Mike Ajnsztajn
Co-Founder at ACE Ventures
United States
Mike Ajnsztajn, Co-Founder at ACE Ventures is an active investor based in United States. This profile covers what Mike Ajnsztajn backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPECorporate VCInvestment PartnerFounderAccelerator
- Stages
- Early Stage VentureSeedSeries A
- Invests in
- MarketplaceSaaS & Enterprise
- Location
- United States
- Typical check
- $500K
- Past investments
- 2
Notable investments
How to reach Mike Ajnsztajn
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About this profile
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Cite this page
Round Funded. "Mike Ajnsztajn." Round Funded investor database, updated October 19, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/mike-ajnsztajn
Frequently Asked Questions
What does Mike Ajnsztajn invest in?
Mike Ajnsztajn invests in Marketplace and SaaS & Enterprise, typically at Early Stage Venture, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Mike Ajnsztajn invest at?
Mike Ajnsztajn typically invests at Early Stage Venture, Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Mike Ajnsztajn's typical check size?
Mike Ajnsztajn 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.