Browse EX-10 agreements

Exhibit 10.1

March 13, 2026

Sonalee Parekh [***]

Re: Offer of employment at SentinelOne, Inc.

Dear Sonalee:

We are very pleased to invite you to join SentinelOne, Inc. (the “Company,” or “SentinelOne”).

1.Duties and Responsibilities. Your initial assignment will be as Chief Financial Officer reporting to Tomer Weingarten in their capacity as Chief Executive Officer. This offer letter (“Offer”) is for a full-time position. This position is designated as a section 16 Executive Officer. You will provide services at Your Approved Location, which means [***], where you will perform work remotely, in addition to reporting to the office on a regular basis. The Company may change Your Approved Location in its sole discretion; you may not change Your Approved Location unless you satisfy the requirements of

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LOAN AGREEMENT

This Loan Agreement (this “Agreement”) is entered into as of March 17, 2026 (the “Effective Date”),

BY AND BETWEEN

Good Mood Studio Inc.,

a company duly organized and existing under the laws of California

(“Lender”),

AND

Vestand Inc.,

a corporation duly incorporated and existing under the laws of the State of Delaware (“Borrower”).

Lender and Borrower may be referred to individually as a “Party” and collectively as the “Parties.”

1. LOAN AMOUNT AND DISBURSEMENT

1.1 Loan Amount

Lender agrees to lend to Borrower, and Borrower agrees to borrow from Lender, the principal amount of Two Hundred Thousand U.S. Dollars (USD $200,000) (the “Loan”).

1.2 Disbursement Date

The Loan shall be disbursed on March 17, 2026, by wire transfer or other immediately available funds to an account designated by Borrower.

1.3 Interest Commencement Date

Interest shall accrue from the date the Loan is actually disbursed to Borrower.

2. INTEREST

2.1 Interest Rate

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PRIVATE PLACEMENT WARRANTS AGREEMENT

THIS PRIVATE PLACEMENT WARRANTS AGREEMENT, dated as of [●], 2026, (as it may from time to time be amended, this “Agreement”), is entered into between Keystone Acquisition Corp., a Cayman Islands exempted company (the “Company”), and the several purchasers listed in Schedule A attached hereto (each a “Purchaser” and together, the “Purchasers”).

WHEREAS, the Company intends to consummate an initial public offering (the “Public Offering”) of the Company’s units, each unit consisting of one Class A ordinary share, par value $0.0001 per share, of the Company (each, an “Ordinary Share”), and one-half of one redeemable warrant, each whole warrant entitling the holder thereof to purchase one Ordinary Share at an exercise price of $11.50 per Ordinary Share, as set forth in the Company’s Registration Statement on Form S-1 (File No. 333-295539) (the “Registration Statement”), filed with the U.S. Securities and Exchange Commission (the “SEC”) under the Securities

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PRIVATE PLACEMENT WARRANTS AGREEMENT

THIS PRIVATE PLACEMENT WARRANTS AGREEMENT, dated as of [●], 2026 (as it may from time to time be amended, this “Agreement”), is entered into between Keystone Acquisition Corp., a Cayman Islands exempted company (the “Company”), and Keystone International Acquisition Management LLC, a Delaware limited liability company (the “Purchaser”).

WHEREAS, the Company intends to consummate an initial public offering (the “Public Offering”) of the Company’s units, each unit consisting of one Class A ordinary share, par value $0.0001 per share, of the Company (each, an “Ordinary Share”), and one-half of one redeemable warrant, each whole warrant entitling the holder thereof to purchase one Ordinary Share at an exercise price of $11.50 per Ordinary Share, as set forth in the Company’s Registration Statement on Form S-1 (File No. 333-295539) (the “Registration Statement”), filed with the U.S. Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”).

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REGISTRATION RIGHTS AGREEMENT

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of [●], 2026, is made and entered into by and among Keystone Acquisition Corp., a Cayman Islands exempted company (the “Company”), Keystone International Acquisition Management LLC, a Delaware limited liability company (the “Sponsor”), Cohen & Company Capital Markets, a division of Cohen & Company 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 the Representative and any person or entity who hereafter becomes a party to this Agreement pursuant to Section 5.2 of this Agreement, a “Holder” and collectively the “Holders”).

RECITALS

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INVESTMENT MANAGEMENT TRUST AGREEMENT

This Investment Management Trust Agreement (this “Agreement”) is made effective as of [●], 2026 by and between Keystone Acquisition Corp., 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. 333-295539 (the “Registration Statement”) and prospectus (the “Prospectus”) for the initial public offering (the “Offering”) of the Company’s units (the “Units”), each of which consists of one Class A ordinary share, par value $0.0001 per share (the “Ordinary Shares”), and one-half of one redeemable warrant, each whole warrant entitling the holder thereof to purchase one Ordinary Share, has been declared effective as of the date hereof by the U.S. Securities and Exchange Commission; and

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Exhibit 10.1

[●], 2026

Keystone Acquisition Corp.

