Ticker | Value | Shares | Price | Security | Type | Insider | Title | Return | Flags | Date |
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| No transactions found | ||||||||||
Roy D. Baynes currently holds 44,964 shares of Atara Biotherapeutics, Inc. (ATRA), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Roy D. Baynes has been a net seller of ATRA stock. They have purchased $0 and sold $3.9M worth of shares.
Roy D. Baynes's most recent insider trade was on Aug 14, 2026, when they sold 44,964 shares at $0.00 per share.
Roy D. Baynes serves as Executive at Atara Biotherapeutics, Inc. (ATRA). They have executed 60 insider transactions totaling $3.9M over their tenure at the company.
Roy D. Baynes holds the position of Executive at Atara Biotherapeutics, Inc., where they are responsible for executive-level decision-making and strategic oversight. They have been associated with the company for 10 years and currently hold a stake valued at $0.
Roy D. Baynes has shown a selling trading pattern, with $0 in total purchases and $3.9M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by Roy D. Baynes was on Nov 19, 2025, when they sold $461.3K worth of NTRA shares. This transaction involved 2,135 shares at $216.07 per share.
Roy D. Baynes currently owns 44,964 shares of Atara Biotherapeutics, Inc. (ATRA), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of Roy D. Baynes's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. Roy D. Baynes has 60 Form 4 filings on record as an insider at Atara Biotherapeutics, Inc..
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