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.
They made 2 investments in the last 12 months. Their most common stage is seed (42% of deals). Average disclosed round size is $66.6M (across 49 rounds with reported amounts).
Portfolio
41
Fund Size
$90M
Top Stage
Seed
Last 12 Mo
5
Team
Prof. Sir Tony Kouzarides
Venture Partner / Resident Knight
Kasia Bojanowska
Designer
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
52 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Adaption | Seed | $50M | Feb 2026 |
| Adaption | Seed | $50M | Jan 2026 |
 Merge Labs | Seed | $250M | Jan 2026 |
| AAdaption Labs | Seed | $50M | Jan 2026 |
| OOnePot | Seed | $13M | Nov 2025 |
 BillionToOne | Series D | $130M | Jun 2024 |
 Cosmic Aerospace | Seed | $4.5M | Feb 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 |
 Solugen | Series D | $200M | Nov 2022 |
 Harmonic Discovery | Seed | $8M | Sep 2022 |
| AArpeggio Biosciences | Series A | $17M | Sep 2022 |
 Zero Acre Farms | Series A | $37M | Feb 2022 |
 Healthleap | Pre-Seed | $1.1M | Jan 2022 |
 LatchBio | Series A | $28M | Jan 2022 |
 Arpeggio | Series A | $20M | Jan 2022 |
 HealthLeap | Pre-Seed | $1.1M | Jan 2022 |
 Nabla Bio | Seed | $11M | Dec 2021 |
| QQOA | Seed | $6M | Oct 2021 |
| Journey Clinical | Seed | $3M | Sep 2021 |
 Solugen | Unknown | $357M | Sep 2021 |
Page 1 of 3
Top Co-Investors
Y Combinator14 shared
Lowercarbon Capital9 shared
Baillie Gifford7 shared
Founders Fund7 shared
Refactor Capital6 shared
Khosla Ventures6 shared
Collaborative Fund4 shared
Union Square Ventures4 shared
FootPrint Coalition4 shared
Illusian4 shared
Lux Capital3 shared
Carbon Direct Capital3 shared
FundersClub3 shared
Emergence Capital3 shared
Alpha Intelligence Capital3 shared
Mozilla Ventures3 shared
Threshold Ventures3 shared
Neo3 shared
E14 Fund3 shared
Last updated: 8 September 2026