Alex Doll
InvestorManaging 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
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 · 3
Co-founders at Harmonic Security
BW
Bryan Woolgar-O'NeilExecutive Officer, Director
AE
Alastair Ewan PatersonExecutive Officer, Director
Board director at Ripsim
Intro paths
→
In turn, Alex can intro founders to Ripsim's investors below.
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 – $184M 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 · $4M – $80M checks · since 2025Sixty Degree CapitalNorth York · since 2025Ten ElevenBurlingame · $3M – $15M checks · since 2024TransLink CapitalSilicon Valley · $1M – $5M checksU.S. Air Forcesince 2021Ubiquity VenturesPalo Alto · $1M – $3M checks
Co-founders at Eclypsium
YB
Yuriy BulyginCo-founder
AB
Alex BazhaniukCo-founder
AB
Alex BFounder
Experience
- Ten Eleven VenturesFounder and Managing Membercurrent2015 — present
- National Venture Capital AssociationBoard Membercurrent2025 — present
- IQM Quantum ComputersBoard Member, Investorcurrent2025 — presentFinland, Germany
- Harmonic SecurityBoard Member, Investorcurrent2023 — presentLondon and San Francisco
- RiPSIM TechnologiesBoard Member, Investorcurrent2024 — presentAshburn, Virginia, United States
- FivecastBoard Member, Investorcurrent2023 — presentAdelaide, South Australia, Australia
- Eclypsium, Inc.Board Member, Investorcurrent2022 — presentPortland, Oregon
- CywareBoard Member, Investorcurrent2021 — presentNew York and Charlotte, NC
- KasadaBoard Member, Investorcurrent2020 — presentSydney and New York
- Ordr Inc.Board Member, Investorcurrent2018 — presentSanta Clara, CA
- Sonrai SecurityBoard Member, Investorcurrent2019 — presentNew York, NY / Fredericton, NB
- VarianceInvestorcurrent2026 — present
- Fig SecurityInvestorcurrent2026 — present
- Geordie AIInvestorcurrent2025 — present
- Guardare, Inc.Investorcurrent2025 — present
- Fleet Device ManagementInvestorcurrent2025 — present
- VulnCheckInvestorcurrent2025 — present
- JazzInvestorcurrent2025 — present
- furlInvestorcurrent2025 — present
- HypernativeInvestorcurrent2025 — present
- Rig SecurityInvestorcurrent2025 — present
- SaviyntInvestorcurrent2025 — present
- DarkhiveInvestorcurrent2024 — present
- Twine SecurityInvestorcurrent2024 — present
- BlueFlag SecurityInvestorcurrent2024 — present
- Silent Push Inc.Investorcurrent2023 — present
- AembitInvestorcurrent2023 — present
- BLACKBIRD.AIInvestorcurrent2023 — present
- Device AuthorityInvestorcurrent2023 — present
- Red AccessInvestorcurrent2022 — presentIsrael
- HiddenLayerInvestorcurrent2022 — presentAustin, Texas
- VaultreeInvestorcurrent2022 — presentIreland
- CorshaInvestorcurrent2022 — present
- Immersive LabsInvestorcurrent2022 — presentUnited Kingdom
- BarracudaInvestorcurrent2022 — present
- StrivacityInvestorcurrent2022 — present
- SemperisInvestorcurrent2022 — present
- BlumiraInvestorcurrent2021 — presentAnn Arbor, Michigan, United States
- NetSPIInvestorcurrent2021 — presentMinneapolis, MN
- Anchorage DigitalInvestorcurrent2021 — present
Skills & more
Enterprise Software61SaaS24Security38Cloud Computing35Mobile3Identity SystemsTeam Building10Start-ups99Venture Capital56Private Equity13Investments13Strategic Partnerships78
+12 more
MergersMarketing StrategyNew Business DevelopmentSales ManagementBoard of Director experienceBoard of DirectorsEncryptionManagement ConsultingStrategyStrategic PlanningLeadershipMobile DevicesFrom 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
Per SEC Form D filings.
Colleagues at Ten Eleven
Andrew J Doll
Partner at Ten Eleven
Ben Charlson
Senior Associate at Ten Eleven
.avif)
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
Partner & Executive Chair of Security Trust and Resilience Network at Ten Eleven
Network9
Martin CasadoScout
General Partner at Andreessen Horowitz
Dixon DollScout
Partner 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 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.
- 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
Also attended Stanford University2,000
Peter ThielCo-founder & Partner at Founders FundReid HoffmanCo-founder of LinkedIn; Partner at GreylockKeith RaboisManaging Director at Khosla VenturesGarry TanPresident & CEO of Y CombinatorAlfred LinPartner at Sequoia CapitalAnn Miura-KoCo-founding Partner at Floodgate
+ 1,994 more
Also attended University of Pennsylvania1,026
Brian ActonCo-founder of WhatsApp; co-founder of Signal FoundationKunal BahlCo-founder of Snapdeal; co-founder of Titan CapitalDasha MaggioPartner at Felicis Ventures, writer on venture capital and founder psychologyNancy WangInvestor at Felicis VenturesLeah von SiemensPartner at Manta Ray VenturesEghosa OmoiguiFounder and Managing General Partner at EchoVC Partners
+ 1,020 more
Also attended The Wharton School1,984
Fred WilsonCo-founder & Partner at Union Square VenturesSarah GuoFounder & General Partner of ConvictionJosh KopelmanFounder and Partner at First Round CapitalAydin SenkutFounder & Managing Partner at FelicisKunal BahlCo-founder of Snapdeal; co-founder of Titan CapitalJack AbrahamFounder, CEO & Managing Partner of Atomic
+ 1,978 more
Also attended Jerome Fisher M&T Program33
Kunal BahlCo-founder of Snapdeal; co-founder of Titan CapitalJoe TsaiPartner at Mucker CapitalOm ShastriInvestor at Dorm RoomManeesha GhiyaManaging Partner at FemHealth VenturesSophia AfrickInvestor at Long Ridge Equity PartnersParth ChopraPartner at Bain Capital Crypto
+ 27 more
Shared employers
Also worked at Cyware3
Also worked at Geordie AI5
Also worked at Jazz7
Lior AvisarVenture Investor at Alpha PartnersLiran GrinbergCo-Founder & Managing Partner at Team8Sean RobinsonCybersecurity Advisory Board at Florida FundersKobi SambourskyCo-Founder and Managing Partner at Glilot Capital PartnersMark GoodmanManaging Partner at MassMutual VenturesShay MichelManaging Partner at toDay Ventures
+ 1 more
