DocID:63c08bed7f533b351b97730eba2cb4d812e49a1b

25 August 2026

ANNEX A - KNOCK-IN COLLAR LOAN ANNEX

Non-Recourse, 30-Day Rolling Knock-In Collar Loan

This Collar Loan Annex (this “Annex”) is entered into as of 25 August 2026 and forms part of the Loan and Security Agreement (the “Agreement”) between ChainFi, Inc. d/b/a Arch Lending, a Delaware corporation with its principal place of business at 595 Broadway, 4th Floor, New York, NY 10012 (“Lender”), and US Digital Mining and Hosting Co., LLC, a Florida limited liability company whose address is 1200 W Platt Street, Suite 100, Tampa, FL 33606 (“Borrower”). This Annex sets out the terms on which Lender will make available to Borrower a non-recourse, collared, 30-day rolling loan secured by Bitcoin (each such loan, a “Collar Loan”).

1.INCORPORATION,SCOPEANDORDEROFPRECEDENCE

1.1

Incorporation;amendmentoftheAgreement.ThisAnnexisaRelatedDocumentandisincorporatedintoand forms part of the Agreement. This Annex operates as an amendment to the Agreement and, in respect of each Collar Loan, amends, supplements, supersedes and disapplies the provisions of the Agreement identified in it. Each provision of the Agreement stated in this Annex to be deleted, disapplied, amended, replaced or of no force or effect issodeleted,disapplied,amendedorreplacedbyagreementoftheparties,andnotmerelywaivedorforborne, inrespectofeachCollarLoan.ThisAnnexisexecutedbybothpartiesandsatisfiestherequirementsofSection16.9 of the Agreement (Modification) in respect of every such amendment. Neither party may resile from any such

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ChainFi,IncLoanandSecurityAgreement

TruthinLendingActDisclosure

Date:08/25/26

BORROWER:LENDER:

USDigitalMining&HostingCo 1200 West Platt Street Suite 100 Tampa, FL, 33606, US

LoanID:100178075293 4372

CHAINFI,INC

595Broadway,Floor4 NewYork,NY,10012

Please note that signing this loan document will VOID the previously signed loan agreement (with Loan ID: 1001 7807 5293 8767) effective as of the date of signing this document. This loan agreement will be the source of truth for all purposes. The “Appendix for Loan Calculations Ledger” shows the ledger of repaying the first loan ID and disbursing the second loan ID.

YOURLOANIS:

Interest-OnlyLoan–Monthlypaymentscoverinterestonly;principaldueinfullatmaturity.

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AMENDMENT TO SECURITIES PURCHASE AGREEMENT AND REGISTRATION RIGHTS AGREEMENT

This Amendment To Securities Purchase Agreement and Registration Rights Agreement (this “Amendment”) is entered into by and among RenX Enterprises Corp., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser”), effective as of August 26, 2026. Reference is made to (i) that certain Securities Purchase Agreement, dated April 30, 2026 (the “Purchase Agreement”), by and among the Company and the Purchaser; and (ii) that certain Registration Rights Agreement, dated April 30, 2026, by and among the Company and the Purchaser (the “Registration Rights Agreement” and, together with the Purchase Agreement, the “Financing Agreements”).

Terms used herein without definition shall have the meaning assigned such terms in the respective Financing Agreement.

** **

WHEREAS, the Company and the Purchaser desire to amend the Purchase Agreement and Registration Rights Agreement to revise the definition of the Second Closing Date and certain of the Company’s obligations related to the registration of the shares of Common Stock issuable upon conversion of the First Notes, Second Notes and Second Warrants, in each case as more particularly set forth in this Amendment.

** **

WHEREAS, the Company and the Purchaser have agreed that the Second Closing Date shall occur on the date of this Amendment.

** **

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EXECUTION VERSION

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is effective as of August 28, 2026 by and between Matthew Hutchings (the “Executive”) and SeeQC UK Limited. (the “Company”), a wholly owned subsidiary of SeeQC, Inc. (the “Parent”). The Executive and the Company are collectively referred to herein as the “Parties”.

