# Top 50 CleanTech Angel Investors in United States in June 2026

| Investor | Relevant Deals | Geography | Stage | Focus |
| --- | --- | --- | --- | --- |
| David E. Weekly | 3 | United States, Israel | Seed, Angel, Pre-Seed | Drones, Robotics, Aerospace |
| Kathy Fields | 2 | United States | Series A, Seed, Series B | Water, CleanTech, Health Care |
| Howard Wenger | 2 | United States, Australia | Seed, Pre-Seed, Series A | Software, Solar, Energy |
| Marc Tarpenning | 2 | United States, France, Denmark | Series A, Seed, Series D | Renewable Energy, Drones, Robotics |
| Mark Cuban | 2 | United States, United Kingdom, Canada | Seed, Series A | Software, Artificial Intelligence, Blockchain |
| Elon Musk | 2 | United States, Japan | Series A, Series B, Pre-Seed | FinTech, Apps, Software |
| Luigi Bajetti | 2 | United States, Italy, Luxembourg | Pre-Seed, Seed, Series A | Software, Information Technology, Apps |
| Eugene Goldberg | 2 | United States | Angel | CleanTech, Clean Energy, Renewable Energy |
| Luke Kupersmith | 2 | United States | Angel | CleanTech, Clean Energy, Renewable Energy |
| Justin Hamilton | 2 | United States, India, Canada | Seed, Pre-Seed, Series A | Aerospace, CleanTech, Environmental Engineering |
| Edward Kim | 2 | United States | Angel | CleanTech, Clean Energy, Renewable Energy |
| Bill Gates | 2 | United States, Brazil, Canada | Series A, Series B, Series C | Energy, Biotechnology, Manufacturing |
| Rand Hindi | 2 | France, United States, Germany | Seed, Pre-Seed | Software, Cryptocurrency, Information Technology |
| Chris Sang | 2 | United States, Australia, India | Seed, Pre-Seed, Series A | Software, E-Commerce, SaaS |
| Ashley Mayer | 2 | United States, Germany | Seed, Series A, Pre-Seed | Wellness, Health Care, Drones |
| Warren Buffett | 2 | United States, Ghana, Japan | Seed, Pre-Seed, Post-IPO Equity | Health Care, Retail, Medical |
| Jeff Bezos | 2 | United States, United Kingdom, India | Grant, Series B, Seed | Software, Non Profit, Association |
| Rex Burgdorfer | 2 | United States, United Kingdom | Seed, Series A | Fashion, Real Estate, Software |
| Elizabeth Cutler | 2 | United States | Seed, Series A, Pre-Seed | Women's, E-Commerce, Health Care |
| Andy Smith | 1 | United States | Seed, Series A | Retail, Computer, Shopping |
| Greg Richards | 1 | United States | Pre-Seed, Private Equity | Fruit, Farming, FinTech |
| John Chory | 1 | United States | Series A | Big Data, Internet, Software |
| Alexandra Stanton | 1 | United States | Pre-Seed | Fashion, CleanTech, E-Commerce Platforms |
| Kaan Armagan | 1 | United States | Pre-Seed | Robotics, Software, CleanTech |
| Ernie Chow | 1 | United States | Pre-Seed | FinTech, Finance, CleanTech |
| Matt Kraning | 1 | United States | Seed, Pre-Seed, Series A | Artificial Intelligence, Software, Machine Learning |
| Will Smith | 1 | United States, United Kingdom, Japan | Series A, Seed, Series C | Financial Services, FinTech, Software |
| Simon Lancaster | 1 | United States | Seed, Angel, Pre-Seed | SaaS, Hardware, Wireless |
| Jeff Immelt | 1 | United States, Saudi Arabia | Series A, Seed, Series B | Software, Manufacturing, Information Technology |
| David Marquardt | 1 | United States, Canada | Series A, Series B, Series C | DevOps, Health Care, Cloud Data Services |
| Preston Schell | 1 | United States | Seed | CleanTech |
| Terrence "Pusha T" Thornton | 1 | United States | Seed, Series A | Music, Film, News |
| Dwayne Douglas Johnson | 1 | United States | Pre-Seed | Sports, Farming, CleanTech |
| Jason Haider | 1 | United States | Series A | Energy, CleanTech, Industrial |
| Aviram Jenik | 1 | South Korea, United States, Israel | Angel, Seed, Pre-Seed | Software, Cyber Security, Machine Learning |
| Summer Watson | 1 | United States | Series A | CleanTech, GreenTech, Automotive |
| Sunmeet Jolly | 1 | United States, Israel | Seed, Series A, Equity Crowdfunding | Software, Internet, Artificial Intelligence |
| Mark Vadon | 1 | United States | Series A, Seed, Series C | E-Commerce, Retail, Health Care |
| Nitesh Banta | 1 | United States, Canada, India | Seed, Series A, Pre-Seed | Software, Artificial Intelligence, Information Technology |
| Vernon Davis | 1 | United States | Seed, Series B | Food and Beverage, Sustainability, Coffee |
| Bryan Hassin | 1 | United States | Seed | Energy, Shipping, CleanTech |
| Nicolaj Reffstrup | 1 | Denmark, United States, United Kingdom | Seed, Pre-Seed | Information Technology, E-Commerce, Fashion |
| Kim Kardashian | 1 | United States | Seed, Pre-Seed, Series A | Farming, Medical, Delivery |
| Ivanka Trump | 1 | United States, United Arab Emirates | Seed, Pre-Seed, Series A | Education, Farming, CleanTech |
| Mark Heising | 1 | United States | Series A, Series B, Series C | Electronics, Energy, Chemical |
| Ashoke Bose | 1 | United States | Seed | AgTech, CleanTech, Smart Home |
| Dave Peacock | 1 | United States | Seed, Series C | Coffee, Legal, Mobile |
| Mohit Goel | 1 | India, United States | Seed, Angel, Series A | Health Care, Internet, Retail |
| Tim Schumacher | 1 | Germany, Sweden, United States | Seed, Series A, Pre-Seed | Apps, Information Technology, SaaS |
| Sylvain Theveniaud | 1 | France, United States | Seed, Pre-Seed | AgTech, Finance, Aerospace |

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