Form4insider filings, from the source

Insider · CIK 0001977970

AnhCo Nguyen

Files at: ATRA. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $41k · 1net −$41k
$10k$10k$100k$100k$1M$1MbuyssalesAug 16Aug 16Aug 16Aug 17Aug 17Aug 17Aug 18

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 17, 2026 SForm 4 →Aug 26, 7:45 pm EDTAtara Biotherapeutics, Inc.ATRA5,062$8.08$40,883132,775−3.67% late

Reported trades — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.