** **

RECITALS

** **

WHEREAS, the Company previously entered into that certain Employment Agreement, dated May 26, 2026, with the Executive (the “Prior Agreement”).

** **

WHEREAS, the Company desires to continue to employ the Executive and the Executive desires to continue be employed by the Company on the terms contained herein, which terms shall replace and supersede any and all prior agreements between Executive and the Company related to the Executive’s employment by the Company.

** **

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as follows:

1. Employment.

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EXECUTION VERSION

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is effective as of August 28, 2026 by and between Oleg Mukhanov (the “Executive”) and SeeQC, Inc. (the “Company”; the Executive and the Company are collectively referred to as the “Parties”).

** **

RECITALS

** **

WHEREAS, the Company previously entered into that certain Employment Agreement, dated May 26, 2026, with the Executive (the “Prior Agreement”).

** **

WHEREAS, the Company desires to continue to employ the Executive and the Executive desires to continue be employed by the Company on the terms contained herein, which terms shall replace and supersede any and all prior agreements between Executive and the Company related to the Executive’s employment by the Company.

** **

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as follows:

1. Employment.

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EXECUTION VERSION

Amended and Restated EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is effective as of August 28, 2026 by and between Shu-Jen Han (the “Executive”) and SeeQC, Inc. (the “Company”; the Executive and the Company are collectively referred to as the “Parties”).

** **

RECITALS

** **

WHEREAS, the Company previously entered into that certain Employment Agreement, dated May 26, 2026, with the Executive (the “Prior Agreement”).

** **

WHEREAS, the Company desires to continue to employ the Executive and the Executive desires to continue be employed by the Company on the terms contained herein, which terms shall replace and supersede any and all prior agreements between Executive and the Company related to the Executive’s employment by the Company.

** **

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as follows:

1. Employment.

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EXECUTION VERSION

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is effective as of August 28, 2026 by and between Raja Bal (the “Executive”) and SeeQC, Inc. (the “Company”; the Executive and the Company are collectively referred to as the “Parties”).

** **

RECITALS

** **

WHEREAS, the Company previously entered into that certain Employment Agreement, dated May 26, 2026, with the Executive (the “Prior Agreement”).

** **

WHEREAS, the Company desires to continue to employ the Executive and the Executive desires to continue be employed by the Company on the terms contained herein, which terms shall replace and supersede any and all prior agreements between Executive and the Company related to the Executive’s employment by the Company.

** **

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as follows:

1. Employment.

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EXECUTION VERSION

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is effective as of August 28, 2026 by and between John Levy (the “Executive”) and SeeQC, Inc. (the “Company”; the Executive and the Company are collectively referred to as the “Parties”).

** **

RECITALS

** **

WHEREAS, the Company previously entered into that certain Employment Agreement, dated May 26, 2026, with the Executive (the “Prior Agreement”).

** **

WHEREAS, the Company desires to continue to employ the Executive and the Executive desires to continue be employed by the Company on the terms contained herein, which terms shall replace and supersede any and all prior agreements between Executive and the Company related to the Executive’s employment by the Company.

** **

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties agree as follows:

1. Employment.

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RESTRICTED STOCK UNIT AGREEMENT

UNDER

JACK HENRY & ASSOCIATES, INC. 2025 EQUITY INCENTIVE PLAN

(Non-Employee Directors)

Date of Award:					____________________
Number of Restricted Stock Units Granted:					____________________
Awardee:					____________________

        THIS AGREEMENT (the “Agreement”) is made on the Date of Award noted above (the “Date of Award”) and is between Jack Henry & Associates, Inc., a Delaware corporation (hereinafter called the “Company”), and the Awardee listed above (“Awardee”).

