SPRB · Spruce Biosciences, Inc.

Shares acquired by the Reporting Person pursuant to the Issuer's 2020 Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).

The shares vest on the first anniversary of the Grant Date, provided that the Option will in any case be fully vested on the date of Company's 2027 annual stockholder meeting, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

The shares vest on the first anniversary of the Grant Date, provided that the Option will in any case be fully vested on the date of Company's 2027 annual stockholder meeting, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

The shares vest on the first anniversary of the Grant Date, provided that the Option will in any case be fully vested on the date of Company's 2027 annual stockholder meeting, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

The shares vest on the first anniversary of the Grant Date, provided that the Option will in any case be fully vested on the date of Company's 2027 annual stockholder meeting, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

The shares vest on the first anniversary of the Grant Date, provided that the Option will in any case be fully vested on the date of Company's 2027 annual stockholder meeting, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

25% of the total number of restricted stock units ("RSUs") will vest on March 15, 2027. 25% of the total number of RSUs will vest on each of March 15, 2028, March 15, 2029 and March 15, 2030, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan) as of each such vesting date.

Shares acquired by the Reporting Person pursuant to the Issuer's 2020 Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c). The Reporting Person acquired the maximum shares allowable pursuant to Section 423 of the Internal Revenue Code.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 14, 2023, the Reporting Person was granted a total of 9,658 RSUs. 50% or 4,784 of the total RSUs are performance-based and all vested on December 10, 2024. An addition of 50% or 4,784 of the total RSUs are time-based. 25% of which vested on December 15, 2024, and in equal annual installments thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 1,196 shares vested and 608 shares were withheld for taxes, resulting in a net issuance of 588 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 14, 2023, the Reporting Person was granted a total of 4,106 RSUs. 50% or 2,053 of the total RSUs are performance-based and all vested on December 10, 2024. An addition of 50% or 2,053 of the total RSUs are time-based. 25% of which vested on December 15, 2024, and in equal annual installments thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 513 shares vested and 184 shares were withheld for taxes, resulting in a net issuance of 329 shares.

On December 5, 2022, the Reporting Person was granted 5,920 time-based restricted stock units ("RSUs"), subject to a 4-year vesting schedule, with 25% of the total number of RSUs vested on December 15, 2023 (the "Annual Vesting Date") and 25% of the total number of RSUs to vest in annual installments on each anniversary of the Annual Vesting Date thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 1,480 RSUs vested, with 752 shares withheld for taxes, resulting in a net issuance of 728 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 14, 2023, the Reporting Person was granted a total of 9,658 RSUs. 50% or 4,784 of the total RSUs are performance-based and all vested on December 10, 2024. An addition of 50% or 4,784 of the total RSUs are time-based. 25% of which vested on December 15, 2024, and in equal annual installments thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 1,196 shares vested and 608 shares were withheld for taxes, resulting in a net issuance of 588 shares.

On December 5, 2022, the Reporting Person was granted 1,986 time-based restricted stock units ("RSUs"), subject to a 4-year vesting schedule, with 25% of the total number of RSUs vested on December 15, 2023 (the "Annual Vesting Date") and 25% of the total number of RSUs to vest in annual installments on each anniversary of the Annual Vesting Date thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 496 RSUs vested, with 178 shares withheld for taxes, resulting in a net issuance of 318 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 14, 2023, the Reporting Person was granted a total of 4,106 RSUs. 50% or 2,053 of the total RSUs are performance-based and all vested on December 10, 2024. An addition of 50% or 2,053 of the total RSUs are time-based. 25% of which vested on December 15, 2024, and in equal annual installments thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 513 shares vested and 184 shares were withheld for taxes, resulting in a net issuance of 329 shares.

On December 5, 2022, the Reporting Person was granted 5,920 time-based restricted stock units ("RSUs"), subject to a 4-year vesting schedule, with 25% of the total number of RSUs vested on December 15, 2023 (the "Annual Vesting Date") and 25% of the total number of RSUs to vest in annual installments on each anniversary of the Annual Vesting Date thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 1,480 RSUs vested, with 752 shares withheld for taxes, resulting in a net issuance of 728 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 5, 2022, the Reporting Person was granted 1,986 time-based restricted stock units ("RSUs"), subject to a 4-year vesting schedule, with 25% of the total number of RSUs vested on December 15, 2023 (the "Annual Vesting Date") and 25% of the total number of RSUs to vest in annual installments on each anniversary of the Annual Vesting Date thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 496 RSUs vested, with 178 shares withheld for taxes, resulting in a net issuance of 318 shares.

