John Josey
InvestorPartner at The Column Group · Board director at Day One Biopharmaceuticals · Board director at Circle Pharma
Dallas, Texas
Writes $100K – $5M checks · typically $1.5M
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You →Derek · together at Peloton Therapeutics (2019) →John
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You →Jamie · 7 people · together at Arraybiopharma →John
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About
Joined The Column Group as a Venture Partner in 2020. Former President and CEO of Peloton Therapeutics until its 2019 acquisition by Merck; earlier a founding management team member at Array BioPharma. Holds a PhD in organic chemistry.
Board director at Day One Biopharmaceuticals
Intro paths
In turn, John can intro founders to Day One Biopharmaceuticals's investors below.
Day One Biopharmaceuticals's investors · 7
Board director at Circle Pharma
Intro paths
In turn, John can intro founders to Circle Pharma's investors below.
Circle Pharma's investors · 10
Co-founders at Circle Pharma

Experience
- The Column GroupPartnercurrent2026 — present
- The Column GroupVenture Partner2020 — 2026
- Peloton TherapeuticsPresident and Chief Executive Officer2013 — 2019Dallas, Texas
- Peloton TherapeuticsPresident and Chief Scientific Officer2011 — 2013Dallas, TX
- Array BioPharma Inc.Vice President, Discovery Chemistry1998 — 2011
- AmgenScientist1995 — 1998
- Glaxo Inc.Research Scientist1991 — 1995Research Triangle Park, NC
Deals · 2
Circle PharmaBoard seat
via The Column Group · filed Jan 2025 · $117.4M raise
Day One BiopharmaceuticalsBoard seat
via The Column Group · filed Feb 2021 · $130M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at The Column Group
Frequently asked questions
- Who is John Josey?
- Joined The Column Group as a Venture Partner in 2020. Former President and CEO of Peloton Therapeutics until its 2019 acquisition by Merck; earlier a founding management team member at Array BioPharma. Holds a PhD in organic chemistry.
- Where does John Josey work?
- John Josey is Partner at The Column Group and Board director at Day One Biopharmaceuticals and Board director at Circle Pharma.
- What check size does John Josey write?
- John Josey typically writes checks of $100K – $5M.
- What boards does John Josey sit on?
- John Josey holds tracked board seats at Circle Pharma, Day One Biopharmaceuticals.
- Where did John Josey go to school?
- John Josey studied at Caltech (Postdoctoral Fellow); The University of Texas at Austin (Ph.D., Organic Chemistry); University of Colorado (MBA, Business Administration).
Founder mafias
The University of Texas at Austin mafia418
Also came through, then founded or led a company.
Caltech mafia183
Also came through, then founded or led a company.
Colorado State University mafia67
Also came through, then founded or led a company.
Amgen mafia52
Also came through, then founded or led a company.
University of Colorado mafia9
Also came through, then founded or led a company.
Same school
Also attended Caltech304
+ 298 more
Also attended The University of Texas at Austin948
+ 942 more
Also attended University of Colorado28
+ 22 more
Also attended Colorado State University150
+ 144 more
Shared employers
Also worked at The Column Group14
+ 8 more
Also worked at Peloton Therapeutics1
Also worked at Array BioPharma Inc.8
+ 2 more
Also worked at Amgen198
+ 192 more

















































































