John A. Scarlett

Companies

• Geron CorporationChair Feb 1, 2019 to now¹
• Geron CorporationPresident Jan 25, 2012 to May 22, 2025²
• Geron CorporationChief executive officer Oct 3, 2011 to May 22, 2025³
• Chiasma (United States)Board member Jul 15, 2015 to Aug 5, 2021⁴
• CytomX Therapeutics, Inc.Board member Jun 13, 2016 to Jun 17, 2021⁵
• Geron CorporationBoard member Oct 3, 2011 to Feb 2, 2018³
• TercicaBoard member Mar 14, 2006 to Oct 20, 2008⁶
• TercicaChief executive officer Mar 14, 2006 to Oct 20, 2008⁶

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Geron Corporation GERN137,500 shares⁷$164.3K at $1.20Mar 3, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Feb 27, 2025Bought 12,500 shares at $1.77 of Geron Corporation⁷
• Jun 4, 2024Sold 600,000 shares at $4.00 of Geron Corporation⁸
• Jun 4, 2024Exercised options 600,000 shares at $2.54 of Geron Corporation⁸
• Feb 10, 2023Sold 446,668 shares at $3.00 of Geron Corporation⁹
• Feb 10, 2023Exercised options 446,668 shares at $1.50 of Geron Corporation⁹
• Feb 9, 2023Sold 446,666 shares at $3.03 of Geron Corporation⁹
• Feb 9, 2023Exercised options 446,666 shares at $1.50 of Geron Corporation⁹
• Feb 8, 2023Sold 446,666 shares at $3.08 of Geron Corporation⁹
• Feb 8, 2023Exercised options 446,666 shares at $1.50 of Geron Corporation⁹