CBU

COMMUNITY FINANCIAL SYSTEM, INC.

Financial Services National Commercial Banks Market cap: $3.1B All insider activity → Quote and statistics → Sign in to watch CBU Sign in to set a price alert

AI summary Directors make routine open-market purchases following steady quarterly results.

Insider Score Band below 60

Research score: 36
AI adjustment: +5

Research score, not a recommendation.

Total bought$75.3K3 Form 4 purchases

Distinct insiders3open-market buyers

Lead insiderHall Brenda MDirector

Cluster window2026-08-24 → 2026-09-09active

Market data

Live quote and chart from Yahoo Finance, loaded through this server. Insider purchases are marked on the chart.

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Why this score

Research score: a weighted blend of the five factors, times the routine and offering discounts, minus the selling penalty.

Breadth number & diversity of participating insiders

37%

Seniority executive rank of buyers (CEO/CFO/Director)

60%

Commitment purchase size relative to company & holdings

47%

Context buying into stock weakness signals conviction

37%

Timing coordinated purchases within a tight window

74%

Routine-purchase discount × 1.00

Company-type / offering discount × 1.00

Net insider selling penalty − 15

Why are they buying?

AI · discretionary · catalyst none · documented

The directors likely purchased shares to increase their personal stake following the release of solid second-quarter 2026 results in late July.

Three separate directors (Brenda M. Hall, John A. Vaccaro, and Savneet Singh) acquired open-market shares between August 24 and September 9, 2026, with no reported company plans or alternative acquisition schemes involved.

Filing references and sources

Community Financial System, Inc. Reports Second Quarter 2026 Results (opens in a new tab)

Stock Price & Insider Purchase History

Daily close price with open-market insider purchases plotted over time

Loading price history…

Transactions

3 Form 4 trades · 3 insiders Sign in to download CSV

Purchases in this cluster, grouped by insider, largest first
Date	Insider	Role	Shares	Price	Value	Filing
2026-08-24	Hall Brenda M history of Hall Brenda M's purchases	Director	476	$63.59	$30.3K	SEC filing for Hall Brenda M (opens in a new tab)
2026-09-09	Singh Savneet history of Singh Savneet's purchases	Director	400	$62.47	$25.0K	SEC filing for Singh Savneet (opens in a new tab)
2026-08-27	Vaccaro John A history of Vaccaro John A's purchases	Director	317	$63.11	$20.0K	SEC filing for Vaccaro John A (opens in a new tab)
Total					$75.3K

Other buying runs at CBU

A run ends after a pause in the buying, so one company can have several. Returns are the stock's return minus its benchmark's (IWM for small companies, SPY otherwise), from the first open after the run became a cluster. Past results, not a forecast.

After this run became a cluster: 21 days -7.7%63 days –126 days –

Other insider buying runs at this company, newest first, with the return against the benchmark that followed
Window	Insiders	Total	Score	21 days	63 days	126 days	Status
2023-03-15 → 2023-03-20	3	$268.7K	47	-18.7%	-24.4%	-34.1%	closed