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NB Bancorp, Inc.

For the period ended Jul 22, 2026. Filed Jul 22, 2026.

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About this filing

A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

Jul 22, 2026 · Filed Jul 22, 2026

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NBBK$22.09+0.3%Stored close · as of Nov 6, 2026
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UNITED STATES**

SECURITIES AND EXCHANGE COMMISSION

**WASHINGTON, D.C. 20549

**FORM8-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): July 22, 2026

NB BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

​​​​​
Maryland​001-41899​ ​ ​93-2560883
(State or Other Jurisdiction)​(Commission File No.)​(I.R.S. Employer
of Incorporation)​​​Identification No.)
​​​
​1063 Great Plain Avenue, Needham, Massachusetts02492
​(Address of Principal Executive Offices)(Zip Code)

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:

​​
Title of each class​ ​ ​TradingSymbol(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.☐

Item 2.02Results of Operation and Financial Condition.

On July 22, 2026, NB Bancorp, Inc. (the “Company”), the holding company for Needham Bank, issued a press release in which it announced its earnings for the quarter ended June 30, 2026.

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 7.01Regulation FD Disclosure.

On July 22, 2026, the Company made available investor presentation materials which are intended to be used at an in-person investors bank meeting on July 28, 2026. The investor presentation materials are included in the Current Report on Form 8-K as Exhibit 99.2 and are incorporated herein by reference.

The information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, is being furnished and shall not be deemed to be “filed” for the purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section.

Item 8.01Other Events.

On July 22, 2026, the Board of Directors of the Company (the “Board”) declared a dividend of $0.07 per share. The dividend will be paid August 19, 2026 to shareholders of record as of August 5, 2026.

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 9.01Financial Statements and Exhibits.
(d)Exhibits
​​​
Exhibit No.​ ​ ​Description
99.1​Press Release dated July 22, 2026
99.2​Q2 2026 Investor Presentation
104.1​Cover Page Interactive Data File (Embedded within Inline XBRL document)

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.

​​​
​​NB BANCORP, INC.
​​​
DATE: July 22, 2026By:/s/Jean-Pierre Lapointe
​​Senior Executive Vice President and Chief Financial Officer
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