Robbert Rietbroek

CIK: 0002002890

Transaction Breakdown

Open Market Buys (P)2 (28.6%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (42.9%)

Compensation grants

Other (G, F, J, C, D, …)2 (28.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (3)

GPK

GRAPHIC PACKAGING HOLDING CO

DirectorOfficer

PRMB

Primo Brands Corp

DirectorOfficer

PRMW

Primo Water Corp /CN/

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

GPK
GRAPHIC PACKAGING HOLDING CO
Mar 4, 2026
Purchase(P)
Direct
44.3K shares at avg. $11.32$501K
GPK
GRAPHIC PACKAGING HOLDING CO
Feb 25, 2026
Award(A)
Service-Based Restricted Stock Units
Direct
165K shares-
GPK
GRAPHIC PACKAGING HOLDING CO
Jan 1, 2026
Award(A)
Service-Based Restricted Stock Units
Direct
265.6K shares-
PRMB
Primo Brands Corp
Aug 13, 2025
Purchase(P)
Direct
8.3K shares at avg. $24.12$200K
PRMB
Primo Brands Corp
Jan 1, 2025
Tax Payment(F)
Direct
50.1K shares at avg. $30.77$1.5M
PRMB
Primo Brands Corp
Dec 11, 2024
Award(A)
Direct
81.5K shares-
PRMW
Primo Water Corp /CN/
Nov 8, 2024
Disposition(D)
Direct
300.3K shares-

		Type	Shares	Price		Ownership
Mar 4, 2026	GPK GRAPHIC PACKAGING HOLDING CO	Purchase(P)	44,278	$11.32	$501,099	Direct
Feb 25, 2026	GPK GRAPHIC PACKAGING HOLDING CO	Award(A) Service-Based Restricted Stock Units	165,030	-	-	Direct
Jan 1, 2026	GPK GRAPHIC PACKAGING HOLDING CO	Award(A) Service-Based Restricted Stock Units	265,605	-	-	Direct
Aug 13, 2025	PRMB Primo Brands Corp	Purchase(P)	8,285	$24.12	$199,834	Direct
Jan 1, 2025	PRMB Primo Brands Corp	Tax Payment(F)	50,068	$30.77	$1,540,592	Direct
Dec 11, 2024	PRMB Primo Brands Corp	Award(A)	81,453	-	$0	Direct
Nov 8, 2024	PRMW Primo Water Corp /CN/	Disposition(D)	300,332	-	$0	Direct

1-7 of 7 transactions

About Rietbroek Robbert

Rietbroek Robbert (SEC CIK 0002002890) files insider reports with the SEC as President and CEO of GRAPHIC PACKAGING HOLDING CO (GPK), Chief Executive Officer of Primo Brands Corp (PRMB) and Chief Executive Officer of Primo Water Corp /CN/ (PRMW).

Signal8 holds 10 ownership filings by Rietbroek Robbert (3 Form 3, 7 Form 4), filed between Nov 12, 2024 and Mar 4, 2026. Those filings report 7 transactions, from Nov 8, 2024 to Mar 4, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Rietbroek Robbert's filings is in ATLANTA, GA.

Recent filings by Rietbroek Robbert

Mar 4, 2026: Open-market purchase of GPK shares (Form 4, code P).
Feb 25, 2026: Grant or award of GPK derivative securities (Form 4, code A).
Jan 1, 2026: Grant or award of GPK derivative securities (Form 4, code A).
Aug 13, 2025: Open-market purchase of PRMB shares (Form 4, code P).
Jan 1, 2025: Tax withholding of PRMB shares (Form 4, code F).

Other insiders filing for GRAPHIC PACKAGING HOLDING CO (GPK)

Gandhi Aditya, VP and CAO
Berardinelli Tatiana, EVP, Chief HR Officer
Spence Elizabeth, EVP, Human Resources
Fishbein Daniel S., EVP, Gen Counsel & Secretary
Venturelli Larry M, Director
BRLAS LAURIE, Director

How to read Form 4 transaction codes