{"data":[{"accessionNo":"0002060757-26-000057","formType":"SCHEDULE 13G/A","amendmentNo":3,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":null,"reportingPerson":"Voss Capital, LP","reportingCik":null,"personType":"PN","sharesOwned":3482440,"percentOfClass":4.7,"filedAt":"2026-10-16","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000057","formType":"SCHEDULE 13G/A","amendmentNo":3,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":null,"reportingPerson":"Cocke Travis W.","reportingCik":null,"personType":"IN","sharesOwned":3482440,"percentOfClass":4.7,"filedAt":"2026-10-16","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000057","formType":"SCHEDULE 13G/A","amendmentNo":3,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":null,"reportingPerson":"Voss Advisors GP, LLC","reportingCik":null,"personType":"OO","sharesOwned":660000,"percentOfClass":0.9,"filedAt":"2026-10-16","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000057","formType":"SCHEDULE 13G/A","amendmentNo":3,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":null,"reportingPerson":"Voss Value Master Fund, LP","reportingCik":null,"personType":"PN","sharesOwned":575000,"percentOfClass":0.8,"filedAt":"2026-10-16","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000057","formType":"SCHEDULE 13G/A","amendmentNo":3,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":null,"reportingPerson":"Voss Value-Oriented Special Situations Fund, LP","reportingCik":null,"personType":"PN","sharesOwned":85000,"percentOfClass":0.1,"filedAt":"2026-10-16","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0001193125-26-351028","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"Ameriprise Financial, Inc.","reportingCik":null,"personType":"HC","sharesOwned":4140003,"percentOfClass":5.4,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0001193125-26-351028","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"Columbia Management Investment Advisers, LLC","reportingCik":null,"personType":"IA","sharesOwned":4035672,"percentOfClass":5.3,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002012383-26-003234","formType":"SCHEDULE 13G/A","amendmentNo":10,"issuerCik":"0001288847","issuerName":"FIVE9, INC","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-07-31","reportingPerson":"BlackRock, Inc.","reportingCik":null,"personType":"HC","sharesOwned":11877228,"percentOfClass":15.5,"filedAt":"2026-08-06","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002100121-26-001011","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001288847","issuerName":"Five9 Inc","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-07-31","reportingPerson":"Vanguard Portfolio Management","reportingCik":null,"personType":"IA","sharesOwned":7900169,"percentOfClass":10.31,"filedAt":"2026-08-06","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000041","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":"2026-06-30","reportingPerson":"Cocke Travis W.","reportingCik":null,"personType":"IN","sharesOwned":4885826,"percentOfClass":6.4,"filedAt":"2026-07-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000041","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":"2026-06-30","reportingPerson":"Voss Capital, LP","reportingCik":null,"personType":"PN","sharesOwned":4885826,"percentOfClass":6.4,"filedAt":"2026-07-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000041","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":"2026-06-30","reportingPerson":"Voss Advisors GP, LLC","reportingCik":null,"personType":"OO","sharesOwned":810826,"percentOfClass":1.1,"filedAt":"2026-07-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000041","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":"2026-06-30","reportingPerson":"Voss Value Master Fund, LP","reportingCik":null,"personType":"PN","sharesOwned":700000,"percentOfClass":0.9,"filedAt":"2026-07-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002060757-26-000041","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":"338307101","securityClass":"Common stock, par value $0.001 per share","eventDate":"2026-06-30","reportingPerson":"Voss Value-Oriented Special Situations Fund, LP","reportingCik":null,"personType":"PN","sharesOwned":110826,"percentOfClass":0.1,"filedAt":"2026-07-14","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002100121-26-000418","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001288847","issuerName":"Five9 Inc","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-03-31","reportingPerson":"Vanguard Portfolio Management","reportingCik":null,"personType":"IA","sharesOwned":6874027,"percentOfClass":8.97,"filedAt":"2026-04-29","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0002100119-26-000543","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001288847","issuerName":"Five9 Inc","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-03-31","reportingPerson":"Vanguard Capital Management","reportingCik":null,"personType":"IA","sharesOwned":3915873,"percentOfClass":5.11,"filedAt":"2026-04-29","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000102909-26-001347","formType":"SCHEDULE 13G/A","amendmentNo":11,"issuerCik":"0001288847","issuerName":"Five9 