Christian E. Elling - 05 Jun 2025 Form 4 Insider Report for IO Biotech, Inc. (IOBT)

Role: Director
Signature: /s/ Brian Burkavage, Attorney-in-Fact for Christian Elling
Issuer symbol: IOBT
Transactions as of: 05 Jun 2025
Net transactions value: $0
Form type: 4
Filing time: 06 Jun 2025, 16:25:55 UTC
Previous filing: 07 Jun 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Elling Christian E	Director	1209 ORANGE STREET, WILMINGTON	/s/ Brian Burkavage, Attorney-in-Fact for Christian Elling	06 Jun 2025	0001891306

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	IOBT	Stock Option (Right to Buy)	Award	$0	+35,144		$0.000000	35,144	05 Jun 2025	Common Stock	35,144	$1.50	Direct	F1

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

Explanation of Responses:

Id	Content
F1	These options vest on June 5, 2026, subject to the reporting person's continued service through the applicable vesting date, and subject to 100% acceleration upon a change of control.