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
What is Immusoft worth?
$65.2MPrivateMarketView mark · Oct 2026

Valued at $65.2M at its later-stage round, Mar 2025. Nothing has traded since.

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Valuation timeline

0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026
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Markrounds hold their value until the next priced eventMark, today
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Immusoft funding history

6 rounds
DateRoundRaisedPost-money
May 2024Seed Round$4.6M▮
Sep 2020Early Stage VC$10.3M▮
Jan 2018Early Stage VC$20.2M▮
Oct 2016Seed Round$2.7M▮
Aug 2015Debt$375K▮
Aug 2014Seed Round$2.4M▮
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Immusoft valuation

Immusoft was valued at $65.2 million at its later-stage round in Mar 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Immusoft raised?

Immusoft has raised $54.8 million across 6 recorded rounds since 2014. The largest was a $4.6 million seed round in May 2024.

Immusoft has filed 8 Form Ds with the SEC since 2014, most recently in Jun 2024 ($4.6 million sold to 25 investors).

How Immusoft's valuation is determined

Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.

For Immusoft, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by its last priced round. Question about this number? Full methodology →

Frequently asked about Immusoft

What is Immusoft worth?
Immusoft is valued at $65.2M as of Oct 2026. Valued at $65.2M at its later-stage round, Mar 2025. Nothing has traded since.
How much has Immusoft raised?
Immusoft has raised $54.8M in total funding across 6 recorded rounds.
When did Immusoft last raise?
Immusoft last raised in May 2024 (Seed Round), raising $4.6M.