Francis Orfanello - 02 Jan 2026 Form 4 Insider Report for NB Bancorp, Inc. (NBBK)

Reporting relationship: Director
Issuer ticker: NBBK
Reported as of: 02 Jan 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Jan 2026, 12:23:27 UTC
Prior SEC filing: 29 Apr 2025
Source filing: View source filing
Reporting owner signature: /s/ Steven Lanter, pursuant to power of attorney

Key filing fact

Francis Orfanello filed Form 4 for NB Bancorp, Inc. (NBBK) on 06 Jan 2026.

Key facts

This page summarizes Francis Orfanello's Form 4 filing for NB Bancorp, Inc. (NBBK).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 06 Jan 2026, 12:23.

Change

Previous filing in this sequence was filed on 29 Apr 2025.
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 0002004976 Primary reporting owner

Orfanello Francis

Relationship: Director
Address: 1063 GREAT PLAIN AVE, NEEDHAM
Signature: /s/ Steven Lanter, pursuant to power of attorney
Signature date: 06 Jan 2026

Reported non-derivative transactions

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

NBBK transaction

Common Stock

Award

Transaction value: $0
Shares: +5,403
Change %: +4.1%
Price: $0.000000
Shares after: 135,640
Date: 02 Jan 2026
Ownership: Direct
Footnotes: F1, F2

NBBK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 7,500
Date: 02 Jan 2026
Ownership: By Retirement Plan

^* 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

Shares of restricted stock vest 100% on January 2, 2027.

Footnote F2

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

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .