X0306 4 2019-09-03 0001101239 EQUINIX INC EQIX 0001751921 Miller Simon C/O EQUINIX, INC. ONE LAGOON DRIVE REDWOOD CITY CA 94065 0 1 0 0 Chief Accounting Officer Common Stock 2019-09-03 4 M 0 262 0 A 951 D Common Stock 2019-09-03 4 M 0 212 0 A 1163 D Common Stock 2019-09-03 4 M 0 226 0 A 1389 D Common Stock 2019-09-03 4 M 0 87 0 A 1476 D Common Stock 2019-09-03 4 M 0 242 0 A 1718 D Common Stock 2019-09-04 4 S 0 475 564.1148 D 1243 D Restricted Stock Units 0 2019-09-03 4 M 0 262 0 D Common Stock 262 262 D Restricted Stock Units 0 2019-09-03 4 M 0 212 0 D Common Stock 212 636 D Restricted Stock Units 0 2019-09-03 4 M 0 226 0 D Common Stock 226 1130 D Restricted Stock Units 0 2019-09-03 4 M 0 87 0 D Common Stock 87 519 D Restricted Stock Units 0 2019-09-03 4 M 0 242 0 D Common Stock 242 1693 D Shares were sold pursuant to a 10b5-1 Trading Plan in order to raise funds to pay the required withholding tax pursuant to the vesting of RSUs. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $563.68 to $564.20 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 this footnotes to this Form 4. 262 shares (12.5% of the total shares awarded) vested on September 3, 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 services. 212 shares (12.5% of the total shares awarded) vested on September 3, 2019 and an additional 12.5% each 6 months thereafter until fully vested, subject solely to continued service. 226 shares (12.5% of the total shares awarded) vested on September 3, 2019 and an additional 12.5% each 6 months thereafter until fully vested, subject solely to continued service. 87 shares (12.5% of the total shares awarded) vested on September 3, 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 September 3, 2019 and an additional 12.5% each 6 months thereafter until fully vested, subject solely to continued service. Samantha Lagocki, Attorney-in-Fact 2019-09-05