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Immusoft

Biotech & Life Sciences · Seattle, United States · Founded 2009

Immusoft, a biotechnology company, commercializes technologies that program the human immune system by modifying the DNA in related cells MoreLess

Immusoft Corporation, based in Seattle, is a pioneering cell therapy company focused on developing a novel approach to sustained delivery of protein therapeutics using the body's own cells. The company operates in the biotechnology and healthcare market, primarily serving patients with chronic diseases that require long-term treatment solutions. Immusoft's core technology, known as Immune System Programming (ISP), involves collecting a type of immune cell called B cells, programming them to produce specific therapeutic proteins, and then reintroducing these cells into the patient's body. These programmed B cells transform into plasma cells, which act as biofactories to produce and secrete therapeutic proteins continuously over extended periods. This innovative approach aims to provide a more effective and sustained treatment option compared to traditional therapies. Immusoft generates revenue through partnerships, licensing agreements, and potentially future commercialization of its proprietary therapies. The company targets a niche market with high unmet medical needs, positioning itself as a leader in the cell therapy space.

Keywords: cell therapy, B cells, protein therapeutics, chronic diseases, biofactory, plasma cells, immune system programming, biotechnology, healthcare, sustained delivery.

Company overview

Immusoft company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2009
Headquarters
Seattle, United States
Employees
22
Open positions
None listed
Dealroom signal
59.6
Investment activity
1 companies · latest Mar 2016
Capital deployed
Preferred round
ACQUISITION
client focusb2csub industryBioTechnologyindustryHealthsectorBiotechnologysectorDNAsectorGenetics and genomicssectorSpinoutsectorGenome EngineeringsectorBiotech and PharmasectorproteomicssectorDT and LSsectorscience-based

Valuation & funding

Immusoft funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GRANTOther financing Jan 2023 $8M California Institute for Regenerative Medicine
GRANTOther financing Nov 2021 $4M California Institute for Regenerative Medicine
GRANTOther financing Sep 2020 $470K National Institutes of Health
LATE VCEquity / VC Sep 2020 $4.5M $100M Ikarian Capital LLC · Mesa Verde Venture Partners · Breakout Ventures
SERIES BEquity / VC Jan 2019 $20M $80M RBV Capital · DEFTA Partners · Breakout Ventures · Mesa Verde Venture Partners
GRANTOther financing Sep 2018 National Institute of General Medical Sciences
SERIES BEquity / VC Jan 2018 Peter Thiel · Tim Draper · Technium Partners · 600 Mile Challenge Fund
SERIES AEquity / VC Nov 2016 Founders Fund · Technium Partners · Propel(x) · Westcott LLC
DEBTDebt Aug 2015 Westcott LLC
SERIES AEquity / VC Aug 2014 Breakout Ventures · Founders Fund
Showing 10 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 22
2025 23
2024 23
2023 20
2022 19
2021 16
2020 15
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Immusoft website traffic

Latest recorded traffic for Immusoft is 3.1K monthly website visits, up 40.9% over the last three months. Immusoft's team declined 4.3% over the past year.

Latest monthly visits3.1K 3-month web change+40.9% 1-year team growth-4.3%
Monthly website visits102 observations · Apr 2016–Jul 2026
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Comparisons

Immusoft compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Capital deployed

Immusoft investments and acquisitions

Recent portfolio relationships for companies that also act as investors or acquirers.

Talent graph

Immusoft's talent

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Team profiled 10 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

25 investors on Immusoft's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 5 investors entered at this stage
Boston Harbor Angels
The Thiel Foundation
National Institute of General Medical Sciences
National Institutes of Health
California Institute for Regenerative Medicine
Series A 10 investors entered at this stage
Founders Fund
Breakout Ventures
Technium Partners
Propel(x)
600 Mile Challenge Fund
Peter Thiel
Tim Draper
RBV Capital
DEFTA Partners
Mesa Verde Venture Partners
Series B+ 2 investors entered at this stage
Westcott LLC
Ikarian Capital LLC
Other known 8 additional known investors
Caltech, California Institute of Technology
Bios Partners
Breakout Labs
Global Source Ventures
Invariantes Fund
Julia (Thies) Moore
Small Business Innovation Research
William Hyun

Global footprint

Where Immusoft has talent and traffic

Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

In the news

Latest news about Immusoft

Recent press, funding announcements, and product moves mentioning Immusoft — open to read from the original sources.

See all news

Market sentiment

What the market is saying about Immusoft

An AI-synthesized read of the highest-engagement posts about Immusoft on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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