Investor profile
Mark William Lewis
Angel, Operator angel & Managing Partner at Golani Ventures, Venture Partner at Purpose Built
An angel investor and operator angel based in San Francisco, California, United States, Mark William Lewis has 8 known investments: slice, Grin, May Mobility, Heliogen, Boon, Umbra, Shelfleet and PERMITScom PermitZone.
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Investment focus
Contacts
Mark William Lewis portfolio companies (8)
- slice
- Grin
- May Mobility
- Heliogen
- Boon
- Umbra
- Shelfleet
- PERMITScom PermitZone
Affiliated funds' portfolios
Managing Partner at Golani Ventures, whose known portfolio counts 4 companies
- Navlungo
- Lumnion
- NOQ
- Viddexa AI
Venture Partner at Purpose Built, whose known portfolio counts 7 companies
- Wavely Diagnostics
- Coral Care
- Civic Eagle
- Twill
- VitalFlo
- PharmaCCX
- Candid Wholesale
Investor Profile
Founders in the listed sectors Climate, Consumer, Healthcare and SaaS, and focus areas Design, Enterprise SaaS and Productivity will recognize the pattern in this portfolio.
Mark William Lewis appears in Pre-Seed, Seed and Series B rounds across the known deals.
The portfolio and focus above give founders context on whether Mark William Lewis matches their raise.
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Frequently asked questions
Who is Mark William Lewis?
Mark William Lewis is an angel investor and operator angel based in San Francisco, California, United States with 8 known investments on file, among them slice, Grin and May Mobility. The sections above list the sectors, stages and firms attached to that record.
What does Mark William Lewis invest in?
Listed sectors include Climate, Consumer, Healthcare and SaaS; listed focus areas include Design, Enterprise SaaS and Productivity. 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.
What stage does Mark William Lewis invest at?
The known deals of Mark William Lewis include Pre-Seed, Seed and Series B rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Mark William Lewis listed at?
Mark William Lewis is listed as Venture Partner at Purpose Built. 3 other people in the database share a firm with Mark William Lewis.
How do I contact Mark William Lewis?
An email address, a phone number and a LinkedIn page are on file for Mark William Lewis. 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