On December 14, 2023, the Reporting Person was granted a total of 4,106 RSUs. 50% or 2,053 of the total RSUs are performance-based and all vested on December 10, 2024. An addition of 50% or 2,053 of the total RSUs are time-based. 25% of which vested on December 15, 2024, and in equal annual installments thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 513 shares vested and 184 shares were withheld for taxes, resulting in a net issuance of 329 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 5, 2022, the Reporting Person was granted 1,986 time-based restricted stock units ("RSUs"), subject to a 4-year vesting schedule, with 25% of the total number of RSUs vested on December 15, 2023 (the "Annual Vesting Date") and 25% of the total number of RSUs to vest in annual installments on each anniversary of the Annual Vesting Date thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 496 RSUs vested, with 178 shares withheld for taxes, resulting in a net issuance of 318 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

On December 5, 2022, the Reporting Person was granted 5,920 time-based restricted stock units ("RSUs"), subject to a 4-year vesting schedule, with 25% of the total number of RSUs vested on December 15, 2023 (the "Annual Vesting Date") and 25% of the total number of RSUs to vest in annual installments on each anniversary of the Annual Vesting Date thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 1,480 RSUs vested, with 752 shares withheld for taxes, resulting in a net issuance of 728 shares.

On December 14, 2023, the Reporting Person was granted a total of 9,658 RSUs. 50% or 4,784 of the total RSUs are performance-based and all vested on December 10, 2024. An addition of 50% or 4,784 of the total RSUs are time-based. 25% of which vested on December 15, 2024, and in equal annual installments thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). On December 15, 2025, 1,196 shares vested and 608 shares were withheld for taxes, resulting in a net issuance of 588 shares.

Each RSU represents a contingent right to receive one share of common stock of the Issuer.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

25% of the total number of RSUs vested on grant. 25% of the total number of RSUs will vest on December 15, 2026, December 15, 2027 and December 15, 2028, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan) as of each such vesting date. On December 11, 2025, 1,900 shares vested and 680 shares were withheld for taxes, resulting in a net issuance of 1,220 shares.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

25% of the total number of RSUs vested on grant. 25% of the total number of RSUs will vest on December 15, 2026, December 15, 2027 and December 15, 2028, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan) as of each such vesting date. On December 11, 2025, 1,900 shares vested and 680 shares were withheld for taxes, resulting in a net issuance of 1,220 shares.

Each RSU represents a contingent right to receive one share of SPRB common stock.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Each RSU represents a contingent right to receive one share of SPRB common stock.

25% of the total number of RSUs vested on grant. 25% of the total number of RSUs will vest on December 15, 2026, December 15, 2027 and December 15, 2028, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan) as of each such vesting date. On December 11, 2025, 4,950 shares vested and 2,194 shares were withheld for taxes, resulting in a net issuance of 2,756 shares.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the stock option vest over a four-year period commencing January 3, 2022, with 1/4th of the shares vested on January 3, 2023 and 1/36th of the remaining shares vesting on a monthly basis, subject to Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan).

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares vest in equal monthly installments over a three year period such that the option is fully vested on the third anniversary of May 25, 2023, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares vest in equal monthly installments over a three year period such that the option is fully vested on the third anniversary of May 25, 2023, subject to the Reporting Person's Continuous Service (as defined in the 2020 Equity Incentive Plan (the "Plan")) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan).

Each RSU represents a contingent right to receive one share of SPRB common stock.

25% of the total number of RSUs vested on grant. 25% of the total number of RSUs will vest on December 15, 2026, December 15, 2027 and December 15, 2028, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan) as of each such vesting date. On December 11, 2025, 4,950 shares vested and 2,194 shares were withheld for taxes, resulting in a net issuance of 2,756 shares.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

1/48th of the shares vest on a monthly basis from January 3, 2022, subject to Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan).

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

1/48th of the shares vest on a monthly basis from December 16, 2021, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan).

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares vest upon the achievement of specified performance goals, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2020 Equity Incentive Plan). 50% or 1,666 shares of the total shares vested on November 26, 2023. 50% or 1,666 shares of the total shares did not vest as the relevant performance goal was not achieved.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.

Effective August 4, 2025, the Issuer effected a reverse stock split (the "Reverse Split") whereby every seventy-five shares of its issued and outstanding Common Stock were automatically combined into one share of Common Stock. In connection with the Reverse Split, each stock option to purchase 75 shares of Common Stock was automatically combined into a stock option to purchase one share of Common Stock and the exercise prices of such options were multiplied by seventy-five.

The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on December 11, 2025 (the "Repricing Date"). The Option Repricing applies to options with exercise prices of $106.09 per share or greater held by employees and directors of the Issuer who remained in continuous service with the Company as of the Repricing Date.

Pursuant to the Option Repricing, the exercise price of the repriced options has been amended to reduce the exercise price to $104.13 per share, the thirty (30)-day trailing volume-weighted average price of the Common Stock on the Nasdaq Capital Market on the Repricing Date. However, if an optionholder exercises a repriced option before the end of a retention period of one year (which period may be shorter in certain circumstances), such optionholder will be required to pay the original exercise price per share of such repriced option. No other changes were made to the repriced options in connection with the Option Repricing, including with respect to the vesting schedules, expiration dates or number of shares underlying such repriced options.

The shares subject to the option are fully vested and exercisable.