Heidi Roizen is a venture capitalist and partner at Threshold Ventures. She co-founded T/Maker and served as its CEO, and has held roles at Apple and Stanford.
What Heidi can write
Threshold Ventures writes $10M to $30M checks, larger than 97% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: Threshold Ventures.Career
- T/Maker · co-founder and CEO
- Apple · VP of worldwide developer relations1999
- Threshold Ventures · PartnerNow
- T/Maker · CEO
Companies founded
Investments named in public bios
Focus
Education
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Who is Heidi Roizen?
Heidi Roizen is a venture capitalist and partner at Threshold Ventures. She co-founded T/Maker and served as its CEO, and has held roles at Apple and Stanford.
How much does Heidi Roizen invest?
Heidi Roizen invests through Threshold Ventures, which writes checks of $10M to $30M at pre-seed, seed.
How do I pitch Heidi Roizen?
Email [email protected], the firm's inbox for founders, and name Heidi in the subject. A warm intro from a founder Threshold Ventures backed works better.
What did Heidi Roizen do before Threshold Ventures?
co-founder and CEO at T/Maker; VP of worldwide developer relations at Apple; CEO at T/Maker.
Last updated 2026-10-15. Is this you? Ask for a correction.