Steven M. Klein - 20 Jul 2026 Form 4 Insider Report for Northfield Bancorp, Inc. (NFBK)

Reporting relationship: Chairman, President & CEO, Director
Issuer ticker: NFBK
Reported as of: 20 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Jul 2026, 21:35:36 UTC
Prior SEC filing: 15 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ William R. Jacobs, pursuant to Power of Attorney

Key filing fact

Steven M. Klein filed Form 4 for Northfield Bancorp, Inc. (NFBK) on 20 Jul 2026.

Key facts

This page summarizes Steven M. Klein's Form 4 filing for Northfield Bancorp, Inc. (NFBK).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 20 Jul 2026, 21:35.

Change

Previous filing in this sequence was filed on 15 Jul 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 0001409460 Primary reporting owner

Klein Steven M

Relationship: Chairman, President & CEO, Director
Address: 581 MAIN STREET, SUITE 810, WOODBRIDGE
Signature: /s/ William R. Jacobs, pursuant to Power of Attorney
Signature date: 20 Jul 2026

Reported non-derivative transactions

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

NFBK transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -464,261
Change %: -100%
Price
Shares after: 0
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1

NFBK transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -66,997
Change %: -100%
Price
Shares after: 0
Date: 20 Jul 2026
Ownership: By 401(k)
Footnotes: F1

NFBK transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -59,119
Change %: -100%
Price
Shares after: 0
Date: 20 Jul 2026
Ownership: By ESOP
Footnotes: F1

Reported derivative securities

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

NFBK transaction Derivative

Stock Options

Disposed to Issuer

Transaction value
Shares: -40,000
Change %: -100%
Price
Shares after: 0
Date: 20 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 40,000
Exercise price: $16.89
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Steven M. Klein is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 2 footnotes

Footnote F1

Pursuant 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.

Footnote F2

Pursuant 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.