Material Agreement (Form 8-K)

Item 1.01. Entry into a Material Definitive Agreement.

Securities Purchase Agreement

On September 25, 2025, Datavault AI Inc., a Delaware corporation (the "Company"), entered into a Securities Purchase Agreement (the "Purchase Agreement") with Scilex Holding Company, a Delaware corporation (the "Purchaser), pursuant to which the Purchaser agreed to purchase from the Company in a registered offering, (a) 15,000,000 shares (the "Shares") of common stock of the Company, par value $0.0001 per share ("Common Stock"), and (b) a pre-funded warrant (the "Pre-Funded Warrant") to purchase 263,914,094 shares (the "Pre-Funded Warrant Shares") of Common Stock, for an aggregate purchase price of $150,000,000 in the native currency of the Bitcoin blockchain ("BTC") upon satisfaction of certain closing conditions applicable to the Shares and Pre-Funded Warrant, respectively.

The BTC to be paid to the Company in both Closings (as defined below) will be valued at the spot exchange rate for BTC as published by Coinbase.com at 8:00 p.m. (New York City time) on the trading day immediately prior to the Initial Closing Date (as defined below).

The closing with respect to the Shares (the "Initial Closing") will take place upon satisfaction of certain customary closing conditions set forth in the Purchase Agreement and is expected to occur on or about September 26, 2025 (the date of the Initial Closing, the "Initial Closing Date"). The closing with respect to the Pre-Funded Warrant (the "Additional Closing," and together with the Initial Closing, the "Closings"), subject to the satisfaction of certain additional closing conditions, will take place on the trading day (the date of the immediate after the Company receives the approval of its stockholders (the "Stockholder Approval") (i) as required by Nasdaq rules with respect to the transactions contemplated by the Purchase Agreement including with respect to issuance of all of the Pre-Funded Warrant Shares and (ii) with respect to an amendment to the Company's certificate of incorporation to increase the number of shares of Common Stock authorized for issuance to up to 1,500,000,000 (or such greater amount as is necessary to issue the Pre-Funded Warrant Shares to the Purchaser).

The Pre-Funded Warrant will be issued in the Additional Closing, will be immediately exercisable upon issuance without any beneficial ownership limitation at an exercise price of $0.0001 per share, and will remain exercisable until exercised in full.

As a condition to the Initial Closing, the Company is required to obtain stockholder support agreements (the "Voting Agreements") from stockholders holding an aggregate of 38,000,000 shares of Common Stock, pursuant to which each such stockholder will agree to vote their shares of Common Stock in favor of the proposals for the Stockholder Approval at any stockholder meeting held for that purpose. Additionally, each of the directors and executive officers of the Company, pursuant to lock-up agreements, agreed not to sell or transfer any of the Company securities which they hold, subject to certain exceptions, until the Additional Closing Date.

The Shares, the Pre-Funded Warrant and the Pre-Funded Warrant Shares will be offered by the Company pursuant to a registration statement on Form S-3 (File No. 333-288538), which was initially filed with the Securities and Exchange Commission (the "SEC") on July 7, 2025, and was declared effective by the SEC on July 9, 2025.

Obligations Under the Purchase Agreement

Pursuant to the Purchase Agreement, the Company agreed, subject to certain exceptions, (i) not to offer for sale, issue, sell, contract to sell, pledge or otherwise dispose of any of shares of Common Stock or securities convertible into shares of Common Stock until 45 days after the Initial Closing Date, and (ii) not to issue certain securities if the issuance would constitute a Variable Rate Transaction (as such term is defined in the Purchase Agreement) until the Additional Closing Date.

Within 25 days of the Initial Closing Date, the Company is required to file with the SEC a preliminary proxy statement for the purpose of obtaining the Stockholder Approval, and obtain such approval within 75 days of the Initial Closing Date at a meeting of stockholders. In the event that the Stockholder Approval is not obtained on or prior to such deadline, the Company is required to hold another stockholder meeting within 45 days, and continue to hold an additional stockholder meeting every fourth month thereafter until the Stockholder Approval is obtained.