SEC INSIDER TRANSACTIONS

Arista Networks, Inc. (ANET) Insider Transactions

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ANET · Arista Networks, Inc.

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Roles: director,officer,ten_percent_owner,otherOwner nameOfficer titleOwnership: D, I, unknownoriginal or amendedTransaction fromTransaction throughFiled fromFiled throughMinimum quantityMaximum quantityMinimum priceMaximum priceMinimum calculated valueMaximum calculated valueResults per page (1–100)

OR within codes/roles; AND between categories. Roles apply to buyers and sellers. Owner predicates match the same owner. Missing values fail numeric/date filters. Value is quantity × reported price for non-derivative rows only; derivative values are unknown. Amendments stay separate; joint owners do not duplicate rows.

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Stale snapshot · Covered: filings 2026-10-15 to 2026-11-13 · 5 filings · fetched 2026-11-13T16:38:37Z

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Recent reported activity

0purchase rows on this page

24sale rows on this page

53matching filing rows

Purchases and sales count original non-derivative P and S rows. Awards, gifts, exercises, derivatives and amendments are shown separately and are not described as market purchases.

Transaction / filed	Reporting owner(s)	Code / security	Quantity	Price as filed	Ownership	Source
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F10, F3	S Sale (market/private)Common Stock · Non-derivative	2,435D	174.1378	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F9, F3	S Sale (market/private)Common Stock · Non-derivative	29,129D	173.2074	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F8, F3	S Sale (market/private)Common Stock · Non-derivative	91,746D	172.4579	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F7, F3	S Sale (market/private)Common Stock · Non-derivative	38,272D	171.3707	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F6, F3	S Sale (market/private)Common Stock · Non-derivative	53,787D	170.3498	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F5, F3	S Sale (market/private)Common Stock · Non-derivative	11,845D	169.3737	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F4, F3	S Sale (market/private)Common Stock · Non-derivative	27,061D	168.4776	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-30Filed 2026-11-03	BECHTOLSHEIM ANDREASTen-percent owner Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.88 to $167.87, 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 These shares are held by a family trust for which the reporting person is a trustee. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.89 to $168.885, 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 $168.89 to $169.875, 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 $169.89 to $170.8875, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.89 to $171.88, 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. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.89 to $172.885, 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. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.89 to $173.88, 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. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.90 to $174.395, 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. References: F1, F2, F3	S Sale (market/private)Common Stock · Non-derivative	13,617D	167.506	Indirectby Trust	Form 4 ↗0001596532-26-000256
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F1, F15	M Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative	17,333D	0	Direct	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F10, F7, F11	S Sale (market/private)Common Stock · Non-derivative	116D	182.7925	IndirectBy Foundation	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F10, F6, F11	S Sale (market/private)Common Stock · Non-derivative	3,446D	181.7814	IndirectBy Foundation	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F10, F5, F11	S Sale (market/private)Common Stock · Non-derivative	3,742D	180.9298	IndirectBy Foundation	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F10, F4, F11	S Sale (market/private)Common Stock · Non-derivative	2,041D	180.1198	IndirectBy Foundation	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F10, F3, F11	S Sale (market/private)Common Stock · Non-derivative	281D	179.0184	IndirectBy Foundation	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F10, F2, F11	S Sale (market/private)Common Stock · Non-derivative	374D	177.9108	IndirectBy Foundation	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F8, F7, F9	S Sale (market/private)Common Stock · Non-derivative	185D	182.7925	IndirectBy Childrens' Trust	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F8, F6, F9	S Sale (market/private)Common Stock · Non-derivative	5,514D	181.7814	IndirectBy Childrens' Trust	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F8, F5, F9	S Sale (market/private)Common Stock · Non-derivative	5,988D	180.9298	IndirectBy Childrens' Trust	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F8, F4, F9	S Sale (market/private)Common Stock · Non-derivative	3,265D	180.1198	IndirectBy Childrens' Trust	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F8, F3, F9	S Sale (market/private)Common Stock · Non-derivative	449D	179.0184	IndirectBy Childrens' Trust	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F8, F2, F9	S Sale (market/private)Common Stock · Non-derivative	599D	177.9108	IndirectBy Childrens' Trust	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F1, F7	S Sale (market/private)Common Stock · Non-derivative	200D	182.7925	Direct	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F1, F6	S Sale (market/private)Common Stock · Non-derivative	5,973D	181.7814	Direct	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F1, F5	S Sale (market/private)Common Stock · Non-derivative	6,487D	180.9298	Direct	Form 4 ↗0001596532-26-000248
2026-10-20Filed 2026-10-22	Duda KennethDirector · Officer · President and CTO Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.45 to $178.32, 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 $178.45 to $179.38, 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 $179.45 to $180.43, 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 $180.46 to $181.45, 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 $181.46 to $182.28, 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. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.70 to $183.11, 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. F8 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026. F9 These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares. F10 The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F11 These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F12 Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F13 Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F14 These shares are held by a family trust for which the reporting person is co-trustee. F15 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter. References: F1, F4	S Sale (market/private)Common Stock · Non-derivative	3,538D	180.1198	Direct	Form 4 ↗0001596532-26-000248

Imported instruments only. Joint owners do not multiply transactions. Amendments are separate filing rows, not additional trades. No aggregate trade totals are implied.