X0306 4 2022-08-22 0 0001596532 Arista Networks, Inc. ANET 0001707744 Wassenaar Yvonne 5453 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 1 0 0 0 Common Stock 2022-08-22 4 M 0 576 0.0 A 576 D Restricted Stock Unit-1 0.0 2022-08-22 4 M 0 576 0.0 D Common Stock 576 1729 D Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. The reporting person was granted RSUs on July 21, 2022. 1/4th of the shares vested on August 20, 2022 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, or November 20. By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Yvonne Wassenaar 2022-08-24