Climate & EnergyBiotech & Life SciencesHealthcareDefense & SpaceFood & AgricultureRobotics & Automation
Fifty Years is a San Francisco-based pre-seed and seed venture capital firm that backs founders using deep technology to solve the world's biggest problems, including climate change, disease, malnutrition, and connectivity. Founded in 2015 by Seth Bannon and Ela Madej, the firm raised its third fund of $90 million in 2021 from dozens of unicorn founders.
Deal activity increased 50% year-over-year (3 deals in the last 12 months). Average disclosed round size is $58.1M (across 79 rounds with reported amounts).
Portfolio
57
Fund Size
$90M
Top Stage
Seed
Last 12 Mo
3
Team
Prof. Sir Tony Kouzarides
Venture Partner / Resident Knight
Kasia Bojanowska
Designer
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
87 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Adaption | Seed | $50M | Feb 2026 |
| Adaption | Seed | $50M | Jan 2026 |
 Merge Labs | Seed | $250M | Jan 2026 |
| OOnePot | Seed | $13M | Nov 2025 |
 Gridware | Series B | $55M | Nov 2025 |
 Aalo Atomics | Series B | $100M | Aug 2025 |
 Aalo | Series B | $100M | Aug 2025 |
 BillionToOne | Series D | $130M | Jun 2024 |
 Cosmic Aerospace | Seed | $4.5M | Feb 2024 |
 Gordian Biotechnology | Series C | $60M | Jan 2024 |
| Gridware | Seed | $10.5M | Jun 2023 |
 Tangible | Seed | $3M | May 2023 |
 Noya | Series A | $11M | Apr 2023 |
 Journey Clinical | Series A | — | Jan 2023 |
 Noya | Series A | $11M | Jan 2023 |
| TTangible Materia | Seed | $3M | Jan 2023 |
| Aalo | Seed | $6.3M | Jan 2023 |
| Aalo Atomics | Seed | — | Jan 2023 |
 Rebellyous | Series B | $9.5M | Jan 2023 |
 Solugen | Series D | $200M | Nov 2022 |
 Harmonic Discovery | Seed | $8M | Sep 2022 |
| AArpeggio Biosciences | Series A | $17M | Sep 2022 |
 Memphis Meats | Growth | $400M | Apr 2022 |
 Zero Acre Farms | Series A | $37M | Feb 2022 |
 Zero Acre Farms | Series A | $37M | Feb 2022 |
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Top Co-Investors
Y Combinator33 shared
Lowercarbon Capital13 shared
Temasek Holdings (Private) Limited12 shared
Baillie Gifford10 shared
Founders Fund10 shared
Refactor Capital10 shared
SOSV7 shared
Khosla Ventures7 shared
Gaingels6 shared
Lux Capital5 shared
Harpoon Ventures5 shared
New Crop Capital5 shared
BoxGroup5 shared
KBW Ventures5 shared
Liquid 2 Ventures5 shared
First Round Capital5 shared
True Ventures4 shared
Collaborative Fund4 shared
Union Square Ventures4 shared
Pioneer Fund4 shared
Last updated: 20 October 2026