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The Reporting Person undertakes to provide Five9, Inc., any security holder of Five9, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":161671,"source":{"system":"sec-edgar","filing":"0001940974-26-000009","document":"wk-form4_1780954211.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097426000009/wk-form4_1780954211.xml","form_type":"4"}},{"id":855677,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2026-03-06T21:09:34.000Z","date":"2026-03-04","kind":"sale","planned":true,"acquired":false,"shares":7002,"price":17.98,"value":125895.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 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 $17.92 to $18.07, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":167540,"source":{"system":"sec-edgar","filing":"0001940974-26-000004","document":"wk-form4_1772831371.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097426000004/wk-form4_1772831371.xml","form_type":"4"}},{"id":855676,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2026-03-06T21:09:34.000Z","date":"2026-03-04","kind":"sale","planned":true,"acquired":false,"shares":3860,"price":17.78,"value":68630.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"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 $17.49 to $17.92, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":174542,"source":{"system":"sec-edgar","filing":"0001940974-26-000004","document":"wk-form4_1772831371.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097426000004/wk-form4_1772831371.xml","form_type":"4"}},{"id":879422,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2026-02-26T21:14:49.000Z","date":"2026-02-24","kind":"grant","planned":false,"acquired":true,"shares":83945,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":178402,"source":{"system":"sec-edgar","filing":"0001940974-26-000002","document":"wk-form4_1772140486.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097426000002/wk-form4_1772140486.xml","form_type":"4"}},{"id":978878,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-12-05T22:38:31.000Z","date":"2025-12-04","kind":"sale","planned":true,"acquired":false,"shares":5317,"price":20.57,"value":109370.69,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 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 $20.47 to $20.73, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":94457,"source":{"system":"sec-edgar","filing":"0001940974-25-000004","document":"wk-form4_1764974308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097425000004/wk-form4_1764974308.xml","form_type":"4"}},{"id":978877,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-12-05T22:38:31.000Z","date":"2025-12-04","kind":"sale","planned":true,"acquired":false,"shares":5541,"price":20.28,"value":112371.48,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"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 $20.13 to $20.47, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":99774,"source":{"system":"sec-edgar","filing":"0001940974-25-000004","document":"wk-form4_1764974308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097425000004/wk-form4_1764974308.xml","form_type":"4"}},{"id":1045745,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-09-08T22:25:24.000Z","date":"2025-09-04","kind":"sale","planned":true,"acquired":false,"shares":6433,"price":26.12,"value":168029.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2025."},{"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 $25.92 to $26.34 inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":105315,"source":{"system":"sec-edgar","filing":"0001940974-25-000003","document":"wk-form4_1757370322.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097425000003/wk-form4_1757370322.xml","form_type":"4"}},{"id":1045744,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-09-08T22:25:24.000Z","date":"2025-09-04","kind":"sale","planned":true,"acquired":false,"shares":4427,"price":25.5,"value":112888.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 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 $25.13 to $25.92, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":111748,"source":{"system":"sec-edgar","filing":"0001940974-25-000003","document":"wk-form4_1757370322.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000194097425000003/wk-form4_1757370322.xml","form_type":"4"}},{"id":1065193,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-08-15T21:09:41.000Z","date":"2025-08-13","kind":"sale","planned":true,"acquired":false,"shares":5143,"price":25.98,"value":133615.14,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2025."},{"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 $25.74 to $26.20, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":116175,"source":{"system":"sec-edgar","filing":"0001288847-25-000189","document":"wk-form4_1755292176.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884725000189/wk-form4_1755292176.xml","form_type":"4"}},{"id":1065192,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-08-15T21:09:41.000Z","date":"2025-08-13","kind":"sale","planned":true,"acquired":false,"shares":1900,"price":25.34,"value":48146.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 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 $24.74 to $25.73, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":121318,"source":{"system":"sec-edgar","filing":"0001288847-25-000189","document":"wk-form4_1755292176.