X0306 4 2021-09-01 0001101239 EQUINIX INC EQIX 0001751921 Miller Simon C/O EQUINIX, INC. ONE LAGOON DRIVE REDWOOD CITY CA 94065 1 Chief Accounting Officer Common Stock 2021-09-01 4 M 0 226 0 A 2539 D Common Stock 2021-09-01 4 M 0 86 0 A 2625 D Common Stock 2021-09-01 4 M 0 242 0 A 2867 D Common Stock 2021-09-01 4 M 0 272 0 A 3139 D Common Stock 2021-09-01 4 M 0 279 0 A 3418 D Common Stock 2021-09-02 4 S 0 4 852.5974 D 3414 D Common Stock 2021-09-02 4 S 0 9 853.7107 D 3405 D Common Stock 2021-09-02 4 S 0 17 855.0182 D 3388 D Common Stock 2021-09-02 4 S 0 24 855.9316 D 3364 D Common Stock 2021-09-02 4 S 0 40 856.9387 D 3324 D Common Stock 2021-09-02 4 S 0 29 857.8816 D 3295 D Common Stock 2021-09-02 4 S 0 28 858.9799 D 3267 D Common Stock 2021-09-02 4 S 0 42 859.9936 D 3225 D Common Stock 2021-09-02 4 S 0 31 860.9198 D 3194 D Common Stock 2021-09-02 4 S 0 23 862.1415 D 3171 D Common Stock 2021-09-02 4 S 0 36 863.1277 D 3135 D Common Stock 2021-09-02 4 S 0 75 864.1669 D 3060 D Common Stock 2021-09-02 4 S 0 61 865.0686 D 2999 D Common Stock 2021-09-02 4 S 0 62 866.1402 D 2937 D Common Stock 2021-09-02 4 S 0 22 867.0685 D 2915 D Common Stock 2021-09-02 4 S 0 26 868.0286 D 2889 D Common Stock 2021-09-02 4 S 0 9 869.5975 D 2880 D Common Stock 2021-09-02 4 S 0 4 870.4362 D 2876 D Restricted Stock Units 0 2021-09-01 4 M 0 226 0 D Common Stock 226 226 D Restricted Stock Unit 0 2021-09-01 4 M 0 86 0 D Common Stock 86 172 D Restricted Stock Unit 0 2021-09-01 4 M 0 242 0 D Common Stock 242 725 D Restricted Stock Units 0 2021-09-01 4 M 0 272 0 D Common Stock 272 816 D Restricted Stock Units 0 2021-09-01 4 M 0 279 0 D Common Stock 279 1390 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $852.16 to $853.01, inclusive. The reporting person undertakes to provide to Equinix, Inc, any security holder of Equinix 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 ranges set forth in footnotes 2 through 18 to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $853.36 to $854.16 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $854.41 to $855.39 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $855.43 to $856.42 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $856.43 to $857.42 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $857.43 to $858.38 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $858.465 to $859.45 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $859.475 to $860.47 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $860.48 to $861.465 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $861.495 to $862.49 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $862.57 to $863.57 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $863.63 to $864.63 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $864.64 to $865.57 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $865.65 to $866.63 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $866.66 to $867.425 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $867.68 to $868.59 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $869.28 to $870.27 inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $870.35 to $871.12 inclusive. 226 shares (12.5% of the total shares awarded) scheduled to vest on March 1, 2019 and an additional 12.5% each 6 months thereafter until fully vested, subject solely to continued service. Restricted stock unit award expires upon reporting person's termination of service. 87 shares (12.5% of the total shares awarded) scheduled to vest on March 1, 2019 and an additional 12.5% each 6 months thereafter until fully vested, subject solely to continued service. 242 shares (12.5% of the total shares awarded) Vested on March 2, 2020 and an additional 12.5% each 6 months thereafter until fully vested, subject solely to continued service. Vesting is dependent upon continuous active service as an employee or director of the Company or a subsidiary of the Company (Service) throughout the vesting period. The Restricted Stock Units shall vest as follows: 16.67% of the RSUs vesting on September 1, 2020 and an additional 16.67% of the RSUs vesting every 6 months thereafter until fully vested. Vesting is dependent upon continuous active service as an employee or director of the Company or a subsidiary of the Company (Service) throughout the vesting period. The Restricted Stock Units shall vest as follows: 16.67% of the RSUs vesting on September 1, 2021 and an additional 16.67% of the RSUs vesting every 6 months thereafter until fully vested. /s/ Samantha Lagocki, POA 2021-09-03