Tammi Jantzen
Venture investor in Platteville
Platteville, Wisconsin
Tammi Jantzen, Venture investor in Platteville is an active investor based in Platteville, Wisconsin. This profile covers what Tammi Jantzen backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEAcceleratorInvestor
- Stages
- Early Stage VentureCrowdfunding
- Invests in
- Healthcare & Biotech
- Location
- Platteville, Wisconsin
- Typical check
- $263K
- Past investments
- 1
Notable investments
Naya HealthHow to reach Tammi Jantzen
Angels and operators like Tammi Jantzen 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. "Tammi Jantzen." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/tammi-jantzen
Frequently Asked Questions
What does Tammi Jantzen invest in?
Tammi Jantzen invests in Healthcare & Biotech, typically at Early Stage Venture and Crowdfunding. Match your sector and stage, then reach out with a personalized pitch.
What stage does Tammi Jantzen invest at?
Tammi Jantzen typically invests at Early Stage Venture and Crowdfunding. Lead with traction that fits the stage when you reach out.
What is Tammi Jantzen's typical check size?
Tammi Jantzen typically writes checks around $263K. 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.