RON MARTELL - 02 Jan 2026 Form 4 Insider Report for Jasper Therapeutics, Inc. (JSPR)

Role: President, CEO and Director, Director
Signature: By: /s/ Herb Cross, as Attorney-in-Fact
Issuer symbol: JSPR
Transactions as of: 02 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Jan 2026, 19:30:55 UTC
Previous filing: 24 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MARTELL RON	President, CEO and Director, Director	C/O JASPER THERAPEUTICS, INC., 2200 BRIDGE PKWY, SUITE 102, REDWOOD CITY	By: /s/ Herb Cross, as Attorney-in-Fact	05 Jan 2026	0001177079

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	JSPR	Stock Option (right to buy)	Award	$0	+234,000		$0.000000	234,000	02 Jan 2026	Voting Common Stock	234,000	$1.84	Direct	F1

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

Explanation of Responses:

Id	Content
F1	1/4th of the shares subject to the option shall vest on January 2, 2027, and 1/48th of the original number of shares subject to the option shall vest following each one-month period thereafter, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive.