Mastersfund™ is a venture capital firm and venture debt provider. Based in Seattle, Washington, United States. Known portfolio companies include Tribute, Pagedip, Automaton, Fyrii, Humming and Advocat, 8 companies in all.
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Investment focus
- Sector
- HealthcareSaaS
- Focus
- Digital HealthEnterprise SaaSRevenue-Based Financing
Who to pitch at Mastersfund™
Mastersfund™ portfolio companies (8)
- Tribute
- Pagedip
- Automaton
- Fyrii
- Humming
- Advocat
- Bold Reuse
- Heywell
Co-investors
Funds that share portfolio companies with Mastersfund™.
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About Mastersfund™
The firm's listing covers sectors Healthcare and SaaS, and focus areas Digital Health, Enterprise SaaS and Revenue-Based Financing; known deals cluster at Pre-Seed and Seed.
Gillian Muessig (Managing Director) and Walter Greenberg (Venture Partner) are listed as the contacts to pitch at Mastersfund™.
Across the known portfolio, 6 co-investors appear alongside Mastersfund™, including Reign Ventures, 9Mile Labs and Puget Sound Venture Club.
Frequently asked questions
What is Mastersfund™?
Mastersfund™ is a venture capital firm and venture debt provider based in Seattle, Washington, United States, with a known portfolio of 8 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Mastersfund™ invest in?
Listed sectors include Healthcare and SaaS; listed focus areas include Digital Health, Enterprise SaaS and Revenue-Based Financing. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Mastersfund™ invest at?
The known deals of Mastersfund™ include Pre-Seed and Seed rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Mastersfund™?
Both people on file at Mastersfund™ are listed as contacts for the firm, each with their own profile page.
How do I contact Mastersfund™?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The 2 people attached to the firm have their own pages, each showing whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal