Columbia Financial, Inc. 8-K

What Happened
Columbia Financial, Inc. announced that at its June 25, 2026 Annual Meeting stockholders approved the Plan of Conversion and Reorganization to convert Columbia Bank MHC (the mutual holding company) into a fully public stock holding company (the “Conversion”), and approved the company’s acquisition of Northfield Bancorp, Inc., which is slated to occur simultaneously upon completion of the Conversion. At a Special Meeting of Members of the MHC on June 29, 2026, Columbia Bank depositors also approved the Conversion. The company said the resolicitation of maximum purchasers in the subscription offering of Columbia Financial, Inc. (a newly formed Maryland corporation and proposed successor) concluded on June 30, 2026. A press release dated July 1, 2026 was filed as Exhibit 99.1 to the 8-K.

Key Details

• Stockholder approval of the Plan of Conversion and Reorganization at the Annual Meeting: June 25, 2026.
• Depositor approval of the Conversion at the MHC Special Meeting: June 29, 2026.
• Resolicitation of maximum purchasers in the subscription offering for the proposed successor (Columbia Financial, Inc.) concluded on June 30, 2026.
• The acquisition of Northfield Bancorp, Inc. is approved to occur simultaneously with completion of the Conversion.

Why It Matters
These votes complete important corporate approvals required to move Columbia from a mutual holding company structure to a fully public stock holding company and to proceed with the planned Northfield acquisition. The concluded subscription offering solicitation is a related step toward implementing the Conversion and establishing the proposed successor entity. Investors should watch for subsequent filings and announcements reporting completion/closing, timing, and any additional financial details.