SMSI · Smith Micro Software, Inc.

Shares withheld, at an average vesting price of $0.8685 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.8685 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.8685 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.70 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.72 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.70 per share, for the payment of income taxes.

Unrestricted stock award pursuant to the Smith Micro Software, Inc. Amended and Restated Omnibus Equity Incentive Plan

Shares withheld, at an average vesting price of $0.846 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.846 per share, for the payment of income taxes.

Original principal amount of the secured convertible note (in dollars).

Pursuant to a Securities Purchase Agreement, dated March 4, 2026, between Smith Micro Software, Inc. and the Buyer parties thereto, Smith Living Trust agreed to purchase a secured convertible note together with a warrant for an aggregate purchase price of $4,585,491.93. The purchase was completed and the securities were issued on March 10, 2026.

Assumes conversion of the full original principal amount of the secured convertible note into shares of common stock.

Pursuant to a Securities Purchase Agreement, dated March 4, 2026, between Smith Micro Software, Inc. and the Buyer parties thereto, Smith Living Trust agreed to purchase a secured convertible note together with a warrant for an aggregate purchase price of $4,585,491.93. The purchase was completed and the securities were issued on March 10, 2026.

Unrestricted stock award granted pursuant to the Company's Amended and Restated Omnibus Equity Incentive Plan.

Unrestricted stock award pursuant to the Company's Amended and Restated Omnibus Equity Incentive Plan.

Unrestricted stock award pursuant to the Company's Amended and Restated Omnibus Equity Incentive Plan.

Unrestricted stock award pursuant to the Company's Amended and Restated Omnibus Equity Incentive Plan.

Unrestricted stock award pursuant to the Company's Amended and Restated Omnibus Equity Incentive Plan.

Unrestricted stock award pursuant to the Company's Amended and Restated Omnibus Equity Incentive Plan.

Original principal amount of the secured convertible note (in dollars).

Pursuant to a Securities Purchase Agreement, dated March 4, 2026, between Smith Micro Software, Inc. and the Buyer parties thereto, the Reporting Person agreed to purchase a secured convertible note together with a warrant for an aggregate purchase price of $90,970.45. The purchase was completed and the securities were issued on March 6, 2026.

Assumes conversion of the full original principal amount of the secured convertible note into shares of common stock.

Pursuant to a Securities Purchase Agreement, dated March 4, 2026, between Smith Micro Software, Inc. and the Buyer parties thereto, the Reporting Person agreed to purchase a secured convertible note together with a warrant for an aggregate purchase price of $90,970.45. The purchase was completed and the securities were issued on March 6, 2026.

Shares of restricted stock forfeited in accordance with the terms of grant.

Shares of restricted stock forfeited in accordance with the terms of grant.

Shares withheld, at an average vesting price of $0.523 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.512 per share, for the payment of income taxes.

Shares of restricted stock forfeited in accordance with the terms of grant.

Shares of restricted stock forfeited in accordance with the terms of grant.

The common stock purchase warrant was purchased from the issuer by Smith Living Trust (for which William W. Smith, Jr. serves as co-trustee) together with a promissory note in exchange for aggregate consideration of approximately $1,000,000.

Shares withheld, at an average vesting price of $0.6225 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.6225 per share, for the payment of income taxes.

Shares sold for tax planning purposes in a series of transactions with a price range of $0.5800 to $0.5935, inclusive, with a weighted average price of $0.5813. The reporting person undertakes to provide to Smith Micro Software, 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.

Shares sold for tax planning purposes in a series of transactions with a price range of $0.6000 to $0.6324, inclusive, with a weighted average price of $0.6028. The reporting person undertakes to provide to Smith Micro Software, 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.

Restricted stock subject to performance-based vesting. Shares will vest in installments subject to satisfaction of performance criteria for the fourth quarter of 2025.

Restricted stock subject to performance-based vesting. Shares will vest in installments subject to satisfaction of performance criteria for the fourth quarter of 2025.

Shares withheld, at an average vesting price of $0.6995 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.6845 per share, for the payment of income taxes.

Shares withheld, at an average vesting price of $0.7752 per share, for the payment of income taxes.

Shares of restricted stock forfeited in accordance with the terms of grant.

Shares withheld, at an average vesting price of $0.7752 per share, for the payment of income taxes.

Shares of restricted stock forfeited in accordance with the terms of grant.

Pursuant to a Securities Purchase Agreement dated November 5, 2025, between Smith Micro Software, Inc. (the "Company") and the Purchaser parties thereto, Smith Living Trust (for which William W. Smith, Jr. serves as co-trustee) agreed to purchase 2,236,136 shares of common stock, together with a warrant to purchase an equal number of shares of common stock, at a purchase price of $0.6708 per share. The purchase was completed and the securities were issued on November 7, 2025.

Pursuant to a Securities Purchase Agreement dated November 5, 2025, between Smith Micro Software, Inc. (the "Company") and the Purchaser parties thereto, Smith Living Trust (for which William W. Smith, Jr. serves as co-trustee) agreed to purchase 2,236,136 shares of common stock, together with a warrant to purchase an equal number of shares of common stock, at a purchase price of $0.6708 per share. The purchase was completed and the securities were issued on November 7, 2025.

The warrant will become exercisable upon the date that it is approved by the Company's stockholders in accordance with applicable Nasdaq rules (the "Stockholder Approval Date").

Five (5) years after the Stockholder Approval Date.

Unrestricted stock award granted in lieu of fourth quarter 2025 cash compensation for service as a non-employee director.

Unrestricted stock award granted in lieu of fourth quarter 2025 cash compensation for service as a non-employee director.

Unrestricted stock award granted in lieu of fourth quarter 2025 cash compensation for service as a non-employee director.

Unrestricted stock award granted in lieu of fourth quarter 2025 cash compensation for service as a non-employee director.

Unrestricted stock award granted in lieu of fourth quarter 2025 cash compensation for service as a non-employee director.

Unrestricted stock award granted in lieu of fourth quarter 2025 cash compensation for service as a non-employee director.

On September 29, 2025, Mr. Smith made a gift of shares to the Smith Living Trust.

On September 29, 2025, Mr. Smith made a gift of shares to the Smith Living Trust.

The common stock purchase warrant was purchased from the issuer by Smith Living Trust (for which William W. Smith, Jr. serves as co-trustee) together with a promissory note in exchange for aggregate consideration of approximately $433,000.