#1 Represents 131 shares of issuer's common stock ("Common Stock") withheld in satisfaction of the applicable withholding taxes on certain shares of Common Stock that became issuable on January 4, 2024 pursuant to the terms of the January 4, 2021 Restricted Stock Unit Issuance Agreement between the reporting person and the issuer. The issuable shares were previously reported as Table I securities at the time the restricted stock units were granted, and accordingly the issuance of those shares is not a reportable transaction on this Form 4.

#2 Represents 4,964 shares of Common Stock and 3,312 shares of Common Stock underlying restricted stock units which will vest and become issuable in accordance with their terms.

#1 Represents 364 shares of the issuer's common stock ("Common Stock") withheld in satisfaction of the applicable withholding taxes on certain shares of Common Stock that became issuable on January 3, 2025 pursuant to the terms of the January 3, 2022 and January 3, 2023 Restricted Stock Unit Issuance Agreements, respectively, between the reporting person and the issuer. The issuable shares were previously reported as Table I securities at the time the restricted stock units ("RSUs") were granted, and accordingly the issuance of those shares is not a reportable transaction on this Form 4.

#2 Represents 7,186 shares of Common Stock and 3,966 shares of the Common Stock underlying RSUs which will vest and become issuable in accordance with their terms.

#1 Represents (i) 466 shares of Common Stock subject to the 2021 Restricted Stock Units ("RSU") that vested upon the attainment of a certain performance goal based on average return on equity ("ROE") measured over the 2021 calendar year and continued service by the reporting person through December 31, 2023 and (ii) 817 shares of Common Stock subject to 2021 RSUs that vested upon the attainment of a certain performance goal based on relative total shareholder return ("TSR") measured over the period including the 2021 calendar year and continued service by the reporting person through December 31, 2023.

#2 Represents (i) 165 shares of Common Stock withheld by the issuer in satisfaction of the applicable withholding taxes on shares of Common Stock that became issuable pursuant to the vesting of the 2021 ROE RSUs reported on this Form 4 and (ii) 290 shares of Common Stock withheld by the issuer in satisfaction of the applicable withholding taxes on shares of Common Stock that became issuable pursuant to the vesting of the 2021 TSR RSUs reported on this Form 4.

#3 Represents (i) 5,792 shares of Common Stock; (ii) 360 shares of Common Stock acquired in a transaction exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended, under the SJW Group 2023 Employee Stock Purchase Plan; and (iii) 3,312 shares of Common Stock underlying RSUs that will vest and become issuable in accordance with their terms.

#1 Represents (i) 466 shares of Common Stock subject to the 2021 Restricted Stock Units ("RSU") that vested upon the attainment of a certain performance goal based on average return on equity ("ROE") measured over the 2021 calendar year and continued service by the reporting person through December 31, 2023 and (ii) 817 shares of Common Stock subject to 2021 RSUs that vested upon the attainment of a certain performance goal based on relative total shareholder return ("TSR") measured over the period including the 2021 calendar year and continued service by the reporting person through December 31, 2023.

#2 Represents (i) 165 shares of Common Stock withheld by the issuer in satisfaction of the applicable withholding taxes on shares of Common Stock that became issuable pursuant to the vesting of the 2021 ROE RSUs reported on this Form 4 and (ii) 290 shares of Common Stock withheld by the issuer in satisfaction of the applicable withholding taxes on shares of Common Stock that became issuable pursuant to the vesting of the 2021 TSR RSUs reported on this Form 4.

#3 Represents (i) 5,792 shares of Common Stock; (ii) 360 shares of Common Stock acquired in a transaction exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended, under the SJW Group 2023 Employee Stock Purchase Plan; and (iii) 3,312 shares of Common Stock underlying RSUs that will vest and become issuable in accordance with their terms.