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Graphic Packaging Holding stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−29.2% to $11.19
Graphic Packaging Holding (GPK) stock fell 29% over the last 252 sessions, to $11.19. On the way it reported 4 quarters, its insiders filed 4 open-market trades and 1 Form 144 notice of planned sales, and the company filed 9 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 3, 2026 | Earnings | Earnings: beat the EPS estimate by 5.6% | +19.2% (+18.9% vs SPY) | — | — |
| Sep 28, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.4% (−0.3% vs SPY) | −7.2% (−8.4% vs SPY) | −6.2% (−6.8% vs SPY) |
| Sep 3, 2026 | 8-K | New debt or off-balance-sheet obligation | −2.6% (−2.2% vs SPY) | −11.9% (−10.8% vs SPY) | −20.6% (−21.0% vs SPY) |
| Aug 6, 2026 | Form 144 | Form 144: Philip R Martens plans to sell $515K | −0.2% (−0.1% vs SPY) | −1.8% (−2.1% vs SPY) | −10.6% (−11.0% vs SPY) |
| Aug 4, 2026 | Earnings | Earnings: beat the EPS estimate by 14.8% | +4.6% (+2.9% vs SPY) | +4.8% (+2.8% vs SPY) | −4.5% (−5.0% vs SPY) |
| Jun 11, 2026 | 8-K | Directors and officers: departures, appointments, pay | +0.7% (+0.1% vs SPY) | +1.8% (+0.3% vs SPY) | −1.8% (−3.9% vs SPY) |
| May 26, 2026 | 8-K | New debt or off-balance-sheet obligation | +1.2% (+0.5% vs SPY) | +9.7% (+8.0% vs SPY) | +6.7% (+8.2% vs SPY) |
| May 8, 2026 | Insider buy | Hagemann Robert bought $154K | −3.7% (−4.5% vs SPY) | −7.7% (−10.0% vs SPY) | −4.7% (−5.8% vs SPY) |
| May 7, 2026 | Insider buy | Stafeil Jeffrey bought $200K | −1.5% (−1.2% vs SPY) | −13.3% (−14.5% vs SPY) | −6.1% (−6.6% vs SPY) |
| May 5, 2026 | Earnings | Earnings: beat the EPS estimate by 48.1% | +11.5% (+10.7% vs SPY) | +6.7% (+3.8% vs SPY) | +12.3% (+7.4% vs SPY) |
| Mar 11, 2026 | 8-K | Directors and officers: departures, appointments, pay | −4.4% (−2.9% vs SPY) | −5.5% (−3.3% vs SPY) | −4.8% (−5.5% vs SPY) |
| Mar 4, 2026 | Insider buy | Venturelli Larry M bought $199K | −0.8% (−1.5% vs SPY) | −7.5% (−7.0% vs SPY) | −15.1% (−11.6% vs SPY) |
| Mar 4, 2026 | Insider buy | Rietbroek Robbert bought $501K | −0.8% (−1.5% vs SPY) | −7.5% (−7.0% vs SPY) | −15.1% (−11.6% vs SPY) |
| Feb 27, 2026 | 8-K | Material definitive agreement | −3.8% (−3.9% vs SPY) | −8.6% (−6.6% vs SPY) | −25.1% (−17.1% vs SPY) |
| Feb 3, 2026 | Earnings | Earnings: missed the EPS estimate by -16.9% | −17.4% (−16.5% vs SPY) | −10.7% (−10.5% vs SPY) | −27.8% (−26.3% vs SPY) |
| Jan 8, 2026 | 8-K | Directors and officers: departures, appointments, pay | +1.0% (+0.3% vs SPY) | −2.4% (−2.8% vs SPY) | −17.4% (−18.1% vs SPY) |
| Dec 23, 2025 | 8-K | Material definitive agreement | −1.4% (−1.8% vs SPY) | −1.2% (−1.5% vs SPY) | +0.9% (+0.3% vs SPY) |
| Dec 8, 2025 | 8-K | Directors and officers: departures, appointments, pay | −9.1% (−9.0% vs SPY) | −0.4% (0.0% vs SPY) | +2.2% (+1.0% vs SPY) |
Insiders’ record here
In the year on the chart, Graphic Packaging Holding's insiders reported 4 open-market buys ($1.1M) and 0 sales ($0). Of the 4 old enough to score, 2 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was +4.0% and after a sale —.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.03 New debt or off-balance-sheet obligation | 13,268 | 0.0% | 50% | +1.2% | ±1.3% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Graphic Packaging Holding: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.