Charles Callahan
Managing Partner at Triangle Venture Partners, LLC
San Francisco, United States
Charles Callahan, Managing Partner at Triangle Venture Partners, LLC is an active investor based in San Francisco, United States. This profile covers what Charles Callahan backs, at which stage, and how founders can reach out in 2026.
Triangle Venture Partners, LLC works with startups and lower middle market firms seeking growth strategy assistance, new growth opportunities, and M&A strategy.
- Investor type
- VCPE
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- SaaS & EnterpriseFintechDigital Health & HealthTechMedia & Content
- Location
- San Francisco, United States
- Typical check
- $3.8M
How to reach Charles Callahan
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does Charles Callahan invest in?
Charles Callahan invests in SaaS & Enterprise, Fintech, Digital Health & HealthTech and Media & Content, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Charles Callahan invest at?
Charles Callahan typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Charles Callahan's typical check size?
Charles Callahan typically writes checks around $3.8M. Use it as a signal for whether your raise fits their stage.
How do I contact Charles Callahan?
Unlock Charles Callahan's verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
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.