Jeffrey Tong
InvestorPartner at Third Rock Ventures
West Coast
Writes $100K – $5M checks · typically $1.5M
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About
Jeffrey Tong is a Partner at Third Rock Ventures, where he draws on operational experience building and growing early-stage biotechnology companies to focus on drug discovery and development across the firm's portfolio. Before joining Third Rock in 2016, he was Executive Chairman of Delinia, CEO of Nora Therapeutics, and part of the founding management team at Infinity Pharmaceuticals. Earlier in his career he worked at McKinsey & Co and was a founding researcher at the Harvard Bauer Center for Genomics Research. Across his career he has raised capital from equity markets and pharma partnerships and led companies from preclinical through Phase 3 development, integrating science and business strategy.
Contact· published on Jeffrey's own website
Beyond investing
- Education
- Earned an A.B. from Harvard College. Earned an A.M. from Harvard University. Earned an M.M.S. from Harvard Medical School. Earned a Ph.D. from Harvard University.
From Jeffrey's own website — common ground for a warm intro.
Deals · 1
SepternaBoard seat
via Third Rock Ventures · filed Jul 2023 · $150M raise
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Investor
Ambys MedicinesARTBIOAsher BioMarea Therapeutics, Inc.TakkoTerremotobioTrace Neuroscience
Sources: SEC Form D filings · curated public sources.
Colleagues at Third Rock Ventures
Frequently asked questions
- Who is Jeffrey Tong?
- Jeffrey Tong is a Partner at Third Rock Ventures, where he draws on operational experience building and growing early-stage biotechnology companies to focus on drug discovery and development across the firm's portfolio. Before joining Third Rock in 2016, he was Executive Chairman of Delinia, CEO of Nora Therapeutics, and part of the founding management team at Infinity Pharmaceuticals. Earlier in his career he worked at McKinsey & Co and was a founding researcher at the Harvard Bauer Center for Genomics Research. Across his career he has raised capital from equity markets and pharma partnerships and led companies from preclinical through Phase 3 development, integrating science and business strategy.
- Where does Jeffrey Tong work?
- Jeffrey Tong is Partner at Third Rock Ventures.
- What check size does Jeffrey Tong write?
- Jeffrey Tong typically writes checks of $100K – $5M.
- What boards does Jeffrey Tong sit on?
- Jeffrey Tong holds tracked board seats at Septerna.
- What companies has Jeffrey Tong invested in?
- Investments tracked here include Ambys Medicines, ARTBIO, Asher Bio, Marea Therapeutics, Inc., Septerna, Takko, Terremotobio, Trace Neuroscience.
Founder mafias
McKinsey & Company mafia937
Also came through, then founded or led a company.
Third Rock Ventures mafia33
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Third Rock Ventures's own website, regulatory filings and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights



















