Prabhu Manesh Balachandran 4

4 · Columbia Financial, Inc. · Filed Mar 4, 2026

Insider Transaction Report

Form 4

Period: 2026-03-02

Columbia Financial, Inc.CLBK

Prabhu Manesh Balachandran

EVP & CIO

Transactions

Award
Stock Options (right to buy)
[F5]
2026-03-02+19,545→ 19,545 total
Exercise: $18.28From: 2027-03-02Exp: 2036-03-02→ Common Stock (19,545 underlying)
Award
Phantom Stock Unit
[F6][F7]
2026-03-02+7,669→ 7,669 total(indirect: Deferred Stock Unit Plan)
→ Common Stock (7,669 underlying)

Holdings

Common Stock
(indirect: By SERP)
437
Common Stock
(indirect: By Stock-Based Deferral Plan)
545.598
Common Stock
4,857
Common Stock
[F1]
(indirect: By 401(k))
1,660
Common Stock
(indirect: By ESOP)
2,150
Common Stock
[F2]
(indirect: By Stock Award II)
9,690
Common Stock
[F3]
(indirect: By Stock Award III)
11,315
Common Stock
[F4]
(indirect: By Stock Award IV)
11,018
Stock Options (right to buy)
[F8]
Exercise: $20.54From: 2023-10-31Exp: 2032-10-31→ Common Stock (12,985 underlying)
12,985
Stock Options (right to buy)
[F9]
Exercise: $15.94From: 2024-05-01Exp: 2033-05-01→ Common Stock (8,459 underlying)
8,459
Stock Options (right to buy)
[F10]
Exercise: $16.49From: 2025-03-06Exp: 2034-03-06→ Common Stock (8,296 underlying)
8,296
Stock Options (right to buy)
[F11]
Exercise: $16.23From: 2026-03-03Exp: 2035-03-03→ Common Stock (19,086 underlying)
19,086

Footnotes (11)

[F1]This form reflects increases in beneficial ownership resulting from exempt acquisitions pursuant to rule 16b-3(c).
[F10]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.
[F11]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.
[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 Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan vest in three approximately equal annual installments commencing on March 2, 2027.
[F6]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.
[F7]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.
[F8]Stock Options granted pursuant to the Columbia Financial, Inc. 2019 Equity Incentive Plan are fully vested and exercisable.
[F9]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.

Signature

/s/ Dennis E. Gibney, Power of Attorney|2026-03-04

Documents

1 file

4
wk-form4_1772653743.xmlPrimary
FORM 4