Top 50 CleanTech Angel Investors in United States in May 2025

David E. Weekly is the Head of The Capital One Lab of Capital One. He previously worked at Medcorder as a Founder and CEO. David E. Weekly attended Stanford University.

Dr Rand Hindi is an entrepreneur and investor in 50+ deeptech and web3 companies. He is the CEO at Zama, a homomorphic encryption startup. Rand started coding at the age of 10, created a social network at 14, and started his PhD at 21. He then created Snips, the first private-by-design voice assistant, which was acquired by Sonos. He was electedan MIT TR35, a Forbes “30 under 30”, and was a lecturer at Sciences Po in Paris as well as a member of the French Digital Council.He holds a BSc in Computer Science and a PhD in Bioinformatics from University College London (UCL).

Bill Gates is the Co-chair of Bill and Melinda Gates Foundation. He attended Harvard University.

Elon Musk has co-founded companies such as SpaceX and tunneling startup The Boring Company, and has played served as CEO of Tesla Motors since 2008. He previously worked as a sales manager at many enterprise LLCs. Elon Musk attended the University of Pennsylvania and received bachelor's degrees in economics and physics.

Bill Gates is the Co-chair of Bill and Melinda Gates Foundation. He attended Harvard University.

Venture Capitalist, Managing Partner, Chief Technology Officer

Ashley Mayer is the Operating Council at Mixing Board . Ashley Mayer attended Georgetown University.

Warren Buffet is a businessman and investor. He was born Warren Edward Buffett on August 30,1930, in Omaha, Nebraska. Buffett's father Howard worked as stockbroker and served as U.S. Congressman. His mother, Leila Stahl Buffett, was a homemaker. Buffett was the second of three children and the only boy.Buffett demonstrated a knack forfinancial and business matters early on in his childhood. Friends and acquaintances have said the young boy was a mathematical prodigy, and was able to add large columns of numbers in his head-a talent he still occasionally shows off to friends and business associates.Warren often visited his father's stockbrokerage shop as a child, and chalked in the stock prices on the blackboard in the office. At 11 years old he made his first investment; he bought three shares of Cities Service Preferred at $38 per share. The stock quickly dropped to only $27, but Buffett held on tenaciously until they reached $40. He sold his shares at a small profit, but regretted the decision when Cities Service shot up to nearly $200 a share. He later cited this experience as an early lesson in patience in investing.By the age of 13, Buffett was running his own businesses as a paperboy and selling his own horseracing tip sheet. That same year, he filed his first tax return, claiming his bike as a $35 tax deduction.In 1942, Buffett's father was elected to the U.S. House of Representatives, and his family moved to Fredricksburg, Virginia, to be closer to the congressman's new post. Buffett attended Woodrow Wilson High School in Washington, D.C., where he continued plotting new ways to make money. During his high school tenure, he and a friend purchased a used pinball machine for $25. They installed it in a Washington, D.C. barbershop and, within a few months, the profits of the machine allowed Buffett and his friend to buy other machines. Buffett owned three machines in three different locations before he sold the business to a War Veteran for $1,200.Buffett enrolled at the University of Pennsylvania at the age of 16 to study business. He stayed two years, moved to the University of Nebraska to finish up his degree, and emerged from college at age 20 with nearly $10,000 from his childhood businesses.Buffett attended Columbia University for his advanced degree and in 1956, shortly after graduation, he formed the firm Buffett Partnership in his hometown of Omaha. His investment successes, particularly in buying undervalued companies whose stocks shortly began to rise, made him extremely rich and gained him the sobriquet, "Oracle of Omaha." Other notable career succeses include helping rescue Salomon Brothers from corporate raiders (1987) and taking charge of the New York City house (1992) in the wake of an insider trading scandal.In June 2006, Buffett made an announcement that he would be giving his entire fortune away to charity, committing 85 percent of it to the Bill and Melinda Gates Foundation. This donation became the largest act of charitable giving in United States history.The majority of Buffett's considerable fortune was amassed through Berkshire Hathaway, a company for which he is the largest shareholder and CEO. Ranked as Forbes' wealthiest man in 2008, his net worth is estimated at more than $62 billion.Source:

Edward Kim

Healthcare M&A investment banker at Juniper Advisory. Previously Morgan Stanley & Northwestern University - Kellogg School of Management.

Luigi Bajetti is the managing partner and founder of Lombardstreet Ventures, an early-stage venture capital firm in Menlo Park, California.Luigi is a serial entrepreneur with over 25 years of experience in the tech and internet industries, with a wealth of knowledge and expertise in building and scaling startups.As a full-time investor since2013, he has been leveraging his experience and insights to identify and support the next generation of Silicon Valley founders. With a passion for backing game-changing technologies and a talent for spotting emerging trends, Luigi has a proven track record of success in identifying groundbreaking startups. He has invested almost always at the earliest possible stage of seed in 20+ US startups valued at over $30 billion combined, including 9 that have since become unicorns.

Luke Kupersmith - President & CEO @ Lojistic

Jeffrey Preston Bezos is the Founder of Blue Origin. He previously worked at Cashican People LLC as an Investor. Jeff Bezos attended Princeton University.

Eugene Goldberg

Mark Cuban is the founder of Fireside, Chairman and Founding Partner of AXS TV, and the Owner of Dallas Mavericks. He previously worked at Broadcast.com as a Co-Founder. Mark Cuban attended the Indiana University Bloomington.

