Breithaupt Chantelle Yvette 4

What Happened

• Chantelle Y. Breithaupt, Senior Vice President and Chief Financial Officer of Arista Networks, sold 8,890 shares in an open-market transaction on April 14, 2026. The reported weighted-average sale price was $155.02, for gross proceeds of approximately $1,378,164. This was a sale (not a purchase or option exercise).

Key Details

• Transaction date: April 14, 2026; Filing date: April 16, 2026 (timely filing).
• Transaction type/code: Sale (S) — open market/private sale reported.
• Price: reported weighted average $155.02; actual prices ranged $155.00–$155.06 (footnote).
• Total proceeds: ~$1,378,164.
• Shares owned after transaction: not provided in the information supplied.
• Notable footnotes:
  • F1: Sale was effected pursuant to a Rule 10b5-1 trading plan adopted Dec 11, 2025.
  • F2: Price is a weighted average; the reporting person will provide the breakdown of shares sold at each price upon request.

Context

• Sales under a 10b5-1 plan are pre-arranged and scheduled in advance, which often indicates the transaction follows a predetermined plan rather than an immediate view on the stock. Sales are common among executives for diversification or liquidity and are not, by themselves, a clear signal of future company performance.