APPENDIX A OUTLINE OF RECORDS MANAGEMENT AGENT SERVICES

Exhibit 1.1

June 6, 2012

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

581 Main Street

Suite 810

Woodbridge, New Jersey 07095

Ladies and Gentlemen:

We understand that the Board of Trustees of Northfield Bancorp, MHC (“MHC”) and the Boards of Directors of the MHC’s subsidiaries, Northfield Bancorp, Inc. (“Northfield Bancorp”) and Northfield Bank (the “Bank”), are considering the adoption of a Plan of Conversion and Reorganization (the “Plan”) pursuant to which the Company will be converted from mutual holding company to stock holding company form, and all of the shares of Northfield Bancorp currently outstanding (other than shares held by the MHC) will be exchanged for shares of common stock of a successor stock holding company to be formed in connection with the reorganization (the “Holding Company”). Concurrently with the reorganization, the Holding Company also intends to offer and sell certain shares of common stock (the “Shares”) in a public offering. The MHC, Northfield Bancorp, the Holding Company and the Bank are sometimes collectively referred to herein as the “Company” and their respective Boards of Trustees/Directors are collectively referred to herein as the “Board.”

Under the terms of the Plan and applicable regulations, the Shares will be offered first to eligible members of the MHC and the Company’s tax-qualified employee stock benefit plans in a Subscription Offering and, concurrently and subject to the prior rights of eligible members, to the public in a Direct Community Offering (collectively, the “Subscription and Direct Community Offering”), with a preference given in the Direct Community Offering to Northfield Bancorp’s existing stockholders and residents of the Bank’s community. Shares not subscribed for in the Subscription and Direct Community Offering will be offered to the general public in a Syndicated Offering on a best efforts or underwritten basis (the “Syndicated Offering” and together with the Subscription and Direct Community Offering, the “Offering”). Sandler O’Neill & Partners, L.P. (“Sandler O’Neill”) is pleased to assist the Company with the Offering and this letter is to confirm the terms and conditions of our engagement.

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 2

Services

Sandler O’Neill will work with the Company and its management, counsel, accountants and other advisors in preparing for and completing the Offering and anticipate that our services will include the following:

Sandler O’Neill will act as exclusive marketing agent for the Company in the Subscription and Direct Community Offering and will serve as lead joint book-running manager of the Syndicated Offering. The Company has advised Sandler O’Neill that it expects Jeffries & Company, Inc. and Stifel, Nicolas & Company, Inc. to serve as joint book-running managers of the Syndicated Offering (the “Joint Book-Runners”) and up to two additional broker-dealers to serve as co-managers of the Syndicated Offering (the “Co-managers,” and together with Sandler O’Neill and the Joint Book-Runners, the “Syndicate Member Firms”). It is understood that no Syndicate Member Firm shall be obligated to take or purchase any Shares in the Offering other than as may be expressly agreed to by such firms and the Company in an underwriting agreement for a firm commitment Syndicated Offering.

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 3

Fees

If the Offering is consummated, the Company agrees to pay Sandler O’Neill for its marketing agent services a fee of 1.00% of the aggregate Actual Purchase Price of all Shares sold in the Subscription and Direct Community Offering, excluding Shares purchased by or on behalf of (i) any employee benefit plan or trust of the Company established for the benefit of its directors, officers and employees, and (ii) any director, officer or employee of the Company or members of their immediate families (whether directly or through a personal trust) ((i) and (ii) collectively, “Insider Purchases”); provided, however, that in the event that greater than 10% of the total Shares offered in the Offering are sold in the Subscription and Direct Community Offering (exclusive of Insider Purchases), the Company shall pay an additional fee to Sandler O’Neill of 2.00% of the aggregate Actual Purchase Price of all Shares sold in the Subscription and Direct Community Offering in excess of the 10% threshold. For the avoidance of doubt, it is understood and agreed that no fee shall be payable to Sandler O’Neill in respect of any Insider Purchases.

With respect to any Shares sold in the Syndicated Offering, the Company agrees to pay to the Syndicate Member Firms a fee of 5.00% of the aggregate Actual Purchase Price of all Shares sold in the Syndicated Offering, which is expected to comprise (a) a management fee of 1.00% of the aggregate Actual Purchase Price of all Shares sold in the Syndicated Offering, of which 45% shall be paid to Sandler O’Neill, 25% shall be paid to each Joint Book-Runner and 2.5% shall be paid to each Co-manager, and (b) a selling concession and, if applicable, an underwriting fee, totaling in the aggregate 4.00% of the aggregate Actual Purchase Price of all Shares sold in the Syndicated Offering, of which 30% shall be paid to Sandler O’Neill, 30% shall be paid to each Joint Book-Runner and 5% shall be paid to each Co-manager.

