Capstan Therapeutics
AcquiredIn vivo engineering of cells through targeted lipid nanoparticles.
San Diego, United States · Founded 2021 · $340.0M raised
- Headquarters
- San Diego
- Employees
- 51–200
- Founded
- 2021
- Business Model
- B2B
- Website
- abbvie.com
- Total Funding
- $340.0M
- Last Round
- $175.0M Series BMar 2024
- Rounds
- 3
- Acquired by
- AbbVieJun 2025 · $2.1B
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Capstan Therapeutics is a San Diego-based biotechnology company founded in 2021 as a Penn spinout. The company developed in vivo CAR-T cell therapies using targeted lipid nanoparticles (CellSeeker™ LNPs) to engineer T cells inside the body for treating autoimmune diseases and cancer. Capstan was acquired by AbbVie in 2025 for $2.1 billion upfront.
Summary
Capstan Therapeutics is a Biotech company based in San Diego, United States, founded in 2021. It has raised $340.0M in total across 3 rounds, most recently a $175.0M Series B round in Mar 2024. Investors include AbbVie Ventures, Pfizer Ventures and Novartis Venture Fund.
Funding & Exit History
Jun 2025
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Funding: Seed through Series B. Amounts, valuations, and investors where available.
Investors
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