Arista Networks: CEO Ullal Jayshree sold 460,374 shares

What happened The filing reports that Ullal Jayshree, CEO and chairperson, sold 460,374 shares of Arista Networks on Oct 6, 2026, in multiple open-market transactions for aggregate proceeds of $97,642,614. Sales were reported as code S (sale) on the Form 4.

Key details

• Transaction date: Oct 6, 2026. Filing date: Oct 8, 2026; the filing does not indicate it was late.
• Prices: weighted average prices reported; individual sales ranged approximately from $211.00 to $213.22 per share (see footnotes for exact ranges and per-block weighted averages).
• Shares sold (by reported blocks): 13,179; 51,805; 781; 13,179; 51,805; 781; 65,897; 259,045; 3,902 (total 460,374 shares).
• Proceeds by reported blocks (as listed): $2,785,516; $10,996,450; $166,403; $2,785,516; $10,996,450; $166,403; $13,928,003; $54,986,498; $831,375 (total $97,642,614).
• Ownership after the transaction: not stated in this filing.
• relevant footnotes from the filing:
  • Sales were effected pursuant to a Rule 10b5-1 trading plan entered Nov 14, 2025, for the benefit of relatives (footnotes F1, F6).
  • Price ranges and weighted averages are described in footnotes (F2, F4, F5) with specific per-share ranges.
  • Several blocks are held in or sold from trusts for family members; the reporting person serves as trustee or co-trustee and disclaims beneficial ownership of those trust-held shares (footnotes F3, F7, F8).

Why it may matter

• The filing shows open-market sales executed under a Rule 10b5-1 plan rather than option exercises or gifts.
• The filing does not show why the insider traded or why the company acted.