SEC Form 4 · Updated Daily

GERN

GERON CORPORATION Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

FinancialsOwnership

Current Reporting Owners

OwnerRoleShares OwnedAs OfLast Activity
Spiegel Robert J.Director205,8102026-06-30A
Ziegler JamesOfficer100,0002025-02-27P
Samuels Scott AlanOfficer26,6822025-02-27P
ROBERTSON MICHELLEDirector17,6452026-02-18S
LAWLIS V BRYANDirector13,3002025-05-09P
SCARLETT JOHN ADirector · Officer12,5002025-02-27P

Recent Filings

DateOwnerActivitySharesPriceOwned After
2026-06-30Spiegel Robert J.Grant / award6,103$1.28205,810
2026-05-20Bir Dawn CarterGrant / award (derivative)220,000$0.00220,000
2026-05-20McDonald John FGrant / award (derivative)220,000$0.00220,000
2026-05-20Molineaux SusanGrant / award (derivative)220,000$0.00220,000
2026-05-20O'Farrell Elizabeth G.Grant / award (derivative)220,000$0.00220,000
2026-05-20Spiegel Robert J.Grant / award (derivative)220,000$0.00220,000
2026-04-13Williams TimothyGrant / award (derivative)2,500,000$0.002,500,000
2026-03-31Spiegel Robert J.Grant / award5,243$1.49199,707
2026-03-25Andrews Patricia SGrant / award (derivative)270,000$0.00270,000
2026-03-25Chinoporos ConstantineGrant / award (derivative)270,000$0.00270,000
2026-02-18ROBERTSON MICHELLEOption exercise (derivative)27,500$0.0082,500
2026-02-18ROBERTSON MICHELLEOpen-market sale9,855$1.9417,645
2026-02-18ROBERTSON MICHELLEOption exercise27,500$0.0027,500
2026-02-17ROBERTSON MICHELLEGrant / award (derivative)1,660,000$0.001,660,000
2026-02-17Eid JosephGrant / award (derivative)2,220,000$0.002,220,000
2025-12-31Spiegel Robert J.Grant / award5,918$1.32194,464
2025-10-20ElNawawi AhmedGrant / award (derivative)3,000,000$0.003,000,000
2025-09-30Spiegel Robert J.Grant / award5,702$1.37188,546
2025-08-07Semerjian HaroutGrant / award (derivative)4,000,000$0.004,000,000
2025-08-07Semerjian HaroutGrant / award (derivative)7,000,000$0.007,000,000
2025-06-30Spiegel Robert J.Grant / award5,540$1.41182,844
2025-05-21Spiegel Robert J.Grant / award (derivative)180,000$0.00180,000
2025-05-21O'Farrell Elizabeth G.Grant / award (derivative)180,000$0.00180,000
2025-05-21Molineaux SusanGrant / award (derivative)180,000$0.00180,000
2025-05-21McDonald John FGrant / award (derivative)180,000$0.00180,000
2025-05-21LAWLIS V BRYANGrant / award (derivative)180,000$0.00180,000
2025-05-21Bir Dawn CarterGrant / award (derivative)180,000$0.00180,000
2025-05-21Aggarwal GauravGrant / award (derivative)180,000$0.00180,000
2025-05-09LAWLIS V BRYANOpen-market buy13,300$1.1813,300
2025-03-31Spiegel Robert J.Grant / award4,913$1.59177,304
2025-02-27Ziegler JamesOpen-market buy100,000$1.60100,000
2025-02-27SCARLETT JOHN AOpen-market buy12,500$1.7612,500
2025-02-27Samuels Scott AlanOpen-market buy15,000$1.6126,682
2025-02-18ROBERTSON MICHELLEGrant / award (derivative)110,000$0.00110,000
2025-02-18ROBERTSON MICHELLEGrant / award (derivative)656,000$0.00656,000
2025-02-18GRETHLEIN ANDREW JGrant / award (derivative)140,000$0.00140,000
2025-02-18GRETHLEIN ANDREW JGrant / award (derivative)839,000$0.00839,000
2025-02-18Ziegler JamesGrant / award (derivative)89,000$0.0089,000
2025-02-18Ziegler JamesGrant / award (derivative)529,000$0.00529,000
2025-02-18Samuels Scott AlanGrant / award (derivative)104,000$0.00104,000

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.