<SEC-DOCUMENT>0001104659-26-012136.txt : 20260209
<SEC-HEADER>0001104659-26-012136.hdr.sgml : 20260209
<ACCEPTANCE-DATETIME>20260209165525
ACCESSION NUMBER:		0001104659-26-012136
CONFORMED SUBMISSION TYPE:	S-8 POS
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20260209
DATE AS OF CHANGE:		20260209
EFFECTIVENESS DATE:		20260209

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NB Bancorp, Inc.
		CENTRAL INDEX KEY:			0001979330
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
		ORGANIZATION NAME:           	02 Finance
		EIN:				932560883
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8 POS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-291554
		FILM NUMBER:		26612263

	BUSINESS ADDRESS:	
		STREET 1:		1063 GREAT PLAIN AVENUE
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02492
		BUSINESS PHONE:		781-444-2100

	MAIL ADDRESS:	
		STREET 1:		1063 GREAT PLAIN AVENUE
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02492
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8 POS
<SEQUENCE>1
<FILENAME>tm265656d1_s8pos.htm
<DESCRIPTION>S-8 POS
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-291554</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>As filed with the Securities and Exchange Commission
on February 9, 2025</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POST-EFFECTIVE AMENDMENT NO. 1 TO&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 14pt"><B>FORM S-8</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REGISTRATION STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNDER</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>THE SECURITIES ACT OF 1933</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 14pt"><B>NB BANCORP, INC.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center">(Exact name of registrant as specified in its charter) &nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 48%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Maryland</B></FONT></TD>
    <TD STYLE="width: 4%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="width: 48%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt; background-color: white"><B>93-2560883</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">(State or other jurisdiction <BR>
of incorporation or organization)</TD>
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">I.R.S. Employer Identification No.</TD></TR>
  </TABLE>


<P STYLE="margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding-right: 5.4pt; padding-left: 5.4pt; width: 48%"><FONT STYLE="background-color: white"><B>1063 Great
    Plain Avenue</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center; width: 4%">&nbsp;</TD>
    <TD STYLE="text-align: center; padding-right: 5.4pt; padding-left: 5.4pt; width: 48%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="background-color: white"><B>Needham,
    Massachusetts</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="background-color: white"><B>02492</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding-right: 5.4pt; padding-left: 5.4pt">(Address of Principal Executive Offices)</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center; padding-right: 5.4pt; padding-left: 5.4pt">(Zip Code)</TD></TR>
</TABLE>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-size: 10pt"><B>BANKPROV 401(K) PLAN </B></FONT></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-size: 10pt">(Full Title of the Plan)</FONT></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Copies to:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="background-color: white">Joseph P. Campanelli</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="background-color: white"></FONT> c/o NB Bancorp, Inc. <FONT STYLE="background-color: white"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="background-color: white">1063 Great Plain Avenue</FONT> <FONT STYLE="background-color: white"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="background-color: white">Needham, Massachusetts 02492</FONT> <FONT STYLE="background-color: white"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="background-color: white">(781) 444-2100</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="background-color: white"></FONT> (Name, Address and Telephone</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">Number of Agent for Service) &nbsp; &nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 81pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of
&ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer,&rdquo; &ldquo;smaller reporting company&rdquo; and &ldquo;emerging growth
company&rdquo; in Rule 12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 70%; font-size: 10pt">Large accelerated filer <FONT STYLE="font-family: Wingdings">&uml;</FONT></TD>
    <TD STYLE="width: 30%; font-size: 10pt">Accelerated filer <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">&#120;</FONT></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt">Non-accelerated filer <FONT STYLE="font-family: Wingdings">&uml;</FONT></TD>
    <TD STYLE="font-size: 10pt">Smaller reporting company <FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt">Emerging growth company <FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">&#120;</FONT></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">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 7(a)(2)(B) of the Securities Act. <FONT STYLE="font-family: Wingdings">&uml;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXPLANATORY NOTE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">This Post-Effective Amendment No. 1 relates to
the following registration statement on Form S-8 (the &ldquo;Registration Statement&rdquo;) filed with the Securities and Exchange Commission
(the &ldquo;SEC&rdquo;) by NB Bancorp, Inc. (&ldquo;Needham&rdquo;, &ldquo;Registrant&rdquo; or &ldquo;Corporation&rdquo;):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

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<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify"><A HREF="https://www.sec.gov/Archives/edgar/data/1979330/000110465925112681/tm2531101d1_s8.htm" STYLE="-sec-extract: exhibit">Registration Statement File No. 333-291554, filed with the SEC on November 14, 2025</A>, pertaining to the
registration of shares of common stock of the Registrant, par value $0.01 per share (&ldquo;Needham common stock&rdquo;), reserved for
offer and sale pursuant to the BankProv 401(k) Plan (the &ldquo;BankProv 401(k) Plan&rdquo;), which was assumed by Registrant in connection
with the merger described below, if participants in the BankProv 401(k) Plan elected to invest in Needham common stock through the BankProv
401(k) Plan during payroll periods between November 15, 2025 and the merger of the BankProv 401(k) Plan with Needham&rsquo;s existing
401(k) plan, inclusive, and an indeterminate amount of plan interests issuable to eligible participants pursuant to the BankProv 401(k)
Plan.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>The Merger</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to the terms of the
Agreement and Plan of Merger, dated June 5, 2025 (the &ldquo;Merger Agreement&rdquo;), by and among Needham, Needham Bank, 1828 MS Inc.,
a wholly owned subsidiary of Needham formed solely to facilitate the transaction (&ldquo;Merger Sub&rdquo;), Provident Bancorp, Inc. (&ldquo;Provident&rdquo;)
and BankProv, (i) Merger Sub merged with and into Provident (the &ldquo;Merger&rdquo;) on November 15, 2025 at 12:01 a.m. (Eastern Time)
(the &ldquo;Effective Time&rdquo;), (ii) immediately after the Merger, Provident merged with and into Needham, with Needham as the surviving
entity (the &ldquo;Holdco Merger&rdquo;), and (iii) immediately after the Holdco Merger, BankProv merged with and into Needham Bank, with
Needham Bank as the surviving entity (the &ldquo;Bank Merger&rdquo; and, together with the Merger and the Holdco Merger, the &ldquo;Merger
Transaction&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Effective January 1, 2026,
the BankProv 401(k) plan merged into Needham&rsquo;s existing 401(k) plan. Accordingly, pursuant to the undertaking contained in the Registration
Statement to remove from registration by means of a post-effective amendment any of the securities that remain unsold at the termination
of the offering, the Registrant hereby amends the Registration Statement by deregistering all shares that remain unsold under the Registration
Statement, if any, as of the date hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 34.5pt">Pursuant to the requirements
of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all the requirements
for filing on Form S-8 and has duly caused the Post-Effective Amendment No. 1 to the Registration Statement on Form S-8 to be signed on
its behalf by the undersigned, thereunto duly authorized, in Needham, Commonwealth of Massachusetts on February 9, 2026.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 34.5pt">&nbsp;</P>

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  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD><B>NB Bancorp, Inc. &nbsp;</B></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; width: 50%">&nbsp; &nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 5%; text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 45%; text-align: justify">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: justify">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; vertical-align: top">/s/ Joseph P. Campanelli</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: justify">Name: Joseph P. Campanelli</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">Title: Chairman, President and Chief Executive Officer</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD>(Duly Authorized Representative)</TD></TR>
  </TABLE>

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