
Arista's Bechtolsheim sells 260,000 shares
The move
A Nov. 9 SEC filing shows Arista Networks co-founder Andreas von Bechtolsheim sold 260,000 shares of the company in 16 separate trades on Nov. 5, at weighted-average prices ranging from $159.11 to $171.45 per transaction. The filing says the sales were made under a Rule 10b5-1 trading plan he adopted on Feb. 20, 2026, through a family trust for which he is trustee. After the sales, the trust still held about 180 million Arista shares.
Why it matters
Pre-arranged trading plans like this one are routine and don't necessarily signal a change in view, but the size of the sale is a reminder of how much Arista stock is still concentrated with its founders.
The bear case
Because the sale was set up months in advance under a 10b5-1 plan, it says nothing about Bechtolsheim's current view of Arista's prospects.
What to watch
Arista's next Form 4 filings for signs the selling pace is changing.
