Geron director receives 220,000 stock options

Geron Corp director John F. McDonald received a grant of 220,000 stock options to buy Geron common stock.

Rhea-AI Filing Summary

Geron Corp director John F. McDonald received a grant of 220,000 stock options to buy Geron common stock. The options have an exercise price of $1.26 per share and expire on May 19, 2036, providing long-term equity-based compensation.

According to the terms, the option will vest and become exercisable for all 220,000 underlying shares on the earlier of the next annual meeting of stockholders or the first anniversary of the grant date, as long as McDonald continues to serve the company through that date. There were 220,000 derivative securities held after this grant, and the filing shows no open-market buying or selling.

Insider Trade Summary

Grant/Award: 220,000 shares

Grant/Award 1 txn

Insider McDonald John F

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	220,000	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 220,000 contracts (Direct)

Footnotes (1)

1. F1. This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

Key Figures

Option grant size: 220,000 options Exercise price: $1.26 per share Expiration date: May 19, 2036 +2 more

5 metrics

Option grant size 220,000 options Stock Option (right to buy) granted to director on May 20, 2026

Exercise price $1.26 per share Conversion or exercise price for the stock option grant

Expiration date May 19, 2036 Option expiration for the 220,000-share stock option grant

Underlying shares 220,000 shares Common stock underlying the granted options

Post-grant derivative holdings 220,000 options Total derivative securities held following the transaction

Key Terms

Stock Option (right to buy), exercise price, Common Stock, expiration date, +1 more

5 terms

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

exercise price financial

"conversion_or_exercise_price: 1.2600"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

Common Stock financial

"underlying_security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

expiration date financial

"expiration_date: 2036-05-19T00:00:00.000Z"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

vest and become exercisable financial

"This option will vest and become exercisable as to 100% of the shares"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Geron (GERN) director John F. McDonald report in this Form 4?

He reported receiving a grant of 220,000 stock options as equity compensation. These options give him the right to buy Geron common stock at a fixed price, aligning his interests with long-term shareholder value creation if the share price rises.

What are the key terms of John F. McDonald’s Geron (GERN) stock option grant?

The grant covers 220,000 stock options with an exercise price of $1.26 per share. The options expire on May 19, 2036, giving a long exercise window tied to his continued service with the company over time.

When do John F. McDonald’s Geron (GERN) options vest and become exercisable?

The options vest 100% on the earlier of the next annual stockholder meeting or the first anniversary of the grant date. Vesting requires his continuous service with Geron through that date, making the award contingent on ongoing board participation.

Did John F. McDonald buy or sell Geron (GERN) shares in the market?

No open-market purchases or sales were reported in this filing. The Form 4 discloses a compensation-related option grant, not a market transaction, so it does not reflect a discretionary buy or sell decision in Geron’s common stock.

How many Geron (GERN) derivative securities does John F. McDonald hold after this transaction?

Following the reported grant, he holds 220,000 derivative securities tied to Geron common stock. These represent the newly granted stock options, which may be exercisable after vesting if he continues serving the company as specified.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/26/2026 - 07:45 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McDonald John F

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$1.26	05/20/2026		A		220,000		(1)	05/19/2036	Common Stock	220,000	$0	220,000	D

Explanation of Responses:

1. This option will vest and become exercisable as to 100% of the shares of common stock subject to such option on the earlier of (i) the date of the next annual meeting of the Issuer's stockholders or (ii) the first anniversary of the date of grant of such option, subject to the Reporting Person's continuous service with the Issuer through such dates.

	/s/ Michelle Robertson, Attorney-in-Fact	05/26/2026
	** 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 4 (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 4: SEC 1474 (03-26)