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

Reporting relationship: EVP, CHIEF FINANCIAL OFFICER
Issuer ticker: GERN
Reported as of: 17 Feb 2026
Net transaction value: -$19,119
SEC form: 4
Accepted by SEC: 19 Feb 2026, 18:10:05 UTC
Prior SEC filing: 27 May 2025
Next SEC filing: 26 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Michelle Robertson

Key filing fact

Michelle Robertson filed Form 4 for GERON CORP (GERN) on 19 Feb 2026.

Key facts

This page summarizes Michelle Robertson's Form 4 filing for GERON CORP (GERN).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 19 Feb 2026, 18:10.

Change

Previous filing in this sequence was filed on 27 May 2025.
Current net transaction value: -$19,119.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001755098 Primary reporting owner

ROBERTSON MICHELLE

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GERN transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +27,500
Change %
Price: $0.000000
Shares after: 27,500
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F1

GERN transaction

Common Stock

Sale

Transaction value: $19,119
Shares: -9,855
Change %: -36%
Price: $1.94
Shares after: 17,645
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GERN transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +1,660,000
Change %
Price: $0.000000
Shares after: 1,660,000
Date: 17 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,660,000
Exercise price: $1.80
Footnotes: F3

GERN transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -27,500
Change %: -25%
Price: $0.000000
Shares after: 82,500
Date: 18 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 27,500
Exercise price
Footnotes: F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Shares of common stock acquired upon the vesting of restricted stock units ("RSUs").

Footnote 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.

Footnote 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.

Footnote F4

Each RSU represents the contingent right to receive one share of the Issuer's common stock.

Footnote 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.