Alex Tosheff
InvestorFounderVenture Partner at Syn Ventures Seed Management Llc · Board director at Aiceberg
San Diego Metropolitan Area
FoundedAiceberg
About
Alex Tosheff brings decades as a senior security executive at VMware and PayPal plus CISA advisory and Tenable board experience, uniquely guiding national cyber priorities and scalable enterprise security models.
Invests in
AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareInsurTech
Board director at Aiceberg
Intro paths
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In turn, Alex can intro founders to Aiceberg's investors below.
Aiceberg's investors · 2
Co-founders at Aiceberg
AS
Alexander SchlagerExecutive Officer, Director
Experience
- RegScaleIndependent Board Membercurrent2025 — present
- SYN VenturesVenture Partnercurrent2025 — present
- AIcebergBoard Membercurrent2025 — present
- AIcebergStrategic Advisorcurrent2024 — present
- TenableBoard Membercurrent2022 — present
- TenableExecutive Advisory Board Member2017 — 2022
- ZoomCEO Advisory Board Member2020 — 2025
- Cybersecurity and Infrastructure Security AgencyCybersecurity Advisory Commitee2023 — 2025
- VMwareSenior Vice President, Chief Security Officer2022 — 2024
- VMwareVice President, Chief Security Officer2017 — 2022Palo Alto, CA
- VMwareVice President, Chief Information Security Officer2014 — 2022Palo Alto, CA
- vArmourExecutive Advisory Board Member2014 — 2021
- GoSecureExecutive Advisory Board Member2014 — 2020
- PayPalChief Information Security Officer2008 — 2014
- PayPalHead of Global Information Security2008 — 2011San Diego
- Bill Me Later, Inc.Vice President, CISO BillMeLater Inc. (acquired by PayPal)2007 — 2008Washington DC-Baltimore Area
- PivxXCTO2004 — 2007
- St. Paul Venture CapitalVenture Partner2001 — 2004
- Science Application International, CorpCorporate Vice President, CTO1994 — 2001
Education
- California State University, FullertonBS, Physics1991 — 1993
Skills & more
Strategy60Leadership26Early Stage Investment2Venture Capital1Start-up VenturesCorporate Venture CapitalInformation Security81SaaS53Network Security63Application Security44Information Security Management35Cloud Computing59
+12 more
Enterprise SoftwarePaymentsPCI DSSBusiness StrategyVulnerability ManagementComplianceInformation TechnologyComputer SecurityEnterprise Risk ManagementSoftware as a Service (SaaS)Technical LeadershipIntegrationFrom Alex's professional profile.
Deals · 1
AicebergBoard seat
via Syn Ventures Seed Management Llc · filed Feb 2025 · $7.5M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Syn Ventures Seed Management Llc
Adam Cecil
Chief Operating Officer & Operating Partner at Syn Ventures Seed Management Llc
Amal Kothari
Principal at Syn Ventures Seed Management Llc
Art Coviello
Managing Partner at Syn Ventures Seed Management Llc
Chris Behrens
Principal at Syn Ventures Seed Management Llc
Dan Burns
IC Chairman for Seed Funds at Syn Ventures Seed Management Llc
Dylan Posner
Senior Associate at Syn Ventures Seed Management Llc
Glenn Chisholm
Operating Partner at Syn Ventures Seed Management Llc
Jay Leek
Managing Partner and Founder at Syn Ventures Seed Management Llc
Frequently asked questions
- Where does Alex Tosheff work?
- Alex Tosheff is Venture Partner at Syn Ventures Seed Management Llc and Founder at Aiceberg.
- What does Alex Tosheff invest in?
- Alex Tosheff invests in AI & Machine Learning, Cybersecurity, Developer Tools, Enterprise Software, InsurTech.
- What companies did Alex Tosheff found?
- Alex Tosheff founded Aiceberg.
Same school
Also attended California State University, Fullerton15
Gabrielle HamillOperations Manager at March Capital PartnersDiana ReyesInvestor at Khosla VenturesEira TobrandInvestor at Luminar VenturesAaron MizrahiAmazon Partner at True Beauty VenturesLoren AsmusHead of Investor Relations at UTXO ManagementHal WalbrinkVenture Partner at Suncoast Ventures
+ 9 more
Shared employers
Also worked at Tenable7
Shawn KungInvestor at Inception Studio CapitalRichard WellsManaging Director at Insight PartnersRon GulaPresident at Gula Tech AdventuresCyndi GulaManaging Partner at Gula Tech AdventuresTim McKnightVenture Partner at Syn Ventures Seed Management LlcBrooke SeawellVenture Partner at New Enterprise Associates (NEA)
+ 1 more
Also worked at Zoom31
Pat GradyPartner at Sequoia CapitalSangeen ZebInvestor at GV (Google Ventures)Houman HaghighiPartner, Business & Corporate Development at Menlo VenturesRyan AzusFormer Chief Revenue Officer at Zoom Video Communications at Scale Venture PartnersJuliette PetitChief of Staff at Keen Venture PartnersQuinn LiSenior Vice President & Global Head of Qualcomm Ventures at Qualcomm Ventures
+ 25 more
Also worked at VMware101
Martin CasadoGeneral Partner at Andreessen HorowitzJavier SolteroSenior Venture Partner at Felicis VenturesJob SimonVenture Partner and CTO at Monta Vista CapitalHemamAdvisor at Clear VenturesBogomil BalkanskyHome chef and food blogger, venture capital partner, and wildlife photographerPeter GiordanoFormer Global Director GTM Strategy at Scale Venture Partners
+ 95 more
