Mark Dumas is an angel investor and operator angel based in Washington, District of Columbia, United States. The known portfolio counts 24 companies, including Palantir Technologies, Blokable, OwnLocal, Bento, Crux, Stayful, Dwell, CapLinked, Automate Ads, Depict, Riskpulse and Flow Labs.
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Investment focus
Contacts
Mark Dumas portfolio companies (24)
- Palantir Technologies
- Blokable
- OwnLocal
- Bento
- Crux
- Stayful
- Dwell
- CapLinked
- Automate Ads
- Depict
- Riskpulse
- Flow Labs
- Italist
- ThreatSwitch
- PAKIBLE
- Senseware
- Weather Analytics
- Circa Victor
- Trip Tribe
- Auction Mobility
- Blackridge
- Ombitron
- Peak Positioning Technologies
- PlayCall
Affiliated funds' portfolios
Managing Partner & Founder at Okeanos, whose known portfolio counts 7 companies
- Tidal Cyber
- VEDA Data Solutions
- ThreatSwitch
- Watergenics
- AdipoPharma
- Lora DiCarlo
- RoundlyX
Investor Profile
The known portfolio sits in sectors Consumer, FinTech and SaaS, and focus areas Big Data, Data, Data Analytics and E-Commerce.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
Colleagues at Okeanos
John Burke
Partner
Great Falls, United States
Justin Heaton
Finance & Investment Operations Associate
Falls Church, United States
Aaron Berkey
Co-Founder Managing Partner
Great Falls, United States
Kim Ziesemer
Investor
Boulder, United States
John Shomaker
Venture Partner
Washington, United States
Michael Rutledge
Venture Partner
Vienna, United States
Michelle Leyden Li
Investor
San Diego, United States
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Frequently asked questions
Who is Mark Dumas?
Mark Dumas is an angel investor and operator angel based in Washington, District of Columbia, United States with 24 known investments on file, among them Palantir Technologies, Blokable and OwnLocal. The sections above list the sectors and firms attached to that record.
What does Mark Dumas invest in?
Listed sectors include Consumer, FinTech and SaaS; listed focus areas include Big Data, Data, Data Analytics and E-Commerce. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
Which firm is Mark Dumas listed at?
Mark Dumas is listed as Managing Partner & Founder at Okeanos. 7 other people in the database share a firm with Mark Dumas.
How do I contact Mark Dumas?
An email address, a phone number and a LinkedIn page are on file for Mark Dumas. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal