Christine Roberts - 24 Apr 2026 Form 4 Insider Report for NB Bancorp, Inc. (NBBK)

Reporting relationship: SEVP and COO
Issuer ticker: NBBK
Reported as of: 24 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Apr 2026, 14:47:29 UTC
Prior SEC filing: 27 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Steven Lanter, pursuant to power of attorney

Key filing fact

Christine Roberts filed Form 4 for NB Bancorp, Inc. (NBBK) on 27 Apr 2026.

Key facts

This page summarizes Christine Roberts's Form 4 filing for NB Bancorp, Inc. (NBBK).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 27 Apr 2026, 14:47.

Change

Previous filing in this sequence was filed on 27 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002052927 Primary reporting owner

Roberts Christine

Relationship: SEVP and COO
Address: 1063 GREAT PLAIN AVE, NEEDHAM
Signature: /s/ Steven Lanter, pursuant to power of attorney
Signature date: 27 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NBBK transaction

Common Stock

Tax liability

Transaction value
Shares: -3,589
Change %: -4.8%
Price: $19.82^*
Shares after: 71,081
Date: 24 Apr 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Includes shares of restricted stock which vest at a rate of 20% per year commencing on April 24, 2026.

Footnote F2

Includes shares of restricted stock which vest at a rate of 33 1/3% per year commencing on February 25, 2027.

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