Robbert Rietbroek

CIK 2002890 · View on SEC EDGAR ↗

Insider

First SEC filing: Jan. 27, 2025 · Latest: Jan. 27, 2025

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

1 buys (P) 0 sells (S) Net: $501,227 + 4 non-open-market transactions below Avg return of open purchases vs now: -0.2% last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

4 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 4, 2026	GPK	P	44,278	$11.32	$501,227	44,278 Direct	—	Acquired	-0.2% (price as of 2026-08-19)
Feb. 25, 2026	GPK	A	165,030	—	—	165,030 Direct	—	Acquired	(price as of 2026-08-19)
Jan. 1, 2026	GPK	A	265,605	—	—	265,605 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 13, 2025	PRMB	P	8,285	$24.12	$199,834	586,349 Direct	+1.43%	Acquired	-0.9% (price as of 2026-08-19)
Jan. 1, 2025	PRMB	F	50,068	$30.77	$1,540,592	331,717 Direct	-13.11%	Disposed	-22.3% (price as of 2026-08-19)
Dec. 11, 2024	PRMB	A	81,453	—	—	381,785 Direct	+27.12%	Acquired	(price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Feb. 25, 2026	GPK	Service-Based Restricted Stock Units	Common Stock (165,030)	$0.00	—	165,030	Acquired
Jan. 1, 2026	GPK	Service-Based Restricted Stock Units	Common Stock (265,605)	$0.00	—	265,605	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Jan. 27, 2025	PRMB	Class A Common Stock	546,679	Direct
Nov. 13, 2024	PRMB	Class A Common Stock	300,332	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

PRMB

CEO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$721,154	$882,500	—	—	$1,328,400	—	$245,043	$25,990,984

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.