2K | — | Completed |
| Planned — Approximate Date | ||||
5/18/2026 | 5.98K | $62.7K | NASDAQ | Planned |
| Total | 8.98K | $77.9K | ||