Community Financial System, Inc. filed a Form 8-K with the SEC on October 27, 2026, furnishing a press release announcing its results of operations for the third quarter ended September 30, 2026.

Key Highlights

  • Reporting period: Third quarter ended September 30, 2026.
  • Filing date: October 27, 2026, the same date as the earliest event reported.
  • Exchange and ticker: Common Stock ($1.00 par value per share) trades on NYSE:CBU.
  • Signed by: Marya Burgio Wlos, Executive Vice President and Chief Financial Officer.
  • Exhibit furnished: Press Release dated October 27, 2026 (Exhibit 99.1), containing the operational results announcement.

Community Financial System Discloses Q3 2026 Operating Results via Item 2.02

According to the filing, Community Financial System, Inc. reported its third-quarter results under Item 2.02 (Results of Operations and Financial Condition) of Form 8-K. The company disclosed that its public announcement was made by means of a news release, furnished as Exhibit 99.1 to the filing. The filing does not reproduce specific financial figures in the 8-K body itself; the detailed results are contained within the attached press release.

The filing states that the information furnished under Item 2.02, including Exhibit 99.1, "shall not be deemed to be 'filed' for purposes of Section 18 of the Securities Exchange Act of 1934, as amended," and is not incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference. The registrant is incorporated in Delaware, holds Commission File Number 001-13695, and its principal executive offices are located at 333 Butternut Drive, Syracuse, New York 13214.

The Form 8-K was signed on October 27, 2026, by Marya Burgio Wlos in her capacity as Executive Vice President and Chief Financial Officer. The filing also includes a Cover Page Interactive Data File (Exhibit 104), embedded in the cover page and formatted in Inline XBRL.

What Was Disclosed

Community Financial System, Inc. filed a current report announcing third-quarter 2026 operational results via a furnished press release. The 8-K was signed by CFO Marya Burgio Wlos on October 27, 2026, with the results detail contained in Exhibit 99.1.