Heidi Roizen
Partner at Threshold Ventures
San Francisco, United States
Heidi Roizen, Partner at Threshold Ventures is an active investor based in San Francisco, United States. This profile covers what Heidi Roizen backs, at which stage, and how founders can reach out in 2026.
Heidi Roizen is a venture capitalist and corporate director, and a partner at Threshold Ventures.
- Investor type
- VC
- Stages
- SeedSeries A
- Invests in
- Artificial Intelligence
- Location
- San Francisco, United States
- Typical check
- $625K
How to reach Heidi Roizen
Angels and operators like Heidi Roizen 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.
Connect with Heidi Roizen
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 Heidi Roizen invest in?
Heidi Roizen invests in Artificial Intelligence, typically at Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Heidi Roizen invest at?
Heidi Roizen typically invests at Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Heidi Roizen's typical check size?
Heidi Roizen typically writes checks around $625K. Use it as a signal for whether your raise fits their stage.
How do I contact Heidi Roizen?
Unlock Heidi Roizen'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.