New corporate name reflects the Company's broader business model and mission in contributing to the prosperity of its community, including its clients, colleagues and shareholders by providing comprehensive financial services.

Community Bank System, Inc. (NYSE:CBU) (the "Company"), a diversified financial services holding company operating four complementary business units: Community Bank N.A., Benefit Plan Administrative Services, Inc. ("BPAS"), OneGroup NY, Inc. ("OneGroup"), and Wealth Management, announced that it has changed its corporate name to "Community Financial System, Inc." ("Community Financial System") effective as of today. The name change reflects the Company's broader business model and mission in contributing to the prosperity of its community, including its clients, colleagues and shareholders by providing comprehensive financial services across its four main business lines.

The Company's ticker symbol will not change and its common stock will start trading on the New York Stock Exchange as Community Financial System, Inc. on May 24, 2024.