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Community Financial System stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+18.5% to $64.74
Community Financial System (CBU) stock rose 19% over the last 252 sessions, to $64.74. On the way it reported 0 quarters, its insiders filed 9 open-market trades and 3 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 22, 2026 | Form 144 | Form 144: Sally Steele plans to sell $155K | +2.7% (+3.8% vs SPY) | +3.3% (+3.4% vs SPY) | — |
| Sep 9, 2026 | Insider buy | Singh Savneet bought $25K | −1.2% (−0.7% vs SPY) | +0.1% (+1.2% vs SPY) | −5.7% (−7.4% vs SPY) |
| Aug 27, 2026 | Insider buy | Vaccaro John A bought $20K | −0.1% (−0.8% vs SPY) | −0.3% (−0.1% vs SPY) | −1.8% (−2.7% vs SPY) |
| Aug 24, 2026 | Insider buy | Hall Brenda M bought $30K | −0.8% (−0.6% vs SPY) | −0.6% (−1.1% vs SPY) | −3.1% (−4.3% vs SPY) |
| Jul 31, 2026 | Form 144 | Form 144: Sally Steele plans to sell $1.1M | −0.4% (−1.1% vs SPY) | +0.4% (−3.2% vs SPY) | −3.0% (−6.7% vs SPY) |
| Jun 25, 2026 | Form 144 | Form 144: Mark J. Bolus plans to sell $816K | +1.7% (+1.5% vs SPY) | +2.7% (+1.1% vs SPY) | +1.0% (+0.2% vs SPY) |
| Jun 25, 2026 | Insider sale | Bolus Mark J. sold $817K | +1.7% (+1.5% vs SPY) | +2.7% (+1.1% vs SPY) | +1.0% (+0.2% vs SPY) |
| Jun 8, 2026 | Insider sale | Stickels Eric sold $128K | +0.5% (+0.3% vs SPY) | +4.0% (+3.4% vs SPY) | +3.4% (+2.1% vs SPY) |
| Feb 11, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.3% (+1.2% vs SPY) | −2.4% (−1.3% vs SPY) | −14.4% (−10.0% vs SPY) |
| Feb 4, 2026 | Insider sale | Whipple John F. sold $277K | +1.3% (+1.8% vs SPY) | +3.1% (+2.7% vs SPY) | −7.1% (−5.9% vs SPY) |
| Feb 3, 2026 | Insider sale | Stickels Eric sold $130K | +1.0% (+1.8% vs SPY) | +4.6% (+4.8% vs SPY) | −4.3% (−2.8% vs SPY) |
| Feb 3, 2026 | Insider sale | Steele Sally A sold $256K | +1.0% (+1.8% vs SPY) | +4.6% (+4.8% vs SPY) | −4.3% (−2.8% vs SPY) |
| Jan 6, 2026 | 8-K | Directors and officers: departures, appointments, pay | +1.0% (+1.3% vs SPY) | −0.1% (−0.3% vs SPY) | +8.3% (+10.4% vs SPY) |
| Dec 29, 2025 | Insider sale | Gillan-Myer Maureen A sold $203K | −0.3% (0.0% vs SPY) | −0.4% (0.0% vs SPY) | +3.4% (+2.6% vs SPY) |
Insiders’ record here
In the year on the chart, Community Financial System's insiders reported 3 open-market buys ($75K) and 6 sales ($1.8M). Of the 6 old enough to score, 5 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 — and after a sale −6.2%.
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% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Community Financial System: 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.