TeleSign Investors

49 investors on Angel Roster list TeleSign in their portfolio. Most are private equity firms and venture capital firms, the most common stage is Series B and the largest groups are based in the United States, the United Kingdom and Australia.

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

Investors listed
49
With verified email
45%
Most common stage
Series B
Top location
United States

Updated October 13, 2026 · How we compile this data

Top 40 TeleSign investors

The most complete profiles first. Showing 40 of 49.

  • Greg GoldfarbVerified

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 84 more

    Verified email available

  • John CarrollVerified

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Verified email available

  • Scott CollinsVerified

    Venture Capital, Private Equity Firm, Investor · United Kingdom

    Series BAdvertisingData IntegrationE-commerceAccounting

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 82 more

    Verified email available

  • Scott FergusonVerified

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingData IntegrationE-commerceAccounting

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Verified email available

  • Tom JenningsVerified

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 82 more

    Verified email available

  • Albert BielinkoVerified

    Venture Capital · Australia

    E-commerceCustomer ServiceCybersecuritySports

    Portfolio: Nexmo, FitOn, Incorta, Gago and 66 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

  • Colin MisteleVerified

    Private Equity Firm · United States

    AdvertisingData IntegrationE-commerceAccounting

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Verified email available

  • Darren BlackVerified

    Private Equity Firm · United States

    AdvertisingData IntegrationE-commerceAccounting

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 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

  • 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

  • Jim ArmstrongVerified

    Venture Capital · United States

    EmailE-commerceCustomer ServiceCybersecurity

    Portfolio: Sensible Object, Nifty Games, Uniphore, Perspica and 44 more

    Verified email available

  • Marcus BartramVerified

    Venture Capital · Australia

    E-commerceCustomer ServiceCybersecuritySports

    Portfolio: Nexmo, FitOn, Incorta, Gago and 66 more

    Verified email available

  • Matthew KoertgeVerified

    Venture Capital · Australia

    TelecommunicationsE-commerceCustomer ServiceCybersecurity

    Portfolio: Nexmo, FitOn, Incorta, Gago and 67 more

    Verified email available

  • Robin DevereuxVerified

    Venture Capital, Private Equity Firm · United States

    AdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Verified email available

  • Steve SchmidtVerified

    Venture Capital · Australia

    E-commerceCustomer ServiceCybersecuritySports

    Portfolio: Nexmo, FitOn, Incorta, Gago and 66 more

    Contact details 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

  • Thomas TarnowskiVerified

    Venture Capital, Private Equity Firm · United Kingdom

    AdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 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

  • Yash PatelVerified

    Venture Capital · United States

    E-commerceCustomer ServiceCybersecuritySports

    Portfolio: Nexmo, FitOn, Incorta, Gago and 66 more

    Verified email available

  • Andrew Collins

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Antony Clavel

    Venture Capital, Private Equity Firm, Investor · United Kingdom

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Christian Strain

    Venture Capital, Private Equity Firm, Investor · France

    Series BAdvertisingData IntegrationE-commerceAccounting

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Dave Averett

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Han Sikkens

    Venture Capital, Private Equity Firm, Investor · United Kingdom

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 82 more

    Contact details available

  • Johannes Grefe

    Venture Capital, Private Equity Firm, Investor · United Kingdom

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Louis W. Gresham

    Venture Capital, Investor · United States

    Series BSeries AEmailE-commerceCustomer ServiceCybersecurity

    Portfolio: Sensible Object, Nifty Games, Uniphore, Perspica and 45 more

    Contact details available

  • Mark deLaar

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingData IntegrationE-commerceAccounting

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Michael Medici

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 84 more

    Contact details available

  • Peter Rottier

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Ross D. Stern

    Venture Capital, Private Equity Firm, Investor · United States

    Series BAdvertisingHealth CareData IntegrationHospitals

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Alexander Whittemore

    Venture Capital, Private Equity Firm · United States

    AdvertisingHealth CareData IntegrationE-commerce

    Portfolio: Advance Health, Striim, DuPage Medical Group, On Robot and 80 more

    Contact details available

  • Dana Moraly

    Venture Capital · United States

    EmailE-commerceCustomer ServiceCybersecurity

    Portfolio: Sensible Object, Nifty Games, Uniphore, Perspica and 44 more

    Contact details 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

  • Jed Leidheiser

    Venture Capital · United States

    EmailE-commerceCustomer ServiceCybersecurity

    Portfolio: Sensible Object, Nifty Games, Uniphore, Perspica and 44 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

See all 49 TeleSign investors

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Frequently asked questions

How many TeleSign investors are on Angel Roster?

Angel Roster lists 49 TeleSign investors. 22 of them (45%) include a verified email address.

What types of investors are they?

The most common investor types are Private Equity Firms (37) and Venture Capital Firms (33). An investor can have more than one type, for example an angel who is also a venture partner.

Which stages do TeleSign investors invest in?

Among those that list a stage, the most common are Series B (16) and Series A (1).

Where are TeleSign investors based?

Most are based in the United States (34), the United Kingdom (5) and Australia (4).

Which companies have TeleSign investors backed?

The most-backed portfolio companies among them are Visier (37), HealthSun Health Plans (22), Quay Australia (22), Darktrace (22) and RELEX Solutions (22).

How do I contact TeleSign investors?

Create a free Angel Roster account to search and filter all 49, then unlock verified emails and LinkedIn profiles on a paid plan. Every plan starts with a 3-day free trial.