Material Agreement (Form 8-K)

Item 1.01 Entry Into a Material Definitive Agreement.

Securities Purchase Agreement

As previously disclosed, on August 4, 2025, Datavault AI Inc., a Delaware corporation (the "Company"), entered into a Securities Purchase Agreement (the "Purchase Agreement") with certain institutional investors (the "Purchasers"), pursuant to which the Purchasers agreed to purchase from the Company in a registered direct offering (the "Offering"), senior secured convertible notes having an aggregate principal amount of $6,666,666 (the "Initial Notes") for an aggregate purchase price of $6,000,000 and senior secured convertible notes having an aggregate principal amount of $6,666,666 (the "Additional Notes", and together with the Initial Notes, the "Notes") for an aggregate purchase price of $6,000,000 upon satisfaction of certain closing conditions applicable to the Initial Notes and Additional Notes, respectively. The closing of Initial Notes (the "Initial Closing") occurred on August 6, 2025.

The Notes and Conversion Shares (as defined herein) were 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 "Commission") on July 7, 2025, and was declared effective by the Commission on July 9, 2025, the prospectus contained therein and a prospectus supplement relating to the Offering dated August 4, 2025.

Additional Closing

The closing of the Additional Notes (the "Additional Closing," and together with the Initial Closing, the "Closings") occurred, and the Additional Notes were issued, on September 30, 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 date of each Closing, 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 no Purchasers holds any Notes.

Pursuant to the Purchase Agreement, until the date that is 18 months after the date on which the Notes are no longer outstanding, the Purchasers have the right, but not the obligation, to participate in any issuance by the Company of any debt, preferred stock, shares of Common Stock or securities convertible into shares of Common Stock (a "Subsequent Financing") up to a maximum of 65% of such Subsequent Financing on the same terms, conditions and price provided to other investors in such Subsequent Financing.

Notes

The Notes carry a 10% original issue discount, and mature 18 months from the date of issuance. No interest accrues during the term of the Notes, unless an event of default occurs, in which case interest will accrue at a rate of 12% per annum. The obligations under these Notes rank senior to all other existing indebtedness and equity of the Company. The Notes are convertible at any time at the option of the holders thereof, in whole or in part, into such number of shares of Common Stock (the "Conversion Shares") at an initial conversion price equal to $1.00 per share (the "Conversion Price"). Alternatively, the Notes are convertible at the holder's election, at a price (the "Alternate Conversion Price") equal to the greater of (x) the Floor Price (as defined below) and (y) 80% of the lowest volume weighted adjusted price of the shares of Common Stock (the "VWAP") in the twenty (20) trading days prior to the applicable conversion date ("Alternate Conversions").

The conversion price of the Notes is subject to a floor price of $0.1019 (the "Floor Price").

In the event the Alternate Conversion Price would be lower than the Floor Price, the Company is required to compensate the holders of the Notes by paying the holders in cash an amount (the "Alternate Conversion Floor Amount") equal to the product obtained by multiplying (A) the VWAP on the day the holder delivers the applicable conversion notice and (B) the difference obtained by subtracting (I) the number of shares of Common Stock delivered (or to be delivered) to the holder on the applicable share delivery date with respect to such Alternate Conversion from (II) the quotient obtained by dividing (x) the applicable conversion amount that the holder has elected to be the subject of the applicable Alternate Conversion, by (y) the applicable Alternate Conversion Price without being limited by the Floor Price.