Plum Acquisition Corp, IV Sample Contracts

INDEMNITY AGREEMENT
Indemnity Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks • Delaware

NOW, THEREFORE, in consideration of the premises and the covenants contained herein and subject to the provisions of the letter agreement dated as of the date hereof, among the Company, Indemnitee and other parties thereto pursuant to the Underwriting Agreement between the Company and the representative of the Underwriters named therein in connection with the Company’s initial public offering, the Company and Indemnitee do hereby covenant and agree as follows:

INVESTMENT MANAGEMENT TRUST AGREEMENT
Investment Management Trust Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks

This Investment Management Trust Agreement (this “Agreement”) is made effective as of January 14, 2025, by and between Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation (the “Trustee”).

INDEMNITY AGREEMENT
Indemnification & Liability • December 13th, 2024 • Plum Acquisition Corp, IV • Blank checks • Delaware

NOW, THEREFORE, in consideration of the premises and the covenants contained herein and subject to the provisions of the letter agreement dated as of the date hereof, among the Company, Indemnitee and other parties thereto pursuant to the Underwriting Agreement between the Company and the representative of the Underwriters named therein in connection with the Company’s initial public offering, the Company and Indemnitee do hereby covenant and agree as follows:

UNIT SUBSCRIPTION AGREEMENT
Unit Subscription Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks • New York

This Unit Subscription Agreement (this “Agreement”) is made as of this 14th day of January, 2025, by and between Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), having its principal place of business at 2021 Fillmore St. #2089, San Francisco, California 94115, and Cohen & Company Capital Markets, a division of J.V.B. Financial Group, LLC (the “Purchaser”).

WARRANT AGREEMENT PLUM ACQUISITION CORP. IV and CONTINENTAL STOCK TRANSFER & TRUST COMPANY Dated January 14, 2025
Warrant Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks • New York

THIS WARRANT AGREEMENT (this “Agreement”), dated January 14, 2025, is by and between Plum Acquisition Corp. IV, 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”).

Plum Acquisition Corp. IV
Subscription Agreement • July 31st, 2024 • Plum Acquisition Corp, IV • New York

We are pleased to accept the offer Plum Partners IV, LLC (the “Subscriber” or “you”) has made to purchase 7,665,900 shares (“Founder Shares”) of the Class B ordinary shares, $0.0001 par value per share (“Class B Ordinary Shares”), of Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), up to 999,900 of which are subject to forfeiture by you if the underwriters of the proposed initial public offering (“IPO”) of the Company pursuant to the registration statement on Form S-1 expected to be filed by the Company in connection with the IPO (the “Registration Statement”) do not fully exercise their over-allotment option (the “Over-allotment Option”) as described below. For the purposes of this Agreement (this “Agreement”), references to “Ordinary Shares” are to, collectively, the Class B Ordinary Shares and the Company’s Class A ordinary shares, $0.0001 par value per share (the “Class A Ordinary Shares”). Pursuant to the Company’s memorandum and articles of associatio

UNDERWRITING AGREEMENT between PLUM ACQUISITION CORP. IV and COHEN & COMPANY CAPITAL MARKETS, A DIVISION OF J.V.B. FINANCIAL GROUP, LLC and SEAPORT GLOBAL SECURITIES LLC As Representatives of the Underwriters Dated: January 14, 2025 UNDERWRITING AGREEMENT
Underwriting Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks • New York

The undersigned, Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), hereby confirms its agreement with Cohen & Company Capital Markets, a division of J.V.B. Financial Group, LLC (“CCM”) and Seaport Global Securities LLC (“Seaport” and collectively with CCM, “Representatives” and each, a “Representative”) and with the other underwriters named on Schedule A hereto (if any), for which the Representatives are acting as representatives (the Representatives and such other underwriters being collectively referred to herein as the “Underwriters” or, each underwriter individually, an “Underwriter,” provided that, if only the Representatives are listed on such Schedule A, any references to Underwriters shall refer exclusively to the Representatives) as follows:

REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks • New York

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of January 14, 2025, is made and entered into by and among Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), Plum Partners IV, LLC, a Delaware limited liability company (the “Sponsor”), Cohen & Company Capital Markets, a division of J.V.B. Financial Group, LLC (“Cohen”), Seaport Global Securities LLC (“Seaport” and together with Cohen, the “Representatives”), as representatives of the underwriters in the Company’s initial public offering (“IPO”), and any other parties listed on the signature page hereto (together with the Sponsor, Cohen, Seaport and any person or entity who hereafter becomes a party to this Agreement pursuant to Section 5.2 of this Agreement, the “Holders” and, each, a “Holder”).

UNIT AND RESTRICTED SHARE SUBSCRIPTION AGREEMENT
Unit and Restricted Share Subscription Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks • New York

This Unit and Restricted Share Subscription Agreement (this “Agreement”) is made as of this 14th day of January, 2025, by and between Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), having its principal place of business at 2021 Fillmore St. #2089, San Francisco, California 94115, and Plum Partners IV, LLC (the “Purchaser”).

