0001185185-26-003758 Sample Contracts

UNDERWRITING AGREEMENT between SOUTHPORT ACQUISITION CORP. II and COHEN & COMPANY CAPITAL MARKETS, A DIVISION OF COHEN & COMPANY SECURITIES, LLC as Representative of the Underwriters Dated: [●], 2026 UNDERWRITING AGREEMENT
Underwriting Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

The undersigned, Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), hereby confirms its agreement with Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC (the “Representative”), and with the other underwriters named on Schedule A hereto (if any), for which the Representative is acting as representative (the Representative and such other underwriters being collectively referred to herein as the “Underwriters” and, each underwriter individually, as an “Underwriter,” provided that, if only the Representative is listed on such Schedule A, any references to Underwriters shall refer exclusively to the Representative) as follows:

REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of [ ], 2026, is made and entered into by and among Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), and Southport Acquisition Sponsor II LLC, a Delaware limited liability company (the “Sponsor”), Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC (the “Representative”), and the undersigned parties listed under Holder on the signature pages hereto (together with any person or entity who hereafter becomes a party to this Agreement pursuant to Section 5.2 of this Agreement, a “Holder” and collectively the “Holders”).

INVESTMENT MANAGEMENT TRUST AGREEMENT
Investment Management Trust Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks

This Investment Management Trust Agreement (this “Agreement”) is made effective as of [ ], 2026 by and between Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation (the “Trustee”).

Southport Acquisition Corp. II Greenwich, CT 06830
Underwriting Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks

This letter (this “Letter Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into by and among Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”) and Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC, as representative (the “Representative”, or “CCM”) of the underwriters (the “Underwriters”), relating to an underwritten initial public offering (the “Public Offering”), of up to 23,000,000 of the Company’s units (including up to 3,000,000 units which may be purchased to cover over-allotments, if any) (the “Units”), each unit comprised of one Class A ordinary share, par value $0.0001 per share, of the Company (the “Class A Ordinary Shares”) and one-third of one redeemable warrant (each whole warrant, a “Warrant”). Each Warrant entitles the holder thereof to purchase one Class A Ordinary Share at a price of $11.50 per share, subject to adjustment. The Units sh

WARRANT AGREEMENT
Warrant Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

THIS WARRANT AGREEMENT (this “Agreement”), dated as of [ ], 2026, is by and between Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (in such capacity, the “Warrant Agent,” and also referred to herein as the “Transfer Agent”).

INDEMNITY AGREEMENT
Indemnity Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of [ ], 2026, by and between Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), and the undersigned (“Indemnitee”).

Southport Acquisition Corp. II
Securities Subscription Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

Southport Acquisition Corp. II, a Cayman Islands exempted company limited by shares (the “Company”), is pleased to accept the offer of Southport Acquisition Sponsor II LLC, a Delaware limited liability company (the “Subscriber” or “you”), has made to subscribe for 7,666,667 Class B ordinary shares US$0.0001 par value per share of the Company (the “Shares”), (the “Class B Ordinary Shares”), up to 1,000,000 of which are subject to complete or partial forfeiture by you to the extent the underwriters of the Company’s initial public offering (“IPO”) of units do not fully exercise their over-allotment option (the “Over-allotment Option”). For the purposes of this Agreement, references to “Ordinary Shares” are to, collectively, the Class B Ordinary Shares and the Company’s Class A ordinary shares, US$0.0001 par value per share (the “Class A Ordinary Shares”). Pursuant to the Company’s memorandum and articles of association (as may be amended, the “Articles”), Class B Ordinary Shares will conv

PRIVATE PLACEMENT UNITS PURCHASE AGREEMENT
Private Placement Units Purchase Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

This PRIVATE PLACEMENT UNITS PURCHASE AGREEMENT (this “Agreement”) is made as of the [ ] day of [ ], 2026, by and between Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”) and Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC (the “Subscriber”).

PRIVATE PLACEMENT UNITS PURCHASE AGREEMENT
Private Placement Units Purchase Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks • New York

THIS PRIVATE PLACEMENT UNITS PURCHASE AGREEMENT, dated as of [ ], 2026 (as it may from time to time be amended, this “Agreement”), is entered into by and between Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), and Southport Acquisition Sponsor II LLC, a Delaware limited liability company (the “Purchaser”).

Southport Acquisition Corp. II
Administrative Services Agreement • August 28th, 2026 • Southport Acquisition Corp. II • Blank checks

This letter agreement by and between Southport Acquisition Corp. II (the “Company”) and the Company’s sponsor, Southport Acquisition Sponsor II LLC (the “Service Provider”), dated as of the date hereof, will confirm our agreement that, commencing on the date the securities of the Company are first listed on the New York Stock Exchange (the “Listing Date”), pursuant to a Registration Statement on Form S-1 and prospectus filed with the U.S. Securities and Exchange Commission (the “Registration Statement”) and continuing until the earlier of the consummation by the Company of an initial business combination and the Company’s liquidation (in each case as described in the Registration Statement) (such earlier date hereinafter referred to as the “Termination Date”):