Life Science Angels
San Francisco Bay Area, United StatesFounded 2005
Life Science Angels (LSA) is a not-for-profit angel investment group founded in 2005 by Allan May, focused exclusively on early-stage life science companies including biotech, medical devices, diagnostics, and digital health. With 130-150 accredited investor members, LSA has invested in over 100 companies and deployed more than $60 million.
45% of their portfolio is in Biotech & Life Sciences. They made 1 investments in the last 12 months. Their most common stage is series-a (64% of deals). Average disclosed round size is $9.5M (across 10 rounds with reported amounts).
Portfolio
10
Fund Size
—
Top Stage
Series A
Last 12 Mo
1
Team
LL
Lucy Lu
Board Member
PT
Paola Torre
Board Member
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
11 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 ATDev | Seed | $3M | Oct 2025 |
 Neurava | Seed | $2.3M | Apr 2024 |
 InvVax | Unknown | $124K | Jan 2024 |
 InnoSIGN | Series A | $8M | Jan 2022 |
 Allyx Therapeutics, Inc. | Series A | $7.6M | Jan 2021 |
 Virion Therapeutics | Series A | $5M | Sep 2018 |
| NNuMedii | Series A | $3.5M | Jan 2013 |
 Zogenix, Inc. | Series A | $60M | Aug 2006 |
 Comentis | Series A | — | Jan 2005 |
 Inhalon | Seed | $500K | — |
| Inhalon | Series A | $5M | — |
Top Co-Investors
Sand Hill Angels3 shared
New Leaf Venture Partners1 shared
Elevate Ventures1 shared
UCB Ventures1 shared
Riverfront Ventures1 shared
UpHonest Capital1 shared
Casdin Capital1 shared
Thuja Capital1 shared
TCA Venture Group1 shared
Bristol Myers Squibb1 shared
Connecticut Innovations1 shared
Spring Mountain Capital1 shared
Keiretsu Forum1 shared
Alliance of Angels1 shared
Domain Associates1 shared
Medicxi1 shared
Stanford's StartX Fund1 shared
Lightspeed Venture Partners1 shared
Last updated: 8 September 2026