[Form 4] Columbia Financial, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Columbia Financial (CLBK) reported an insider filing by its EVP & CIO. The Form 4 shows a transaction on 10/31/2025 coded “F” for 522 shares at $14.75 per share. Following this, the officer directly owned 4,857 common shares. Indirect holdings include 545.5975 shares by a stock-based deferral plan, 1,541.376 by a 401(k), 2,150 by an ESOP, and 437 by a SERP. Additional indirect positions include stock awards of 9,690, 11,315, and 11,018 shares, plus stock options covering 12,985, 8,459, 8,296, and 19,086 shares with exercise prices between $15.94 and $20.54 and expirations through 2035.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Prabhu Manesh Balachandran

(Last) (First) (Middle)

19-01 ROUTE 208 NORTH

(Street)

FAIR LAWN NJ 07410

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Columbia Financial, Inc. [ CLBK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CIO

3. Date of Earliest Transaction (Month/Day/Year)
10/31/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/31/2025		F		522	D	$14.75	4,857(1)	D
Common Stock								545.5975	I	By Stock-Based Deferral Plan
Common Stock								1,541.376(2)	I	By 401(k)
Common Stock								2,150	I	By ESOP
Common Stock								437	I	By SERP
Common Stock								9,690	I	By Stock Award II(3)
Common Stock								11,315	I	By Stock Award III(4)
Common Stock								11,018	I	By Stock Award IV(5)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options (right to buy)	$20.54							10/31/2023(6)	10/31/2032	Common Stock	12,985		12,985	D
Stock Options (right to buy)	$15.94							05/01/2024(7)	05/01/2033	Common Stock	8,459		8,459	D
Stock Options (right to buy)	$16.49							03/06/2025(8)	03/06/2034	Common Stock	8,296		8,296	D
Stock Options (right to buy)	$16.23							03/03/2026(9)	03/03/2035	Common Stock	19,086		19,086	D

Explanation of Responses:

1. The number of shares held directly includes certain shares that were previously held by Stock Award and that have subsequently vested.

2. This form reflects increases in beneficial ownership resulting from exempt acquisitions pursuant to rule 16b-3(c).

3. 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.

4. 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.

5. 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.

6. Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan are fully vested and exercisable.

7. 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.

8. 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.

9. 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.

Remarks:

	/s/ Dennis E. Gibney, Power of Attorney	11/04/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did CLBK’s EVP & CIO report on Form 4?

A transaction on 10/31/2025 coded “F” for 522 shares at $14.75 per share, and updated holdings across direct, indirect, awards, and options.

How many CLBK shares does the officer now hold directly?

Direct ownership is 4,857 common shares.

What indirect CLBK holdings were disclosed?

Indirect holdings include 545.5975 (stock-based deferral), 1,541.376 (401(k)), 2,150 (ESOP), and 437 (SERP) shares.

What stock awards were listed in the filing for CLBK?

Stock awards of 9,690, 11,315, and 11,018 shares, with vesting tied to time and performance criteria as described.

What CLBK stock options are outstanding for the officer?

Options on 12,985 at $20.54, 8,459 at $15.94, 8,296 at $16.49, and 19,086 at $16.23, expiring between 2032 and 2035.

What does transaction code “F” signify on Form 4?

The filing records a code “F” transaction for 522 shares at $14.75; code “F” denotes tax withholding-related transactions under Form 4 coding.