GERN Insider Trading

Geron Corp · full profile →Last filing Jun 30, 2026
Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$19K
1 insiders
Net Insider Flow
-$19K
open market, 180d
Reporting Insiders
1
1 P/S transactions
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Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jun 30, 2026Spiegel Robert J.DirectorGrant(A)6K$1.28$8K
May 20, 2026McDonald John FDirectorGrant(A)220K$0
May 20, 2026Molineaux SusanDirectorGrant(A)220K$0
May 20, 2026Spiegel Robert J.DirectorGrant(A)220K$0
May 20, 2026O'Farrell Elizabeth G.DirectorGrant(A)220K$0
May 20, 2026Bir Dawn CarterDirectorGrant(A)220K$0
Apr 13, 2026Williams TimothyEVP and Chief Legal OfficerGrant(A)2.5M$0
Mar 31, 2026Spiegel Robert J.DirectorGrant(A)5K$1.49$8K
Mar 25, 2026Andrews Patricia SDirectorGrant(A)270K$0
Mar 25, 2026Chinoporos ConstantineDirectorGrant(A)270K$0
Feb 18, 2026Robertson MichelleEVP, CHIEF FINANCIAL OFFICERSell(S)10K$1.94$19K
Feb 18, 2026Robertson MichelleEVP, CHIEF FINANCIAL OFFICEROption exercise(M)28K$0
Feb 18, 2026Robertson MichelleEVP, CHIEF FINANCIAL OFFICEROption exercise(M)28K$0
Feb 17, 2026Robertson MichelleEVP, CHIEF FINANCIAL OFFICERGrant(A)1.7M$0
Feb 17, 2026Eid JosephEVP, R&D; Chief Medical OfficeGrant(A)2.2M$0
Dec 31, 2025Spiegel Robert J.DirectorGrant(A)6K$1.32$8K
Oct 20, 2025ElNawawi AhmedEVP, Chief Commercial OfficerGrant(A)3.0M$0
Sep 30, 2025Spiegel Robert J.DirectorGrant(A)6K$1.37$8K
Aug 7, 2025Semerjian HaroutPresident and CEO, DirectorGrant(A)7.0M$0
Aug 7, 2025Semerjian HaroutPresident and CEO, DirectorGrant(A)4.0M$0
Jun 30, 2025Spiegel Robert J.DirectorGrant(A)6K$1.41$8K
May 21, 2025Spiegel Robert J.DirectorGrant(A)180K$0
May 21, 2025O'Farrell Elizabeth G.DirectorGrant(A)180K$0
May 21, 2025Molineaux SusanDirectorGrant(A)180K$0
May 21, 2025McDonald John FDirectorGrant(A)180K$0
May 21, 2025Lawlis V BryanDirectorGrant(A)180K$0
May 21, 2025Bir Dawn CarterInterim President and CEO, DirectorGrant(A)180K$0
May 21, 2025Aggarwal GauravDirectorGrant(A)180K$0
May 9, 2025Lawlis V BryanDirectorBuy(P)13K$1.18$16K
Mar 31, 2025Spiegel Robert J.DirectorGrant(A)5K$1.59$8K
Feb 27, 2025Ziegler JamesEVP, Chief Commercial OfficerBuy(P)100K$1.60$160K
Feb 27, 2025Scarlett John AChairman, President and CEO, DirectorBuy(P)13K$1.77$22K
Feb 27, 2025Samuels Scott AlanEVP, Chief Legal OfficerBuy(P)15K$1.61$24K
Feb 18, 2025Robertson MichelleEVP, Chief Financial OfficerGrant(A)110K$0
Feb 18, 2025Robertson MichelleEVP, Chief Financial OfficerGrant(A)656K$0
Feb 18, 2025Ziegler JamesEVP, Chief Commercial OfficerGrant(A)529K$0
Feb 18, 2025Ziegler JamesEVP, Chief Commercial OfficerGrant(A)89K$0
Feb 18, 2025Samuels Scott AlanEVP, Chief Legal OfficerGrant(A)104K$0
Feb 18, 2025Samuels Scott AlanEVP, Chief Legal OfficerGrant(A)621K$0
Feb 18, 2025Scarlett John AChairman, President and CEO, DirectorGrant(A)2.5M$0
Feb 18, 2025Scarlett John AChairman, President and CEO, DirectorGrant(A)410K$0
Feb 18, 2025Grethlein Andrew JEVP, Chief Operating OfficerGrant(A)140K$0
Feb 18, 2025Grethlein Andrew JEVP, Chief Operating OfficerGrant(A)839K$0
Dec 31, 2024Spiegel Robert J.DirectorGrant(A)2K$3.54$8K
Nov 11, 2024Eid JosephEVP, Research and DevelopmentGrant(A)2.5M$0
Sep 30, 2024Spiegel Robert J.DirectorGrant(A)2K$4.54$8K
Sep 9, 2024Ziegler JamesEVP, Chief Commercial OfficerGrant(A)1.6M$0
Jul 8, 2024Grethlein Andrew JEVP, Chief Operating OfficerSell(S)674K$4.56$3.1M
Jul 8, 2024Grethlein Andrew JEVP, Chief Operating OfficerOption exercise(M)674K$1.72$1.2M
