Columbia Financial, Inc.

CLBK·NASDAQ·$20.39Share Price as of 11/2·$2BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/07/26 10-QQ1 ended 03/31/2606/09/26 10-Q/AQ1 ended 03/31/2606/05/26 10-QQ1 ended 03/31/2605/11/26 10-K/AFY 202504/30/26

Disclosures

8-KCurrent report10/29/26 8-KCurrent report07/30/26 8-K/ACurrent report (amended)07/28/26 8-KCurrent report07/17/26 8-KCurrent report07/02/26

Prospectuses and Registrations

S-8Registration of securities for employees07/29/26 S-8Registration of securities for employees07/29/26 424B3Prospectus07/17/26 424B3Prospectus07/07/26 FWPFree writing prospectus07/07/26

Proxies

DEFM14ADefinitive proxy (merger)05/21/26 DEF 14ADefinitive proxy04/25/25 DEFA14AAdditional proxy materials04/25/25 DEF 14ADefinitive proxy04/26/24 DEFA14AAdditional proxy materials04/26/24

Ownership

Form 4Insider transaction10/20/26 Form 4Insider transaction10/20/26 Form 4Insider transaction10/06/26 Form 4Insider transaction10/06/26 Form 4Insider transaction10/06/26

Other

15-12GCertification of termination of registration07/21/26 8-K12BCurrent report07/21/26 EFFECTRequest for effectiveness07/07/26 11-KEmployee stock purchase plan report06/25/26 EFFECTRequest for effectiveness05/11/26