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GameStop stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+17.7% to $25.12
GameStop (GME) stock rose 18% over the last 252 sessions, to $25.12. On the way it reported 0 quarters, its insiders filed 18 open-market trades and 6 Form 144 notices of planned sales, and the company filed 2 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 |
|---|---|---|---|---|---|
| Oct 12, 2026 | Form 144 | Form 144: Daniel Moore plans to sell $411K | +2.5% (+2.6% vs SPY) | +0.9% (+2.9% vs SPY) | — |
| Oct 5, 2026 | Form 144 | Form 144: Mark Robinson plans to sell $96K | +2.2% (+1.5% vs SPY) | +7.3% (+6.1% vs SPY) | −2.1% (+0.2% vs SPY) |
| Oct 1, 2026 | Form 144 | Form 144: Mark Haymond Robinson plans to sell $177K | −2.2% (−2.4% vs SPY) | −0.3% (−2.2% vs SPY) | −2.7% (−3.6% vs SPY) |
| Oct 1, 2026 | Form 144 | Form 144: Daniel Moore plans to sell $177K | −2.2% (−2.4% vs SPY) | −0.3% (−2.2% vs SPY) | −2.7% (−3.6% vs SPY) |
| Sep 29, 2026 | Insider buy | Cohen Ryan bought $10.6M | −0.8% (−0.7% vs SPY) | +5.2% (+4.0% vs SPY) | −2.6% (−3.1% vs SPY) |
| Sep 21, 2026 | Insider buy | Cohen Ryan bought $26.4M | +0.5% (−1.0% vs SPY) | +3.3% (+2.0% vs SPY) | +15.5% (+14.9% vs SPY) |
| Sep 21, 2026 | Insider buy | Attal Alain bought $402K | +0.5% (−1.0% vs SPY) | +3.3% (+2.0% vs SPY) | +15.5% (+14.9% vs SPY) |
| Sep 10, 2026 | Insider buy | Cohen Ryan bought $20.4M | +2.5% (+3.1% vs SPY) | +10.0% (+11.1% vs SPY) | +24.0% (+22.2% vs SPY) |
| Sep 10, 2026 | Insider buy | Attal Alain bought $100K | +2.5% (+3.1% vs SPY) | +10.0% (+11.1% vs SPY) | +24.0% (+22.2% vs SPY) |
| Sep 9, 2026 | Insider buy | Grube James bought $196K | +5.2% (+5.6% vs SPY) | +12.7% (+13.8% vs SPY) | +26.3% (+24.6% vs SPY) |
| Sep 8, 2026 | Insider buy | Cheng Lawrence bought $1.0M | −1.4% (−0.9% vs SPY) | +12.1% (+13.3% vs SPY) | +25.6% (+24.2% vs SPY) |
| Aug 31, 2026 | 8-K | Material definitive agreement | +2.8% (+3.1% vs SPY) | +7.0% (+6.9% vs SPY) | +28.5% (+28.9% vs SPY) |
| Aug 3, 2026 | 8-K | Material definitive agreement | −13.1% (−14.5% vs SPY) | −12.5% (−16.0% vs SPY) | −16.7% (−19.4% vs SPY) |
| Jul 6, 2026 | Form 144 | Form 144: Mark Robinson plans to sell $90K | −0.3% (−1.1% vs SPY) | −5.1% (−6.5% vs SPY) | −18.0% (−19.7% vs SPY) |
| Jul 1, 2026 | Form 144 | Form 144: Mark Haymond Robinson plans to sell $159K | +2.5% (+2.6% vs SPY) | −1.7% (−1.6% vs SPY) | −0.9% (−0.2% vs SPY) |
| Jul 1, 2026 | Insider sale | Moore Daniel William sold $159K | +2.5% (+2.6% vs SPY) | −1.7% (−1.6% vs SPY) | −0.9% (−0.2% vs SPY) |
| Apr 1, 2026 | Insider sale | Robinson Mark Haymond sold $165K | −1.2% (−2.0% vs SPY) | −0.6% (−4.4% vs SPY) | +8.0% (−2.0% vs SPY) |
| Apr 1, 2026 | Insider sale | Moore Daniel William sold $165K | −1.2% (−2.0% vs SPY) | −0.6% (−4.4% vs SPY) | +8.0% (−2.0% vs SPY) |
| Jan 23, 2026 | Insider buy | Cheng Lawrence bought $114K | −0.6% (−0.7% vs SPY) | −1.4% (−2.2% vs SPY) | +2.2% (+3.1% vs SPY) |
| Jan 21, 2026 | Insider buy | Cohen Ryan bought $10.8M | +2.8% (+1.6% vs SPY) | +13.8% (+11.1% vs SPY) | +12.5% (+11.5% vs SPY) |
| Jan 21, 2026 | Insider buy | Attal Alain bought $260K | +2.8% (+1.6% vs SPY) | +13.8% (+11.1% vs SPY) | +12.5% (+11.5% vs SPY) |
| Jan 20, 2026 | Insider buy | Cohen Ryan bought $10.6M | 0.0% (+2.1% vs SPY) | +12.9% (+12.8% vs SPY) | +12.4% (+13.1% vs SPY) |
| Jan 20, 2026 | Insider buy | Attal Alain bought $251K | 0.0% (+2.1% vs SPY) | +12.9% (+12.8% vs SPY) | +12.4% (+13.1% vs SPY) |
| Jan 12, 2026 | Insider sale | Robinson Mark Haymond sold $256K | −1.2% (−1.3% vs SPY) | −0.6% (−0.3% vs SPY) | +15.6% (+15.9% vs SPY) |
| Jan 2, 2026 | Insider sale | Robinson Mark Haymond sold $112K | +2.6% (+2.5% vs SPY) | +6.4% (+5.4% vs SPY) | +25.3% (+23.3% vs SPY) |
| Jan 2, 2026 | Insider sale | Moore Daniel William sold $112K | +2.6% (+2.5% vs SPY) | +6.4% (+5.4% vs SPY) | +25.3% (+23.3% vs SPY) |
Insiders’ record here
In the year on the chart, GameStop's insiders reported 12 open-market buys ($81.1M) and 6 sales ($969K). Of the 11 old enough to score, 7 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 +12.0% and after a sale +14.6%.
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 |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
GameStop: 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.