Southport Acquisition Corp. II

Item 1.01. Entry into a Material Definitive Agreement. On September 30, 2026, the registration statement on Form S-1 (File No. 333-298104; the “Registration Statement”) relating to the initial public offering (the “IPO”) of Southport Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), was declared effective by the U.S. Securities and Exchange Commission (the “Commission”). On October 2, 2026, the Company consummated its IPO of 21,000,000 units (the “Units”), including 1,000,000 Units issued pursuant to the partial exercise by the underwriters of their over-allotment option. The Units were sold at a price of $10.00 per Unit, generating gross proceeds to the Company of $210,000,000. Each Unit consists of one Class A ordinary share of the Company, par value $0.0001 per share (the “Class A Ordinary Shares”), and one-half of one redeemable warrant of the Company (each whole warrant, a “Warrant”), with each whole Warrant entitling the holder thereof to purchase one Class A Ordinary Share for $11.50 per share. In connection with the IPO, the Company entered into the following agreements, forms of which were previously filed as exhibits to the Company’s Registration Statement: An Underwriting Agreement, dated September 30, 2026, by and between the Company and Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC, as representative of the several underwriters (the “Representative”), a copy of which is attached as Exhibit 1.1 hereto and incorporated herein by reference. A Warrant Agreement, dated September 30, 2026, by and between the Company and Continental Stock Transfer & Trust Company, as warrant agent, a copy of which is attached as Exhibit 4.1 hereto and incorporated herein by reference. An Investment Management Trust Agreement, dated September 30, 2026, by and between the Company and Continental Stock Transfer & Trust Company, as trustee, a copy of which is attached as Exhibit 10.1 hereto and incorporated herein by reference. A Registration Rights Agreement, dated September 30, 2026, by and among the Company and certain security holders, a copy of which is attached as Exhibit 10.2 hereto and incorporated herein by reference. A Private Placement Units Purchase Agreement, dated September 30, 2026 (the “Sponsor Private Placement Units Purchase Agreement”), by and between the Company and Southport Acquisition Sponsor II LLC, a Delaware limited liability company (the “Sponsor”), a copy of which is attached as Exhibit 10.3 hereto and incorporated herein by reference. A Private Placement Units Purchase Agreement, dated September 30, 2026 (the “Underwriters Private Placement Units Purchase Agreement”), by and between the Company and the Representative, a copy of which is attached as Exhibit 10.4 hereto and incorporated herein by reference. A Letter Agreement, dated September 30, 2026 (the “Letter Agreement”), by and among the Company, its officers, its directors and the Sponsor, a copy of which is attached as Exhibit 10.5 hereto and incorporated herein by reference. An Administrative Services Agreement, dated September 30, 2026, by and between the Company and the Sponsor, a copy of which is attached as Exhibit 10.6 hereto and incorporated herein by reference. Indemnity Agreements, dated September 30, 2026 (each, an “Indemnity Agreement”), by and among the Company and each director and executive officer of the Company, a form of which is attached as Exhibit 10.7 hereto and incorporated herein by reference. The material terms of such agreements are fully described in the Company’s final prospectus, dated September 30, 2026, as filed with the Commission on October 2, 2026 (the “Prospectus”), and are incorporated herein by reference.

Item 3.02. Unregistered Sales of Equity Securities. Simultaneously with the closing of the IPO, pursuant to the Sponsor Private Placement Units Purchase Agreement and the Underwriters Private Placement Units Purchase Agreement, the Company completed the private sale of an aggregate of 770,000 units (the “Private Placement Units”) to the Sponsor and the Representative, with each Private Placement Unit consisting of one Class A Ordinary Share and one-half of one redeemable Warrant exercisable to purchase one Class A Ordinary Share at $11.50 per share, at a price of $10.00 per Private Placement Unit, or $7,700,000 in the aggregate. Of the 770,000 Private Placement Units, the Sponsor purchased 500,000 Private Placement Units and the Representative purchased 270,000 Private Placement Units. The Private Placement Units (and underlying securities) are identical to the Units sold in the IPO, except as otherwise disclosed in the Registration Statement. No underwriting discounts or commissions were paid with respect to such sale. The issuance of the Private Placement Units was made pursuant to the exemption from registration contained in Section 4(a)(2) of the Securities Act of 1933, as amended.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On October 1, 2026, in connection with the IPO, Jared Stone, Matthew Hansen, David Winfield, Cathleen Schriner-Gates, John Aslanian and Robert Katz (collectively with Jeb Spencer, the “Directors”) were appointed to the board of directors of the Company (the “Board”) upon the commencement of trading of the Company’s Units on the New York Stock Exchange. Jared Stone, Matthew Hansen, David Winfield, John Aslanian and Robert Katz are independent directors. Effective October 1, 2026, each of Mr. Stone, Mr. Winfield and Mr. Aslanian were appointed to the Board’s Audit Committee, with Mr. Stone serving as chair of the Audit Committee. Mr. Winfield and Mr. Katz were appointed to the Board’s Compensation Committee, with Mr. Winfield serving as chair of the Compensation Committee. Mr. Aslanian, Mr. Hansen and Mr. Winfield were appointed to the Board’s Nominating and Corporate Governance Committee, with Mr. Aslanian serving as chair of the Nominating and Corporate Governance Committee. Following the appointment of the Directors, the Board is comprised of three classes. The term of office of the first class of Directors, which consists of Messrs. Hansen, Winfield and Katz, will expire at the Company’s first annual general meeting of shareholders. The term of office of the second class of Directors, which consists of Ms. Schreiner-Gates and Mr. Aslanian, will expire at the Company’s second annual general meeting of shareholders. The term of office of the third class of Directors, which consists of Messrs. Spencer and Stone, will expire at the Company’s third annual general meeting of shareholders. On September 30, 2026, in connection with their appointments to the Board, each Director and the Company’s officers entered into the Letter Agreement as well as an Indemnity Agreement with the Company. Other than the foregoing, none of the Directors are party to any arrangement or understanding with any person pursuant to which they were appointed as Directors, nor are they party to any transactions required to be disclosed under Item 404(a) of Regulation S-K involving the Company. The foregoing descriptions of the Letter Agreement and the form of Indemnity Agreement do not purport to be complete and are qualified in their entireties by reference to the Letter Agreement and the form of Indemnity Agreement, copies of which are attached as Exhibits 10.5 and 10.7 hereto, respectively, and are incorporated herein by reference.

