Arista Networks, Inc.·4

Feb 27, 7:18 PM ET

Wassenaar Yvonne 4

4 · Arista Networks, Inc. · Filed Feb 27, 2026

Research Summary

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Arista Networks Director Yvonne Wassenaar Sells Shares

What Happened
Yvonne Wassenaar, a director of Arista Networks (ANET), sold a total of 1,815 shares in open-market transactions on February 25, 2026, generating gross proceeds of $240,380. The sales were executed in five tranches: 70 shares @ $129.41 ($9,058); 49 shares @ $130.12 ($6,376); 357 shares @ $131.56 ($46,967); 835 shares @ $132.66 ($110,768); and 504 shares @ $133.35 ($67,211). These were disposals (sales), which are often routine rather than an explicit signal of company outlook.

Key Details

  • Transaction date: February 25, 2026; Form 4 filed February 27, 2026 (timely filed within the usual 2-business-day window).
  • Total shares sold: 1,815 for total proceeds of $240,380. Individual weighted-average prices shown above.
  • Footnotes: trades were made pursuant to a Rule 10b5-1 trading plan adopted Nov 21, 2025 (F1). Each tranche shows a weighted-average price and a price range for the multiple executions (F2–F6); the filer offers to provide a breakdown of quantities at each price upon request.
  • Shares owned after the transaction: not provided in the summary data available here.
  • Transaction code: S = Sale.

Context
Sales under a pre-established 10b5-1 plan are commonly used by insiders to systematically sell shares and are generally viewed as routine rather than a direct indicator of insider sentiment. For retail investors, purchases usually carry more weight as affirmative signals; this filing documents a planned disposal of stock rather than an opportunistic purchase.

Insider Transaction Report

Form 4
Period: 2026-02-25
Transactions
  • Sale

    Common Stock

    [F1][F2]
    2026-02-25$129.41/sh70$9,05814,319 total
  • Sale

    Common Stock

    [F1][F3]
    2026-02-25$130.12/sh49$6,37614,270 total
  • Sale

    Common Stock

    [F1][F4]
    2026-02-25$131.56/sh357$46,96713,913 total
  • Sale

    Common Stock

    [F1][F5]
    2026-02-25$132.66/sh835$110,76813,078 total
  • Sale

    Common Stock

    [F1][F6]
    2026-02-25$133.35/sh504$67,21112,574 total
Footnotes (6)
  • [F1]The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
  • [F2]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.82 to $129.76, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  • [F3]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.91 to $130.71, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  • [F4]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $131.03 to $132.01, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  • [F5]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.03 to $133.00, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  • [F6]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.03 to $133.62, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Signature
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Yvonne Wassenaar|2026-02-27

Documents

1 file
  • 4
    edgardoc.xmlPrimary

    PRIMARY DOCUMENT