Anhco Nguyen sold $41K of ATRA stock

Anhco Nguyen, President and CEO of Atara Biotherapeutics, Inc. (ATRA), sold 5,062 shares of ATRA stock worth $41K, per an SEC Form 4 filed Aug 26, 2026.

It was an open-market sale.

The trade happened on Aug 17, 2026, 9 days before it was made public.

ATRA has moved -7.9% since the trade date, from $8.36 to $7.70 (Nov 13, 2026 close).