Robbert Rietbroek
Pres, CEO
Graphic Packaging Holding Co
GPK·NYSE
MODERATE
57
The Alpha Score is an informational signal based on public SEC fillings. It is not investment advice.
CEOJOURNAL SIGNAL SUMMARY·GENERATED FROM PUBLIC SEC FILINGS
Robbert Rietbroek made an open-market purchase of Graphic Packaging Holding Co on 2026-03-04, investing approximately $501,099. This is a CEOJournal signal summary placeholder — full narrative pending Claude Haiku enrichment.
Summary based on Form 4 filings and DEF 14A proxy data. Not investment advice. Updated on new filing activity.
Score Components
COMPOSITE ALPHA SCORE
57
Score calculated from open-market purchases only; 10b5-1 preplanned trades excluded; not investment advice.
OPPORTUNISM
Proxy from ownership-change magnitude. Real Opportunism signal will use %52W proximity once price data is in pipeline.
CONVICTION
Log-scaled from trade size. Real Conviction signal will use trade $ ÷ total compensation once DEF 14A data is in pipeline.
PATTERN
Placeholder — 90-day qualifying buy count requires historical Form 4 scrapes (Phase 2).
CLUSTER
Count of other insiders buying the same ticker in our current dataset window.
TRACK RECORD
Placeholder — executive tenure × prior buy P&L requires historical price tracking (Phase 2).
FORM 4 TRANSACTION HISTORYSOURCE: SEC EDGAR
| DATE | TRANSACTION TYPE | CODE | SHARES | PRICE | TOTAL VALUE | 10b5-1 | SCORE |
|---|---|---|---|---|---|---|---|
| Mar 04, 2026 | Open-Market Purchase | P | 44,278 | $11.32 | $501,099 | N/A | 57 |
Data sourced from SEC EDGAR Form 4 filings, updated within 24 hours.
Only transaction code P (open-market purchase) qualifies for Alpha Score calculation.
Only transaction code P (open-market purchase) qualifies for Alpha Score calculation.
EXECUTIVE PROFILE
Robbert Rietbroek
Pres, CEO
Robbert E. Rietbroek is the President and Chief Executive Officer of Graphic Packaging Holding Company. He was appointed to the Board of Directors on January 1, 2026. Prior to joining the Company, Mr. Rietbroek was the Chief Executive Officer of Primo Brands from November 2024 to November 2025. He also served as Chief Executive Officer of Primo Water Corporation and held senior leadership roles at Quaker Foods North America and PepsiCo Australia and New Zealand.
EDUCATION
Pending DEF 14A enrichment.
BOARD SEATS
Pending DEF 14A enrichment.
COMPENSATION & OWNERSHIP ·SOURCE: DEF 14A PROXY
ANNUAL BASE SALARY
—
TOTAL COMPENSATION
—
SHARES HELD
44,278
EST. HOLDINGS VALUE
$498.6K
as of May 30, 2026 close
Summary based on Form 4 filings and DEF 14A proxy data. Not investment advice. Updated on new filing activity.
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