Michelle Robertson - 17 Feb 2026 Form 4 Insider Report for GERON CORP (GERN)

Role: EVP, CHIEF FINANCIAL OFFICER
Signature: /s/ Michelle Robertson
Issuer symbol: GERN
Transactions as of: 17 Feb 2026
Net transactions value: -$19,119
Form type: 4
Filing time: 19 Feb 2026, 18:10:05 UTC
Previous filing: 27 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ROBERTSON MICHELLE	EVP, CHIEF FINANCIAL OFFICER	C/O GERON CORPORATION, 919 EAST HILLSDALE BOULEVARD, SUITE 250, FOSTER CITY	/s/ Michelle Robertson	19 Feb 2026	0001755098

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GERN	Common Stock	Options Exercise	$0	+27,500		$0.000000	27,500	18 Feb 2026	Direct	F1
transaction	GERN	Common Stock	Sale	$19,119	-9,855	-36%	$1.94	17,645	18 Feb 2026	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GERN	Stock Option (Right to Buy)	Award	$0	+1,660,000		$0.000000	1,660,000	17 Feb 2026	Common Stock	1,660,000	$1.80	Direct	F3
transaction	GERN	Restricted Stock Units	Options Exercise	$0	-27,500	-25%	$0.000000	82,500	18 Feb 2026	Common Stock	27,500		Direct	F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares of common stock acquired upon the vesting of restricted stock units ("RSUs").
F2	Represents shares of common stock sold to cover tax withholding and remittance obligations in connection with the vesting of RSUs pursuant to mandatory "sell to cover" policies maintained by the Issuer and provisions contained in the Reporting Person's applicable RSU agreement, and does not represent a discretionary sale by the Reporting Person.
F3	The option vests in 48 equal monthly installments commencing on March 17, 2026, provided that the Reporting Person provides continuous service to the Issuer on each such vesting date.
F4	Each RSU represents the contingent right to receive one share of the Issuer's common stock.
F5	The RSUs were granted on February 18, 2025 and vest in four consecutive equal annual installments from the date of grant, provided the Reporting Person continues to provide services to the Issuer through the applicable vesting date.