Arista Networks CFO Chantelle Breithaupt's Stock Transactions - May 2026

This Form 4 filing reports stock transactions by Arista Networks CFO Chantelle Breithaupt on May 20, 2026. The filing details the vesting of two restricted stock unit awards: 10,916 shares from RSU-1 and 1,350 shares from RSU-2, both converted to common stock at $0.00 per share. Additionally, 6,144 shares were sold at $141.58 per share to cover tax withholding obligations related to the vesting. Following these transactions, Breithaupt's direct holdings in Arista Networks common stock totaled 66,856 shares, with additional unvested RSUs of 76,424 and 18,900 shares respectively. The RSUs vest quarterly according to predetermined schedules, with the May 20, 2026 transactions representing quarterly vesting events. The filing was signed by an attorney-in-fact on May 22, 2026.