GRAPHIC PACKAGING (GPK) CEO acquires 44,278 shares in open-market buy

Rhea-AI Filing Summary

GRAPHIC PACKAGING HOLDING CO President and CEO Robbert Rietbroek bought 44,278 shares of common stock in an open-market transaction. The purchase was made at an average price of $11.3171 per share, and following this trade he directly owns 44,278 common shares.

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

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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^*

Rietbroek Robbert

(Last) (First) (Middle)

1500 RIVEREDGE PARKWAY

(Street)

ATLANTA GA 30328

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GRAPHIC PACKAGING HOLDING CO [ GPK ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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

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

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

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
Common Stock	03/04/2026		P		44,278	A	$11.3171	44,278	D

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

Explanation of Responses:

	/s/ Robbert Rietbroek by Laura Lynn Church, Attorney-in-Fact	03/04/2026
	** 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).
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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.

FAQ

What insider transaction did GPK CEO Robbert Rietbroek report?

GPK President and CEO Robbert Rietbroek reported an open-market purchase of 44,278 common shares. The shares were bought in a single transaction coded “P,” indicating a standard purchase in the market or a private transaction under SEC rules.

How many GRAPHIC PACKAGING (GPK) shares did the CEO buy and at what price?

Robbert Rietbroek purchased 44,278 shares of GRAPHIC PACKAGING common stock at an average price of $11.3171 per share. This was recorded as a non-derivative transaction, meaning it involved direct stock rather than options or other derivative securities.

Does the GPK CEO now hold the purchased shares directly or indirectly?

The filing shows the CEO holds the 44,278 GRAPHIC PACKAGING shares directly. The ownership code is “D” for direct, and there is no footnote indicating that the shares are held through a trust, partnership, or other related entity.

What is the total number of GRAPHIC PACKAGING (GPK) shares owned by the CEO after this transaction?

After the reported purchase, Robbert Rietbroek owns a total of 44,278 GRAPHIC PACKAGING common shares. The Form 4 lists this as the number of shares beneficially owned following the transaction, reflecting only his direct ownership position.

What does transaction code “P” mean in the GPK Form 4 filing?

Transaction code “P” on the Form 4 indicates a purchase of stock in the open market or a private transaction. In this case, it confirms that the CEO’s 44,278-share acquisition was a straightforward buy of GRAPHIC PACKAGING common stock, not an option exercise.