X0306 4 2021-02-16 0 0001289490 Extra Space Storage Inc. EXR 0001330121 Margolis Joseph D 2795 EAST COTTONWOOD PARKWAY SUITE 300 SALT LAKE CITY UT 84121 0 1 0 0 Chief Executive Officer Common Stock 2021-02-16 4 F 0 1281 116.80 D 32728 D Common Stock 2021-02-16 4 F 0 1622 116.80 D 31106 D Common Stock 2021-02-16 4 F 0 1703 116.80 D 29403 D Common Stock 2021-02-16 4 A 0 24534 117.19 A 53937 D Common Stock 2021-02-16 4 A 0 10880 117.19 A 64817 D Common Stock 2200 I J Margolis & K Margolis TTEE Common Stock 100000 I Cove Hollow Lane I, LLC Represents shares withheld by the Issuer in payment of the tax liability arising in connection with the settlement of vested restricted stock awards. Restricted stock awards vest 25% annually over four years, beginning on the first anniversary of the grant date 2/12/2020. Represents shares withheld by the Issuer in payment of the tax liability arising in connection with the settlement of vested restricted stock awards. Restricted stock awards vest 25% annually over four years, beginning on the first anniversary of the grant date 2/14/2018. Represents shares withheld by the Issuer in payment of the tax liability arising in connection with the settlement of vested restricted stock awards. Restricted stock awards vest 25% annually over four years, beginning on the first anniversary of the grant date 2/15/2017. Represents the number of shares of common stock issued upon the vesting of performance stock units (PSUs). Each PSU represented a contingent right to receive shares of the Issuer common stock. The PSUs were originally granted on February 14, 2018 and were eligible to vest based on the Issuer achievement of certain performance objectives during the three-year performance period ending December 31, 2020. On February 16, 2021, the Compensation Committee of the Board of Directors of the Issuer certified the Issuer achievement relative to the applicable performance objectives and approved the vesting of the PSUs with respect to these shares. Restricted stock awards vest 25% annually over four years, beginning on the first anniversary of the grant date. Shares held in J Margolis & K Margolis TTEE Joseph Daniel Margolis Revocab U/A DTD 05/24/2013. Shares held in Cove Hollow Lane I, LLC. Grace Kunde - attorney in fact 2021-02-18