Mark Simmer
Managing Partner at Clear Haven Capital Management, LLC
New York, United States
Mark Simmer, Managing Partner at Clear Haven Capital Management, LLC is an active investor based in New York, United States. This profile covers what Mark Simmer backs, at which stage, and how founders can reach out in 2026.
Mark Simmer invests in SaaS & Enterprise, Fintech and Artificial Intelligence, typically at Seed, Series A and Early Stage Venture.
- Investor type
- VC
- Stages
- SeedSeries AEarly Stage Venture
- Invests in
- SaaS & EnterpriseFintechArtificial Intelligence
- Location
- New York, United States
- Typical check
- $500K
How to reach Mark Simmer
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Cite this page
Round Funded. "Mark Simmer." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/mark-simmer
Frequently Asked Questions
Who is Mark Simmer?
Mark Simmer, Managing Partner at Clear Haven Capital Management, LLC is an active investor based in New York, United States. Mark Simmer invests in SaaS & Enterprise, Fintech and Artificial Intelligence, typically at Seed, Series A and Early Stage Venture.
What does Mark Simmer invest in?
Mark Simmer invests in SaaS & Enterprise, Fintech and Artificial Intelligence, typically at Seed, Series A and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Mark Simmer invest at?
Mark Simmer typically invests at Seed, Series A and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Mark Simmer's typical check size?
Mark Simmer typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.