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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
Valuation & funding
Immusoft funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| GRANT✓Other financing | Jan 2023 | $8M | — | California Institute for Regenerative Medicine | ↗ |
| GRANTOther financing | Nov 2021 | $4M | — | California Institute for Regenerative Medicine | — |
| GRANT✓Other financing | Sep 2020 | $470K | — | National Institutes of Health | — |
| LATE VC✓Equity / VC | Sep 2020 | $4.5M | $100M | Ikarian Capital LLC · Mesa Verde Venture Partners · Breakout Ventures | — |
| SERIES B✓Equity / VC | Jan 2019 | $20M | $80M | RBV Capital · DEFTA Partners · Breakout Ventures · Mesa Verde Venture Partners | ↗ |
| GRANT✓Other financing | Sep 2018 | National Institute of General Medical Sciences | — | ||
| SERIES B✓Equity / VC | Jan 2018 | Peter Thiel · Tim Draper · Technium Partners · 600 Mile Challenge Fund | — | ||
| SERIES A✓Equity / VC | Nov 2016 | Founders Fund · Technium Partners · Propel(x) · Westcott LLC | — | ||
| DEBT✓Debt | Aug 2015 | Westcott LLC | — | ||
| SERIES A✓Equity / VC | Aug 2014 | Breakout Ventures · Founders Fund | — |
Financials
Workforce over time
Available workforce history. Financial fields without reported data are omitted.
| Year | Employees |
|---|---|
| 2026 | 22 |
| 2025 | 23 |
| 2024 | 23 |
| 2023 | 20 |
| 2022 | 19 |
| 2021 | 16 |
| 2020 | 15 |
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.
Comparisons
Immusoft compared with similar companies
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Capital deployed
Immusoft investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Talent graph
Immusoft's talent
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.







Global footprint
Where Immusoft has talent and traffic
team presence
In the news
Latest news about Immusoft
Recent press, funding announcements, and product moves mentioning Immusoft — open to read from the original sources.
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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