Mark J. Bolus has sold CBU and made no open-market buys since Jul 2018

Mark J. Bolus is a non‑executive director of Community Financial System, Inc. (NASDAQ: CBU), a regional financial services company headquartered in Syracuse, New York.( As a member of the board of directors, he participates in overseeing the company’s strategy, governance, and performance, contributing to the long‑term direction of the business as an outside director rather than an operational executive.(

Bolus is a long‑standing corporate insider at Community Financial System, Inc., with substantial direct and indirect ownership in the company’s common stock.( Recent SEC Form 4 filings show him holding tens of thousands of shares directly, along with additional shares held through several family trusts, reflecting a significant equity stake aligned with shareholder interests.( His insider trading history, primarily composed of open‑market stock sales in the normal course of portfolio management, is regularly disclosed through SEC filings and tracked by financial data services such as OpenInsider, Fintel, and other insider‑monitoring platforms.( Specific details on his earlier career positions and formal education are not publicly reported in standard insider‑trading and market‑data profiles.(

Written by Perplexity from public sources.