Five9, Inc.
One of the world's larger cloud contact-center platforms, Five9 turns customer service into software, letting businesses handle calls, chat, and email over the internet instead of on bulky on-premises phone systems. Its embedded Genius AI suite assists those interactions for thousands of organizations of every size. Founded in 2001 in the San Francisco Bay Area by a team of VoIP engineers, the company helped pioneer moving call centers to the cloud. Its name nods to the telecom reliability gold standard of "five nines" uptime, not the nine-to-five workday.
Granted 67.2K · Sold 2.80M
Sold 3.1K
Sold 3.1K
Granted 67.2K · Sold 1.42M
Granted 716.7K
Granted 3.08M · Sold 3.06M
Granted 908.4K · Bought 25.0K · Sold 865.9K
Granted 666.1K · Sold 506.1K
Granted 301.9K · Sold 46.6K
Granted 230.7K · Sold 21.1K
Granted 271.7K · Sold 79.3K
Granted 170.1K · Sold 60.0K
Granted 39.9K
Granted 357.3K · Sold 152.0K
Granted 35.0K · Sold 1.8K
Granted 281.4K · Sold 148.7K
Granted 1.09M · Sold 1.12M
Granted 305.8K · Sold 272.1K
Granted 60.0K · Sold 7.1K
Granted 191.0K · Bought 10.0K · Sold 122.8K
Granted 151.6K · Sold 83.3K
Granted 88.0K · Sold 46.0K
Granted 52.2K
Granted 52.2K
Granted 87.1K · Bought 1.0K · Sold 47.3K
Granted 653.6K · Sold 640.5K
Granted 208.2K · Bought 200.0K · Sold 370.0K
Granted 45.8K · Sold 8.8K
Granted 103.5K · Sold 2.83M
Granted 29.0K
Granted 28.9K
Granted 27.1K
Granted 26.1K
Granted 32.2K · Sold 8.5K
Granted 48.5K · Sold 25.9K
Granted 21.2K · Bought 106
Granted 20.4K
Granted 20.3K
Granted 21.6K · Sold 5.4K
Granted 170.7K · Bought 10.0K · Sold 169.6K
Granted 5.6K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Adams Street Partners LLC10% owner · 13 transactions | — | 9.52Mas of Aug 2016 | 67.2K | — | 2.80M |
| 45th Parallel LLC +9 co-filers10% owner · 18 transactions | — | 3.56Mas of Dec 2015 | — | — | 3.1K |
| Worms Vincent +1 co-filer10% owner · 18 transactions | — | 3.56Mas of Dec 2015 | — | — | 3.1K |
| Das JayendraDirector · 6 transactions | — | 3.51Mas of Nov 2016 | 67.2K | — | 1.42M |
| Mathradas AmitChief Executive Officer · 1 transaction | — | 716.7K | 716.7K | — | — |
| Burkland MichaelDirector · 178 transactions | — | 537.0K | 3.08M | — | 3.06M |
| Zwarenstein BarryChief Financial Officer · 344 transactions | — | 378.5Kas of Mar 2025 | 908.4K | 25.0K | 865.9K |
| Trollope Rowan MChief Executive Officer, Director · 176 transactions | — | 329.7Kas of Sep 2022 | 666.1K | — | 506.1K |
| Lee Bryan MChief Financial Officer · 13 transactions | — | 310.0K | 301.9K | — | 46.6K |
| Tuckness Matthew E.Chief Revenue Officer · 6 transactions | — | 281.5K | 230.7K | — | 21.1K |
| Dignan AndyPresident · 39 transactions | — | 275.7K | 271.7K | — | 79.3K |
| Meriweather Tiffany N.Chief Admin. & Legal Officer · 8 transactions | — | 271.8K | 170.1K | — | 60.0K |
| Five9, Inc.President · 1 transaction | — | 233.4Kas of Mar 2025 | 39.9K | — | — |
