Insiders who reported open-market trades in the last 12 months at the companies Anhco Nguyen files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
EcoR1 Capital, LLC - $4.74M in ATRA purchases and sales in the last 12 months
Anhco Nguyen is a corporate insider, tracked as President and CEO, Director of Atara Biotherapeutics, Inc. (ATRA). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Anhco Nguyen submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Anhco Nguyen been buying or selling stock?
Recorded transactions: 0 open-market purchases and 12 open-market sales ($195K) across all tracked filings.
Anhco Nguyen is President and CEO, Director of Atara Biotherapeutics, Inc. (ATRA). 7 SEC Form 4 filings on record going back to 2024, most recently on 26 August 2026. Most recent open-market trade: sold $41K of ATRA on 26 August 2026. Lifetime open-market sales: $195K.
Recent transactions
13
The latest 13 SEC Form 4 transactions reported by Anhco Nguyen.
InsiderAlpha's records for Anhco Nguyen go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
