| Website | perseusllc.com |
| Phone | 212-651-6400 |
| Employees | |
| Founded | 1995 |
Perseus, L.L.C. is a merchant bank and private equity fund management company headquartered in Washington, D.C., with an office in New York and an affiliate office in Munich. Since its inception in 1995, Perseus has invested in numerous buyout and growth equity transactions in the United States, Canada, and Western Europe. Perseus manages seven investment funds with capital commitments totaling approximately $2.0 billion. In addition, Perseus co-manages a $449 million fund that invests exclusively in life sciences companies.
| Company | Date | Round | Size | Participants |
| CeNeRx BioPharma | 8/10 | Series C | $13M | 3 |
| Metamark Genetics | 8/10 | Series B | $22M | 1 |
| Cymbet | 1/10 | Series C | $31M | 6 |
| Lumexis | 11/09 | Venture Round | $15M | 3 |
| NanoBio | 7/09 | Series B | $22M | 1 |
| SoftSwitching Technologies | 9/08 | Series E | $2M | 5 |
| Bioenvision | 4/07 | Venture Round | $7.41M | 3 |
| MAP Pharmaceuticals | 3/07 | Series D | $50M | 6 |
| Serveron | 3/07 | Venture Round | $5M | 7 |
| Serveron | 1/06 | Series F | $3M | 7 |
| Iridian Technologies | 4/05 | Series C | $5M | 3 |