Geron (GERN) director Constantine Chinoporos files initial Form 3

Rhea-AI Filing Summary

Geron Corp director files initial ownership report with no trades

Geron Corp director Constantine Chinoporos has filed an initial ownership statement as a company insider. This Form 3 filing establishes his status as a director of Geron Corp but does not report any stock transactions or derivative positions.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Chinoporos Constantine

(Last) (First) (Middle)

C/O GERON CORPORATION

919 EAST HILLSDALE BOULEVARD, SUITE 250

(Street)

FOSTER CITY CALIFORNIA 94404

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/25/2026

3. Issuer Name and Ticker or Trading Symbol
GERON CORP [ GERN ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities benefically owned.

No securities are beneficially owned.

	/s/ Michelle Robertson, Attorney-in-Fact	03/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Geron (GERN) Form 3 for Constantine Chinoporos show?

The Form 3 for Geron (GERN) reports that Constantine Chinoporos is a director of the company. It is an initial insider ownership statement and does not disclose any stock transactions or derivative holdings in this filing.

Did Constantine Chinoporos buy or sell Geron (GERN) shares in this Form 3?

No, this Form 3 does not report any buy or sell transactions by Constantine Chinoporos. The transaction summary shows zero purchases, zero sales, and no derivative exercises or gifts in this filing.

What is the purpose of this Geron (GERN) Form 3 filing?

This Form 3 serves to identify Constantine Chinoporos as a director of Geron Corp and to establish his insider status. It is a required disclosure when someone becomes a reporting person, even if no trades are reported at that time.

Does the Geron (GERN) Form 3 disclose any derivative securities for the director?

No, the filing’s derivativeSummary is empty, and derivativeTransactionCount is zero. That indicates no options, warrants, or other derivative securities are reported for Constantine Chinoporos in this particular Form 3 submission.

What does the transaction summary in Geron (GERN) director Chinoporos’s Form 3 indicate?

The transaction summary shows no activity: buyCount, sellCount, acquireCount, disposeCount, and exerciseCount are all zero. NetBuySellDirection is listed as neutral, confirming the absence of reported trades in this filing.