Insider filing · ATRA
James Huang
Director
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Atara Biotherapeutics, Inc.
ATRA · Healthcare · 6 filings in 24 months
ticker →
James Huang sold $3.2M of Atara Biotherapeutics (ATRA)
Executed May 7, disclosed May 11, 4 days later.
Value, as filed
$3.2M
313,446 sh × $10.10
Executed
May 7
the trade date, as filed
Disclosed
May 11
4 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
JHJames 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
ATRAHealthcare · 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.
$489K80,554 sh × $6.07
Exec Jan 12
Filed Jan 14 · 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