sec filings

Insider trades

Open-market buys and sales that company insiders report to the SEC on .

Side

Planned sales

Role

ATRA

Updated 10/6/2026, 2:28 PM ET.

Stock	Side	Value	Insider	Shares	Avg price	Filed	Tags	Filing
ATRA Atara Biotherapeutics, Inc.	Buy	$999,994	Cherry Brian N Director	104,166 sh	at $9.60	Filed Sep 4, 6:20 PM ET		Filing
ATRA Atara Biotherapeutics, Inc.	Sale	$40,883	Nguyen AnhCo President and CEO, Director	5,062 sh	at $8.08	Filed Aug 26, 7:45 PM ET		Filing