ACABU Atlantic Coastal Acquisition Corporation II

Principal. The principal balance of this Note shall be payable promptly after the date on which the Maker consummates an initial business combination (a “Business Combination”) with a target business (as described in the Maker’s initial public offering prospectus dated January 13, 2022 (the “Prospectus”)). The principal balance may be prepaid at any time.

Interest. No interest shall accrue on the unpaid principal balance of this Note.

Conversion Right. If the Maker consummates a Business Combination, the Payee may elect to convert all or a portion of the principal balance of this Note into Series A common stock of the Maker at a price equal to $10.20 per share.

Application of Payments. All payments shall be applied first to payment in full of any costs incurred in the collection of any sum due under this Note, including (without limitation) reasonable attorney’s fees, then to the payment in full of any late charges and finally to the reduction of the unpaid principal balance of this Note.

Events of Default. The following shall constitute an event of default (“Event of Default”):

Failure to Make Required Payments. Failure by the Maker to pay the principal of this Note within five (5) business days following the date when due.

Voluntary Liquidation, Etc. The commencement by the Maker of a proceeding relating to its bankruptcy, insolvency, reorganization, rehabilitation or other similar action, or the consent by it to the appointment of, or taking possession by, a receiver, liquidator, assignee, trustee, custodian, sequestrator (or other similar official) for the Maker or for any substantial part of its property, or the making by it of any assignment for the benefit of creditors, or the failure of the Maker generally to pay its debts as such debts become due, or the taking of corporate action by the Maker in furtherance of any of the foregoing.

Involuntary Bankruptcy, Etc. The entry of a decree or order for relief by a court having jurisdiction in the premises in respect of the Maker in an involuntary case under any applicable bankruptcy, insolvency or similar law, for the appointing of a receiver, liquidator, assignee, custodian, trustee, sequestrator (or similar official) for the Maker or for any substantial part of its property, or ordering the winding-up or liquidation of the affairs of the Maker, and the continuance of any such decree or order unstayed and in effect for a period of 60 consecutive days.

Remedies.

Upon the occurrence of an Event of Default specified in Section 5(a) hereof, the Payee may, by written notice to the Maker, declare this Note to be due immediately and payable, whereupon the unpaid principal amount of this Note, and all other amounts payable hereunder, shall become immediately due and payable without presentment, demand, protest or other notice of any kind, all of which are hereby expressly waived, anything contained herein or in the documents evidencing the same to the contrary notwithstanding.

Upon the occurrence of an Event of Default specified in Sections 5(b) and 5(c), the unpaid principal balance of this Note, and all other sums payable with regard to this Note, shall automatically and immediately become due and payable, in all cases without any action on the part of the Payee.

Waivers. The Maker and all endorsers and guarantors of, and sureties for, this Note waive presentment for payment, demand, notice of dishonor, protest, and notice of protest with regard to the Note, all errors, defects and imperfections in any proceedings instituted by the Payee under the terms of this Note.

Unconditional Liability. The Maker hereby waives all notices in connection with the delivery, acceptance, performance, default, or enforcement of the payment of this Note, and agrees that its liability shall be unconditional, without regard to the liability of any other party, and shall not be affected in any manner by any indulgence, extension of time, renewal, waiver or modification granted or consented to by the Payee, and consents to any and all extensions of time, renewals, waivers, or modifications that may be granted by the Payee with respect to the payment or other provisions of this Note, and agrees that additional makers, endorsers, guarantors, or sureties may become parties hereto without notice to the Maker or affecting the Maker’s liability hereunder.

Notices. Any notice called for hereunder shall be deemed properly given if (i) sent by certified mail, return receipt requested, (ii) personally delivered, (iii) dispatched by any form of private or governmental express mail or delivery service providing receipted delivery or (iv) sent by facsimile or (v) to the following addresses or to such other address as either party may designate by notice in accordance with this Section:

Construction. THIS NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICT OF LAW PROVISIONS THEREOF.

Jurisdiction. The courts of the State of New York have exclusive jurisdiction to settle any dispute arising out of or in connection with this agreement (including a dispute relating to any non-contractual obligations arising out of or in connection with this agreement) and the parties submit to the exclusive jurisdiction of the courts of New York.

Severability. Any provision contained in this Note which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.

Trust Waiver. The Payee has been provided a copy of the Prospectus. Notwithstanding anything herein to the contrary, the Payee hereby waives any and all right, title, interest or claim of any kind (“Claim”) in or to any amounts contained in the trust account in which the proceeds of the initial public offering (the “IPO”) conducted by the Maker and the proceeds of the sale of securities in a private placement that occurred prior to the effectiveness of the IPO, as described in greater detail in the Prospectus, were placed, and hereby agrees not to seek recourse, reimbursement, payment or satisfaction for any Claim from the trust account or any distribution therefrom for any reason whatsoever. If the Maker does not consummate a Business Combination, this Note shall be repaid only from amounts remaining outside of the trust account, if any, or will be forfeited, eliminated, or otherwise forgiven.

Amendment; Waiver. Any amendment hereto or waiver of any provision hereof may be made with, and only with, the written consent of the Maker and the Payee.

Assignment. No assignment or transfer of this Note or any rights or obligations hereunder may be made by any party hereto (by operation of law or otherwise) without the prior written consent of the other party hereto and any attempted assignment without the required consent shall be void.

Further Assurance. The Maker shall, at its own cost and expense, execute and do (or procure to be executed and done by any other necessary party) all such deeds, documents, acts and things as the Payee may from time to time require as may be necessary to give full effect to this Note.

By:

/s/ Shahraab Ahmad

Name: Shahraab Ahmad

Title: Managing Member