Item 5.03. Amendments to Certificate of Incorporation or Bylaws; Change in Fiscal Year. On October 1, 2026, in connection with the IPO, the Company filed its amended and restated memorandum and articles of association (the “Amended and Restated Memorandum and Articles of Association”) with the Cayman Islands Registrar of Companies, which was effective on September 30, 2026. The terms of the Amended and Restated Memorandum and Articles of Association are set forth in the Registration Statement and are incorporated herein by reference. The description of the Amended and Restated Memorandum and Articles of Association does not purport to be complete and is qualified in its entirety by reference to the Amended and Restated Memorandum and Articles of Association, a copy of which is attached as Exhibit 3.1 hereto and incorporated herein by reference. Item 8.01. Other Events. A total of $212,1000,000 of the proceeds from the IPO and the sale of the Private Placement Units was placed in a U.S.-based trust account maintained by Continental Stock Transfer & Trust Company, acting as trustee. Except with respect to interest earned on the funds in the trust account that may be released to the Company to pay its taxes and for winding up and dissolution expenses, the funds held in the trust account will not be released from the trust account until the earliest of (i) the completion of the Company’s initial business combination, (ii) the redemption of the Company’s public shares if it is unable to complete its initial business combination within 24 months from the closing of the IPO (or by such earlier liquidation date as the Company’s Board may approve), subject to applicable law, and (iii) the redemption of the Company’s public shares properly submitted in connection with a shareholder vote to amend the Company’s Amended and Restated Memorandum and Articles of Association to modify the substance or timing of its obligation to redeem 100% of the Company’s public shares if it has not consummated an initial business combination within 24 months from the closing of the IPO or with respect to any other material provisions relating to shareholders’ rights or pre-initial business combination activity. On September 30, 2026, the Company issued a press release announcing the pricing of the IPO, a copy of which is attached as Exhibit 99.1 to this Current Report on Form 8-K. On October 2, 2026, the Company issued a press release announcing the closing of the IPO, a copy of which is attached as Exhibit 99.2 to this Current Report on Form 8-K.

Item 8.01. Other Events. A total of $212,1000,000 of the proceeds from the IPO and the sale of the Private Placement Units was placed in a U.S.-based trust account maintained by Continental Stock Transfer & Trust Company, acting as trustee. Except with respect to interest earned on the funds in the trust account that may be released to the Company to pay its taxes and for winding up and dissolution expenses, the funds held in the trust account will not be released from the trust account until the earliest of (i) the completion of the Company’s initial business combination, (ii) the redemption of the Company’s public shares if it is unable to complete its initial business combination within 24 months from the closing of the IPO (or by such earlier liquidation date as the Company’s Board may approve), subject to applicable law, and (iii) the redemption of the Company’s public shares properly submitted in connection with a shareholder vote to amend the Company’s Amended and Restated Memorandum and Articles of Association to modify the substance or timing of its obligation to redeem 100% of the Company’s public shares if it has not consummated an initial business combination within 24 months from the closing of the IPO or with respect to any other material provisions relating to shareholders’ rights or pre-initial business combination activity. On September 30, 2026, the Company issued a press release announcing the pricing of the IPO, a copy of which is attached as Exhibit 99.1 to this Current Report on Form 8-K. On October 2, 2026, the Company issued a press release announcing the closing of the IPO, a copy of which is attached as Exhibit 99.2 to this Current Report on Form 8-K.