Inc","ticker":"FIVN","cusip":"338307101","securityClass":"Common Stock","eventDate":"2026-03-13","reportingPerson":"The Vanguard Group","reportingCik":null,"personType":"IA","sharesOwned":0,"percentOfClass":0,"filedAt":"2026-03-26","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0001361570-26-000007","formType":"SCHEDULE 13D/A","amendmentNo":6,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2026-02-26","reportingPerson":"PICTET ASSET MANAGEMENT SA","reportingCik":"0001361570","personType":"IA","sharesOwned":2872185,"percentOfClass":3.8,"filedAt":"2026-02-27","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0001361570-26-000005","formType":"SCHEDULE 13D/A","amendmentNo":4,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2025-04-15","reportingPerson":"PICTET ASSET MANAGEMENT SA","reportingCik":"0001361570","personType":"IA","sharesOwned":5775895,"percentOfClass":7.4,"filedAt":"2026-02-17","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0001361570-26-000006","formType":"SCHEDULE 13D/A","amendmentNo":5,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2026-02-13","reportingPerson":"PICTET ASSET MANAGEMENT SA","reportingCik":"0001361570","personType":"IA","sharesOwned":null,"percentOfClass":7.4,"filedAt":"2026-02-17","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000921895-26-000364","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"Common stock, par value $0.001 per share","eventDate":"2025-12-31","reportingPerson":"Cocke Travis W.","reportingCik":null,"personType":"IN","sharesOwned":6287790,"percentOfClass":8,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000921895-26-000364","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"Common stock, par value $0.001 per share","eventDate":"2025-12-31","reportingPerson":"Voss Capital, LP","reportingCik":null,"personType":"PN","sharesOwned":6287790,"percentOfClass":8,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000921895-26-000364","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"Common stock, par value $0.001 per share","eventDate":"2025-12-31","reportingPerson":"Voss Advisors GP, LLC","reportingCik":null,"personType":"OO","sharesOwned":1225000,"percentOfClass":1.6,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000921895-26-000364","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"Common stock, par value $0.001 per share","eventDate":"2025-12-31","reportingPerson":"Voss Value Master Fund, LP","reportingCik":null,"personType":"PN","sharesOwned":1050000,"percentOfClass":1.3,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000921895-26-000364","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001288847","issuerName":"Five9, Inc.","ticker":"FIVN","cusip":null,"securityClass":"Common stock, par value $0.001 per share","eventDate":"2025-12-31","reportingPerson":"Voss Value-Oriented Special Situations Fund, LP","reportingCik":null,"personType":"PN","sharesOwned":175000,"percentOfClass":0.2,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000315066-26-000429","formType":"SCHEDULE 13G/A","amendmentNo":7,"issuerCik":"0001288847","issuerName":"FIVE9 INC","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2025-12-31","reportingPerson":"FMR LLC","reportingCik":null,"personType":"HC","sharesOwned":692076.41,"percentOfClass":0.9,"filedAt":"2026-02-05","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000315066-26-000429","formType":"SCHEDULE 13G/A","amendmentNo":7,"issuerCik":"0001288847","issuerName":"FIVE9 INC","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2025-12-31","reportingPerson":"Abigail P. Johnson","reportingCik":null,"personType":"IN","sharesOwned":692076.41,"percentOfClass":0.9,"filedAt":"2026-02-05","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000315066-25-002743","formType":"SCHEDULE 13G/A","amendmentNo":6,"issuerCik":"0001288847","issuerName":"FIVE9 INC","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2025-09-30","reportingPerson":"FMR LLC","reportingCik":null,"personType":"HC","sharesOwned":3941319.66,"percentOfClass":5.1,"filedAt":"2025-11-05","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"},{"accessionNo":"0000315066-25-002743","formType":"SCHEDULE 13G/A","amendmentNo":6,"issuerCik":"0001288847","issuerName":"FIVE9 INC","ticker":"FIVN","cusip":null,"securityClass":"COMMON STOCK","eventDate":"2025-09-30","reportingPerson":"Abigail P. Johnson","reportingCik":null,"personType":"IN","sharesOwned":3941319.66,"percentOfClass":5.1,"filedAt":"2025-11-05","canonicalUrl":"https://xoomar.com/markets/stocks/fivn"}],"updatedAt":"2026-10-29T10:12:22.126Z","source":"xoomar.com","docs":"https://xoomar.com/markets/api","license":"https://xoomar.com/terms","attribution":"Credit XOOMAR with a link to the dataset page on xoomar.com when you republish this data","canonicalUrl":"https://xoomar.com/markets/stocks/fivn","meta":{"source":"SEC","sourceAttribution":"Schedule 13D and 13G data: SEC.","notice":"10 requests a minute without a key, 30 with a free key. Get a free key at https://xoomar.com/signup?utm_source=api, register your app at https://xoomar.com/developers/register?utm_source=api, and credit the data as \"Data: XOOMAR\" together with the sourceAttribution line."}}