        WHEREAS, the Board of Directors of the Company (“Board”) and the stockholders of the Company have adopted the Jack Henry & Associates, Inc. 2025 Equity Incentive Plan (“Plan”) pursuant to which restricted stock units (“RSUs”) may be granted to directors of the Company; and

        WHEREAS, the Company desires to make a restricted stock unit award to the Awardee pertaining to the number of RSUs granted set forth above (“Award”), under the terms hereinafter set forth;

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EXHIBIT 10.84        (Executive-Form)

JACK HENRY & ASSOCIATES, INC.
2025 EQUITY INCENTIVE PLAN

PERFORMANCE SHARES AGREEMENT

Date of Grant:					[Date]
Number of Performance Shares Granted

        This Award Agreement (“Award Agreement” or “Agreement”) dated [Date], is made by and between Jack Henry & Associates, Inc., a Delaware corporation (the “Company”), and _______________ (“Participant”).

RECITALS:

        A.    Effective November 14, 2025, the Company's stockholders approved the Jack Henry & Associates, Inc. 2025 Equity Incentive Plan pursuant to which the Company may, from time to time, grant Performance Shares to eligible Service Providers of the Company and its Affiliates.

B.    Participant is a Service Provider of the Company or one of its Affiliates and the Company desires to encourage him/her to own Shares and to give him/her added incentive to advance the interests of the Company, and desires to grant Participant Performance Shares under the terms and conditions established by the Human Capital & Compensation Committee (the “Committee”).

AGREEMENT:

        In consideration of the mutual covenants contained herein and other good and valuable consideration, the receipt of which is hereby acknowledged, the parties agree as follows:

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EXHIBIT 10.83        (Executive Form)

JACK HENRY & ASSOCIATES, INC.

2025 EQUITY INCENTIVE PLAN

RESTRICTED STOCK UNIT AGREEMENT

(Employees)

    Date of Award:        [DATE]

    Number of RSUs Granted:    [NUMBER]        (the “Award”)

        THIS AWARD AGREEMENT dated [DATE] is made by and between Jack Henry & Associates, Inc., a Delaware corporation (hereinafter called the “Company”), and [NAME] (hereinafter called “Awardee”).

RECITALS:

    A.    The Company’s stockholders and Board of Directors of the Company (“Board”) has adopted the Jack Henry & Associates, Inc. 2025 Equity Incentive Plan (“Plan”) pursuant to which restricted stock units may be granted to employees of the Company; and

    B.    The Company desires to grant restricted Stock Units (“RSUs”) to Awardee under the terms and conditions hereinafter set forth;

AGREEMENT:

        In consideration of the mutual covenants contained herein and other good and valuable consideration, the receipt of which is hereby acknowledged, the parties agree as follows:

        1.    Award Subject to Plan. This Award is made under and is expressly subject to all the terms and provisions of the Plan, and which terms are incorporated herein by reference. Awardee agrees to be bound by all the terms and provisions of the Plan. Terms not defined herein shall have the meaning ascribed thereto in the Plan.

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REGISTRATION RIGHTS AGREEMENT

This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of August __, 2026, is by and among SRX Global Inc., a Delaware corporation with offices located at 801 US Highway 1, North Palm Beach, Florida 33408 (the “Company”), and the undersigned buyers (each, a “Buyer,” and collectively, the “Buyers”).

RECITALS

A. In connection with the Securities Purchase Agreement by and among the parties hereto, dated as of August __, 2026 (the “Securities Purchase Agreement”), the Company has agreed, upon the terms and subject to the conditions of the Securities Purchase Agreement, to issue and sell to each Buyer Preferred Shares (as defined in the Securities Purchase Agreement) which will be convertible into Conversion Shares (as defined in the Securities Purchase Agreement) in accordance with the terms of the Certificate of Designations (as defined in the Securities Purchase Agreement).

B. To induce the Buyers to consummate the transactions contemplated by the Securities Purchase Agreement, the Company has agreed to provide certain registration rights under the Securities Act of 1933, as amended, and the rules and regulations thereunder, or any similar successor statute (collectively, the “1933 Act”), and applicable state securities laws.

AGREEMENT

NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and each of the Buyers hereby agree as follows:

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