SEC Form 4 · accession 0001493225-26-000079

Northfield Bancorp, Inc. · NFBK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — EVP & PAO

Period of report

Jul 20, 2026

Accepted (ET)

Jul 20, 2026 · 9:35 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0001493225

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	D/I	Nature of ownership
Common Stock^F1	Jul 20, 2026	D	64,947	—	D	D
Common Stock^F1	Jul 20, 2026	D	38,614	—	D	I	By ESOP
Common Stock^F1	Jul 20, 2026	D	12,949	—	D	I	By 401(k)

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Restricted Stock Units^F2	—	Jul 20, 2026	D	15,888	D	—	—	Common Stock	15,888	0	D

F1Pursuant to the Agreement and Plan of Merger dated as of January 31, 2026, by and among Columbia Financial, Inc., a Delaware corporation, Columbia Financial, Inc., a Maryland corporation (Newco), Columbia Bank MHC and Northfield Bancorp, Inc. (Merger Agreement), at the effective time of the merger between Northfield Bancorp, Inc, and Newco, each issued and outstanding share of Northfield Bancorp, Inc. common stock was converted into the right to receive, at the election of the holder, either (i) 1.425 shares of Newco common stock or (ii) $14.25 in cash.
F2Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.