Immusoft

Seattle, WA · Founded 2009 · Privately Held (backing)

Developer of novel therapies designed for the treatment of rare diseases. Immusoft is based in Seattle, WA and was founded in 2009. It was valued at $65.2 million at its later-stage round in Mar 2025, the last priced event on record. It has raised $54.8 million across 6 recorded rounds; the latest was a $4.6 million seed round in May 2024.

PMV mark · valuation
$65.2M
Oct 2026
Priced at
its later-stage round
Mar 2025
Total raised
$54.8M
Last round
Seed Round
May 2024

Who backs Immusoft?

29 investors
InvestorType
Founders FundVenture capital
Alexandria Venture InvestmentsOther
Highlight CapitalOther
Invariantes FundOther
GRIDS CapitalOther
NYBC VenturesVenture capital
WestcottFamily office
Ikarian CapitalHedge fund
BioRock Ventures—
Bios Partners—
+ 19 more investors · a free account shows the complete list
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Immusoft investors

29 investors are on record for Immusoft, including Founders Fund, Alexandria Venture Investments, Highlight Capital and Invariantes Fund. The seed round in May 2024 drew 25 investors.

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