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These shares were sold in multiple transactions at prices ranging from $217.00 to $217.35, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"These shares are held by a family trust for which the reporting person is co-trustee."}],"balance_after":15432507,"source":{"system":"sec-edgar","filing":"0001596532-26-000244","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000244/edgardoc.xml","form_type":"4"}},{"id":4639841,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-13T23:09:50.000Z","date":"2026-10-08","kind":"sale","planned":true,"acquired":false,"shares":19990,"price":217.0483,"value":4338795.517,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.215, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"These shares are held by a family trust for which the reporting person is co-trustee."}],"balance_after":15525748,"source":{"system":"sec-edgar","filing":"0001596532-26-000244","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000244/edgardoc.xml","form_type":"4"}},{"id":4639840,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-13T23:09:50.000Z","date":"2026-10-09","kind":"sale","planned":true,"acquired":false,"shares":18656,"price":217.0958,"value":4050139.2448,"ownership":{"direct":false,"nature":"By Trust for Child 2"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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 relatives on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.35, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. 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These shares were sold in multiple transactions at prices ranging from $217.00 to $217.215, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares."}],"balance_after":4793347,"source":{"system":"sec-edgar","filing":"0001596532-26-000244","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000244/edgardoc.xml","form_type":"4"}},{"id":4639838,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-13T23:09:50.000Z","date":"2026-10-09","kind":"sale","planned":true,"acquired":false,"shares":18656,"price":217.0958,"value":4050139.2448,"ownership":{"direct":false,"nature":"By Trust for Child 1"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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 relatives on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.35, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares."}],"balance_after":4774691,"source":{"system":"sec-edgar","filing":"0001596532-26-000244","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000244/edgardoc.xml","form_type":"4"}},{"id":4639837,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-13T23:09:50.000Z","date":"2026-10-08","kind":"sale","planned":true,"acquired":false,"shares":4000,"price":217.0483,"value":868193.2,"ownership":{"direct":false,"nature":"By Trust for Child 1"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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 relatives on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.215, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares."}],"balance_after":4793347,"source":{"system":"sec-edgar","filing":"0001596532-26-000244","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000244/edgardoc.xml","form_type":"4"}},{"id":4638888,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-09T23:13:37.000Z","date":"2026-10-07","kind":"sale","planned":true,"acquired":false,"shares":69272,"price":217.1408,"value":15041777.4976,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.18, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"These shares are held by a family trust for which the reporting person is co-trustee."}],"balance_after":15545738,"source":{"system":"sec-edgar","filing":"0001596532-26-000242","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000242/edgardoc.xml","form_type":"4"}},{"id":4638887,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-09T23:13:37.000Z","date":"2026-10-07","kind":"sale","planned":true,"acquired":false,"shares":13860,"price":217.1408,"value":3009571.488,"ownership":{"direct":false,"nature":"By Trust for Child 2"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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 relatives on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $213.03 to $213.22, inclusive. 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These shares were sold in multiple transactions at prices ranging from $212.03 to $213.025, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"These shares are held by a family trust for which the reporting person is co-trustee."}],"balance_after":15618912,"source":{"system":"sec-edgar","filing":"0001596532-26-000240","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000240/edgardoc.xml","form_type":"4"}},{"id":4638249,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-08T23:18:31.000Z","date":"2026-10-06","kind":"sale","planned":true,"acquired":false,"shares":65897,"price":211.3602,"value":13928003.0994,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $211.00 to $211.99, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"These shares are held by a family trust for which the reporting person is co-trustee."}],"balance_after":15877957,"source":{"system":"sec-edgar","filing":"0001596532-26-000240","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1605809/000159653226000240/edgardoc.xml","form_type":"4"}},{"id":4638248,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10359,"kind":"person","name":"Ullal Jayshree","position":1,"cik":"0001605809","reported_name":"Ullal Jayshree","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and Chairperson"}}],"security":"Common Stock","published_at":"2026-10-08T23:18:31.000Z","date":"2026-10-06","kind":"sale","planned":true,"acquired":false,"shares":781,"price":213.0637,"value":166402.7497,"ownership":{"direct":false,"nature":"By Trust for Child 2"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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 relatives on November 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $213.03 to $213.22, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. 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These shares were sold in multiple transactions at prices ranging from $212.03 to $213.025, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. 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These shares were sold in multiple transactions at prices ranging from $206.02 to $206.04, 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."}],"balance_after":48410,"source":{"system":"sec-edgar","filing":"0001596532-26-000236","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000236/edgardoc.xml","form_type":"4"}},{"id":4631341,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10387,"kind":"person","name":"TEMPLETON MARK B","position":1,"cik":"0001201938","reported_name":"TEMPLETON MARK B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-05T23:35:20.000Z","date":"2026-10-01","kind":"sale","planned":true,"acquired":false,"shares":1800,"price":205.5758,"value":370036.44,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.00 to $205.97, 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."}],"balance_after":48610,"source":{"system":"sec-edgar","filing":"0001596532-26-000236","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000236/edgardoc.xml","form_type":"4"}},{"id":4631340,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10387,"kind":"person","name":"TEMPLETON MARK B","position":1,"cik":"0001201938","reported_name":"TEMPLETON MARK B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-05T23:35:20.000Z","date":"2026-10-01","kind":"sale","planned":true,"acquired":false,"shares":1800,"price":204.445,"value":368001.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.99 to $204.97, 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."