Browse EX-10 agreements

FORM OF COMPANY SUPPORT AGREEMENT

This COMPANY SUPPORT AGREEMENT (this “Agreement”) is dated as of August 5, 2026, by and among the Persons set forth on Schedule I hereto (each, a “Company Shareholder” and, collectively, the “Company Shareholders”), Pono Capital Four, Inc., a Cayman Islands exempted company (“Parent”), and Blackstar Orbital Technology Corporation, a private corporation incorporated in Delaware (the “Company”). Capitalized terms used but not defined herein shall have the respective meanings ascribed to such terms in the Merger Agreement (as defined below).

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RECITALS

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PRIVATE UNITS PURCHASE AGREEMENT

This PRIVATE UNITS PURCHASE AGREEMENT (this “Agreement”) is made as of the 3rd day of August, 2026, by and between ARC Group Securities Acquisition I, a Cayman Islands exempted company (the “Company”) and FDB I, a Cayman Islands limited liability company (“FDBI” or the “Subscriber”).

WHEREAS, the Company intends to consummate an initial public offering (the “IPO”) of the Company’s units (the “Units”), each Unit consisting of one Class A ordinary share, par value US$0.0001 per share, of the Company (the “Class A Ordinary Shares”), one right entitling the holder to one-quarter of one Class A Ordinary Share (each, a “Public Right”) and one redeemable warrant (a “Public Warrant”) to be governed by the Warrant Agreement to be entered into between the Company and Efficiency, INC. (“Efficiency”), as warrant agent (the “Warrant Agreement”). Each Warrant entitles the holder thereof to purchase one Class A Ordinary Share at an exercise price of $11.50 per Class A Ordinary Share;

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REGISTRATION AND SHAREHOLDER RIGHTS AGREEMENT

THIS REGISTRATION AND SHAREHOLDER RIGHTS AGREEMENT (this “Agreement”), dated as of August 3, 2026, is made and entered into by and among ARC Group Securities Acquisition I, a Cayman Islands exempted company (the “Company”), FDB I, a Cayman Islands limited liability company (the “Sponsor”), and ARC Group Securities LLC (the “Representative”) and each of the undersigned parties listed on the signature page hereto under “Holders” (each such party, together with the Sponsor and Representative and any person or entity who hereafter becomes a party to this Agreement pursuant to Section 6.2 of this Agreement, a “Holder” and collectively the “Holders”).

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August 3,2026

**ARC Group Securities Acquisition I **

398 S. Mill Avenue, Suite 201B

Tempe, AZ 85281

Re: Administrative Services Agreement

Ladies and Gentlemen:

This letter agreement by and between ARC Group Securities Acquisition I, a Cayman Islands exempted company (the “Company”) and FDB I, a Cayman Islands limited liability company (the “Sponsor”), 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 Nasdaq Global Market (the “Effective Date”) of the registration statement (the “Registration Statement”) in connection with the initial public offering (the “IPO”) of the Company’s securities and continuing until the earlier of (i) the consummation by the Company of an initial business combination or (ii) the Company’s liquidation (in each case as described in the Registration Statement) (such earlier date hereinafter referred to as the “Termination Date”), the Sponsor shall make available (or cause other persons to make available) to the Company at 398 S.

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August 3, 2026

ARC Group Securities Acquisition I

201B

Tempe, AZ 85281

Attention: CEO

	Re:	Initial Public Offering

Ladies and Gentlemen:

This letter (this “Letter Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into by and among ARC Group Securities Acquisition I, incorporated in the Cayman Islands as an exempted company (the “Company”), and ARC Group Securities LLC, as representative (the “Representative”) of the several underwriters (each, an “Underwriter” and collectively, the “Underwriters”), relating to an underwritten initial public offering (the “Public Offering”), of up to 10,500,000 of the Company’s units (plus up to 1,575,000 units that may be purchased to cover over-allotments, if any) (the “Units”), each consisting of one of the Company’s Class A ordinary shares, par value US$0.0001 per share (the “Class A Ordinary Shares”), one right to receive one

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Exhibit 10.5

FORM OF INDEMNITY AGREEMENT

THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of August 3, 2026, by and between ARC Group Securities Acquisition I, a Cayman Islands exempted company (the “Company”), and the undersigned (“Indemnitee”).

RECITALS

**WHEREAS, **highly competent persons have become more reluctant to serve publicly-held companies as directors, officers or in other capacities unless they are provided with adequate protection through insurance or adequate indemnification against inordinate risks of claims and actions against them arising out of their service to and activities on behalf of such companies;

WHEREAS, the Board of Directors of the Company (the “Board”) has determined that, in order to attract and retain qualified individuals, the Company will attempt to maintain on an ongoing basis, at its sole expense, liability insurance to protect persons serving the Company and its Subsidiaries (as defined below) from certain liabilities;

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INVESTMENT MANAGEMENT TRUST AGREEMENT

This Investment Management Trust Agreement (this “Agreement”) is made effective as of August 3, 2026 by and between ARC Group Securities Acquisition I, a Cayman Islands exempted company (the “Company”), and Efficiency INC., a Delaware corporation (the “Trustee”).

