X0508 4 2026-02-25 0 0001596532 Arista Networks, Inc. ANET 0001707744 Wassenaar Yvonne 5453 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 1 0 0 0 1 Common Stock 2026-02-25 4 S 0 70 129.407 D 14319 D Common Stock 2026-02-25 4 S 0 49 130.1183 D 14270 D Common Stock 2026-02-25 4 S 0 357 131.5609 D 13913 D Common Stock 2026-02-25 4 S 0 835 132.6568 D 13078 D Common Stock 2026-02-25 4 S 0 504 133.3542 D 12574 D The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.82 to $129.76, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, 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 range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.91 to $130.71, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, 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 range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $131.03 to $132.01, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, 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 range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.03 to $133.00, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, 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 range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.03 to $133.62, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, 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 range set forth in this footnote. By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Yvonne Wassenaar 2026-02-27