Who invested in Gossamer Bio

4 rounds we have observed, with the 10 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

BiotechHealthcare

Raised 2 months ago

Funding summaryUpdated 26 Oct 2026

$567Mraised across 4 rounds since 2017, from 4 sources

$100MSeries A$230MSeries B$212MRound$25MRound

Latest round: Round, $25MSept 2026
Biggest round: $230MSeries B · Jul 2018
Investors: 10

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

20172019202120232025

$100MSeries A$230MSeries B$212MRound$25MRound

First round: Series A, $100M
Biggest round: $230M
Usual gap between rounds: 3.2 years

The rounds

Sept 2026
Round$25M
No investor was named in the report.
Filed with the SEC (Form D); no report of this raise yetSEC filing: $25M sold, first sale Sept 2026
Jul 2023
Round$212M4 new2 returning
Source recordedSEC filing: $212M sold, first sale Jul 2023
Jul 2018
Series B$230M4 new1 returning
- Omega Funds
- Arch
- Goldbell Group
- Baupost Group
- Hillhouse Capital/ Invus
Reported by BiospaceSEC filing: $230M sold, first sale Jul 2018
Jan 2017
Series A$100M2 new
- ARCH Venture Partners
- Omega Funds
Reported by FinSMEs

Founders and team

From Gossamer Bio's own website: 1 founder, 14 on the team.

Faheem HasnainCo-Founder, Chairman, and Chief Executive Officer

Christian WaageExecutive Vice President, Technical Operations & General Counsel
Conor O’DonovanSenior Vice President, Regulatory Affairs
Jeanine AnthonySenior Vice President, Marketing
Lou ChericoSenior Vice President, Finance & Treasury
Bob SmithChief Commercial Officer
Bryan GiraudoChief Operating Officer & Chief Financial Officer
Caryn PetersonChief Development Officer
Greg CiongoliDirector
John QuiselDirector
Russell J. CoxDirector
Sandra MilliganDirector
Skye DrynanDirector
Steven D. NathanDirector
Thomas DanielDirector

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Series A2017Series B2018Round2023Round2026

Omega Funds

ARCH Venture Partners

New Enterprise Associates

Goldbell GroupBaupost GroupHillhouse Capital/ Invus

Everyone who backed them

Omega FundsVC firm3rounds

ARCH Venture PartnersVC firm2rounds

New Enterprise AssociatesVC firm1round

Polaris PartnersVC firm1round

Hill House CapitalFamily office1round

Samsara BioCapitalVC firm1round

ArchHedge fund1round

Goldbell GroupGrowth equity1round

Baupost Groupno record of our own yet1round

Hillhouse Capital/ Invusno record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Gossamer Bio 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.

EcoR1 CapitalPrivate equityPer its own site

Quick answers about Gossamer Bio

Who invested in Gossamer Bio?

Gossamer Bio's investors include Omega Funds, ARCH Venture Partners, New Enterprise Associates, Polaris Partners and Hill House Capital, and 5 more on record.