Arista Networks Officer Chantelle Breithaupt Files Form 144 to Sell $253K in Stock

Arista Networks, Inc. ($ANET) Form 144 Analysis

Transaction Overview

On October 6, 2026, Arista Networks officer Chantelle Breithaupt filed a Form 144 notice disclosing an intention to sell 1,224 shares of common stock through Morgan Stanley Smith Barney LLC. The aggregate market value of the proposed transaction is $253,245.60, representing an estimated price of $206.90 per share.

Key Details

• Security: Common Stock
• Shares to be Sold: 1,224
• Aggregate Value: $253,245.60
• Acquisition Origin: Shares originated from Restricted Stock Units (RSUs) that vested on August 20, 2026.
• Trading Plan: Executed pursuant to a Rule 10b5-1 trading plan adopted on June 2, 2026.
• Prior Activity: Breithaupt previously sold 612 shares on September 1, 2026, for gross proceeds of $119,811.24 under the same 10b5-1 arrangement.

Market & Governance Significance

The transaction significance is evaluated as Low. The proposed sale represents an immaterial fraction of Arista Networks' total shares outstanding (1,261,224,648 shares). Because the disposition is pre-planned under Rule 10b5-1 and stems from equity compensation vesting, it represents standard executive diversification rather than a shift in fundamental sentiment.