On July 14, Arista Networks declined 3.01% in regular trading, trading at $181.43/share with turnover of $1.264 billion. The stock came under pressure from concentrated executive selling and broad communication equipment sector weakness.

CEO Jayshree Ullal filed Form 144 notices for planned sales totaling approximately 477,000 shares worth roughly $89.5 million in early July alone, bringing her cumulative three-month reduction to approximately 1.49 million shares across six transactions. Co-founder and board member Andreas Bechtolsheim also sold 220,000 shares in late May. The heavy insider selling weighed on market sentiment.

Sector-wide selling compounded the pressure, with Applied Optoelectronics down 8.26%, Nokia down 6.19%, Lumentum down 4.57%, Ondas Holdings down 4.34%, and Cisco down 1.67%. Despite TD Cowen raising its price target to $210 from $200 on July 13 while maintaining a Buy rating, broader sector headwinds and persistent insider selling prevailed.

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