}],"balance_after":50410,"source":{"system":"sec-edgar","filing":"0001596532-26-000236","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000236/edgardoc.xml","form_type":"4"}},{"id":4631339,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10387,"kind":"person","name":"TEMPLETON MARK B","position":1,"cik":"0001201938","reported_name":"TEMPLETON MARK B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-05T23:35:20.000Z","date":"2026-10-01","kind":"sale","planned":true,"acquired":false,"shares":500,"price":202.898,"value":101449.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.64 to $203.09, 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."}],"balance_after":52210,"source":{"system":"sec-edgar","filing":"0001596532-26-000236","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000236/edgardoc.xml","form_type":"4"}},{"id":4631338,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10387,"kind":"person","name":"TEMPLETON MARK B","position":1,"cik":"0001201938","reported_name":"TEMPLETON MARK B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-05T23:35:20.000Z","date":"2026-10-01","kind":"sale","planned":true,"acquired":false,"shares":700,"price":201.6243,"value":141137.01,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.18 to $202.10, 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."}],"balance_after":52710,"source":{"system":"sec-edgar","filing":"0001596532-26-000236","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000236/edgardoc.xml","form_type":"4"}},{"id":4625772,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10329,"kind":"person","name":"Duda Kenneth","position":1,"cik":"0001605808","reported_name":"Duda Kenneth","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CTO"}}],"security":"Non-Qualified Stock Option (right to buy)","published_at":"2026-09-23T23:05:10.000Z","date":"2026-09-21","kind":"exercise","planned":true,"acquired":false,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F14","text":"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."}],"balance_after":138668,"derivative":{"exercise_price":14.1463,"expiration_date":"2029-02-07","underlying":"Common Stock","underlying_shares":17333},"source":{"system":"sec-edgar","filing":"0001596532-26-000232","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":20,"url":"https://www.sec.gov/Archives/edgar/data/1605808/000159653226000232/edgardoc.xml","form_type":"4"}},{"id":4625771,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10329,"kind":"person","name":"Duda Kenneth","position":1,"cik":"0001605808","reported_name":"Duda Kenneth","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CTO"}}],"security":"Common Stock","published_at":"2026-09-23T23:05:10.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":1269,"price":205.495,"value":260773.155,"ownership":{"direct":false,"nature":"By Foundation"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F9","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. 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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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee."}],"balance_after":442400,"source":{"system":"sec-edgar","filing":"0001596532-26-000232","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1605808/000159653226000232/edgardoc.xml","form_type":"4"}},{"id":4625770,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10329,"kind":"person","name":"Duda Kenneth","position":1,"cik":"0001605808","reported_name":"Duda Kenneth","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CTO"}}],"security":"Common Stock","published_at":"2026-09-23T23:05:10.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":2038,"price":204.7833,"value":417348.3654,"ownership":{"direct":false,"nature":"By Foundation"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F9","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $204.20 to $205.18, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee."}],"balance_after":443669,"source":{"system":"sec-edgar","filing":"0001596532-26-000232","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1605808/000159653226000232/edgardoc.xml","form_type":"4"}},{"id":4625769,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10329,"kind":"person","name":"Duda Kenneth","position":1,"cik":"0001605808","reported_name":"Duda Kenneth","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CTO"}}],"security":"Common Stock","published_at":"2026-09-23T23:05:10.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":1558,"price":203.4866,"value":317032.1228,"ownership":{"direct":false,"nature":"By Foundation"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F9","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $202.10 to $203.08, inclusive. 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These shares were sold in multiple transactions at prices ranging from $197.00 to $197.9975, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by a family trust for which the reporting person is a trustee."}],"balance_after":180735408,"source":{"system":"sec-edgar","filing":"0001596532-26-000230","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000230/edgardoc.xml","form_type":"4"}},{"id":4623814,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10347,"kind":"person","name":"BECHTOLSHEIM ANDREAS","position":1,"cik":"0001133206","reported_name":"BECHTOLSHEIM ANDREAS","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-21T23:06:01.000Z","date":"2026-09-17","kind":"sale","planned":true,"acquired":false,"shares":20418,"price":196.2902,"value":4007853.3036,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. 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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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by a family trust for which the reporting person is a trustee."}],"balance_after":180806609,"source":{"system":"sec-edgar","filing":"0001596532-26-000230","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000230/edgardoc.xml","form_type":"4"}},{"id":4623811,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10347,"kind":"person","name":"BECHTOLSHEIM ANDREAS","position":1,"cik":"0001133206","reported_name":"BECHTOLSHEIM ANDREAS","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-21T23:06:01.000Z","date":"2026-09-17","kind":"sale","planned":true,"acquired":false,"shares":7168,"price":193.6132,"value":1387819.4176,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $192.98 to $193.96, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by a family trust for which the reporting person is a trustee."}],"balance_after":180835880,"source":{"system":"sec-edgar","filing":"0001596532-26-000230","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000230/edgardoc.xml","form_type":"4"}},{"id":4617499,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10329,"kind":"person","name":"Duda Kenneth","position":1,"cik":"0001605808","reported_name":"Duda 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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."}],"balance_after":53410,"source":{"system":"sec-edgar","filing":"0001596532-26-000226","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1596532/000159653226000226/edgardoc.xml","form_type":"4"}},{"id":4615408,"issuer":{"id":2421,"kind":"organization","name":"Arista Networks, Inc.","symbol":"ANET"},"owners":[{"id":10387,"kind":"person","name":"TEMPLETON MARK B","position":1,"cik":"0001201938","reported_name":"TEMPLETON MARK B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-09-10T23:47:09.000Z","date":"2026-09-08","kind":"sale","planned":true,"acquired":false,"shares":1700,"price":198.4376,"value":337343.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $195.81 to $196.70, inclusive. 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