Plum Acquisition Corp. IV 2021 Fillmore St. #2089 San Francisco, California 94115 United States of America
Underwriting Agreement • January 16th, 2025 • Plum Acquisition Corp, IV • Blank checks

This letter (this “Letter Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into or proposed to be entered into by and between Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), Cohen & Company Capital Markets, a division of J.V.B. Financial Group, LLC (“Cohen”) and Seaport Global Securities LLC (“Seaport” and together with Cohen, the “Underwriters”), relating to an underwritten initial public offering (the “Public Offering”), of up to 17,250,000 of the Company’s units (“Units”) (including up to 2,250,000 Units that may be purchased to cover over-allotments, if any), each comprised of one Class A ordinary share of the Company, par value $0.0001 per share (each, an “Ordinary Share”), and one-half of one redeemable warrant (each whole warrant, a “Warrant”). Each Warrant entitles the holder thereof to purchase one Ordinary Share at a price of $11.50 per share, subject to adjustment. The Uni

Plum Acquisition Corp. IV San Francisco, CA 94115 Tel. (929) 529-7125
Consulting Agreement • November 5th, 2024 • Plum Acquisition Corp, IV • Blank checks

This letter agreement (this “Agreement”) sets forth the terms and conditions whereby Freya Advisory, LLC (the “Consultant”) agrees to provide certain services (as described below) to Plum Acquisition Corp. IV (the “Company”).

UNIT AND RESTRICTED SHARE SUBSCRIPTION AGREEMENT
Unit and Restricted Share Subscription Agreement • January 7th, 2025 • Plum Acquisition Corp, IV • Blank checks • New York

This Unit and Restricted Share Subscription Agreement (this “Agreement”) is made as of this ____ day of _____, 2025, by and between Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Company”), having its principal place of business at 2021 Fillmore St. #2089, San Francisco, California 94115, and Plum Partners IV, LLC (the “Purchaser”).

Contract
Business Combination Agreement • May 19th, 2026 • Plum Acquisition Corp, IV • Blank checks

AMENDMENT NO. 1 TO BUSINESS COMBINATION AGREEMENT, dated as of May 15, 2026 (this “Amendment”), by and among Plum Acquisition Corp. IV, a Cayman Islands exempted company (the “Purchaser”), Plum IV Merger Sub Inc., a Delaware corporation and a direct wholly owned subsidiary of the Purchaser (“Merger Sub”), and Controlled Thermal Resources Holdings Inc., a Delaware corporation (the “Company” and together with the Purchaser and Merger Sub, the “Parties”).

NON-REDEMPTION AGREEMENT AND ASSIGNMENT OF ECONOMIC INTEREST
Non-Redemption Agreement and Assignment of Economic Interest • July 1st, 2026 • Plum Acquisition Corp, IV • Blank checks • New York

This Non-Redemption Agreement and Assignment of Economic Interest (this “Agreement”) is entered as of [ ], 2026, by and among Plum Acquisition Corp. IV, a Cayman Islands exempted company (“Plum”), Plum Partners IV, LLC, a Delaware limited liability company (the “Sponsor”) and the undersigned investor (the, “Investor”).

AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • March 12th, 2026 • Plum Acquisition Corp, IV • Blank checks • Delaware

This Amended and Restated Registration Rights Agreement (this “Agreement”) is made and entered into as of _________, 2026, by and among [●], a Delaware corporation (formerly known as Plum Acquisition Corp. IV, a Cayman Islands exempted corporation, prior to its domestication as a Delaware corporation) (the “Company”), Plum Partners IV, LLC (the “Sponsor”) and each of the undersigned parties listed under “Holder” on the signature pages hereto (each such party, together with the Sponsor and any person or entity who hereafter becomes a party to this Agreement pursuant to Section 6.3 of this Agreement, a “Holder” and collectively the “Holders”). Any capitalized term used but not defined herein will have the meaning ascribed to such term in the Business Combination Agreement (as defined below).

TRANSACTION SUPPORT AGREEMENT
Transaction Support Agreement • March 12th, 2026 • Plum Acquisition Corp, IV • Blank checks

TRANSACTION SUPPORT AGREEMENT, dated as of March 8, 2026 (this “Agreement”), by and among Plum Acquisition Corp. IV, a Cayman Islands exempted company (which shall transfer by way of continuation and domesticate as a Delaware corporation prior to Closing) (“Purchaser”), and certain of the stockholders of Controlled Thermal Resources Holdings Inc., a Delaware corporation (the “Company”), whose names appear on the signature pages of this Agreement (each, a “Stockholder” and, collectively, the “Stockholders”).

FORM OF LOCK-UP AGREEMENT
Lock-Up Agreement • March 12th, 2026 • Plum Acquisition Corp, IV • Blank checks • Delaware

This Lock-Up Agreement (this “Agreement”) is made and entered into as of _________, 2026, by and among [●], a Delaware corporation (formerly known as Plum Acquisition Corp. IV, a Cayman Islands exempted corporation, prior to its domestication as a Delaware corporation) (the “Company”), Plum Partners IV, LLC (the “Sponsor”) and those equityholders of the Company listed on the signature pages hereto (each, a “Lock-Up Party” and, collectively, the “Lock-Up Parties”). Capitalized terms used but not otherwise defined herein shall have the respective meanings ascribed to such terms in the Business Combination Agreement (as defined below).

DATED MARCH 8, 2026 BUSINESS COMBINATION AGREEMENT
Business Combination Agreement • March 12th, 2026 • Plum Acquisition Corp, IV • Blank checks • Delaware

This Business Combination Agreement (this “Agreement”) is made and entered into as of March 8, 2026, by and among (i) Plum Acquisition Corp. IV, a Cayman Islands exempted company (which shall transfer by way of continuation and domesticate as a Delaware corporation prior to Closing) (the “Purchaser”), (ii) Plum IV Merger Sub Inc., a Delaware corporation and a direct wholly owned subsidiary of the Purchaser (“Merger Sub”), and (iii) Controlled Thermal Resources Holdings Inc., a Delaware corporation (the “Company”). The Purchaser, Merger Sub and the Company are sometimes referred to herein individually as a “Party” and, collectively, as the “Parties.” Certain capitalized terms used in this Agreement have the meanings given to them in Article X of this Agreement.