Stephanie Maiona - 25 Feb 2026 Form 4 Insider Report for NB Bancorp, Inc. (NBBK)

Signature
/s/ Steven Lanter, pursuant to power of attorney
Issuer symbol
NBBK
Transactions as of
25 Feb 2026
Net transactions value
$0
Form type
4
Filing time
27 Feb 2026, 11:09:14 UTC
Previous filing
27 Dec 2023

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Maiona Stephanie EVP, Dir CRE Banking 1063 GREAT PLAIN AVE, NEEDHAM /s/ Steven Lanter, pursuant to power of attorney 27 Feb 2025 0002003568

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NBBK Common Stock Award $0 +6,874 $0.000000 6,874 25 Feb 2026 Direct F1
holding NBBK Common Stock 40,430 25 Feb 2026 By 401(k) F2
holding NBBK Common Stock 3,422 25 Feb 2026 By ESOP F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares of restricted stock vest at a rate of 33 1/3% per year commencing on February 25, 2027.
F2 Reflects transactions not required to be reported pursuant to Section 16 of the Securities Act of 1934, as amended.