For purposes of this letter, the term “Actual Purchase Price” shall mean the price at which the shares of the Company’s common stock are sold in the Offering. It is understood and agreed that no fee shall be paid with respect to any shares issued to minority stockholders in exchange for their current shares as a result of the reorganization. All fees payable hereunder shall be payable in immediately available funds by wire transfer at the time of the closing of the Offering.

Expenses

If the Offering is consummated, the Syndicate Member Firms shall bear all of their out-of-pocket expenses incurred in connection with the Offering, including fees and disbursements of their legal counsel. If the Offering is not consummated, the Company agrees to reimburse

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 4

Sandler O’Neill for the reasonable fees and disbursements of legal counsel for Sandler O’Neill and the other Syndicate Member Firms, up to a maximum of $150,000; provided, however, that such expenses shall be documented to the reasonable satisfaction of the Company. Any such expense reimbursement shall be payable in cash upon the termination of Sandler O’Neill’s engagement hereunder or termination of the Offering, as the case may be. The provisions of this paragraph are not intended to apply to or in any way impair the indemnification provisions of this letter.

As is customary, the Company will bear all other expenses incurred in connection with the Offering, including, without limitation, (a) the cost of obtaining all securities and bank regulatory approvals, including any required FINRA filing fees; (b) the cost of printing and distributing the offering materials; (c) the costs of blue sky qualification (including fees and expenses of blue sky counsel) of the Shares in the various states; (d) listing fees; and (e) all fees and disbursements of the Company’s counsel, accountants and other advisors. In the event Sandler O’Neill incurs any such fees and expenses on behalf of the Company, the Company will reimburse Sandler O’Neill for such fees and expenses whether or not the Offering is consummated.

Due Diligence Review

Sandler O’Neill’s obligation to perform the services contemplated by this letter shall be subject to the satisfactory completion of such investigation and inquiries relating to the Company and its directors, officers, agents and employees as Sandler O’Neill and its counsel in their sole discretion may deem appropriate under the circumstances. In this regard, the Company agrees that, at its expense, it will make available to Sandler O’Neill all information reasonably requested, and will allow Sandler O’Neill the opportunity to discuss with the Company’s management the financial condition, business and operations of the Company, and will afford a similar opportunity to the other Syndicate Member Firms. The Company acknowledges that Sandler O’Neill and the other Syndicate Member Firms will rely upon the accuracy and completeness of all information received from the Company and its directors, officers, employees, agents, independent accountants and counsel.

Blue Sky Matters

Sandler O’Neill and the Company agree that the Company’s counsel shall serve as counsel with respect to blue sky matters in connection with the Offering. The Company shall cause such counsel to prepare a Blue Sky Memorandum related to the Subscription and Direct

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 5

Community Offering and, as necessary, the Syndicated Offering, including Sandler O’Neill’s and, as applicable, the other Syndicate Member Firms’ participation therein, and shall furnish Sandler O’Neill a copy thereof addressed to Sandler O’Neill and, as applicable, the other Syndicate Member Firms, or upon which such counsel shall state Sandler O’Neill and, as applicable, the other Syndicate Member Firms, may rely.

Confidentiality

Except as contemplated in connection with the performance of its services under this agreement, as authorized by the Company or as required by law, regulation or legal process, Sandler O’Neill agrees that it will treat as confidential all material, non-public information relating to the Company obtained in connection with its engagement hereunder (the “Confidential Information”); provided, however, that Sandler O’Neill may disclose such Confidential Information to its agents, consultants and advisors who are assisting or advising Sandler O’Neill in performing its services hereunder and to any other Syndicate Member Firm, provided they have agreed to be bound by the terms and conditions of this paragraph. As used in this paragraph, the term “Confidential Information” shall not include information which (a) is or becomes generally available to the public other than as a result of a disclosure by Sandler O’Neill, (b) was available to Sandler O’Neill on a non-confidential basis prior to its disclosure to Sandler O’Neill by the Company, or (c) becomes available to Sandler O’Neill on a non-confidential basis from a person other than the Company who is not otherwise known to Sandler O’Neill, upon due inquiry, to be bound not to disclose such information pursuant to a contractual, legal or fiduciary obligation.