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884725000189/wk-form4_1755292176.xml","form_type":"4"}},{"id":1119423,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-06-06T21:04:47.000Z","date":"2025-06-04","kind":"sale","planned":false,"acquired":false,"shares":3816,"price":28.28,"value":107916.48,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported on this form represents a Five9, Inc. mandated sale by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units, and it does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price applied to the transaction by the broker for sales to cover taxes upon vesting of restricted stock units for all employees of Five9, Inc., including the Reporting Person, on the date such sales occurred. The Reporting Person undertakes to provide Five9, Inc., any security holder of Five9, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 675 shares acquired under the Five9, Inc. Employee Stock Purchase Plan on May 15, 2025."}],"balance_after":123218,"source":{"system":"sec-edgar","filing":"0001288847-25-000159","document":"wk-form4_1749243875.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884725000159/wk-form4_1749243875.xml","form_type":"4"}},{"id":1227451,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-03-05T00:35:09.000Z","date":"2025-03-04","kind":"sale","planned":true,"acquired":false,"shares":4765,"price":33.67,"value":160437.55,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on Mach 13, 2024."},{"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 $33.30 to $34.10, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":126359,"source":{"system":"sec-edgar","filing":"0001288847-25-000037","document":"wk-form4_1741134901.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884725000037/wk-form4_1741134901.xml","form_type":"4"}},{"id":1227450,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-03-05T00:35:09.000Z","date":"2025-03-04","kind":"sale","planned":true,"acquired":false,"shares":2854,"price":32.94,"value":94010.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on Mach 13, 2024."},{"field":"shares","element":"transactionShares","label":"F2","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"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 $32.64 to $33.30, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":131124,"source":{"system":"sec-edgar","filing":"0001288847-25-000037","document":"wk-form4_1741134901.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884725000037/wk-form4_1741134901.xml","form_type":"4"}},{"id":1240446,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2025-02-27T21:51:41.000Z","date":"2025-02-25","kind":"grant","planned":false,"acquired":true,"shares":64969,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":133978,"source":{"system":"sec-edgar","filing":"0001288847-25-000035","document":"wk-form4_1740693094.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884725000035/wk-form4_1740693094.xml","form_type":"4"}},{"id":1340273,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-12-06T22:16:50.000Z","date":"2024-12-04","kind":"sale","planned":true,"acquired":false,"shares":3809,"price":42.52,"value":161958.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2024."},{"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 $42.22 to $42.81, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":69009,"source":{"system":"sec-edgar","filing":"0001288847-24-000165","document":"wk-form4_1733523404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000165/wk-form4_1733523404.xml","form_type":"4"}},{"id":1340272,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-12-06T22:16:50.000Z","date":"2024-12-04","kind":"sale","planned":true,"acquired":false,"shares":810,"price":42.16,"value":34149.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2024."},{"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 $42.11 to $42.22, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":72818,"source":{"system":"sec-edgar","filing":"0001288847-24-000165","document":"wk-form4_1733523404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000165/wk-form4_1733523404.xml","form_type":"4"}},{"id":1340271,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-12-06T22:16:50.000Z","date":"2024-12-04","kind":"sale","planned":true,"acquired":false,"shares":3000,"price":41.53,"value":124590.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2024."},{"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 $41.10 to $42.08, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":73628,"source":{"system":"sec-edgar","filing":"0001288847-24-000165","document":"wk-form4_1733523404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000165/wk-form4_1733523404.xml","form_type":"4"}},{"id":1412655,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-09-06T21:00:50.000Z","date":"2024-09-04","kind":"sale","planned":true,"acquired":false,"shares":3630,"price":30.15,"value":109444.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2024."},{"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 $30.18 to $30.66, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":76628,"source":{"system":"sec-edgar","filing":"0001288847-24-000134","document":"wk-form4_1725656443.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000134/wk-form4_1725656443.xml","form_type":"4"}},{"id":1412654,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-09-06T21:00:50.000Z","date":"2024-09-04","kind":"sale","planned":true,"acquired":false,"shares":3987,"price":29.91,"value":119251.17,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2024."},{"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 $29.66 to $30.18, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":80258,"source":{"system":"sec-edgar","filing":"0001288847-24-000134","document":"wk-form4_1725656443.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000134/wk-form4_1725656443.xml","form_type":"4"}},{"id":1478815,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-06-14T20:20:13.000Z","date":"2024-06-12","kind":"sale","planned":true,"acquired":false,"shares":6192,"price":45.04,"value":278887.