/Investor DB

Eric F. Thiessen

Angel network

Pre-Seed–Seed · 2 people tracked

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Investment thesis

Thielsen Capital concentrates on building life science tools businesses, partnering with founders in a hands-on way. The firm emphasizes that a company's financial model, strategy, tactics, and cap table are interconnected parts of a single picture, and it advises founders on navigating these elements together as they grow their companies.

Source: firm website, verified Oct 2, 2026.

Stage
Pre-Seed–Seed
Founded
2022
Tracked investments
4
Acquisitions
1

Team · 2 people

from the firm's website & public directories
Mike Stadnisky· Managing Directorin

Managing director at Thielsen Capital who discussed the firm's approach to building life science tools businesses and advice for founders in a podcast appearance.

Eric Thiessenin

What they invest in

from 3 of 4 portfolio companies

AI & Machine Learning ×2Biotech ×2Enterprise Software ×2Hardware ×2Data & Infrastructure ×1Healthtech ×1

HQs:United States×3

Investments · 4 tracked

founders shown can be your intro path
Parhelia Biosciencesparheliabio.com

Parhelia Bio builds laboratory instruments that automate sample preparation for spatial biology and flow cytometry, handling steps like dewaxing, antigen retrieval, staining, and panel mixing.

AI & Machine LearningBiotechHardware

Redbirdredbird.ioinSeed

Redbird provides an AI-powered conversational platform that automates analytics, operations, and reporting workflows for business teams.

AI & Machine LearningData & InfrastructureEnterprise SoftwareNew York City, US

Erin Tavgac(Founder)inDeren Tavgac(Founder)in

Co-investorsAlumni VenturesB Capital GroupB4 CapitalFoundersX VenturesPhoenix FundSoma Capital+10 more

Thermo Fisher Scientificthermofisher.comin𝕏Acquired

Thermo Fisher provides life science products and laboratory equipment, including antibodies, consumables, biobanking resources, and Cryo-EM imaging systems for research labs and scientists.

BiotechEnterprise SoftwareHardwareHealthtechWaltham, US

Anthony Uzzo(Executive Officer, Director)inJoshua Geballe(Executive Officer, Director)James Gregory(Executive Officer, Director)Marc N. Casper(Executive Officer, Director)inAndrew J. Thomson(Executive Officer)Peter M. Wilver(Executive Officer)

Co-investorsARCH Venture PartnersBayMed Venture PartnersCross Creek AdvisorsExcel Venture ManagementHeran PartnersHighsage Ventures+6 more

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Phitonex

Frequently asked questions

What stage does Eric F. Thiessen invest at?
Eric F. Thiessen invests at the Pre-Seed, Seed stages.
What sectors does Eric F. Thiessen focus on?
Eric F. Thiessen focuses on Biotech, Deep Tech, Enterprise Software.
Who does Eric F. Thiessen co-invest with?
Eric F. Thiessen most often shares deals with ARCH Venture Partners, BayMed Venture Partners, Cross Creek Advisors, among 6 tracked co-investors.

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