Company Analysis

NB Bancorp, Inc. (NBBK)

Nasdaq: NBBK · Savings Institutions, Not Federally Chartered · Needham, MA · filing with the SEC since 2023
Grade7.0
◀ Past 8.6● Present 6.4▶ Future 5.2
1 est.

Filings

117 filings since 2017 beside 134 insider forms · Accelerated filer and emerging growth company · read from EDGAR on Nov 13, 2026
Due nextAccelerated filer and emerging growth company
10-K Annual report for the fiscal year ending Dec 31, 2026Accelerated filers have 75 days after the fiscal year ends. by Mar 16, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 15 days after the quarter ended. The proxy statement was last filed Mar 27, 2026.

Filings a yearinsider forms included
44548568
2023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 9 times in the last 36 months, the newest Apr 22, 2026.SEC letters: 2 in the last 36 months, the newest Jul 28, 2025.
Insider forms 134

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 6, 2026 8-K items 1.01, 2.03, 7.01, 9.01 Major agreement signed; New debt or obligation taken on; Investor disclosure (Regulation FD) · Current report
Nov 4, 2026 10-Q Quarterly report Sep 30, 2026
Oct 15, 2026 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Aug 7, 2026 10-Q Quarterly report Jun 30, 2026
Jul 22, 2026 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Jun 25, 2026 11-K Employee plan annual report Dec 31, 2025
May 21, 2026 8-K items 8.01, 9.01 Other event · Current report
May 15, 2026 SCHEDULE 13G/A Large holder update, amended
May 13, 2026 8-K item 8.01 Other event · Current report May 12, 2026
May 8, 2026 10-Q Quarterly report Mar 31, 2026
Apr 29, 2026 8-K item 5.07 Shareholder vote · Current report
Apr 22, 2026 8-K items 2.02, 5.02, 8.01, 9.01 Results released; Officer or director change; Other event · Current report
Mar 27, 2026 DEF 14A Proxy statement Apr 29, 2026
Mar 27, 2026 ARS Annual report to shareholders Dec 31, 2025
Mar 27, 2026 SCHEDULE 13G/A Large holder update, amended
Mar 3, 2026 10-K Annual report Dec 31, 2025
Feb 13, 2026 SCHEDULE 13G Large holder notice
Feb 9, 2026 S-8 POS Employee stock plan update
Feb 4, 2026 8-K items 8.01, 9.01 Other event · Current report
Jan 30, 2026 SCHEDULE 13G Large holder notice
Jan 22, 2026 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Dec 5, 2025 SCHEDULE 13G/A Large holder update, amended
Nov 17, 2025 8-K items 2.01, 5.02, 7.01, 9.01 Purchase or sale of a business completed; Officer or director change; Investor disclosure (Regulation FD) · Current report Nov 15, 2025
Nov 14, 2025 S-8 Employee stock plan registration
Nov 14, 2025 8-K items 8.01, 9.01 Other event · Current report
Nov 13, 2025 425 Merger communication
Nov 13, 2025 8-K/A items 7.01, 8.01, 9.01 Investor disclosure (Regulation FD); Other event · Current report, amended
Nov 13, 2025 425 Merger communication
Nov 13, 2025 8-K items 7.01, 8.01, 9.01 Investor disclosure (Regulation FD); Other event · Current report
Nov 7, 2025 10-Q Quarterly report Sep 30, 2025
Nov 4, 2025 8-K items 8.01, 9.01 Other event · Current report
Oct 31, 2025 425 Merger communication
Oct 31, 2025 8-K items 8.01, 9.01 Other event · Current report
Oct 23, 2025 8-K/A items 2.02, 8.01, 9.01 Results released; Other event · Current report, amended Oct 22, 2025
Oct 22, 2025 8-K items 2.02, 8.01, 9.01 Results released; Other event · Current report
Oct 20, 2025 8-K items 8.01, 9.01 Other event · Current report
Oct 17, 2025 SCHEDULE 13G/A Large holder update, amended
Oct 8, 2025 8-K items 8.01, 9.01 Other event · Current report Oct 7, 2025
Aug 8, 2025 10-Q Quarterly report Jun 30, 2025
Jul 30, 2025 EFFECT Registration effective
40 of 117 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton NBBK · research, not advice