0001437749-26-013434.txt : 20260427 0001437749-26-013434.hdr.sgml : 20260427 20260427144809 ACCESSION NUMBER: 0001437749-26-013434 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260424 FILED AS OF DATE: 20260427 DATE AS OF CHANGE: 20260427 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lynch Christopher R. CENTRAL INDEX KEY: 0002003622 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41899 FILM NUMBER: 26899839 MAIL ADDRESS: STREET 1: 1063 GREAT PLAIN AVENUE CITY: NEEDHAM STATE: MA ZIP: 02492 ISSUER: 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 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 4 1 rdgdoc.xml FORM 4 X0609 4 2026-04-24 0001979330 NB Bancorp, Inc. NBBK 0002003622 Lynch Christopher R. false 1063 GREAT PLAIN AVE NEEDHAM MA 02492 1 0 Common Stock 2026-04-24 4 F 0 4150 19.82 D 92772 D Common Stock 60000 I By IRA Includes shares of restricted stock which vest at a rate of 20% per year commencing on April 24, 2026. Includes shares of restricted stock which vest 100% on January 2, 2027. /s/ Steven Lanter, pursuant to power of attorney 2026-04-27