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Home/Companies/Geron Corporation

Geron Corporation

69 insider trades tracked

GERN
Insider trades
69
Bought (open market)
$206K
Sold (open market)
$5.8M
Acquired (grants)
$39K
Unique insiders
20

12-month activity

Monthly insider buy vs sell totals for Geron Corporation.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$01
November 2025$0$00
December 2025$0$01
January 2026$0$00
February 2026$0$19K4
March 2026$0$03
April 2026$0$01
May 2026$0$05
June 2026$0$01
July 2026$0$00
August 2026$0$00
September 2026$0$00

Recent insider trades

Most recent Form 4 filings for Geron Corporation.

  • Spiegel Robert J.granted6,103 shares ofGERNat $1.28$8KJun 30 · filed Jul 1Details
  • McDonald John Fgranted220,000 shares ofGERNat $0May 20 · filed May 26Details
  • O'Farrell Elizabeth G.granted220,000 shares ofGERNat $0May 20 · filed May 26

Insiders at this company

Executives and directors who have filed Form 4s.

  • Spiegel Robert J.11 trades
  • Feller Faye7 trades
  • SCARLETT JOHN A7 trades
  • ROBERTSON MICHELLE7 trades
  • Samuels Scott Alan5 trades
  • GRETHLEIN ANDREW J4 trades
  • Kapur Anil4 trades
  • Molineaux Susan3 trades

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
Details
  • Bir Dawn Cartergranted220,000 shares ofGERNat $0May 20 · filed May 26Details
  • Molineaux Susangranted220,000 shares ofGERNat $0May 20 · filed May 26Details
  • Spiegel Robert J.granted220,000 shares ofGERNat $0May 20 · filed May 26Details
  • Williams Timothygranted2,500,000 shares ofGERNat $0Apr 13 · filed Apr 14Details
  • Spiegel Robert J.granted5,243 shares ofGERNat $1.49$8KMar 31 · filed Apr 1Details
  • Chinoporos Constantinegranted270,000 shares ofGERNat $0Mar 25 · filed Mar 26Details
  • Andrews Patricia Sgranted270,000 shares ofGERNat $0Mar 25 · filed Mar 26Details
  • ROBERTSON MICHELLEsold9,855 shares ofGERNat $1.94$19KFeb 18 · filed Feb 19Details
  • ROBERTSON MICHELLEexercised27,500 shares ofGERNat $0Feb 18 · filed Feb 19Details
  • Eid Josephgranted2,220,000 shares ofGERNat $0Feb 17 · filed Feb 19Details
  • ROBERTSON MICHELLEgranted1,660,000 shares ofGERNat $0Feb 17 · filed Feb 19Details
  • Spiegel Robert J.granted5,918 shares ofGERNat $1.32$8KDec 31, 2025 · filed Jan 5Details
  • ElNawawi Ahmedgranted3,000,000 shares ofGERNat $0Oct 20, 2025Details
  • Spiegel Robert J.granted5,702 shares ofGERNat $1.37$8KSep 30, 2025 · filed Oct 1, 2025Details
  • Semerjian Haroutgranted4,000,000 shares ofGERNat $0Aug 7, 2025 · filed Aug 8, 2025Details
  • Semerjian Haroutgranted7,000,000 shares ofGERNat $0Aug 7, 2025 · filed Aug 8, 2025Details
  • Spiegel Robert J.granted5,540 shares ofGERNat $1.41$8KJun 30, 2025 · filed Jul 1, 2025Details
  • Samuels Scott Alanbought15,000 shares ofGERNat $1.61$24KFeb 27, 2025 · filed Mar 3, 2025Details
  • SCARLETT JOHN Abought12,500 shares ofGERNat $1.765$22KFeb 27, 2025 · filed Mar 3, 2025Details
  • Ziegler Jamesbought100,000 shares ofGERNat $1.6$160KFeb 27, 2025 · filed Mar 3, 2025Details
  • GRETHLEIN ANDREW Jgranted140,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • GRETHLEIN ANDREW Jgranted839,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • SCARLETT JOHN Agranted410,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • SCARLETT JOHN Agranted2,457,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • Samuels Scott Alangranted104,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • Samuels Scott Alangranted621,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • ROBERTSON MICHELLEgranted110,000 shares ofGERNat $0Feb 18, 2025 · filed Feb 20, 2025Details
  • View all trades for GERN →
    Ziegler James
    3 trades
  • LAWLIS V BRYAN3 trades
  • O'Farrell Elizabeth G.2 trades
  • Bir Dawn Carter2 trades
  • McDonald John F2 trades
  • Aggarwal Gaurav2 trades
  • Semerjian Harout2 trades
  • ElNawawi Ahmed1 trades
  • Eid Joseph1 trades
  • Andrews Patricia S1 trades
  • Chinoporos Constantine1 trades
  • Williams Timothy1 trades