Ian Sigalow
Co-Founder and Managing Partner at Greycroft at Greycroft
New York City, New York
Ian Sigalow, Co-Founder and Managing Partner at Greycroft at Greycroft is an active investor based in New York City, New York. This profile covers what Ian Sigalow backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEInvestment PartnerFinance OperatorInvestor
- Stages
- Early Stage VentureSeries B
- Invests in
- FintechHealthcare & BiotechArtificial IntelligenceMedia & ContentSaaS & EnterpriseMarketing & AdTechMarketplace
- Location
- New York City, New York
- Typical check
- $1.8M
- Past investments
- 37
Notable investments
Kaleo Software
ClosedLoop.ai
Hippocratic AI
YieldStreet
Medly Pharmacy
TagMan
Collective Media
Resonate
Crowd Fusion
Flutterwave
Landing
PartnerizeHow to reach Ian Sigalow
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Cite this page
Round Funded. "Ian Sigalow." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/ian-sigalow
Frequently Asked Questions
What does Ian Sigalow invest in?
Ian Sigalow invests in Fintech, Healthcare & Biotech, Artificial Intelligence and Media & Content, typically at Early Stage Venture and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Ian Sigalow invest at?
Ian Sigalow typically invests at Early Stage Venture and Series B. Lead with traction that fits the stage when you reach out.
What is Ian Sigalow's typical check size?
Ian Sigalow typically writes checks around $1.8M. 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.