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","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 $43.58 to $44.58, inclusive. 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The sales reported in this Form 4 were effected in accordance with Five9, Inc.s previously established sell to cover withholding policy, the Corporations Policy."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price applied to the transaction by the broker under the Corporations Policy for sales to cover taxes upon vesting of restricted stock units for all individuals, including the reporting person subject to the Corporations Policy on the date such sales occurred.  The reporting person undertakes to provide Five9, Inc., any security holder of Five9, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 344 shares acquired under the Five9, Inc. 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These shares were sold in multiple transactions at prices ranging from $59.00 to $59.22 inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":101026,"source":{"system":"sec-edgar","filing":"0001288847-24-000022","document":"wk-form4_1709762535.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000022/wk-form4_1709762535.xml","form_type":"4"}},{"id":1591271,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-03-06T22:02:31.000Z","date":"2024-03-05","kind":"sale","planned":true,"acquired":false,"shares":1427,"price":59.22,"value":84506.94,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"The reported sales were to cover taxes upon the vesting of performance-based RSUs."}],"balance_after":101897,"source":{"system":"sec-edgar","filing":"0001288847-24-000022","document":"wk-form4_1709762535.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000022/wk-form4_1709762535.xml","form_type":"4"}},{"id":1591270,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-03-06T22:02:31.000Z","date":"2024-03-04","kind":"grant","planned":true,"acquired":true,"shares":3699,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","text":"Settlement of non-derivative performance-based RSUs"}],"balance_after":103324,"source":{"system":"sec-edgar","filing":"0001288847-24-000022","document":"wk-form4_1709762535.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000022/wk-form4_1709762535.xml","form_type":"4"}},{"id":1591269,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-03-06T22:02:31.000Z","date":"2024-03-04","kind":"sale","planned":true,"acquired":false,"shares":5680,"price":58.45,"value":331996.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $60.40 to $61.11 inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":99625,"source":{"system":"sec-edgar","filing":"0001288847-24-000022","document":"wk-form4_1709762535.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000022/wk-form4_1709762535.xml","form_type":"4"}},{"id":1591268,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-03-06T22:02:31.000Z","date":"2024-03-04","kind":"sale","planned":true,"acquired":false,"shares":2014,"price":60.36,"value":121565.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $60.29 to $60.40, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":105305,"source":{"system":"sec-edgar","filing":"0001288847-24-000022","document":"wk-form4_1709762535.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000022/wk-form4_1709762535.xml","form_type":"4"}},{"id":1591267,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-03-06T22:02:31.000Z","date":"2024-03-04","kind":"sale","planned":true,"acquired":false,"shares":1300,"price":55.26,"value":71838.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $59.27 to $60.26, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":107319,"source":{"system":"sec-edgar","filing":"0001288847-24-000022","document":"wk-form4_1709762535.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000022/wk-form4_1709762535.xml","form_type":"4"}},{"id":1612022,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2024-02-28T21:32:41.000Z","date":"2024-02-26","kind":"grant","planned":false,"acquired":true,"shares":35684,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":108619,"source":{"system":"sec-edgar","filing":"0001288847-24-000016","document":"wk-form4_1709155945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884724000016/wk-form4_1709155945.xml","form_type":"4"}},{"id":1717691,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-08T21:45:08.000Z","date":"2023-12-06","kind":"tax_withholding","planned":false,"acquired":false,"shares":1116,"price":81.59,"value":91054.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Issuer to satisfy tax withholding obligation due to the vesting of Restricted Stock Units (\"RSUs\")."}],"balance_after":72935,"source":{"system":"sec-edgar","filing":"0001288847-23-000170","document":"wk-form4_1702071897.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000170/wk-form4_1702071897.xml","form_type":"4"}},{"id":1719971,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":100,"price":91.24,"value":9124.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."}],"balance_after":74051,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719970,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":163,"price":89.59,"value":14603.17,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.25 to $89.81 inclusive. 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The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":74314,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719968,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":300,"price":87.18,"value":26154.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.02 to $87.44 inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":74914,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719967,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":500,"price":86.54,"value":43270.