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.
48% of their portfolio is in Biotech & Life Sciences. Their most common stage is series-a (48% of deals). Average disclosed round size is $9.7M (across 21 rounds with reported amounts).
Portfolio
24
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
29 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 ATDev | Seed | $3M | Oct 2025 |
 Nervonik | Series A | $13M | Mar 2025 |
| Nervonik | Series A | $13M | Jan 2025 |
 Neurava | Seed | $2.3M | Apr 2024 |
 InvVax | Unknown | $124K | Jan 2024 |
 InnoSIGN | Series A | $8M | Jan 2022 |
 Allyx Therapeutics | Series A | $7.6M | Jan 2021 |
 PharmEnable | Seed | — | Jan 2020 |
 Virion Therapeutics | Series A | $5M | Sep 2018 |
 Amplyx Pharmaceuticals, Inc. | Series A | $49.2M | Feb 2016 |
| NNuMedii | Series A | $3.5M | Jun 2013 |
| NNuMedii | Series A | $3.5M | Jan 2013 |
| CCatheter Connections Inc. | Seed | $1.3M | Sep 2012 |
| GGemmus Pharma | Series B | $3.3M | Jun 2012 |
| AAllylix | Series C | — | Apr 2010 |
 arGEN-X | Series A | — | Dec 2009 |
| SSantaris Pharma | Series C | — | Dec 2007 |
| SSyntaxin | Series B | — | Oct 2007 |
 Zogenix, Inc. | Series A | $60M | Aug 2006 |
| SSantaris Pharma | Unknown | — | Mar 2006 |
 Comentis | Series A | — | Jan 2005 |
 Inhalon | Seed | $500K | — |
| Inhalon | Series A | $5M | — |
| IInnoSIGN | Series A | $8M | — |
| RRenata | Series B | $12M | — |
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Top Co-Investors
TCA Venture Group7 shared
Sand Hill Angels4 shared
Stanford's StartX Fund3 shared
Casdin Capital2 shared
Thuja Capital2 shared
Aphelion Capital2 shared
Peterson Ventures2 shared
Lightspeed Venture Partners2 shared
New Enterprise Associates2 shared
ShangBay Capital2 shared
U.S. Venture Partners2 shared
Joyance Partners2 shared
Correlation Ventures2 shared
Foothill Ventures2 shared
Seraph Group2 shared
Omega Funds2 shared
Forbion2 shared
Seventure Partners2 shared
Novo Capital2 shared
EQT Life Sciences2 shared
Last updated: 20 October 2026