James Huang sold $489K of Atara Biotherapeutics (ATRA)

Executed Jan 12, disclosed Jan 14, 2 days later.

Value, as filed

$489K

80,554 sh × $6.07

Executed

Jan 12

the trade date, as filed

Disclosed

Jan 14

2 days after the trade

Return, 21 sessionsiFrom the disclosed entry session; derived

–

purchases only

Returns are measured on stock purchases only.

The filer

James Huang Director profile →

James Huang (Director) filed 4 Form 4 reports in the trailing twelve months (2 purchases, 2 sales), most often in Atara Biotherapeutics, Inc. (ATRA). Across 2 priced purchase filings, the average 21-session return was -4.9% from execution and -2.5% from disclosure (delay-adjusted; derived). The largest single filing was $4.0M of CNTB (1,160,000 sh × $3.45, as filed), executed Mar 31.

The name

ATRA

Atara Biotherapeutics, Inc. ATRA · Healthcare · 6 filings in 24 months ticker →

Healthcare · Atara Biotherapeutics, Inc. engages in the development of transformative therapies for patients with cancer and autoimmune disease in the U…

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→

Other filings by James Huang in ATRA

ATRASALE Atara Biotherapeutics, Inc. $3.2M
313,446 sh × $10.10
Exec May 7
Filed May 11 · 5:30 PM ET ATRAPURCHASE Atara Biotherapeutics, Inc. $670K
55,000 sh × $12.19
Exec Aug 15 2025
Filed Aug 19 2025 · 8:15 PM ET ATRAPURCHASE Atara Biotherapeutics, Inc. $186K
19,335 sh × $9.64
Exec Jul 17 2025
Filed Jul 21 2025 · 9:00 AM ET