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Josh Bilenker

InvestorFounder

Operating Partner at Aisling Capital · Founder at Treeline Biosciences · Board director at Viewray · Board director at Lensar

FoundedTreeline Biosciences

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21 people in our graph can introduce you to Josh.

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Ask Russ Donda to introduce you to Josh

You →Russ · together at Viewray →Josh

Ask Jamie Chen to introduce you to Josh

You →Jamie · 6 people · together at Treeline Biosciences →Josh

Ask Sam Okafor to introduce you to Josh

You →Sam · 5 people · together at Aisling Capital →Josh

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About

Bilenker, an MD, joined Aisling in 2006 and has been an Operating Partner since 2014. He served as CEO of portfolio company Loxo Oncology until its acquisition by Eli Lilly and is now CEO and co-founder of Treeline Biosciences. He holds an MD from Johns Hopkins and an AB from Princeton.

Likely email· guessed from name + firm domain, not firm-published

Founder at Treeline Biosciences

Intro paths

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In turn, Josh can intro founders to Treeline Biosciences's investors below.

Treeline Biosciences's investors · 8

Aisling CapitalNew York · since 2025ARCH Venture PartnersChicago · $50K – $250M checks · since 2025Casdin CapitalNew York · since 2025Fidelity InvestmentsBoston · since 2025GV (Google Ventures)Mountain View · $250K – $50M checks · since 2025OrbiMedNew York · $1M – $75M checks · since 2025Rock Springs CapitalBaltimore · since 2025T. Rowe PriceBaltimore · since 2025

Co-founders at Treeline Biosciences

JE
Jeffrey EngelmanExecutive Officer, Director, Promoter
JB
Josh BilenkerFounder

Board director at Viewray

Intro paths

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In turn, Josh can intro founders to Viewray's investors below.

Viewray's investors · 4

Aisling CapitalNew York · since 2008F-Prime CapitalCambridge · $3M – $10M checks · since 2014OrbiMedNew York · $1M – $75M checks · since 2014Xeraya CapitalKuala Lumpur

Co-founders at Viewray

JFJames F. Dempsey
James F. DempseyExecutive Officer, Director

Board director at Lensar

Intro paths

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In turn, Josh can intro founders to Lensar's investors below.

Lensar's investors · 2

Aisling CapitalNew York · since 2014Versant Venture AIV HoldingsSan Francisco · since 2023

Co-founders at Lensar

RW
Randy W FreyDirector

Deals · 1

LensarBoard seat

via Aisling Capital · filed Jan 2015 · $20M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Sources: SEC Form D filings · curated public sources.

Colleagues at Aisling Capital

Aftab Kherani
Operating Partner at Aisling Capital
Andrew Schiff
Managing Partner at Aisling Capital
Carol Zikopoulos
Head of Human Resources and Compliance Manager at Aisling Capital
Eric Aguiar
Partner at Aisling Capital
Hannah Wieder
Controller at Aisling Capital
Katie Tansey
Vice President of Investor Relations and Marketing at Aisling Capital
Robert Wenzel
Chief Financial Officer and Chief Compliance Officer at Aisling Capital
Scott Braunstein
Operating Partner at Aisling Capital

Frequently asked questions

Who is Josh Bilenker?
Bilenker, an MD, joined Aisling in 2006 and has been an Operating Partner since 2014. He served as CEO of portfolio company Loxo Oncology until its acquisition by Eli Lilly and is now CEO and co-founder of Treeline Biosciences. He holds an MD from Johns Hopkins and an AB from Princeton.
Where does Josh Bilenker work?
Josh Bilenker is Founder of Treeline Biosciences and Operating Partner at Aisling Capital and Board director at Viewray and Board director at Lensar.
What companies did Josh Bilenker found?
Josh Bilenker founded Treeline Biosciences.
What boards does Josh Bilenker sit on?
Josh Bilenker holds tracked board seats at Lensar.
What companies has Josh Bilenker invested in?
Investments tracked here include Aragon Pharmaceuticals, Lensar, Loxo Oncology, Roka Bioscience, T2 Biosystems, Viewray.