NB Bancorp, Inc. (NBBK) director receives 2,402 restricted stock award

Rhea-AI Filing Summary

NB Bancorp, Inc. director Angela Jackson reported receiving 2,402 shares of common stock as a stock award on January 2, 2026. The award was granted at a price of $0 per share, indicating a restricted stock grant rather than an open-market purchase. After this grant, Jackson beneficially owned 81,255 NB Bancorp shares directly.

According to the footnotes, the 2,402 restricted shares vest 100% on January 2, 2027. The total 81,255 shares also include restricted stock that vests 20% per year starting April 24, 2026, showing that a portion of her holdings is subject to multi-year vesting schedules.

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
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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^*

Jackson Angela

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

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	01/02/2026		A		2,402(1)	A	$0	81,255(2)	D

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 100% on January 2, 2027.

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

	/s/ Steven Lanter, pursuant to power of attorney	01/06/2026
	** 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.

FAQ

What insider transaction did NB Bancorp (NBBK) report for Angela Jackson?

NB Bancorp, Inc. reported that director Angela Jackson received 2,402 shares of common stock on January 2, 2026 as a stock award at $0 per share.

How many NB Bancorp (NBBK) shares does Angela Jackson hold after this Form 4?

Following the reported transaction, Angela Jackson beneficially owns 81,255 shares of NB Bancorp common stock, held directly.

What are the vesting terms of Angela Jackson’s new NB Bancorp restricted shares?

The 2,402 restricted shares granted to Angela Jackson vest 100% on January 2, 2027, according to the footnote.

Do Angela Jackson’s existing NB Bancorp (NBBK) holdings include other restricted stock?

Yes. The 81,255 shares include restricted stock that vests 20% per year beginning on April 24, 2026, as disclosed in the footnotes.

Was this NB Bancorp (NBBK) Form 4 transaction a purchase on the open market?

No. The Form 4 shows an “A” (acquired) transaction code at a price of $0 per share, indicating a stock award of restricted shares, not an open-market purchase.

Is Angela Jackson a director or officer of NB Bancorp (NBBK)?

Angela Jackson is reported as a director of NB Bancorp, Inc., and is not listed as an officer or 10% owner in this Form 4.