Northfield Bancorp (NFBK) director adds 10,000 shares in open-market buy

Rhea-AI Filing Summary

Northfield Bancorp, Inc. director Paul Stahlin reported an open-market purchase of 10,000 shares of common stock on March 17, 2026 at a weighted average price of $13.19 per share. According to the disclosure, the shares were purchased at prices ranging from $13.13 to $13.20.

After this transaction, Stahlin directly owns 54,354 shares of common stock. He also holds restricted stock units tied to 4,383 underlying shares of common stock, with each unit representing a contingent right to receive cash equal to the value of one share on the vesting date. The award vests one year from the grant date.

Insider Trade Summary

Net Buyer: 10,000 shares ($131,900)

Net Buy 2 txns

Insider Stahlin Paul

Role Director

Bought 10,000 shs ($132K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	10,000	$13.19	$132K
holding	Restricted Stock Units	--	--	--

Holdings After Transaction: Common Stock — 54,354 shares (Direct); Restricted Stock Units — 4,383 shares (Direct)

Footnotes (1)

1. The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $13.13 to $13.20, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4. Each restricted stock unit represents a contingent right to receive cash equal to the value of one share of Issuer common stock on date of vesting. Award vests one year from the date of grant.

Form 4 Insider Transactions: What Each Field Means →

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^*

Stahlin Paul

(Last) (First) (Middle)

581 MAIN STREET, SUITE 810

(Street)

WOODBRIDGE NEW JERSEY 07095

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Northfield Bancorp, Inc. [ NFBK ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

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

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

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

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	03/17/2026		P		10,000	A	$13.19(1)	54,354	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
Restricted Stock Units	(2)							(3)	(3)	Common Stock	4,383		4,383	D

Explanation of Responses:

1. The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $13.13 to $13.20, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

2. Each restricted stock unit represents a contingent right to receive cash equal to the value of one share of Issuer common stock on date of vesting.

3. Award vests one year from the date of grant.

Remarks:

	/s/ William R. Jacobs, pursuant to Power of Attorney	03/19/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Northfield Bancorp (NFBK) director Paul Stahlin report?

Director Paul Stahlin reported buying 10,000 Northfield Bancorp common shares in an open-market transaction. The purchase occurred on March 17, 2026 at a weighted average price of $13.19 per share, with individual trade prices ranging from $13.13 to $13.20.

At what price did Paul Stahlin buy Northfield Bancorp (NFBK) shares?

Paul Stahlin’s 10,000-share purchase was executed at a weighted average price of $13.19 per share. Footnote disclosure states the trades occurred within a price range of $13.13 to $13.20 per share, with full trade-level detail available upon request.

How many Northfield Bancorp (NFBK) shares does Paul Stahlin own after this Form 4?

Following the reported purchase, Paul Stahlin directly owns 54,354 shares of Northfield Bancorp common stock. In addition, he holds restricted stock units linked to 4,383 underlying common shares, which provide a contingent cash value based on the share price at vesting.

What restricted stock units does Paul Stahlin hold at Northfield Bancorp (NFBK)?

Paul Stahlin holds restricted stock units corresponding to 4,383 underlying Northfield Bancorp common shares. Each unit represents a contingent right to receive cash equal to one share’s value on the vesting date, with the award scheduled to vest one year from the grant date.

Is Paul Stahlin’s Northfield Bancorp (NFBK) transaction a market purchase or award?

The Form 4 shows an open-market purchase of 10,000 common shares by director Paul Stahlin. Separately, it reports his existing restricted stock unit holdings, which are a compensation award that vests over time and settles in cash based on the share value.