XERS

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.50 to $8.60, inclusive. 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.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

Includes 2,113 shares acquired on June 30, 2026 under the issuer's 2018 Employee Stock Purchase Plan, as amended.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in equal annual installments over three years, subject to continued service on the Company's Board of Directors through such vesting date.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in equal annual installments over three years, subject to continued service on the Company's Board of Directors through such vesting date.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 8, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.92 to $8.19, inclusive. 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.

Includes 1,288 shares acquired on June 30, 2026 under the issuer's 2018 Employee Stock Purchase Plan, as amended.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person as of September 4, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.000 to $8.10, inclusive. 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.

Includes 3,401 shares acquired on June 30, 2026 under the issuer's 2018 Employee Stock Purchase Plan, as amended.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.970 to $6.170, inclusive. 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.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

These stock options were acquired pursuant to a grant under the Plan. These stock options shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.970 to $6.170, inclusive. 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.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 4, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.960 to $6.170, inclusive. 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.

These shares were acquired pursuant to a restricted stock unit grant under the Company's 2018 Stock Option and Incentive Plan (the "Plan"). Each restricted stock represents a contingent right to receive one share of the Company's common stock. These shares shall vest in full upon the earlier to occur of June 4, 2026 or the date of the Company's next annual meeting of stockholders, subject to continued service through such vesting date.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 12, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.810 to $5.960, inclusive. 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.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.980 to $6.180, inclusive. 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.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.100 to $6.320, inclusive. 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.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.890 to $6.085, inclusive. 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.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.290 to $5.630, inclusive. 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.

The reporting person received the stock options on December 10, 2020 pursuant to an award under the Company's 2018 Stock Option/Stock Issuance Plan (the "2018 Plan"). 50% of the options vested on the first anniversary of the vesting commencement date, and the remaining 50% of options vested on the second anniversary of the vesting commencement date, in each case subject to continued employment through such vesting date.

The reporting person received the stock options on August 26, 2020 pursuant to an award under the 2018 Plan. 50% of the options vested on the first anniversary of the vesting commencement date, 25% of the options vested on the 18-month anniversary of the vesting commencement date, and the remaining 25% of options vested on the two-year anniversary of the vesting commencement date, in each case subject to continued employment through such vesting date.

The reporting person received the stock options on December 10, 2020 pursuant to an award under the Company's 2018 Stock Option/Stock Issuance Plan. 50% of the options vested on the first anniversary of the vesting commencement date, and the remaining 50% of options vested on the second anniversary of the vesting commencement date, in each case subject to continued employment through such vesting date.

The reporting person received the stock options on January 31, 2018 pursuant to an award under the Company's 2011 Stock Option/Stock Issuance Plan. 25% of the options vested on the first anniversary of the vesting commencement date, and the remaining 75% of options vested in equal monthly installments over the following three (3) years, in each case subject to continued employment through such vesting date.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.920 to $6.910, inclusive. 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.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of February 24, 2026.

The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.250 to $7.590, inclusive. 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.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.

Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units vested as of January 31, 2026.