
Altitude Life Science Ventures
Kirkland, Washington, United StatesFounded 2006
Altitude Life Science Ventures is a venture capital firm based in Kirkland, WA, that invests in early-stage life science companies. Its investment scope includes prescription drugs and any commercial application of proprietary technology originating from a key advance in biology or chemistry, with additional focus on therapeutics, diagnostics, gene editing, medical devices, and sequencing-related technologies.
66% of their portfolio is in Biotech & Life Sciences. Average disclosed round size is $122.9M (across 37 rounds with reported amounts).
Portfolio
28
Fund Size
$75M
Top Stage
Series A
Last 12 Mo
2
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
41 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| Series A | $350M | Oct 2025 | |
| Series B | $54.4M | Oct 2025 | |
| LLILA | Seed | $200M | Mar 2025 |
| Seed | $200M | Mar 2025 | |
| Series A | $71M | Jun 2024 | |
| Series A | $71M | Jun 2024 | |
| Series A | $25M | Jun 2023 | |
| Series A | $500M | Oct 2022 | |
| Series A | $68M | Apr 2022 | |
| Series A | $55M | Oct 2021 | |
| Series A | — | Oct 2021 | |
| Series B | $117M | Jul 2021 | |
| Series B | $117M | Jul 2021 | |
| Series B | $230M | Jan 2021 | |
| Series A | — | Jan 2021 | |
| Series C | $60M | Jan 2020 | |
| Unknown | $275M | Oct 2019 | |
| Series C | $104M | Jun 2019 | |
| Series B | $82M | Apr 2019 | |
| Unknown | $135M | Mar 2019 | |
| Series A | $275M | Jan 2019 | |
| VVividion | Series B | $82M | Jan 2019 |
| Series B | $60M | Jul 2018 | |
| Series C | $55M | Mar 2018 | |
| Series B | $60M | Jan 2018 |
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Top Co-Investors
ARCH Venture Partners22 shared
Alexandria Venture Investments12 shared
Flagship Pioneering8 shared
The Invus Group, LLC7 shared
F-Prime Capital6 shared
Menlo Ventures5 shared
Catalio Capital Management5 shared
Venrock4 shared
Biomatics Capital4 shared
The Column Group4 shared
March Capital4 shared
Abu Dhabi Investment Authority4 shared
Omega Funds4 shared
Mubadala Ventures4 shared
T. Rowe Price4 shared
Surveyor Capital4 shared
Polaris Partners4 shared
DCVC3 shared
Domain Associates3 shared
SR One3 shared
Last updated: 20 October 2026