| Dewalt David GDirector · 20 transactions | — | 205.3Kas of May 2023 | 357.3K | — | 152.0K |
| Milam David BChief Marketing Officer · 3 transactions | — | 168.9Kas of Jun 2015 | 35.0K | — | 1.8K |
| Kozanian PanosEVP, Product Engineering · 59 transactions | — | 161.7K | 281.4K | — | 148.7K |
| Burkland Daniel P.Pres. & Chief Revenue Officer · 273 transactions | — | 128.9Kas of Sep 2024 | 1.09M | — | 1.12M |
| Hummer Winblad Venture Partners V A LP +4 co-filersFormer 10% Owner · 6 transactions | — | 108.5Kas of Jun 2016 | — | — | — |
| Passi GauravEVP, Product Management · 79 transactions | — | 83.6Kas of Aug 2018 | 305.8K | — | 272.1K |
| Manor MoniEVP, Products · 7 transactions | — | 81.5Kas of Jun 2015 | 60.0K | — | 7.1K |
| Zollars RobertDirector · 29 transactions | — | 78.2Kas of May 2025 | 191.0K | 10.0K | 122.8K |
| Crane Michael J.EVP, Services · 16 transactions | — | 73.6Kas of Sep 2016 | 151.6K | — | 83.3K |
| Mansharamani LeenaSVP, Chief Accounting Officer · 83 transactions | — | 57.7K | 88.0K | — | 46.0K |
| Kertzman MitchellFormer Director & 10% Owner · 6 transactions | — | 56.4Kas of Jun 2016 | 52.2K | — | — |
| Wilson Timothy MDirector · 2 transactions | — | 52.2Kas of May 2015 | 52.2K | — | — |
| Burdiek Michael JDirector · 25 transactions | — | 40.8K | 87.1K | 1.0K | 47.3K |
| Welch ScottEVP, Telco Services & GM EMEA · 268 transactions | — | 38.2Kas of Jun 2022 | 653.6K | — | 640.5K |
| Acosta Jack LDirector · 37 transactions | — | 38.2Kas of May 2024 | 208.2K | 200.0K | 370.0K |
| Gavin KevinChief Marketing Officer · 4 transactions | — | 37.0Kas of Mar 2017 | 45.8K | — | 8.8K |
| Welsh David S.Director · 32 transactions | — | 29.8Kas of May 2025 | 103.5K | — | 2.83M |
| Rosenberg Jonathan D.Chief Technology Officer · 1 transaction | — | 29.0Kas of Jan 2019 | 29.0K | — | — |
| Barsamian SueDirector · 7 transactions | — | 28.9K | 28.9K | — | — |
| Mariner Jonathan DDirector · 4 transactions | — | 27.1K | 27.1K | — | — |
| Iskow JulieDirector · 5 transactions | — | 26.1K | 26.1K | — | — |
| Doran James BEVP Strategy · 4 transactions | — | 24.6Kas of Dec 2019 | 32.2K | — | 8.5K |
| Kam RyanChief Marketing Officer · 5 transactions | — | 23.9Kas of Dec 2019 | 48.5K | — | 25.9K |
| Ramakrishna SudhakarDirector · 3 transactions | — | 21.3K | 21.2K | 106 | — |
| Walker Maria CDirector · 3 transactions | — | 20.4K | 20.4K | — | — |
| Gupta SagarDirector · 3 transactions | — | 20.3K | 20.3K | — | — |
| Pickering David A.EVP, Engineering · 3 transactions | — | 16.7Kas of Dec 2019 | 21.6K | — | 5.4K |
| Alexy KimberlyDirector · 59 transactions | — | 11.1Kas of Feb 2023 | 170.7K | 10.0K | 169.6K |
| Pinczuk Ana G.Director · 3 transactions | — | 5.6Kas of May 2022 | 5.6K | — | — |
| Lobo Vernon F +3 co-filers10% owner · 1 transaction | — | 0as of Oct 2014 | — | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -14.68M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.