NB Bancorp EVP granted 6,874 restricted shares

White James J. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

White James J. reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp EVP James J. White received a grant of 6,874 shares of common stock on February 25, 2026 at no purchase price. These restricted shares vest in three equal annual installments starting February 25, 2027. After the grant, he directly owns 16,874 shares, along with additional indirect holdings through an IRA, 401(k), and ESOP accounts.

Insider Trade Summary

Grant/Award: 6,874 shares

Grant/Award 4 txns

Insider White James J.

Role EVP, Chief Administrative Offc

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6,874	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 16,874 shares (Direct); Common Stock — 10,000 shares (Indirect, By IRA); Common Stock — 30,217 shares (Indirect, By 401(k)); Common Stock — 3,382 shares (Indirect, By ESOP)

Footnotes (2)

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did NB Bancorp (NBBK) report for James J. White?

NB Bancorp reported that EVP James J. White received a grant of 6,874 shares of common stock. The shares were awarded at no purchase price as restricted stock, representing equity-based compensation rather than an open-market trade or cash purchase.

How many NB Bancorp (NBBK) shares did James J. White receive and at what price?

James J. White received 6,874 NB Bancorp common shares at a price of $0.00 per share. This indicates a stock award or grant, not a purchase, and reflects equity compensation instead of a traditional market transaction involving cash outlay.

What is the vesting schedule for James J. White’s NB Bancorp restricted shares?

The 6,874 restricted shares for James J. White vest at 33 1/3% per year starting February 25, 2027. This creates a three-year vesting schedule, aligning his long-term incentives with the company’s performance over multiple future years.

What is James J. White’s direct NB Bancorp (NBBK) share ownership after the grant?

After the restricted stock grant, James J. White directly owns 16,874 NB Bancorp common shares. This figure reflects his direct holdings only and is separate from additional indirect retirement-related holdings disclosed in the same insider report.

What indirect NB Bancorp holdings are associated with James J. White?

Indirect holdings reported for James J. White include 10,000 shares held by an IRA, 30,217 shares in a 401(k), and 3,382 shares in an ESOP. These positions are tied to retirement and employee plans rather than standard brokerage accounts.

Does the NB Bancorp Form 4 show any insider share sales by James J. White?

The Form 4 does not report any share sales by James J. White. It records one acquisition of 6,874 restricted shares and other entries reflecting holdings in retirement and employee plans, noted as transactions not required under Section 16 reporting rules.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/27/2026 - 11:17 AM EST Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

White James J.

(Last) (First) (Middle)

1063 GREAT PLAIN AVE

(Street)

NEEDHAM MA 02492

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NB Bancorp, Inc. [ NBBK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Administrative Offc

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/25/2026		A		6,874(1)	A	$0	16,874	D
Common Stock								10,000	I	By IRA
Common Stock								30,217(2)	I	By 401(k)
Common Stock								3,382(2)	I	By ESOP

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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

2. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Act of 1934, as amended.

	/s/ Steven Lanter, pursuant to power of attorney	02/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.