United States · 
Who invested in Icosavax?
Icosavax's investors include Adams Street Partners, Qiming Venture Partners USA, RA Capital Management, Cormorant Asset Management and Vivo Capital, and 3 more on record.
2020202120222023
$51MSeries A$68MRound
United States · Funded startup
Who invested in Icosavax
Funding summaryUpdated 26 Oct 2026
$119Mraised across 2 rounds since 2019, from 2 sources
$51MSeries A$68MRound
- Latest round
- Round, $68MMay 2023
- Step-upi
- 1.3×
- Investors
- 8 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $51M Oct 2019
- Biggest round
- $68M Round · May 2023
- Between rounds
- 3.6 years from the last two
The rounds
- May 2023Round$68M4 new1 returning
Source recorded
- Oct 2019Series A$51M4 new
Reported by FinSMEsSEC filing: $30M sold, first sale Aug 2019
Founders and team
From the SEC filings it signed: 6 on the team.
- Adam K. SimpsonPresident and Chief Executive Officeri
- Charles A. RichardsonSenior Vice President, Technical Operationsi
- Cassia A. CearleyTreasurer, Chief Business Officeri
- Douglas A. HoltzmanChief Scientific Officer and Secretaryi
- Niranjan A. Kanesa-thasanChief Medical Officeri
- Tadataka YamadaChairman of the Boardi
On the board, as filediEric A. MoessingerJason A. HaflerMark A. McDadePeter A. KolchinskyTerry A. Gould
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.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Icosavax
How much has Icosavax raised?
Icosavax has raised $119M across 2 rounds since 2019.
When did Icosavax last raise?
Icosavax's most recent round was an Undisclosed round of $68M in May 2023.
What was Icosavax's biggest round?
Its most recent round, $68M in May 2023, is also its largest on record.
Who backed Icosavax first?
Icosavax's first round on record, in Oct 2019, was backed by Qiming Venture Partners USA, Adams Street Partners and Nano Dimension and 1 others.
What stage is Icosavax at?
Icosavax's latest named round is an Undisclosed round, in May 2023.
Where is Icosavax based?
Icosavax is based in the United States.
Who led Icosavax's rounds?
Qiming Venture Partners USA led the Series A in 2019.
Companies like Icosavax
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.