Jul 8, 2024Grethlein Andrew JEVP, Chief Operating OfficerOption exercise(M)453K$0
Jul 8, 2024Grethlein Andrew JEVP, Chief Operating OfficerOption exercise(M)222K$0
Jun 28, 2024Spiegel Robert J.DirectorGrant(A)2K$4.24$8K
Jun 10, 2024Kapur AnilEVP, Corp Strategy & CCOOption exercise(M)422K$1.06$447K
Jun 10, 2024Kapur AnilEVP, Corp Strategy & CCOSell(S)422K$4.65$2.0M
Jun 10, 2024Kapur AnilEVP, Corp Strategy & CCOOption exercise(M)422K$0
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerOption exercise(M)155K$1.30$202K
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerSell(S)288K$4.63$1.3M
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerOption exercise(M)113K$1.06$119K
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerOption exercise(M)20K$1.06$21K
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerOption exercise(M)155K$0
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerOption exercise(M)113K$0
Jun 10, 2024Feller FayeEVP, Chief Medical OfficerOption exercise(M)20K$0
Jun 6, 2024Grethlein Andrew JEVP, Chief Operating OfficerGrant(A)453K$0
Jun 6, 2024Feller FayeEVP, Chief Medical OfficerGrant(A)50K$0
Jun 6, 2024Feller FayeEVP, Chief Medical OfficerGrant(A)200K$0
Jun 6, 2024Robertson MichelleEVP, Chief Financial OfficerGrant(A)250K$0
Jun 6, 2024Samuels Scott AlanEVP, Chief Legal OfficerGrant(A)250K$0
Jun 6, 2024Scarlett John AChairman, President and CEO, DirectorGrant(A)1.0M$0
Jun 6, 2024Kapur AnilEVP, Corp Strategy & CCOGrant(A)250K$0
Jun 4, 2024Scarlett John AChairman, President and CEO, DirectorSell(S)600K$4.00$2.4M
Jun 4, 2024Scarlett John AChairman, President and CEO, DirectorOption exercise(M)600K$2.54$1.5M
Jun 4, 2024Scarlett John AChairman, President and CEO, DirectorOption exercise(M)600K$0
May 15, 2024Lawlis V BryanDirectorSell(S)35K$3.75$131K
May 15, 2024Lawlis V BryanDirectorOption exercise(M)35K$1.94$68K
May 15, 2024Lawlis V BryanDirectorOption exercise(M)35K$0
May 9, 2024O'Farrell Elizabeth G.DirectorGrant(A)180K$0
May 9, 2024Lawlis V BryanDirectorGrant(A)180K$0
May 9, 2024Bir Dawn CarterDirectorGrant(A)180K$0
May 9, 2024McDonald John FDirectorGrant(A)180K$0
May 9, 2024Molineaux SusanDirectorGrant(A)180K$0
May 9, 2024Spiegel Robert J.DirectorGrant(A)180K$0
May 9, 2024Aggarwal GauravDirectorGrant(A)180K$0
Mar 29, 2024Spiegel Robert J.DirectorGrant(A)2K$3.30$8K
Feb 14, 2024Scarlett John ACHAIRMAN, PRESIDENT AND CEO, DirectorGrant(A)3.0M$0
Feb 14, 2024Grethlein Andrew JEVP, CHIEF OPERATING OFFICERGrant(A)1.2M$0
Feb 14, 2024Robertson MichelleEVP, CHIEF FINANCIAL OFFICERGrant(A)850K$0
Feb 14, 2024Samuels Scott AlanEVP & CHIEF LEGAL OFFICERGrant(A)850K$0
Feb 14, 2024Kapur AnilEVP, CORP STRATEGY & CCOGrant(A)750K$0
Feb 14, 2024Feller FayeEVP, CHIEF MEDICAL OFFICERGrant(A)750K$0
Dec 29, 2023Aggarwal GauravDirectorGrant(A)2K$0
Dec 29, 2023Molineaux SusanDirectorGrant(A)6K$0
Dec 29, 2023Spiegel Robert J.DirectorGrant(A)3K$0
Nov 26, 2023Aggarwal GauravDirectorGrant(A)200K$0
Sep 29, 2023Spiegel Robert J.DirectorGrant(A)3K$0
Sep 29, 2023Molineaux SusanDirectorGrant(A)6K$0
Sep 25, 2023Robertson MichelleEVP, Chief Financial OfficerGrant(A)1.4M$0
Aug 24, 2023O'Farrell Elizabeth G.DirectorBuy(P)7K$2.28$15K
Aug 24, 2023O'Farrell Elizabeth G.DirectorBuy(P)7K$2.28$15K
Aug 15, 2023Bloom Olivia KyusukEVP, Chief Financial OfficerGrant(A)250K$0
Aug 15, 2023Feller FayeEVP, Chief Medical OfficerGrant(A)20K$0

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-292026-07-11. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).