X0306 4 2021-05-07 0001723596 Columbia Financial, Inc. CLBK 0001813570 Sorrentini Lucy 19-01 ROUTE 208 NORTH FAIR LAWN NJ 07410 1 Common Stock 2021-05-07 4 A 0 203.2748 18.1200 A 972.6961 I By Stock-Based Deferral Plan Common Stock 300.0000 D Common Stock 3316.0000 I By Stock Award Represents phantom stock purchased, on a non-discretionary basis, by the trustee of the Bank's rabbi trust maintained in connection with the Columbia Bank Stock Based Deferral Plan, a non-qualified stock-based deferral plan. Stock unit interests under the Columbia Bank Stock Based Deferral Plan will be settled in shares of stock upon distribution to the reporting person. Stock Awards granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan vest in three approximately equal annual installments commencing on December 14, 2021. /s/ Christina M. Gattuso, Power of Attorney 2021-05-11