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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

Immusoft key facts

as of Oct 2026
  • Developer of novel therapies designed for the treatment of rare diseases.
  • Immusoft is valued at approximately $65.2M as of Oct 2026, set at its later-stage round, Mar 2025; nothing has traded since, per PrivateMarketView’s mark.
  • It has raised $54.8M across 6 recorded rounds; the latest was Seed Round ($4.6M) in May 2024.
  • Notable investors include Founders Fund, Alexandria Venture Investments, Highlight Capital, Invariantes Fund, GRIDS Capital — 29 tracked in total.
  • Immusoft has filed 8 Form Ds with the SEC since 2014, most recently Jun 2024 ($4.6M sold to 25 investors).
  • Status: Privately Held (backing).
PrivateMarketView mark
LOW confidence
$65.2M

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

set by its last priced roundas of Oct 2026question about this number?
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Immusoft funding rounds

6 rounds
May 2024Seed Round$4.6MSEC filing▮
Sep 2020Early Stage VC$10.3MSEC filing▮
Jan 2018Early Stage VC$20.2MSEC filing▮
Oct 2016Seed Round$2.7MSEC filing▮
Aug 2015Debt$375KSEC filing▮
Full funding history →

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).

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.

Who runs Immusoft

1 person is listed on the Immusoft team: 1 board member. 1 of them have a verified direct contact on file.

About Immusoft

Developer of novel therapies designed for the treatment of rare diseases. The company develops autologous cell therapies based on its immune system programming technology that entails collecting a type of the patient's immune cells, called B cells which can turn into bio factories each of which manufactures and secretes various antibodies, enabling the medical community to combat infectious diseases.

Sector
Healthcare
HQ
Seattle, WA, United States
Founded
2009
Employees
22
Ownership
Privately Held (backing)

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