Hart Callahan
Managing Director at Gemspring Capital
New York City, New York
Hart Callahan, Managing Director at Gemspring Capital is an active investor based in New York City, New York. This profile covers what Hart Callahan backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPE
- Stages
- SeedSeries ASeries BLate Stage Venture
- Invests in
- Artificial IntelligenceInsurTechHealthcare & BiotechSaaS & EnterpriseConsumer & RetailConsumer Goods (CPG)E-commerce & D2CFashion & Beauty
- Location
- New York City, New York
- Typical check
- $2M
- Past investments
- 84
Notable investments
ContinuumRxTrialScope
USPack Logistics
SiteSpectLookingGlass Cyber Solutions
Snagajob
VidSys
SolomonEdwardsStar2Star Communications
PrecyseDialogTech
Verisma Systems, Inc.How to reach Hart Callahan
Angels and operators like Hart Callahan reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
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Frequently Asked Questions
What does Hart Callahan invest in?
Hart Callahan invests in Artificial Intelligence, InsurTech, Healthcare & Biotech and SaaS & Enterprise, typically at Seed, Series A, Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Hart Callahan invest at?
Hart Callahan typically invests at Seed, Series A, Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Hart Callahan's typical check size?
Hart Callahan typically writes checks around $2M. Use it as a signal for whether your raise fits their stage.
How do I contact Hart Callahan?
Unlock Hart Callahan's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.