UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 10, 2025

Northfield Bancorp, Inc.

(Exact name of registrant as specified in its charter)


Delaware	001-35791	80-0882592
(State or other jurisdiction of incorporation)	(Commission File No.)	(I.R.S. Employer Identification No.)

581 Main Street,

Woodbridge,

New Jersey

07095

(Address of principal executive offices)

(Zip code)

Registrant’s telephone number, including area code: (732) 499-7200

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4 (c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol

Name of exchange on which registered

Common stock, par value $0.01 per share

NFBK

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure.

On November 11, 2025, Northfield Bancorp, Inc.'s (the “Company”) management will participate in the Piper Sandler Financial Services Conference in Miami, Florida. The presentation to be discussed at the meeting will be available beginning November 10, 2025, at 5:00 p.m., Eastern Time, through the Company's Investor Relations website, located at www.eNorthfield.com, and will remain on the website for 30 days. To locate the presentation on the website, click on Investor Relations, then News & Market Data, then Presentations.

Item 9.01. Financial Statements and Exhibits.

Not Applicable.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


		NORTHFIELD BANCORP, INC.
DATE: November 10, 2025	By:	/s/ William R. Jacobs
		William R. Jacobs
		Chief Financial Officer
		(Principal Financial and Accounting Officer)

Northfield Bancorp, Inc. 8-K