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Bios Partners

VC

USBio/PharmaHealthtechDeep Tech

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Investment thesis

Bios Partners is a venture capital firm identifying advanced biotech in overlooked and under-invested markets in the U.S., which its team helps cultivate and bring to market. The firm's core thesis is that great science is evenly distributed throughout the country, yet venture capital tends to be concentrated on the coasts—especially in Silicon Valley and the Northeastern US. Bios seeks to disrupt this 'geographic favoritism' by investing in opportunities with equally compelling science across the Central US that are often overlooked and undervalued. The firm focuses on early-stage and growth-stage biopharmaceutical and medical device companies, leveraging a combined 90+ years of experience in hedge funds, private equity, clinical drug development, and public pharma/biotech analysis to fill the experiential void for portfolio company CEOs.

Notable quotes

I would tell people, I'm the least connected guy on Wall Street. That was my catch phrase.

Aaron Fletcher, PhD · Yash & Company Podcast, Spotify · 2019-06-26

It is really rewarding and exciting to see an entrepreneur grow his/her idea into a company.

Stella Robertson, PhD · Fort Worth Inc. Supporter of Entrepreneurship Award profile · 2023-11-20

My focus now is on giving back.

Stella Robertson, PhD · Fort Worth Inc. Supporter of Entrepreneurship Award profile · 2023-11-20

Team

Aaron G.L. Fletcher, PhD

Founder & Managing Director

Bio/PharmaHealthtechDeep Tech

Stella M. Robertson, PhD

Co-Founder & Partner

Bio/PharmaHealthtech

Leslie W. Kreis, Jr.

Co-Founder & Partner

Bio/PharmaHealthtech

John Fucci

Partner

Bio/PharmaHealthtech

Amanda de la Garza

Partner

Bio/PharmaHealthtech

Blake Pate

Vice President of Investments

Bio/PharmaHealthtech

Recent investments

CompanyRoundSizeDate
Renibus TherapeuticsSeries B$111m2025-07-17
Trefoil TherapeuticsSeries B2025-05-06
ONL TherapeuticsSeries D$65m2024-09-13
Opus GeneticsSeed$19m2021-09-23
Actuate TherapeuticsSeries B$7m2019-11-12
AzitraSeries A$14m2019-10-15
Lantern PharmaSeries A
Cognition TherapeuticsSeries A
Taysha Gene TherapiesSeries A
IN8bioSeries A

Frequent co-investors

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