Manesh Balachandran Prabhu - 01 May 2026 Form 4 Insider Report for Columbia Financial, Inc. (CLBK)

Reporting relationship: EVP & CIO
Issuer ticker: CLBK
Reported as of: 01 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 05 May 2026, 16:09:56 UTC
Prior SEC filing: 17 Mar 2026
Next SEC filing: 22 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Dennis E. Gibney, Power of Attorney

Key filing fact

Manesh Balachandran Prabhu filed Form 4 for Columbia Financial, Inc. (CLBK) on 05 May 2026.

Key facts

This page summarizes Manesh Balachandran Prabhu's Form 4 filing for Columbia Financial, Inc. (CLBK).
2 reported transactions and 6 derivative rows are listed below.
Accepted by SEC: 05 May 2026, 16:09.

Change

Previous filing in this sequence was filed on 17 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001949911 Primary reporting owner

Prabhu Manesh Balachandran

Relationship: EVP & CIO
Address: 19-01 ROUTE 208 NORTH, FAIR LAWN
Signature: /s/ Dennis E. Gibney, Power of Attorney
Signature date: 05 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CLBK transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -7,267
Change %: -48%
Price: $0.000000^*
Shares after: 7,927
Date: 01 May 2026
Ownership: Direct
Footnotes: F1, F2

CLBK transaction

Common Stock

Tax liability

Transaction value
Shares: -830
Change %: -10%
Price: $19.25^*
Shares after: 7,097
Date: 01 May 2026
Ownership: Direct
Footnotes: F2

CLBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,022
Date: 01 May 2026
Ownership: By Stock-Based Deferral Plan

CLBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,996
Date: 01 May 2026
Ownership: By 401(k)
Footnotes: F3

CLBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,220
Date: 01 May 2026
Ownership: By ESOP
Footnotes: F3

CLBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 865
Date: 01 May 2026
Ownership: By SERP
Footnotes: F3

CLBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 10,286
Date: 01 May 2026
Ownership: By Stock Award III
Footnotes: F4

CLBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 11,018
Date: 01 May 2026
Ownership: By Stock Award IV
Footnotes: F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CLBK holding Derivative

Stock Options (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 12,985
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,985
Exercise price: $20.54
Footnotes: F6

CLBK holding Derivative

Stock Options (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 8,459
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 8,459
Exercise price: $15.94
Footnotes: F6

CLBK holding Derivative

Stock Options (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 8,296
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 8,296
Exercise price: $16.49
Footnotes: F7

CLBK holding Derivative

Stock Options (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 19,086
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 19,086
Exercise price: $16.23
Footnotes: F8

CLBK holding Derivative

Stock Options (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 19,545
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 19,545
Exercise price: $18.28
Footnotes: F9

CLBK holding Derivative

Phantom Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 7,669
Date: 01 May 2026
Ownership: Deferred Stock Unit Plan
Underlying class: Common Stock
Underlying amount: 7,669
Exercise price
Footnotes: F10, F11

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 11 footnotes

Footnote F1

Represents the forfeiture of performance-based restricted stock granted to the reporting person on May 1, 2023 that were eligible to vest based on certain performance objectives. On May 1, 2026 the Company determined that, based on the Company's performance over the applicable performance period, 1,454 shares would vest and 7,267 shares would be forfeited.

Footnote F2

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

Footnote F3

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

Footnote F4

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.

Footnote 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 3, 2028.

Footnote F6

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

Footnote F7

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.

Footnote F8

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.

Footnote F9

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.

Footnote F10

One phantom stock unit is the economic equivalent of one share of CLBK Common Stock. Phantom stock units were granted under the Columbia Financial, Inc. 2026 Phantom Stock Plan and will be settled in cash upon distribution.

Footnote F11

On the settlement date, phantom stock units will be payable in cash. The cash value will be calculated, in accordance with the Columbia Financial, Inc. 2026 Phantom Stock Plan, based on the closing stock price of the Company's Common Stock on the determination date.

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