Kathryn Penkus Corzo - Oct 31, 2025 Form 4 Insider Report for Marker Therapeutics, Inc. (MRKR)

Role
Director
Signature
/s/ Julio C. Esquivel as Attorney-In-Fact for Kathryn Penkus Corzo
Stock symbol
MRKR
Transactions as of
Oct 31, 2025
Transactions value $
$0
Form type
4
Date filed
11/4/2025, 05:09 PM
Previous filing
Nov 3, 2023
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Corzo Kathryn Penkus Director MARKER THERAPEUTICS, INC., 2450 HOLCOMBE BLVD, TMC PARTNERS OFFICE, HOUSTON /s/ Julio C. Esquivel as Attorney-In-Fact for Kathryn Penkus Corzo 2025-11-04 0001884123

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 MRKR Stock Option (Right to Buy) Award $0 +148K $0.00 148K Oct 31, 2025 Common Stock 148K $0.99 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents options granted under the Company's 2020 Omnibus Stock Ownership Plan. The shares vest equally over thirty six (36) monthly installments, subject to the Reporting Person's continued service as a director. The option exercise price is the closing price on the date of the grant, October 31, 2025.