142 West 57th Street, 11th Floor

New York, New York 10019

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 Keystone Acquisition Corp., a Cayman Islands exempted company (the “Company”), and Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC, as representative (the “Representative”) of the several underwriters (each, including the Representative, an “Underwriter” and collectively, the “Underwriters”), relating to an underwritten initial public offering (the “Public Offering”), of up to 28,750,000 of the Company’s units (including up to 3,750,000 units that may be purchased to cover over-allotments, if any) (the “Units”), each comprised of one of the Company’s Class A ordinary shares, par value $0.0001 per share (the “Class A Ordinary Shares”), and one-half of one

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Exhibit 10.5

SECURITY AGREEMENT

THIS SECURITY AGREEMENT (this “Agreement”) is made as of May 21, 2026, by and between Vestand Inc., a Delaware corporation (the “Company”) on the one hand, and MIN GAN ZHE INVESTMENT LIMITED, a Hong Kong corporation (the “Secured Party”) on the other hand (collectively, the “Parties”).

The Parties hereto agree as follows:

Security Interest. In consideration of that certain loan (the “Loan”) made by the Secured Party to the Company pursuant to that certain Loan Agreement dated May 21, 2026 (the “Loan Agreement”), on even date herewith, and the financial accommodation made or extended by the Secured Party to or for the account of the Company, directly or indirectly, as principal, guarantor or otherwise, specifically the obligation evidenced by that certain Secured Promissory Note (the “Note”) between the Parties executed on even date herewith, the terms of which are incorporated herein by reference, the Company hereby grants to Secured Party a first priority

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Exhibit 10.4

SECURED PROMISSORY NOTE

$500,000	May 21, 2026

FOR VALUE RECEIVED, Vestand Inc., a Delaware corporation (“Payor”), promises to pay to MIN GAN ZHE INVESTMENT LIMITED, a Hong Kong corporation (the “Holder”), the principal sum of $500,000 (the “Principal Balance”) on the terms set forth below. Interest on the outstanding Principal Balance shall accrue at the rate of 8% per annum. Interest shall commence on the date hereof and shall continue on the outstanding principal until paid in full. Interest shall be computed on the basis of a year of 365 days for the actual number of days elapsed.

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Exhibit 10.3

LOAN AGREEMENT

THIS LOAN AGREEMENT (this “Loan Agreement”) is made and entered into as of May 21, 2026 (the “Effective Date”), among MIN GAN ZHE INVESTMENT LIMITED, a Hong Kong corporation (“Lender”), Vestand Inc., a Delaware corporation (“Borrower”), and Vestand Korea Co., Ltd. (“Vestand Korea”) with respect to the following:

RECITALS

WHEREAS, pursuant to a Financing Agreement dated May 21, 2026 (the “Financing Agreement”), the Lender has agreed to make the loan described in this Loan Agreement on the terms and conditions set forth in this Loan Agreement; and

WHEREAS, Lender and Borrower agreed pursuant to the Financing Agreement that the loan created by this Loan Agreement shall not be convertible into any shares of capital stock or other equity securities of the Borrower, and shall be secured by a loan receivable owing to the Borrower, including the principal and interest, pursuant to that certain loan agreement, dated October 10, 2025, between the Borrower and Vestand Korea.

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Exhibit 10.2

SECURITIES PURCHASE AGREEMENT

THIS SECURITIES PURCHASE AGREEMENT (this “Agreement,” as the same may hereafter be modified, supplemented, extended, amended, restated, or amended and restated from time to time), is entered into and made effective as of May 21, 2026 (the “Effective Date”), by and among Vestand Inc., a Delaware corporation (the “Company”), and MIN GAN ZHE INVESTMENT LIMITED, a Hong Kong corporation (the “Investor”).

RECITALS

WHEREAS, pursuant to a Financing Agreement dated May 21, 2026 (the “Financing Agreement”), Investor agreed to purchase shares of Class A Common Stock of Company at a purchase price of $0.371 per Share;

WHEREAS, Company desires to sell to Investor and Investor desires to purchase from Company, 1,347,708 shares (the “Shares”) of the Company’s Class A Common Stock (“Common Stock”), subject to final rounding and confirmation by the Company and its Transfer Agent; and

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Exhibit 10.1

FINANCING AGREEMENT

This Financing Agreement (this “Agreement”) is entered into as of May 21, 2026, by and between Vestand Inc., a Delaware corporation (the “Company”), and MIN GAN ZHE INVESTMENT LIMITED, a Hong Kong corporation (the “Investor”) (individually referred to as a “Party” and collectively as the “Parties”).

RECITALS

WHEREAS, the Company desires to raise an aggregate amount of US$1,000,000 (the “Financing Amount”) from the Investor;

WHEREAS, the Parties intend for the financing to be structured in two separate components: (i) an equity investment in the Company’s Class A Common Stock (the “Equity Portion”) in the amount of US$500,000 (the “Equity Investment Amount”), and (ii) a non-convertible loan to the Company (the “Debt Portion”) in the principal amount of US$500,000 (the “Debt Amount”);

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