GERN

Geron Corp

Company with tickers: GERN

Market Cap

$846.81M

Shares Outstanding

641,520,974

CIK

886744

CUSIP

374163103

13F Activity (30d)

2 filings 1 filers

Website

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Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Date	Insider	Role	Type	Shares	Price	Value	After
2026-05-20	Bir Dawn Carter	Director	Award	220,000	—	—	220,000
2026-05-20	O'Farrell Elizabeth G.	Director	Award	220,000	—	—	220,000
2026-05-20	Molineaux Susan	Director	Award	220,000	—	—	220,000
2026-05-20	McDonald John F	Director	Award	220,000	—	—	220,000
2026-05-20	Spiegel Robert J.	Director	Award	220,000	—	—	220,000
2026-04-13	Williams Timothy	SVP & General Counsel	Award	2,500,000	—	—	2,500,000
2026-04-13	Williams Timothy	SVP & General Counsel	Other	0	—	—	0
2026-03-31	Spiegel Robert J.	Director	Award	5,243	$1.49	$7,812	199,707
2026-03-25	Chinoporos Constantine	Director	Other	0	—	—	0
2026-03-25	Andrews Patricia S	Director	Award	270,000	—	—	270,000
2026-03-25	Chinoporos Constantine	Director	Award	270,000	—	—	270,000
2026-03-25	Andrews Patricia S	Director	Other	0	—	—	0
2026-02-18	ROBERTSON MICHELLE	Director	Convert	27,500	—	—	27,500
2026-02-18	ROBERTSON MICHELLE	Director	Sell	9,855	$1.94	$19,119	17,645
2026-02-18	ROBERTSON MICHELLE	Director	Convert	27,500	—	—	82,500
2026-02-17	ROBERTSON MICHELLE	Director	Award	1,660,000	—	—	1,660,000
2026-02-17	Eid Joseph	SVP,Head Glob. Medical Affairs	Award	2,220,000	—	—	2,220,000
2025-12-31	Spiegel Robert J.	Director	Award	5,918	$1.32	$7,812	194,464
2025-10-20	ElNawawi Ahmed	EVP, Chief Commercial Officer	Award	3,000,000	—	—	3,000,000
2025-09-30	Spiegel Robert J.	Director	Award	5,702	$1.37	$7,812	188,546
2025-08-07	Semerjian Harout	Director, Chief Executive Officer	Award	7,000,000	—	—	7,000,000
2025-08-07	Semerjian Harout	Director, Chief Executive Officer	Other	0	—	—	0
2025-08-07	Semerjian Harout	Director, Chief Executive Officer	Award	4,000,000	—	—	4,000,000
2025-06-30	Spiegel Robert J.	Director	Award	5,540	$1.41	$7,811	182,844
2025-05-21	McDonald John F	Director	Award	180,000	—	—	180,000
2025-05-21	Aggarwal Gaurav	Director	Award	180,000	—	—	180,000
2025-05-21	Bir Dawn Carter	Director	Award	180,000	—	—	180,000
2025-05-21	O'Farrell Elizabeth G.	Director	Award	180,000	—	—	180,000
2025-05-21	LAWLIS V BRYAN	Director	Award	180,000	—	—	180,000
2025-05-21	Spiegel Robert J.	Director	Award	180,000	—	—	180,000
2025-05-21	Molineaux Susan	Director	Award	180,000	—	—	180,000
2025-05-09	LAWLIS V BRYAN	Director	Buy	13,300	$1.18	$15,667	13,300
2025-03-31	Spiegel Robert J.	Director	Award	4,913	$1.59	$7,812	177,304
2025-02-27	Samuels Scott Alan	EVP, Chief Legal Officer	Buy	15,000	$1.61	$24,150	26,682
2025-02-27	Ziegler James	EVP, Chief Commercial Officer	Buy	100,000	$1.60	$160,000	100,000
2025-02-27	SCARLETT JOHN A	Director	Buy	12,500	$1.77	$22,063	12,500
2025-02-18	ROBERTSON MICHELLE	Director	Award	656,000	—	—	656,000
2025-02-18	Samuels Scott Alan	EVP, Chief Legal Officer	Award	104,000	—	—	104,000
2025-02-18	SCARLETT JOHN A	Director	Award	410,000	—	—	410,000
2025-02-18	GRETHLEIN ANDREW J	EVP, Chief Operating Officer	Award	839,000	—	—	839,000
2025-02-18	SCARLETT JOHN A	Director	Award	2,457,000	—	—	2,457,000
2025-02-18	GRETHLEIN ANDREW J	EVP, Chief Operating Officer	Award	140,000	—	—	140,000
2025-02-18	ROBERTSON MICHELLE	Director	Award	110,000	—	—	110,000
2025-02-18	Samuels Scott Alan	EVP, Chief Legal Officer	Award	621,000	—	—	621,000
2025-02-18	Ziegler James	EVP, Chief Commercial Officer	Award	89,000	—	—	89,000
2025-02-18	Ziegler James	EVP, Chief Commercial Officer	Award	529,000	—	—	529,000
2024-12-31	Spiegel Robert J.	Director	Award	2,206	—	—	172,391
2024-11-11	Eid Joseph	SVP,Head Glob. Medical Affairs	Award	2,500,000	—	—	2,500,000
2024-11-11	Eid Joseph	SVP,Head Glob. Medical Affairs	Other	0	—	—	0
2024-09-30	Spiegel Robert J.	Director	Award	1,767	—	—	170,185

Showing 1–50 of 215 transactions