Indemnification

The Company agrees to indemnify and hold Sandler O’Neill, its affiliates and their respective partners, directors, officers, employees, agents and controlling persons within the meaning of Section 15 of the Securities Act of 1933 or Section 20 of the Securities Exchange Act of 1934 (each such firm and person being an “Indemnified Party”) harmless from and against any and all losses, claims, damages and liabilities, joint or several, to which such Indemnified Party may become subject under applicable federal or state law, or otherwise, related to or arising out of the Offering or the engagement of Sandler O’Neill pursuant to, or the performance by Sandler O’Neill of the services contemplated by, this letter, and will reimburse any Indemnified Party for all expenses (including reasonable legal fees and expenses) as they are incurred, including expenses incurred in connection with the investigation of, preparation for or defense of any pending or threatened claim or any action or proceeding arising therefrom,

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 6

whether or not such Indemnified Party is a party; provided, however, that the Company shall only be obligated to pay for one separate counsel (in addition to any required local counsel) in any one action or proceeding or group of related actions or proceedings for all Indemnified Parties collectively, and provided further that the Company will not be liable in any such case to the extent that any such loss, claim, damage, liability or expense (a) arises out of or is based upon any untrue statement of a material fact or the omission of a material fact required to be stated therein or necessary to make not misleading any statements contained in any final prospectus, or any amendment or supplement thereto, made in reliance on and in conformity with written information furnished to the Company by Sandler O’Neill expressly for use therein, or (b) is primarily attributable to the gross negligence, willful misconduct or bad faith of Sandler O’Neill. If the foregoing indemnification is unavailable for any reason other than for the reasons stated in subparagraph (a) or (b) above, the Company agrees to contribute to such losses, claims, damages, liabilities and expenses in the proportion that its financial interest in the Offering bears to that of Sandler O’Neill. The provisions of any agency agreement or underwriting agreement entered into in connection with the Syndicated Offering shall also extend to the other Syndicate Member Firms.

The Company agrees to notify Sandler O’Neill promptly of the assertion against it or any other person of any claim or the commencement of any action or proceeding relating to any transaction contemplated by this agreement.

Miscellaneous

Sandler O’Neill and the Company agree that (a) except as set forth in clause (b) below, the foregoing represents the general intention of the Company and Sandler O’Neill with respect to the services to be provided by Sandler O’Neill in connection with the Offering, which will serve as a basis for Sandler O’Neill commencing activities, and (b) the only legal and binding obligations of the Company and Sandler O’Neill with respect to the Offering shall be (i) the obligations set forth under the captions “Expenses,” “Confidentiality” and “Indemnification,” and (ii) as set forth in a duly negotiated and executed definitive Agency Agreement to be entered into prior to the commencement of the Subscription and Community Offering, and, if applicable, a duly negotiated and executed Underwriting Agreement to be entered into prior to the commencement of an underwritten Syndicated Offering. Such Agency Agreement and, as applicable, Underwriting Agreement, shall be in form and content satisfactory to Sandler O’Neill and the Company and their respective counsel and shall contain standard indemnification and contribution provisions consistent herewith.

Sandler O’Neill’s execution of such Agency Agreement and, as applicable, Underwriting Agreement shall also be subject to (i) Sandler O’Neill’s satisfaction with its investigation of the

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 7

Company’s business, financial condition and results of operations, (ii) preparation of offering materials that are satisfactory to Sandler O’Neill, (iii) compliance with all relevant legal and regulatory requirements to the reasonable satisfaction of Sandler O’Neill, (iv) agreement that the price established by the independent appraiser is reasonable, and (v) market conditions at the time of the proposed offering.

This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and can be altered only by written consent signed by the parties. This Agreement shall be construed and enforced in accordance with the laws of the State of New York, without regard to the conflicts of laws principles thereof.

Please confirm that the foregoing correctly sets forth our agreement by signing and returning to Sandler O’Neill the duplicate copy of this letter enclosed herewith.

Accepted and agreed to as of

the date first written above:

June 6, 2012

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

581 Main Street

Suite 810

Woodbridge, New Jersey 07095

Dear Mr. Klein:

Sandler O’Neill & Partners, L.P. (“Sandler O’Neill”) is pleased to act as records management agent (“Records Agent”) for Northfield Bancorp, MHC (the “MHC”), Northfield Bancorp, Inc. (together with any successor stock holding company, the “Holding Company”) and Northfield Bank (the “Bank”) in connection with the offer and sale of certain shares of the common stock of the Holding Company to the Bank's eligible account holders in a Subscription Offering and to members of the Bank’s community in a Direct Community Offering (collectively, the “Offering”) pursuant to the terms of the Plan of Reorganization adopted by the Boards of Directors of the MHC, the Holding Company and the Bank on June 6, 2012 (including any subsequent amendments, the “Plan”). The MHC, the Holding Company and the Bank are sometimes collectively referred to herein as the “Company.” This letter is to confirm the terms and conditions of our engagement.

