Northfield Bancorp, Inc. — Director's Dealing 2017

May 3, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Northfield Bancorp, Inc. (NFBK)
CIK: 0001493225
Period of Report: 2017-05-03

Reporting Person: Klein Steven M (Director, President & COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-03	Common Stock	S	25000	$18.12	Disposed	301400	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	47457.9231	Indirect
Common Stock	29967.4252	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Options	$7.085	2019-01-30	Common Stock (217730.0)	217730	Direct
Stock Options	$14.76	2025-05-27	Common Stock (135000.0)	135000	Direct
Stock Options	$13.13	2024-06-11	Common Stock (278000.0)	278000	Direct

Footnotes

F1: The price reported in column 4 is a weighted average price. The shares were sold at prices ranging from $18.10 to $18.20, 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.

F2: Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended.