DVLT · Datavault AI Inc.

The shares reported herein were transferred by Scilex Holding Company ("Scilex") to Vivasor, Inc. ("Vivasor") on August 20, 2026 as a drawdown under that certain promissory note (revolving line of credit) issued by Vivasor in favor of Scilex on August 8, 2026.

Received in exchange for 18,413 shares of NYIAX, Inc. ("NYIAX") common stock in connection with the merger of NYIAX with and into DVLT Merger Sub Inc., a wholly owned subsidiary of the Issuer ("Merger Sub"), pursuant to that certain Agreement and Plan of Merger, dated as of March 18, 2026, as amended from time to time (the "Merger Agreement"), by and among the Issuer, Merger Sub and NYIAX. At the effective time of the merger contemplated by the Merger Agreement, the Reporting Person, as a stockholder of NYIAX, became entitled to receive a number of shares of the Issuer's common stock equal to the exchange ratio (determined pursuant to the Merger Agreement) for each share of NYIAX common stock held by the Reporting Person. The exchange ratio was approximately 1.41 shares of Issuer common stock for each share of NYIAX common stock.

Mr. Bradley, as an officer and member of the board of directors of EOS Technology Holdings Inc. ("EOS"), may be deemed to share voting and investment power over shares of common stock beneficially owned by EOS. Pursuant to a Letter Agreement dated July 29, 2026, EOS may elect to receive shares of Common Stock in lieu of cash in satisfaction of a quarterly earnout payment obligation owed by the issuer to EOS. If EOS subsequently distributes any such shares to its shareholders, the number of shares reported herein as indirectly beneficially owned by Mr. Bradley through EOS would decrease to reflect the reduction in EOS's holdings. Such a decrease would result from the distribution by EOS and would not necessarily indicate that Mr. Bradley sold shares in an open market transaction.

Mr. Bradley disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.3901 to $0.3903, inclusive. The Reporting Person undertakes to provide to Datavault AI Inc., any security holder of Datavault AI Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.4067 to $0.4070. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported represents the weighted average sale price for shares sold at prices ranging from $0.4965 to $0.5547 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range for such transaction.

The price reported represents the weighted average sale price for shares sold at prices ranging from $0.5632 to $0.5675 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range for such transaction.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

1,213,236 LTIP Shares of the issuer were received by Mr. Bradley's spouse, Sonia Choi ("Ms. Choi"), as compensation for Ms. Choi's service as an employee of the issuer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan. The LTIP Shares associated with the Grant are scheduled to vest in equal installments, from the period from September 20, 2026 and ending on September 20, 2029, on each March 20th, June 20th, September 20th and December 20th, so long as Ms. Choi remains in the service of the issuer on each such date.

This amendment is being filed to correct the indication of the character of the transaction reported in Table I, Column 4 of the Form 4 filed by Mr. Bradley on April 22, 2026, which erroneously indicated the character of the transaction reported with transaction code "D". The transaction reported was an acquisition and the correct indication of the character of such transaction is transaction code "A".

2,588,235 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received by Nathaniel Bradley ("Mr. Bradley") as compensation for Mr. Bradley's service as a member of the issuer's board of directors and as an officer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on September 20, 2026 and ending on September 20, 2029, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

1,100,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as an officer of the issuer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on September 20, 2026 and ending on September 20, 2029, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

1,955,882 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors and as an officer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on September 20, 2026 and ending on September 20, 2029, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

250,000 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal quarterly installments over one year, beginning on the first to occur of March 20th, June 20th, September 20th or December 20th after the Grant Date and thereafter on each March 20th, June 20th, September 20th and December 20th until fully vested, so long as the reporting person remains in the service of the issuer on each such date.

Represents shares of Common Stock of the issuer sold to the open market by the issuer on behalf of Ms. Choi to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by Mr. Bradley or Ms. Choi.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.6248 to $0.6324. The reporting person and spouse of the reporting person, Sonia Choi ("Ms. Choi") undertake to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of common stock, par value $0.0001 per share ("Common Stock"), of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.6248 to $0.6324. The reporting person and spouse of the reporting person, Sonia Choi ("Ms. Choi") undertake to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of common stock, par value $0.0001 per share, of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.6248 to $0.6324. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of common stock, par value $0.0001 per share, of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.6248 to $0.6324. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of common stock, par value $0.0001 per share, of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.8913 to $0.9419. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of common stock, par value $0.0001 per share ("Common Stock"), of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.8913 to $0.9419. The reporting person and the spouse of the reporting person, Sonia Choi ("Ms. Choi") undertake to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of Common Stock of the issuer sold to the open market by the issuer on behalf of Ms. Choi to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by Mr. Bradley or Ms. Choi.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.8913 to $0.9419. The reporting person and the spouse of the reporting person, Sonia Choi ("Ms. Choi") undertake to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Represents shares of common stock, par value $0.0001 per share, of the issuer sold to the open market by the issuer on behalf of the reporting person to satisfy tax obligations in connection with vesting of equity awards and was not a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.8913 to $0.9419. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

211,203 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

211,203 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

211,203 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

211,203 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

1,336,441 LTIP Shares of the issuer were received by Mr. Bradley's spouse, Sonia Choi ("Ms. Choi"), as compensation for Ms. Choi's service as an employee of the issuer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan. The LTIP Shares associated with the Grant are scheduled to vest in equal installments, from the period from March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as Ms. Choi remains in the service of the issuer on each such date.

3,823,798 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received by Nathaniel Bradley ("Mr. Bradley") as compensation for Mr. Bradley's service as a member of the issuer's board of directors and as an officer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

2,698,543 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors and as an officer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

211,203 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

764,812 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as an officer pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.

211,203 shares (the "LTIP Shares") of common stock, par value $0.0001 per share, of the issuer were received as compensation for the reporting person's service as a member of the issuer's board of directors pursuant to the issuer's 2018 Long-Term Stock Incentive Plan (the "Grant"). The LTIP Shares associated with the Grant are scheduled to vest in equal installments, beginning on March 20, 2026 and ending on December 20, 2028, on each March 20th, June 20th, September 20th and December 20th, so long as the reporting person remains in the service of the issuer on each such date.