Atlas Venture is an early-stage venture capital firm that exclusively focuses on creating and investing in innovative biotechnology and pharmaceutical startups. Their strategy involves a "venture creation" approach, working closely with entrepreneurs and scientists to translate groundbreaking science into new medicines.
48% of their portfolio is in Biotech & Life Sciences. Deal activity increased 67% year-over-year (5 deals in the last 12 months). Average disclosed round size is $62.5M (across 60 rounds with reported amounts).
Portfolio
63
Fund Size
$2.7B
Top Stage
Series A
Last 12 Mo
5
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
63 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Kinaset Therapeutics | Series B | $103M | Jan 2026 |
 Triana Biomedicines | Series B | $120M | Dec 2025 |
| LLifordi Immunotherapeutics | Unknown | — | Nov 2025 |
| AAAVantgarde Bio | Series B | $141M | Nov 2025 |
 Vima Therapeutics | Series A | $60M | May 2025 |
 Triveni Bio Inc. | Series B | $115M | Oct 2024 |
 Kailera Therapeutics | Series A | $400M | Oct 2024 |
 Pheon Therapeutics | Series B | $120M | May 2024 |
 Diagonal Therapeutics | Series A | $128M | Apr 2024 |
 Comanche Biopharma Corp. | Series B | $75M | Jan 2024 |
 Remix Therapeutics | Series C | $60M | Jan 2024 |
| Triveni Bio Inc. | Series A | $92M | Oct 2023 |
| AAiolos Bio | Series A | $245M | Oct 2023 |
| AAi Build | Series A | $8.5M | Oct 2023 |
| Kailera Therapeutics | Unknown | $400M | Oct 2023 |
 Jenfi | Series A | $6.6M | May 2023 |
 Chroma Medicine | Series B | $135M | Mar 2023 |
| PPHINXT Robotics | Pre-Seed | $600K | Jan 2023 |
| Pheon Therapeutics | Series A | $68M | Sep 2022 |
 Sionna Therapeutics | Series B | $111M | Apr 2022 |
 Arkuda Therapeutics | Series B | $64M | Feb 2022 |
 GoComet | Series A | $7M | Feb 2022 |
 Curie Therapeutics Inc. | Series A | $75M | Dec 2021 |
 HotSpot Therapeutics, Inc. | Series C | $100M | Nov 2021 |
 Obsidian Therapeutics | Series B | $115M | Sep 2021 |
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Top Co-Investors
RA Capital Management10 shared
Cormorant Asset Management5 shared
Alexandria Venture Investments5 shared
Sofinnova Partners5 shared
ARCH Venture Partners4 shared
Forbion4 shared
Willett Advisors4 shared
Casdin Capital4 shared
OrbiMed4 shared
GV (Google Ventures)4 shared
Surveyor Capital4 shared
500 Startups4 shared
Viking Global Investors3 shared
Invus3 shared
Lightspeed Venture Partners3 shared
Pivotal bioVenture Partners3 shared
Pfizer Ventures3 shared
Crosslink Capital3 shared
SV Angel3 shared
Longworth Venture Partners3 shared
Last updated: 24 April 2026