Investor profile
Mark Jacobsen
Corporate VC, Venture capital & Managing Director at O'Reilly AlphaTech Ventures
Mark Jacobsen is a Managing Director at O'Reilly AlphaTech Ventures, whose known portfolio counts 9 companies.
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Investment focus
- Sector
- AIHardwareHealthcareSaaS
Contacts
Affiliated funds' portfolios
Managing Director at O'Reilly AlphaTech Ventures, whose known portfolio counts 9 companies
- Pachama
- Science Exchange
- Particle
- Chairish
- Videra Health
- Paintbrush
- Impart Security
- Known Medicine
- Campago
Investor Profile
Founders in the listed sectors AI, Hardware, Healthcare and SaaS, and focus areas AI Applications, Cloud Infrastructure, Developer Tools and Digital Health fall inside that listing.
O'Reilly AlphaTech Ventures appears in Growth, Pre-Seed and Seed rounds across its known deals.
What the affiliated firm has backed is the closest available signal on whether Mark Jacobsen is worth approaching.
Colleagues at O'Reilly AlphaTech Ventures
Frequently asked questions
Who is Mark Jacobsen?
Mark Jacobsen is a corporate venture investor and venture capital investor based in San Francisco, California, United States, listed as Managing Director at O'Reilly AlphaTech Ventures. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Mark Jacobsen personally.
What does Mark Jacobsen invest in?
Listed sectors include AI, Hardware, Healthcare and SaaS; listed focus areas include AI Applications, Cloud Infrastructure, Developer Tools and Digital Health. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Mark Jacobsen invest at?
O'Reilly AlphaTech Ventures appears in Growth, Pre-Seed and Seed rounds across its known deals, and Mark Jacobsen is listed there as Managing Director. 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 Jacobsen listed at?
Mark Jacobsen is listed as Managing Director at O'Reilly AlphaTech Ventures. One other person in the database shares a firm with Mark Jacobsen.
How do I contact Mark Jacobsen?
An email address, a phone number and a LinkedIn page are on file for Mark Jacobsen. 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