David Langer
Advisor at Lionheart Ventures
San Francisco, California
David Langer, Advisor at Lionheart Ventures is an active investor based in San Francisco, California. This profile covers what David Langer backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment PartnerFounderInvestor
- Stages
- Seed
- Invests in
- Digital Health & HealthTechArtificial IntelligenceFoodTech & AgricultureFintechPropTech & Real EstateEdTechTravel & HospitalityHealthcare & Biotech
- Location
- San Francisco, California
- Typical check
- $250K
- Past investments
- 17
Notable investments
CalmDendra SystemsGray Swan AI
NeuroBionicsProLeads.io
BibliU
Groww
Good Money
ZamnaCareRevQuit GeniusHow to reach David Langer
Angels and operators like David Langer 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.
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Cite this page
Round Funded. "David Langer." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/david-langer
Frequently Asked Questions
What does David Langer invest in?
David Langer invests in Digital Health & HealthTech, Artificial Intelligence, FoodTech & Agriculture and Fintech, typically at Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does David Langer invest at?
David Langer typically invests at Seed. Lead with traction that fits the stage when you reach out.
What is David Langer's typical check size?
David Langer typically writes checks around $250K. 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.