United States · Funded startup
Funding summaryUpdated 26 Oct 2026
$530Mraised across 3 rounds since 2019, from 4 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Source recorded
Reported by Firms' own news pages and 1 other
Frazier Healthcare PartnersLead
Janus Henderson Investors
Abingworth
Richard King Mellon Foundation
MedicxiReported by FinSMEs
From Phathom Pharmaceuticals's own website: 1 founder, 4 on the team.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Missing a round, or an investor who was in one? Tell us.
This firm lists Phathom Pharmaceuticals as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Phathom Pharmaceuticals's investors include Janus Henderson Investors, Hercules Capital, Frazier Healthcare Partners, New Enterprise Associates and RA Capital Management, and 9 more on record.
Phathom Pharmaceuticals has raised $530M across 3 rounds since 2019.
Phathom Pharmaceuticals's most recent round was an Undisclosed round of $130M in Jan 2026.
Phathom Pharmaceuticals's largest round on record is $260M (Debt), in May 2022.
Phathom Pharmaceuticals's first round on record, in May 2019, was backed by Frazier Healthcare Partners, Janus Henderson Investors and Abingworth and 6 others.
Phathom Pharmaceuticals's latest named round is an Undisclosed round, in Jan 2026.
Phathom Pharmaceuticals is based in the United States.
Frazier Healthcare Partners led the Undisclosed round in 2019.
In the same sector, and raised in the last eighteen months.
Search every investor by what they have actually funded, then narrow to your stage and market. Free.
United States · 
