Fundraising Fox
/People
Sign in

Alex Doll

Investor

Founder & Managing Partner at Ten Eleven · Board director at Harmonic Security · Board director at Ripsim · Board director at Eclypsium

San Mateo, California

Writes $3M – $15M checks · typically $9M

Find your path to Alex

279 people in our graph can introduce you to Alex.

Each arrow is one introduction. Sign up to fill in the first one.

Ask Dave Mueller to introduce you to Alex

You →Dave · together at Harmonic Security (2026) →Alex

Ask Jamie Chen to introduce you to Alex

You →Jamie · 2 people · together at Variance →Alex

Ask Sam Okafor to introduce you to Alex

You →Sam · 2 people · together at Kasada →Alex

Sign up to find every way you can get introduced to Alex

  • Your email: the people you already email who know Alex
  • 2nd- and 3rd-degree connections: people you know who worked, studied or invested with Alex
  • Your LinkedIn: the connections who can make the intro for you

We rank every route by how warm it is, so you raise on warm intros instead of cold emails.

Sign up with GoogleAlready have an account? Log in

About

Alex Doll, co-founder of PGP Corporation (acquired by Symantec), is a career security operator and investor whose founder experience gives him empathy and strong credibility with cybersecurity entrepreneurs.

Contact· self-published, not guessed

Invests in

AI & Machine LearningCrypto & Web3CybersecurityData & InfrastructureFintech

Board director at Harmonic Security

Intro paths

→

In turn, Alex can intro founders to Harmonic Security's investors below.

Harmonic Security's investors · 5

Lockstep Angel InvestmentsPalo AltoNext47Palo Alto · since 2024Storm VenturesPalo Alto · since 2024Ten ElevenBurlingame · $3M – $15M checks · since 2024Ventures TogetherLondon · $50K – $250K checks · since 2024

Co-founders at Harmonic Security

BWBryan Woolgar-O'Neil
Bryan Woolgar-O'NeilExecutive Officer, Director
AEAlastair Ewan Paterson
Alastair Ewan PatersonExecutive Officer, Director

Board director at Ripsim

Intro paths

→

In turn, Alex can intro founders to Ripsim's investors below.

Ripsim's investors · 2

Swisscom VenturesZurich · $2M – $10M checksTen ElevenBurlingame · $3M – $15M checks · since 2024

Board director at Eclypsium

Intro paths

→

In turn, Alex can intro founders to Eclypsium's investors below.

Eclypsium's investors · 21

Alumni VenturesManchester · $100K – $10M checksAndreessen HorowitzMenlo Park · $500K – $50M checks · since 2025AV8 VenturesPalo Alto · $500K – $10M checksaVentureSan FranciscoBasecamp FundManchester · $100K – $10M checksDniproPalo AltoGlobal BrainTokyo · $100K checksIntel CapitalSanta Clara · $1M – $20M checks · since 2025J-VenturesSilicon Valley · $250K – $1M checksKDDI Open Innovation FundMadrona Venture GroupSeattle · $2M – $10M checks · since 2018Mango CapitalLos Altos · $1M – $1.5M checksMindset VentureSan Francisco · $500K – $3M checksOregon Venture FundPortland · $500K – $5M checksQualcomm VenturesSan Diego · $5M checks · since 2025SingTel Innov8 Pte Ltd.Singapore · $80K – $25M checks · since 2025Sixty Degree CapitalNorth York · since 2025Ten ElevenBurlingame · $3M – $15M checks · since 2024TransLink CapitalPalo Alto · $1M – $5M checksU.S. Air Forcesince 2021Ubiquity VenturesPalo Alto · $1M – $3M checks

Co-founders at Eclypsium

YBYuriy Bulygin
Yuriy BulyginCo-founder
ABAlex Bazhaniuk
Alex BazhaniukCo-founder
ABAlex B
Alex BFounder

