Anhco Nguyen sold $48K of ATRA stock

Anhco Nguyen, President and CEO of Atara Biotherapeutics, Inc. (ATRA), sold 5,241 shares of ATRA stock worth $48K, per an SEC Form 4 filed May 20, 2026.

It was an open-market sale.

The trade happened on May 18, 2026, 2 days before it was made public.

ATRA has moved -15.8% since the trade date, from $9.15 to $7.70 (Nov 13, 2026 close).