SERVICES AND FEES

In our role as Records Agent, we anticipate that our services will include the services outlined below, each as may be necessary and as the Company may reasonably request:

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 9

Each of these services is further described in Appendix A to this agreement.

For its services hereunder, the Company agrees to pay Sandler O’Neill a fee of $50,000. This fee is based upon the requirements of current regulations and the Plan as currently contemplated. Any unusual or additional items or duplication of service required as a result of a material change in the regulations or the Plan or a material delay or other similar events may result in extra charges that will be covered in a separate agreement if and when they occur. All fees under this agreement shall be payable in cash, as follows: (a) $25,000 payable upon execution of this agreement, which shall be non-refundable; and (b) the balance upon the completion of the Offering.

COSTS AND EXPENSES

In addition to any fees that may be payable to Sandler O’Neill hereunder, the Company agrees to reimburse Sandler O’Neill, upon request made from time to time, for its reasonable out-of-pocket expenses incurred in connection with its engagement hereunder, regardless of whether the Offering is consummated, including, without limitation, travel, lodging, meals, telephone, postage, community meeting expenses and other similar expenses, up to a maximum of $50,000. It is understood that all expenses associated with the establishment and operation of the Conversion Center (e.g., postage, telephones, supplies, temporary employees, etc.) will be borne by the Company. The provisions of this paragraph are not intended to apply to or in any way impair the indemnification provisions of this agreement.

RELIANCE ON INFORMATION PROVIDED

The Company will furnish Sandler O’Neill with such information as Sandler O’Neill reasonably believes appropriate to its assignment (all such information so furnished being the “Records”). The Company recognizes and confirms that Sandler O’Neill (a) will use and rely primarily on the Records without having independently verified the same, and (b) does not assume responsibility for the accuracy or completeness of the Records.

LIMITATIONS

Sandler O’Neill, as Records Agent hereunder, (a) shall have no duties or obligations other than those specifically set forth herein; (b) will be regarded as making no representations and having no responsibilities as to the validity, sufficiency, value or genuineness of any order form or any stock certificates or the shares represented thereby, and will not be required to and will make no representations as to the validity, value or genuineness of the offer; (c) shall not be liable to any person, firm or corporation including the Company by reason of any error of

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 10

judgment or for any act done by it in good faith, or for any mistake of law or fact in connection with this agreement and the performance hereof unless caused by or arising out of its own willful misconduct, bad faith or gross negligence; (d) will not be obliged to take any legal action hereunder which might in its judgment involve any expense or liability, unless it shall have been furnished with reasonable indemnity satisfactory to it; and (e) may rely on and shall be protected in acting in reliance upon any certificate, instrument, opinion, notice, letter, telex, telegram, or other document or security delivered to it and in good faith believed by it to be genuine and to have been signed by the proper party or parties.

INDEMNIFICATION

The Company agrees to indemnify and hold Sandler O’Neill and its affiliates and their respective partners, directors, officers, employees, agents and controlling persons (Sandler O’Neill and each such person being an “Indemnified Party”) harmless from and against any and all losses, claims, damages and liabilities, joint or several, to which such Indemnified Party may become subject under applicable federal or state law, or otherwise, related to or arising out of the engagement of Sandler O’Neill pursuant to, and the performance by Sandler O’Neill of the services contemplated by, this letter, and will reimburse any Indemnified Party for all expenses (including reasonable counsel fees and expenses) as they are incurred, including expenses incurred in connection with the investigation of, preparation for or defense of any pending or threatened claim or any action or proceeding arising therefrom, whether or not such Indemnified Party is a party. The Company will not be liable under the foregoing indemnification provision to the extent that any loss, claim, damage, liability or expense is found in a final judgment by a court of competent jurisdiction to have resulted primarily from Sandler O’Neill’s willful misconduct, bad faith or gross negligence.

MISCELLANEOUS

The following addresses shall be sufficient for written notices to each other:

Northfield Bancorp, MHC

Northfield Bancorp, Inc.

Northfield Bank

June 6, 2012

Page 11

The Agreement and appendix hereto constitute the entire Agreement between the parties with respect to the subject matter hereof and can be altered only by written consent signed by the parties. This Agreement is governed by the laws of the State of New York.

Please confirm that the foregoing correctly sets forth our agreement by signing and returning to Sandler O’Neill the duplicate copy of this letter enclosed herewith.

APPENDIX A

OUTLINE OF RECORDS MANAGEMENT AGENT SERVICES

A - 1