SEC Form 4 · accession 0001493225-26-000080

Northfield Bancorp, Inc. · NFBK

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

Reporting owner

Officer — Chairman, President & CEO · Director

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	464,261	—	D	D
Common Stock^F1	Jul 20, 2026	D	66,997	—	D	I	By 401(k)
Common Stock^F1	Jul 20, 2026	D	59,119	—	D	I	By ESOP

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Options^F2	$16.89	Jul 20, 2026	D	40,000	D	Nov 1, 2018	Nov 1, 2027	Common Stock	40,000	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 outstanding and unexercised option immediately prior to the effective time of the merger, whether vested or unvested, was converted into an option exercisable for a total number of shares of Newco common stock equal to the total number of shares underlying the Northfield Bancorp, Inc. option multiplied by 1.425, rounded down to the nearest whole share, with an exercise price per share equal to the exercise price applicable to the underlying Northfield Bancorp, Inc. option divided by 1.425, rounded up to the nearest cent.