| 2026-07-30 | Press release | Press release · Q2 2026 · Jul 2026 |
| 2026-07-20 | Press release | Columbia Financial, Inc. Announces Completion of Second Step Conversion and $1.7 Billion Stock Offering and Acquisition |
| 2026-07-16 | Press release | Columbia Financial, Inc. Announces the Results of Its Offering; Final Merger Consideration; and Anticipated Closing Date |
| 2026-07-07 | Press release | Columbia Financial, Inc. Commences Firm Commitment Underwritten Offering |
| 2026-07-02 | 8-K | Form 8-K, Item 8.01 |
| 2026-07-01 | Press release | Columbia Financial, Inc. Announces Receipt of Stockholder and Depositor Approvals of Pending Second Step Conversion and |
| 2026-06-25 | 8-K | Form 8-K, Item 5.07 |
| 2026-06-23 | Press release | Columbia Financial, Inc. Announces Preliminary Subscription Offering Results and Increase in Maximum Purchase Limits |
| 2026-06-11 | Press release | Columbia Financial, Inc. and Northfield Bancorp, Inc. Announce Mailing of Merger Consideration Election Materials and De |
| 2026-06-05 | 10-Q | Form 10-Q/A for the quarter ended Mar 31 |
| 2026-05-15 | 8-K | Form 8-K, Item 1.01 |
| 2026-05-11 | Press release | Columbia Financial, Inc. Announces Commencement of Second-Step Conversion Offering; Receipt of Regulatory Approvals for |
| 2026-05-11 | 8-K | Form 8-K, Item 8.01 |
| 2026-05-11 | 10-Q | Form 10-Q for the quarter ended Mar 31 |
| 2026-04-30 | 10-K | Annual report on Form 10-K/A, FY25 |
| 2026-04-27 | 8-K | Form 8-K, Item 5.02 |
| 2026-04-23 | 8-K | Form 8-K, Item 5.02 |
| 2026-04-20 | 8-K | Form 8-K, Item 2.02 results |
| 2026-03-06 | 10-K | Annual report on Form 10-K, FY25 |
| 2026-02-17 | 8-K | Form 8-K, Item 5.02 |
| 2026-02-02 | Deck | Investor Presentation |
| 2026-02-02 | Press release | Press release · Q4 2025 · Feb 2026 |
| 2026-02-02 | Press release | Columbia Financial, Inc. and Northfield Bancorp, Inc. Announce Plans to Merge |
| 2026-02-02 | Press release | Columbia Financial, Inc. Announces Financial Results for the Fourth Quarter and Year Ended December 31, 2025 |
| 2026-02-02 | 8-K | Form 8-K, Item 5.02 |
| 2026-02-02 | 8-K | Form 8-K, Item 2.02 results |
| 2026-02-02 | 8-K | Form 8-K, Item 1.01 |
| 2026-01-29 | Press release | Columbia Financial, Inc. Announces Promotion of Dennis E. Gibney to First Senior Executive Vice President and Chief Bank |
| 2025-11-10 | 8-K | Form 8-K, Item 7.01 |
| 2025-11-07 | 10-Q | Form 10-Q for the quarter ended Sep 30 |
| 2025-10-20 | Press release | Columbia Financial, Inc. Announces Financial Results for the Third Quarter Ended September 30, 2025 |
| 2025-10-20 | 8-K | Form 8-K, Item 2.02 results |
| 2025-09-08 | 8-K | Form 8-K, Item 8.01 |
| 2025-09-08 | 8-K | Form 8-K, Item 5.02 |
| 2025-08-08 | 10-Q | Form 10-Q for the quarter ended Jun 30 |
| 2025-07-30 | Press release | Columbia Financial, Inc. Announces Financial Results for the Second Quarter Ended June 30, 2025 |
| 2025-07-30 | 8-K | Form 8-K, Item 2.02 results |
| 2025-06-06 | 8-K | Form 8-K, Item 5.07 |
| 2025-06-05 | 8-K | Form 8-K, Item 7.01 |
| 2025-05-09 | 10-Q | Form 10-Q for the quarter ended Mar 31 |