Summary
Updated Aug 31, 2026
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
13Every recent SEC Form 4 transaction Anhco Nguyen has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Anhco Nguyen go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
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 of ATRA open-market activity in the last 12 months
- Panacea Innovation Ltd - $3.65M of ATRA open-market activity in the last 12 months
- Yanina Grant-Huerta - $57K of ATRA open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Anhco Nguyen?
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.
Where can I see all of Anhco Nguyen's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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