Experience

  1. Ten Eleven VenturesFounder and Managing Membercurrent2015 — present
  2. National Venture Capital AssociationBoard Membercurrent2025 — present
  3. IQM Quantum ComputersBoard Member, Investorcurrent2025 — presentFinland, Germany
  4. Harmonic SecurityBoard Member, Investorcurrent2023 — presentLondon and San Francisco
  5. RiPSIM TechnologiesBoard Member, Investorcurrent2024 — presentAshburn, Virginia, United States
  6. FivecastBoard Member, Investorcurrent2023 — presentAdelaide, South Australia, Australia
  7. Eclypsium, Inc.Board Member, Investorcurrent2022 — presentPortland, Oregon
  8. CywareBoard Member, Investorcurrent2021 — presentNew York and Charlotte, NC
  9. KasadaBoard Member, Investorcurrent2020 — presentSydney and New York
  10. Ordr Inc.Board Member, Investorcurrent2018 — presentSanta Clara, CA
  11. Sonrai SecurityBoard Member, Investorcurrent2019 — presentNew York, NY / Fredericton, NB
  12. VarianceInvestorcurrent2026 — present
  13. Fig SecurityInvestorcurrent2026 — present
  14. Geordie AIInvestorcurrent2025 — present
  15. Guardare, Inc.Investorcurrent2025 — present
  16. Fleet Device ManagementInvestorcurrent2025 — present
  17. VulnCheckInvestorcurrent2025 — present
  18. JazzInvestorcurrent2025 — present
  19. furlInvestorcurrent2025 — present
  20. HypernativeInvestorcurrent2025 — present
  21. Rig SecurityInvestorcurrent2025 — present
  22. SaviyntInvestorcurrent2025 — present
  23. DarkhiveInvestorcurrent2024 — present
  24. Twine SecurityInvestorcurrent2024 — present
  25. BlueFlag SecurityInvestorcurrent2024 — present
  26. Silent Push Inc.Investorcurrent2023 — present
  27. AembitInvestorcurrent2023 — present
  28. BLACKBIRD.AIInvestorcurrent2023 — present
  29. Device AuthorityInvestorcurrent2023 — present
  30. Red AccessInvestorcurrent2022 — presentIsrael
  31. HiddenLayerInvestorcurrent2022 — presentAustin, Texas
  32. VaultreeInvestorcurrent2022 — presentIreland
  33. CorshaInvestorcurrent2022 — present
  34. Immersive LabsInvestorcurrent2022 — presentUnited Kingdom
  35. BarracudaInvestorcurrent2022 — present
  36. StrivacityInvestorcurrent2022 — present
  37. SemperisInvestorcurrent2022 — present
  38. BlumiraInvestorcurrent2021 — presentAnn Arbor, Michigan, United States
  39. NetSPIInvestorcurrent2021 — presentMinneapolis, MN
  40. Anchorage DigitalInvestorcurrent2021 — present

Skills & more

Enterprise Software61SaaS24Security38Cloud Computing35Mobile3Identity SystemsTeam Building10Start-ups99Venture Capital56Private Equity13Investments13Strategic Partnerships78
+12 moreMergersMarketing StrategyNew Business DevelopmentSales ManagementBoard of Director experienceBoard of DirectorsEncryptionManagement ConsultingStrategyStrategic PlanningLeadershipMobile Devices

From Alex's professional profile.

Deals · 2

EclypsiumBoard seat

via Ten Eleven · filed Nov 2024 · $35M raise

Sonrai SecurityBoard seat

via Ten Eleven · filed Nov 2020 · $20M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Board seats

Ripsim

Investor

[redacted]AuraAxis SecurityBlueflag SecurityCybergrxCylanceCywareDarktraceDigital ShadowsDrizlyFivecastGoSecure (formerly CounterTack)Harmonic SecurityHexaditeIQM Quantum ComputersJASKKasadaOrdrPing IdentityRevelockRipsimTwistlock

Sources: SEC Form D filings · curated public sources.

Colleagues at Ten Eleven

Andrew J Doll
Partner at Ten Eleven
Ben Charlson
Senior Associate at Ten Eleven
Brian Draves
Partner & COO at Ten Eleven
Collin Mazgaloff
Associate at Ten Eleven
Dani Andrade
Director of Events at Ten Eleven
Dave Palmer
Partner at Ten Eleven
Dixon Doll
Partner at Ten Eleven
Grace Cassy
Investing at CyLon Ventures

Network10

Martin CasadoScout
General Partner at Andreessen Horowitz
Dixon DollScout
Partner at Ten Eleven
Dixon Doll, Jr.Scout
Investor at Ten Eleven
Eileen BurbidgeScout
Partner at Passion Capital
Martin DuursmaScout
Partner at Main Sequence Ventures
Andrew J Doll
Partner at Ten Eleven
Belizar Marinov
Investment Principal at Eleven Ventures
Brian Draves
Partner & COO at Ten Eleven
Collin Mazgaloff
Associate at Ten Eleven
Dave Palmer
Partner at Ten Eleven

Investors connected to Alex in public investor directories — a warm-intro map.

Frequently asked questions

Who is Alex Doll?
Alex Doll, co-founder of PGP Corporation (acquired by Symantec), is a career security operator and investor whose founder experience gives him empathy and strong credibility with cybersecurity entrepreneurs.
Where does Alex Doll work?
Alex Doll is Founder & Managing Partner at Ten Eleven and Board director at Harmonic Security and Board director at Ripsim and Board director at Eclypsium.
What does Alex Doll invest in?
Alex Doll invests in AI & Machine Learning, Crypto & Web3, Cybersecurity, Data & Infrastructure, Fintech.
What check size does Alex Doll write?
Alex Doll typically writes checks of $3M – $15M.
What boards does Alex Doll sit on?
Alex Doll holds tracked board seats at Eclypsium, Ripsim, Sonrai Security.
What companies has Alex Doll invested in?
Investments tracked here include [redacted], Aura, Axis Security, Blueflag Security, Cybergrx, Cylance, Cyware, Darktrace, Digital Shadows, Drizly, Eclypsium, Fivecast, and 12 more.
Where did Alex Doll go to school?
Alex Doll studied at Stanford University (MBA); University of Pennsylvania (BS, Systems Engineering); The Wharton School (BSE, Finance).

Same school

Shared employers