Robbert Rietbroek - 25 Feb 2026 Form 4 Insider Report for GRAPHIC PACKAGING HOLDING CO (GPK)

Role: President and CEO, Director
Signature: /s/ Robbert Rietbroek, by Laura Lynn Church, Attorney-in-Fact
Issuer symbol: GPK
Transactions as of: 25 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 26 Feb 2026, 19:18:39 UTC
Previous filing: 05 Jan 2026
Next filing: 04 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Rietbroek Robbert	President and CEO, Director	1500 RIVEREDGE PARKWAY, ATLANTA	/s/ Robbert Rietbroek, by Laura Lynn Church, Attorney-in-Fact	26 Feb 2026	0002002890

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	GPK	Service-Based Restricted Stock Units	Award	$0	+165,030		$0.000000	165,030	25 Feb 2026	Common Stock	165,030	$0.000000	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The Service-Based Restricted Stock Units vest and become payable in three substantially equal tranches on the first, second and third anniversaries of the date of grant, except in the event of death, disability, retirement, involuntary termination or change in control.
F2	The Service-Based Restricted Stock Units expire upon their conversion and payment in shares of the Company's Common Stock as described under "Date Exerciseable."

Remarks:

The grant of Service-Based Restricted Stock Units is 1/3 of a total grant that includes Performance-Based Restricted Stock Units, which are reportable upon settlement.