0001929980-26-000479 Sample Contracts

UNDERWRITING AGREEMENT
Underwriting Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks • New York

Southern Cross Acquisition II Corp., a Cayman Islands exempted company with limited liability (the “Company”), hereby confirms its agreement with D. Boral Capital LLC (the “Representative”), as representative of the several underwriters named on Schedule A hereto (the “Underwriters” or, each underwriter individually, an “Underwriter”), as follows:

WARRANT AGREEMENT
Warrant Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks

THIS WARRANT AGREEMENT (this “Agreement”), dated as of [•], 2026, is by and between Southern Cross Acquisition II Corp., a Cayman Islands exempted company (the “Company”), and VStock Transfer, LLC, as warrant agent (the “Warrant Agent” or also referred to herein as the “Transfer Agent”).

REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks • New York

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is entered into as of the [__], 2026, by and among Southern Cross Acquisition II Corp., a Cayman Islands company (the “Company”) and the undersigned parties listed under Investor on the signature page hereto (each, an “Investor” and collectively, the “Investors”).

INVESTMENT MANAGEMENT TRUST AGREEMENT
Investment Management Trust Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks

Pursuant to Section 1(k) of the Investment Management Trust Agreement between Southern Cross Acquisition II Corp. (the “Company”) and Equiniti Trust Company, LLC (the “Trustee”), dated as of [•], 20[•] (the “Trust Agreement”), the Company hereby requests that you deliver to the Company $[•] of the principal and interest income earned on the Property as of the date hereof. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement.

PRIVATE UNIT SUBSCRIPTION AGREEMENT BETWEEN THE REGISTRANT AND THE SPONSOR
Private Unit Subscription Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks
RIGHTS AGREEMENT
Rights Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks • New York

This Rights Agreement (this “Agreement”) is made as of [•], 2026 between Southern Cross Acquisition II Corp., an exempted company incorporated in the Cayman Islands with limited liability (the “Company”), and VStock Transfer, LLC, a California limited liability company, with office at 18 Lafayette, Woodmere, New York, NY 11598, as rights agent (the “Rights Agent”).

FORM OF LETTER AGREEMENT
Underwriting Agreement • August 19th, 2026 • Southern Cross Acquisition II Corp. • Blank checks

This letter is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into by and between Southern Cross Acquisition II Corp., a Cayman Islands company (the “Company”), and D. Boral Capital LLC, as representative (the “Representative”) of the several underwriters named on Schedule A thereto (the “Underwriters”), relating to an underwritten initial public offering (the “IPO”) of the Company’s units (the “Units”), each comprised of one ordinary share of the Company, par value $0.0001 per share (the “Ordinary Shares”), one redeemable warrant, with each whole warrant to acquire one Ordinary Share (the “Warrants”), and one right to receive one-fourth (1/4) of one Ordinary Share (the “Rights”). Certain capitalized terms used herein are defined in paragraph 14 hereof.