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.98 to $86.97 inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":75214,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719966,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":1578,"price":85.37,"value":134713.86,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.82 to $85.82, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":75714,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719965,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":1847,"price":79.8,"value":147390.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $79.38 to $80.21, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":77292,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719964,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":952,"price":79.32,"value":75512.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $79.27 to $79.38, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":79139,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1719963,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-12-06T21:19:59.000Z","date":"2023-12-04","kind":"sale","planned":true,"acquired":false,"shares":3820,"price":78.77,"value":300901.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $78.26 to $79.25 inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":80091,"source":{"system":"sec-edgar","filing":"0001288847-23-000166","document":"wk-form4_1701897589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000166/wk-form4_1701897589.xml","form_type":"4"}},{"id":1785731,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-09-07T20:38:10.000Z","date":"2023-09-05","kind":"sale","planned":true,"acquired":false,"shares":4846,"price":71.18,"value":344938.28,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $70.88 to $71.57, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":83911,"source":{"system":"sec-edgar","filing":"0001288847-23-000138","document":"wk-form4_1694119075.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000138/wk-form4_1694119075.xml","form_type":"4"}},{"id":1785730,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-09-07T20:38:10.000Z","date":"2023-09-05","kind":"sale","planned":true,"acquired":false,"shares":1144,"price":70.91,"value":81121.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"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 $70.53 to $70.92, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":88757,"source":{"system":"sec-edgar","filing":"0001288847-23-000138","document":"wk-form4_1694119075.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000138/wk-form4_1694119075.xml","form_type":"4"}},{"id":1785729,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-09-07T20:38:10.000Z","date":"2023-09-05","kind":"sale","planned":true,"acquired":false,"shares":5012,"price":70.67,"value":354198.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $70.50 to $70.88, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":89901,"source":{"system":"sec-edgar","filing":"0001288847-23-000138","document":"wk-form4_1694119075.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000138/wk-form4_1694119075.xml","form_type":"4"}},{"id":1863695,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-06-07T21:09:43.000Z","date":"2023-06-05","kind":"sale","planned":true,"acquired":false,"shares":952,"price":68.96,"value":65649.92,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.96 to $69.11, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":94913,"source":{"system":"sec-edgar","filing":"0001288847-23-000104","document":"wk-form4_1686172176.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000104/wk-form4_1686172176.xml","form_type":"4"}},{"id":1863694,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-06-07T21:09:43.000Z","date":"2023-06-05","kind":"sale","planned":true,"acquired":false,"shares":9115,"price":69.98,"value":637867.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.74 to $70.37, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":95865,"source":{"system":"sec-edgar","filing":"0001288847-23-000104","document":"wk-form4_1686172176.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000104/wk-form4_1686172176.xml","form_type":"4"}},{"id":1863693,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-06-07T21:09:43.000Z","date":"2023-06-05","kind":"sale","planned":true,"acquired":false,"shares":3103,"price":69.39,"value":215317.17,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $69.01 to $69.74, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."}],"balance_after":104980,"source":{"system":"sec-edgar","filing":"0001288847-23-000104","document":"wk-form4_1686172176.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1288847/000128884723000104/wk-form4_1686172176.xml","form_type":"4"}},{"id":1863692,"issuer":{"id":4346,"kind":"organization","name":"Five9, Inc.","symbol":"FIVN"},"owners":[{"id":40440,"kind":"person","name":"Kozanian Panos","position":1,"cik":"0001940974","reported_name":"Kozanian Panos","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Product Engineering"}}],"security":"Common Stock","published_at":"2023-06-07T21:09:43.000Z","date":"2023-06-05","kind":"sale","planned":true,"acquired":false,"shares":3497,"price":68.43,"value":239299.71,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022."},{"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 $67.97 to $68.86, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, 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 ranges set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes 417 shares acquired under the Five9, Inc. 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These shares were sold in multiple transactions at prices ranging from $69.00 to $69.10, inclusive. 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