Ticker | Value | Shares | Price | Security | Type | Insider | Title | Return | Flags | Date |
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Robert J. Spiegel currently holds 205,810 shares of GERON CORP (GERN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Robert J. Spiegel has been a net seller of GERN stock. They have purchased $33.0K and sold $1.3M worth of shares.
Robert J. Spiegel's most recent insider trade was on Jun 30, 2026, when they sold 6,103 shares at $1.28 per share.
Robert J. Spiegel serves as Executive at GERON CORP (GERN). They have executed 92 insider transactions totaling $1.3M over their tenure at the company.
Robert J. Spiegel holds the position of Executive at GERON CORP, where they are responsible for executive-level decision-making and strategic oversight. They have been associated with the company for 16 years and currently hold a stake valued at $0.
Robert J. Spiegel has shown a selling trading pattern, with $33.0K in total purchases and $1.3M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by Robert J. Spiegel was on Sep 13, 2018, when they sold $308.3K worth of GERN shares. This transaction involved 45,000 shares at $6.85 per share.
Robert J. Spiegel currently owns 205,810 shares of GERON CORP (GERN), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of Robert J. Spiegel's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. Robert J. Spiegel has 92 Form 4 filings on record as an insider at GERON CORP.
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