[8-K] NB Bancorp, Inc. Reports Material Event

Rhea-AI Filing Summary

NB Bancorp, Inc. (NBBK) reported two updates. The company issued a press release announcing its earnings for the quarter ended September 30, 2025. The press release is furnished as Exhibit 99.1 and is not deemed filed under Section 18.

The Board declared a cash dividend of $0.07 per share. The dividend will be paid on November 19, 2025 to stockholders of record as of November 5, 2025. This represents a direct cash return to shareholders on the stated dates and terms.

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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): October 22, 2025

NB BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

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Maryland	​	001-41899		93-2560883
(State or Other Jurisdiction)	​	(Commission File No.)	​	(I.R.S. Employer
of Incorporation)	​	​	​	Identification No.)

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​	1063 Great Plain Avenue, Needham, Massachusetts	02492
​	(Address of Principal Executive Offices)	(Zip Code)

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Registrant’s telephone number, including area code: (781) 444-2100

Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ 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:

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Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, Par Value $0.01 Per Share	​	NBBK	​	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. ☐

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Item 2.02 Results of Operation and Financial Condition.

On October 22, 2025, NB Bancorp, Inc., the holding company for Needham Bank, issued a press release in which it announced its earnings for the quarter ended September 30, 2025.

A copy of the press release announcing the results is included as Exhibit 99.1 to this Current Report on Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933.

Item 8.01 Other Events.

On October 22, 2025, the Board of Directors of NB Bancorp, Inc. declared a dividend of $0.07 per share. The dividend will be paid November 19, 2025 to stockholders of record as of November 5, 2025.

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A copy of the press release announcing the declaration of the dividend is attached to this Current Report on Form 8-K as Exhibit 99.1 and is hereby incorporated by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

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Exhibit No.		Description
99.1	​	Press Release dated October 22, 2025
104.1	​	Cover Page Interactive Data File (Embedded within Inline XBRL document)

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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.

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​	​	NB BANCORP, INC.
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DATE: October 22, 2025	By:	/s/Jean-Pierre Lapointe
​	​	Executive Vice President and Chief Financial Officer

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FAQ

What did NB Bancorp (NBBK) announce in this 8-K?

NB Bancorp furnished its Q3 2025 earnings press release (Exhibit 99.1) and declared a $0.07 per share cash dividend.

What is the NB Bancorp (NBBK) dividend amount and key dates?

The dividend is $0.07 per share, payable on November 19, 2025 to shareholders of record on November 5, 2025.

Which period do the announced results cover for NBBK?

The press release covers earnings for the quarter ended September 30, 2025.

Is the earnings press release considered filed or furnished?

It is furnished as Exhibit 99.1 and not deemed “filed” under Section 18 of the Exchange Act.

On which exchange does NB Bancorp (NBBK) trade?

NB Bancorp’s common stock trades on The Nasdaq Stock Market, LLC under the symbol NBBK.

Who signed the report for NB Bancorp?

The report was signed by Jean-Pierre Lapointe, Executive Vice President and Chief Financial Officer.