Allyson Katz Schlesinger - 06 Mar 2026 Form 4 Insider Report for Columbia Financial, Inc. (CLBK)

Role: SEVP&Head of Consumer Banking
Signature: /s/ Dennis E. Gibney, Power of Attorney
Issuer symbol: CLBK
Transactions as of: 06 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 10 Mar 2026, 16:14:05 UTC
Previous filing: 04 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Schlesinger Allyson Katz	SEVP&Head of Consumer Banking	19-01 ROUTE 208 NORTH, FAIR LAWN	/s/ Dennis E. Gibney, Power of Attorney	10 Mar 2026	0001752640

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CLBK	Common Stock	Tax liability		-428	-0.65%	$18.06^*	65,005	06 Mar 2026	Direct	F1
holding	CLBK	Common Stock						13,543	06 Mar 2026	By Stock-Based Deferral Plan
holding	CLBK	Common Stock						6,683	06 Mar 2026	By ESOP
holding	CLBK	Common Stock						6,459	06 Mar 2026	By SERP
holding	CLBK	Common Stock						4,683	06 Mar 2026	By SIM
holding	CLBK	Common Stock						14,470	06 Mar 2026	By Stock Award II	F2
holding	CLBK	Common Stock						11,520	06 Mar 2026	By Stock Award III	F3
holding	CLBK	Common Stock						12,288	06 Mar 2026	By Stock Award IV	F4
holding	CLBK	Common Stock						12,574	06 Mar 2026	By Stock Award V	F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	CLBK	Stock Options (right to buy)						155,294	06 Mar 2026	Common Stock	155,294	$15.60	Direct	F6
holding	CLBK	Stock Options (right to buy)						12,632	06 Mar 2026	Common Stock	12,632	$15.94	Direct	F7
holding	CLBK	Stock Options (right to buy)						9,292	06 Mar 2026	Common Stock	9,292	$16.49	Direct	F8
holding	CLBK	Stock Options (right to buy)						21,289	06 Mar 2026	Common Stock	21,289	$16.23	Direct	F9
holding	CLBK	Stock Options (right to buy)						21,364	06 Mar 2026	Common Stock	21,364	$18.28	Direct	F10

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The number of shares held directly includes certain shares that were previously held by Stock Award and that have subsequently vested.
F2	Stock Awards granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive plan, 25% of which vest in three approximately equal annual installments commencing on May 1, 2024; and the remaining 75% of which vest upon achievement of certain specified performance-based vesting criteria, which if achieved, such Awards would vest three years after the date of the Award.
F3	Stock Awards granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive plan, 25% of which vest in three approximately equal annual installments commencing on March 6, 2025; and the remaining 75% of which vest upon achievement of certain specified performance-based vesting criteria, which if achieved, such Awards would vest three years after the date of the Award.
F4	Stock Awards granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive plan, which vest upon achievement of certain specified performance-based vesting criteria, which if achieved, such Awards would vest three years after the date of the Award on March 3, 2028.
F5	Stock Awards granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive plan, which vest upon achievement of certain specified performance-based vesting criteria, which if achieved, such Awards would vest three years after the date of the Award on March 2, 2029.
F6	Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan are fully vested and exercisable.
F7	Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan vest in three approximately equal annual installments commencing on May 1, 2024.
F8	Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan vest in three approximately equal annual installments commencing on March 6, 2025.
F9	Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan vest in three approximately equal annual installments commencing on March 3, 2026.
F10	Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan vest in three approximately equal annual installments commencing on March 2, 2027.