Five9 Investors

21 investors on Angel Roster list Five9 in their portfolio. Most are private equity firms and venture capital firms and the largest groups are based in the United States, Singapore and Canada.

Investors are matched on the company name in their portfolio, so companies that share the name Five9 can appear together.

Investors listed
21
With verified email
57%
Most common stage
Not specified
Top location
United States

Updated October 13, 2026 · How we compile this data

Top 21 Five9 investors

The most complete profiles first. Showing 21 of 21.

  • Ann WinbladVerified

    Venture Capital · United States

    AdvertisingHealth CareData IntegrationCybersecurity

    Portfolio: Influitive, Domo, Baynote, Voltage Security and 47 more

    Verified email available

  • Ben HartVerified

    Private Equity Firm · Singapore

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • Gary FencikVerified

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • Ingrid ChiavacciVerified

    Venture Capital · United States

    AdvertisingHealth CareData IntegrationCybersecurity

    Portfolio: Influitive, Domo, Baynote, Symbium and 42 more

    Verified email available

  • James KorczakVerified

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • Jeffrey AkersVerified

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • Jeffrey DiehlVerified

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • John HummerVerified

    Venture Capital · United States

    AdvertisingHealth CareData IntegrationCybersecurity

    Portfolio: Influitive, Domo, Baynote, Symbium and 42 more

    Verified email available

  • Sunil MishraVerified

    Private Equity Firm · Singapore

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • Troy BarnettVerified

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • YarVerified

    Private Equity Firm · Singapore

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Verified email available

  • Ron FarmerVerified

    Private Equity Firm · Canada

    EmailE-commerceCustomer ServiceMessaging

    Portfolio: Five9, Opencola, SoundBite Communications, Borderfree and 4 more

    Verified email available

  • Doris Guo

    Private Equity Firm · China

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Isamu Sai

    Private Equity Firm · Japan

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Jeffrey Burgis

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Kelly Meldrum

    Venture Capital, Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Michael Rosa

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Mitchell Kertzman

    Venture Capital · United States

    AdvertisingHealth CareData IntegrationCybersecurity

    Portfolio: Influitive, Domo, Baynote, Symbium and 42 more

    Contact details available

  • Quintin Kevin

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Thomas Bremner

    Private Equity Firm · United States

    Health CareData IntegrationCybersecurityWomen Founded

    Portfolio: Arctic Wolf, Lever, Snow Software, Partner Therapeutics and 61 more

    Contact details available

  • Vernon Lobo

    Private Equity Firm · Canada

    EmailE-commerceCustomer ServiceMessaging

    Portfolio: Five9, Opencola, SoundBite Communications, Borderfree and 4 more

    Contact details available

Frequently asked questions

How many Five9 investors are on Angel Roster?

Angel Roster lists 21 Five9 investors. 12 of them (57%) include a verified email address.

What types of investors are they?

The most common investor types are Private Equity Firms (17) and Venture Capital Firms (5). An investor can have more than one type, for example an angel who is also a venture partner.

Where are Five9 investors based?

Most are based in the United States (14), Singapore (3) and Canada (2).

Which companies have Five9 investors backed?

The most-backed portfolio companies among them are Borderfree (17), Bluprint (15), ThreatMetrix (15), GoCardless (15) and Epirium Bio (15).

How do I contact Five9 investors?

Create a free Angel Roster account to search and filter all 21, then unlock verified emails and LinkedIn profiles on a paid plan. Every plan starts with a 3-day free trial.