Ra Capital Management, LP
SEC-registered investment adviser.
- Website
- HTTP://WWW.RACAP.COM
- HQ
- MA
Ra Capital Management, LP founds, funds, and scales companies across healthcare and planetary health. Its leadership includes Managing Partners Peter Kolchinsky, Rajeev Shah, and Kyle Teamey, along with several partners and principals. Portfolio companies include Abcuro, which develops KLRG1-targeting therapies, Koloma, which produces low-carbon geologic hydrogen, and Avalanche, which develops compact fusion machines for clean power. Aliada Therapeutics was acquired by AbbVie, and Cidara Therapeutics was acquired by Merck.
01 · Says / Does
| Tag | Says | Does | Historically (to 2020) |
|---|---|---|---|
| Stages | Seed, Series A, Series B, Growth | Not enough dated deals | Growth, Series B, Series A |
| Sectors | Biotech, Energy, Agtech, Manufacturing | Not enough dated deals | Biotech, Healthtech, Medical devices |
| Regions | Global | Not enough dated deals | CA, MA |
Says: what the firm's funds state. Does: from 1 dated deal in the last 24 months.
Historical focus (through 2020), derived from historical deal data.
| Year | Deals | Top sectors |
|---|---|---|
| 2006 | 1 | Biotech |
| 2010 | 1 | Biotech, Healthtech, Medical devices |
| 2011 | 1 | Biotech, Healthtech, Medical devices |
| 2012 | 3 | Biotech, Healthtech, Medical devices |
| 2013 | 6 | Biotech, Healthtech, Advanced materials |
| 2014 | 14 | Biotech, Healthtech, Medical devices |
| 2015 | 31 | Biotech, Healthtech, Medical devices |
| 2016 | 9 | Healthtech, Biotech, Medical devices |
| 2017 | 13 | Biotech, Healthtech, Medical devices |
| 2018 | 20 | Biotech, Healthtech, Medical devices |
| 2019 | 17 | Biotech, Healthtech, Medical devices |
| 2020 | 16 | Biotech, Healthtech, Life sciences and research tools |
Stage mix over time
- Pre-seed
- Seed
- Series A
- Series B
- Growth
| Year | Pre-seed | Seed | Series A | Series B | Growth |
|---|---|---|---|---|---|
| 2010 | 0 | 0 | 0 | 0 | 1 |
| 2011 | 0 | 0 | 0 | 0 | 1 |
| 2012 | 0 | 0 | 0 | 1 | 1 |
| 2013 | 0 | 0 | 0 | 1 | 2 |
| 2014 | 0 | 0 | 0 | 1 | 10 |
| 2015 | 0 | 0 | 3 | 11 | 8 |
| 2016 | 0 | 1 | 0 | 2 | 4 |
| 2017 | 0 | 0 | 1 | 4 | 4 |
| 2018 | 0 | 0 | 5 | 8 | 5 |
| 2019 | 0 | 0 | 3 | 8 | 4 |
| 2020 | 0 | 0 | 4 | 4 | 6 |
| 2021 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 0 | 0 | 0 | 0 | 0 |
| 2023 | 0 | 0 | 0 | 0 | 0 |
| 2024 | 0 | 0 | 0 | 0 | 0 |
| 2025 | 0 | 0 | 0 | 0 | 0 |
| 2026 | 0 | 0 | 0 | 0 | 0 |
02 · Fund history
| Fund | Year | Size | Status |
|---|---|---|---|
| RA Capital Planetary Health Fund, L.P. RA Capital founds, funds, and scales companies across healthcare and planetary health, from seed to IPO. In planetary health it backs companies with near-term paths to market that commercialize scalable, profitable solutions that reduce emissions, increase resource availability, or restore environmental quality. Inferred from the firm's website | 2023 | $122.2M (Form D) | Open, writing first checks |
| RA Capital Planetary Health International Fund, L.P. RA Capital founds, funds, and scales companies across healthcare and planetary health, from seed to IPO. In planetary health it backs companies with near-term paths to market that commercialize scalable, profitable solutions that reduce emissions, increase resource availability, or restore environmental quality. Inferred from the firm's website | 2023 | $30.25M to $62.25M (Form D and SEC adviser filing) | Open, writing first checks |
| RA Capital Nexus Fund III, L.P. | 2021 | $880.99M to $1048.72M (Form D and SEC adviser filing) | Follow-ons only |
| RA Capital Nexus International Fund III, L.P. | 2021 | $880.99M to $1048.72M (Form D and SEC adviser filing) | Follow-ons only |
03 · People across funds
- Brigid O'Brien
RA Capital Planetary Health Fund, L.P. (Named on Form D); RA Capital Planetary Health International Fund, L.P. (Named on Form D)
- Kyle Teamey, Managing Partner
RA Capital Planetary Health Fund, L.P. (Named on Form D); RA Capital Planetary Health International Fund, L.P. (Named on Form D); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Peter Kolchinsky, Dr. Kolchinsky is a Manager of the General Partner of the Issuer
RA Capital Planetary Health Fund, L.P. (Named on Form D); RA Capital Planetary Health International Fund, L.P. (Named on Form D); RA Capital Nexus Fund III, L.P. (Named on Form D); RA Capital Nexus International Fund III, L.P. (Named on Form D)
- Rajeev Shah, Managing Partner
RA Capital Planetary Health Fund, L.P. (Named on Form D); RA Capital Planetary Health International Fund, L.P. (Named on Form D); RA Capital Nexus Fund III, L.P. (Named on Form D); RA Capital Nexus International Fund III, L.P. (Named on Form D)
- Anurag Kondapalli, Principal
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Derek DiRocco, PhD, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Jake Simson, PhD, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Jeremy Lack, DPhil, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Josh Resnick, MD, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Kathryn Meng, PhD, Principal
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Laura Stoppel, PhD, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Matt Hammond, PhD, MBA, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Peter Kolchinsky, PhD, Managing Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
- Zach Scheiner, PhD, Partner
RA Capital Planetary Health Fund, L.P. (Team); RA Capital Planetary Health International Fund, L.P. (Team); RA Capital Nexus Fund III, L.P. (Team); RA Capital Nexus International Fund III, L.P. (Team)
04 · Recent deals
- Sep 29, 2025ARS Pharmaceuticals, Inc. (ARS Pharma)Stage unknownFirmsource
05 · Latest from the firm
- InvestmentRA Capital Management Funds Expansion of ARS Pharma Commercial…Sep 30, 2025
- New fundRA Capital Management Announces $120 Million Planetary Health FundJul 22, 2025
06 · Sources
- HTTP://WWW.RACAP.COM
- https://www.racap.com/contact
- https://www.racap.com/portfolio
- https://www.racap.com/news-events/ra-capital-management-funds-expansion-of-ars-pharma-commercial-activity-expands-portfolio-of-financing-solutions-for-innovative-healthcare-companies
- https://www.racap.com/team
- https://www.racap.com/fund-your-company
- https://www.racap.com/
- https://www.racap.com/news-events/ra-capital-management-announces-120-million-planetary-health-fund
- https://www.racap.com/portfolio?domain=planetary-health
Fund dates and sizes are from SEC Form D filings.
Last verified: Oct 28, 2026