Arista (ANET) CFO Chantelle Breithaupt Vests RSUs; Withholds Shares

What Happened

• Chantelle Y. Breithaupt, Senior Vice President and CFO of Arista Networks (ANET), had restricted stock units (RSUs) vest on August 20, 2026. A total of 12,270 shares were issued upon vesting (10,920 + 1,350). To satisfy tax withholding obligations, 6,145 of those shares were withheld (disposed) at an indicated per-share value of $186.45, totaling $1,145,735. The transaction resulted in a net issuance to her of 6,125 shares (12,270 vested − 6,145 withheld).
• This was not an open-market sale for cash; it reflects routine tax-withholding on RSU vesting rather than a discretionary sale.

Key Details

• Transaction date: August 20, 2026; Form 4 filed August 24, 2026 (timely filed).
• Vesting/conversion lines (code M): 10,920 and 1,350 RSUs converted into common shares (total 12,270).
• Tax withholding (code F): 6,145 shares withheld at $186.45/share = $1,145,735.
• Net shares retained from this vesting: 6,125.
• Footnotes: F1 = each RSU converts to one share on vesting; F2 = shares withheld to satisfy tax withholding; F3/F4 = vesting schedule (25% vested 2/20/2025, then 6.25% quarterly thereafter).
• No evidence of open-market sale — withholding is a common, administrative disposition and not necessarily a bearish signal.

Context

• This was a vesting event for RSUs with shares withheld to cover taxes (a non-cash, routine action). For investors, purchases or open-market buys by insiders typically carry more informational weight than withholding transactions.