WHEREAS, the Company’s registration statement on Form S-1, (File No. 333-291302) (the “Registration Statement”) and prospectus (the “Prospectus”) for the initial public offering of the Company’s units (the “Units”), each of which consists of one of the Company’s Class A ordinary shares, par value $0.0001 per share (the “Ordinary Shares”), and one right that entitles the holder thereof to receive one-quarter of one Ordinary Share and one redeemable warrant, each whole warrant entitling the holder thereof to purchase one Ordinary Share (such initial public offering hereinafter referred to as the “Offering”), has been declared effective as of the date hereof by the U.S. Securities and Exchange Commission;

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FIRST AMENDMENT

TO THE

BUSINESS COMBINATION AGREEMENT

This First Amendment (this “First Amendment”) to the Business Combination Agreement, dated as of August 6, 2026, amends the Business Combination Agreement, dated as of November 9, 2025 (the “Original Agreement”, as amended pursuant to this First Amendment and as may be further amended, supplemented, modified and/or restated from time to time, the “Business Combination Agreement”), by and among (i) Columbus Acquisition Corp., a Cayman Islands exempted company (together with its successors, “CAC”), (ii) WISeSat.Space Holdings Corp., a British Virgin Islands business company (“Pubco”), (iii) WISeSat Merger Sub Corp., a Cayman Islands exempted company and a wholly owned subsidiary of Pubco (“Merger Sub”), (iv) WISeSat.Space Corp., a British Virgin Islands business company (the “Company”), (v) WISeKey International Holding Ltd., a Swiss company (together with its successors, including after its anticipated domestication to the British Virgin Islands prior to the Closing, “WISeKey”) and (vi

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SPECIFIC TERMS IN THIS EXHIBIT HAVE BEEN REDACTED BECAUSE (1) SUCH TERMS ARE BOTH NOT MATERIAL AND ARE THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL, OR (2) DISCLOSURE OF SUCH INFORMATION WOULD CONSTITUTE A CLEARLY UNWARRANTED INVASION OF PERSONAL PRIVACY. THESE REDACTED TERMS HAVE BEEN MARKED IN THIS EXHIBIT WITH THREE ASTERISKS AS [***].

Prepared for	Prepared by
AIM Immunotech Inc	Sterling Pharma Solutions
	Judy Boan Business Development Director
Ali Afnan
	Phone: [***]
Email: [***]	Email: [***]

Proposal: HEBA_7869_v3.D.24072026

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24th July 2026

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August 5, 2026

Re: Offer of Employment

Dear Lionel F. Conacher,

CMRG Apparel, LLC (referred to herein as the “Company”) is pleased to extend this offer of employment to you as Interim Chief Executive Officer and Principal Executive Officer of the Company (the “Interim CEO”) beginning on August 12, 2026 (“Commencement Date”), under the following terms and conditions:

At-Will Employment. By accepting a position with the Company, you acknowledge that your employment is on an at-will basis and for an unspecified duration. Neither this offer letter, nor any other verbal representations, confer any right to continuing employment. Either you or the Company may terminate your employment relationship at any time, with or without cause, provided that other than in the event of a termination by the Company with Justifiable Cause (as defined in the Equity Plan, as defined below), each party shall provide the other party with thirty (30) days’ advance written notice. Your at-will employment status can only be changed in a written agreement signed by the Lead Independent Director of the Board

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[DEALER]

[__], 2026

To:	Procore Technologies, Inc.

6309 Carpinteria Avenue

Carpinteria, CA 93013

Attention: [    ]

Email: [    ]

Re:	[Base][Additional] Call Option Transaction

The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the call option transaction entered into on the Trade Date specified below (the “Transaction”) between [Dealer] (“Dealer”) and Procore Technologies, Inc. (“Counterparty”). This communication constitutes a “Confirmation” as referred to in the Agreement specified below.

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OMNIBUS JOINDER TO LETTER AGREEMENT AND
REGISTRATION RIGHTS AGREEMENT

August 6, 2026

Reference is made to that certain Letter Agreement, dated as of May 14, 2026 (the “Letter Agreement”), by and among Berto Acquisition Corp. II, a Cayman Islands exempted company (the “Company”), Berto Acquisition Sponsor II LLC, a Cayman Islands limited liability company (the “Sponsor”), Meteora Capital LLC (“Meteora”), Harry L. You, Robert H. You, Oanh Truong and other insiders of the Company (the “Directors”) and that certain Registration Rights Agreement, dated as of May 14, 2026 (the “Registration Rights Agreement”), by and among the Company, the Sponsor, Harry L. You, Robert H. You, Meteora, Oanh Truong, and Needham & Company, LLC. Capitalized terms used and not otherwise defined herein shall have the meanings given to such terms in the Agreement.

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