Marc Tarpenning is a member of the advisory board at Clearpath Robotics , a manufacturer of unmanned vehicles for industrial research and development applications. He also provides services as an advisor to many other companies. Previously, he was a mentor at Greenstart.Marc is a Venture Partner at Spero Ventures. He was previously anentrepreneur in residence at Mayfield Fund before he joined Greenstart. Prior to that, he co-founded and served as the vice president for engineering at Tesla Motors. He also held executive positions at Packet Design, NuvoMedia, and Gemstar-TV Guide.Tarpenning holds a bachelor’s degree in computer science from the University of California, Berkeley. He lives in San Francisco, California, United States.

Elizabeth Cutler and her partner Julie Rice were determined to find an alternative to the fitness routines that felt like work. In 2006, they created SoulCycle, a workout that combines inspirational coaching with high-energy music and a full body workout on the bike. Today, riders of all ages have responded to the SoulCycle cardio party withover 60,000 people riding at SoulCycle every week. Elizabeth was honored as one of Goldman Sachs' 100 Builders + Innovators in 2013 and 2014, and SoulCycle was voted one of the World's Top 10 Most Innovative Companies in Fitness of 2013 by Fast Company.In 2015, Elizabeth was voted one of Fast Company's Most Creative People in Business.

Kathy Fields is the Co-Founder of Alchemee. Kathy Fields attended Taylor University.

Justin Hamilton is Founder, CEO at Clutterbot.

Peter Yolles

Before founding zulily, Darrell spent almost a decade at Blue Nile, where he was CTO and SVP of Marketing. In 2009, he spent a year at Microsoft leading the BizTalk Server business. Previously, he was at Starwave, a Seattle-based internet company, working on large web properties including ESPN.com and ABCNews.com. He attended the University ofVictoria. When he's not at zulily, Darrell's favorite thing to do is spend time with his young son and daughter, especially on trips to visit family in Canada and Ireland.

Mamoon Hamid is a Partner at Kleiner Perkins. Mamoon previously worked at Slack as a Board Director. He attended Harvard Business School, Stanford University, and Purdue University.

Bhavik Bajaj

Jason Haider: Founder and CEO @ Xenco Medical

Mr. Coors is the founder and CEO of Steelhead Composites LLC. Previously, he was Principal at 9th Street Capital, a venture capital and private equity fund.Mr. Coors spent 6 years as Corporate Economist and Investment Strategist at Qualcomm Incorporated, a Fortune 500 company. Prior to joining Qualcomm, for 5 years he served as the Director ofResearch at Laffer Associates, a money management and institutional economic research and consulting firm. He serves on various corporate Boards and has received numerous awards in industry including being named one of Treasury and Risk magazine‘s ’40 under 40’ Upwardly Mobile Finance Execs in 2007.Mr. Coors is a CFA Charterholder. He holds a Master’s degree in Economics from the University of California, San Diego and a Bachelor’s degree from Colorado State University.

Bootstrapped Debt Financing

Darren leads Google’s Global Customer Acquisition organization. Prior to joining Google, Darren was a Partner at McKinsey & Company.Darren is active in the aviation community. In addition to his Board position with the EAA, he serves as an appointed Board member for the Hiller Aviation Museum in San Carlos, CA. As president of theNorthern California Aerobatic Club, he led the Chapter to becoming the largest IAC chapter in the country.Darren has logged over 6,000 hours of flying time, holds an ATP certificate and is a current CFI, and owns several experimental and certified light aircraft.

Lou Salkind is the Board Member of Schrodinger.Lou Salkind is a Managing Director of D. E. Shaw & Co., L.P. and a member of the Executive Committee of D. E. Shaw & Co., L.P., a global investment firm whose activities center on various aspects of the intersection between technology and finance. Dr. Salkind received his A.B. fromPrinceton University in 1978, where he studied mathematics and physics.His Ph.D. in 1990 from the Courant Institute of Mathematical Sciences at New York University, where he studied computer science and robotics. Dr. Salkind also serves on the board of the Union of Concerned Scientists, a non-profit organization that provides independent scientific analysis on a range of public policy issues.

James is the Co-founder and CEO of thredUP. He attended Boston College, the University of Oxford, Harvard Business School, and Harvard Kennedy School.

Summer Watson is an English operatic soprano.

Will Smith is an actor, producer and musician, two-time Academy Award® nominee four-time Grammy nominee and winner Will Smith has enjoyed a diverse career encompassing films, television and multiplatinum records.Smith’s vast filmography includes transformative portrayals of true-life icons in “Ali,” “The Pursuit of Happyness” and “Concussion.” Hehas headlined an extraordinary list of films, including “Hitch,” “I am Legend,” “I, Robot,” “Independence Day,” “Men in Black I, II, and III” and “Suicide Squad".Currently, Smith can be seen in Walt Disney Pictures “Aladdin” in the iconic role of the Genie. The movie was directed by Guy Ritchie and has made over $1 billion worldwide since its release on May 24, 2019. Smith will next be seen staring in Ang Lee’s action/thriller, “Gemini Man” out this fall. Next year, he’ll grace the screen once again in the beloved franchise, Sony’s “Bad Boys for Life,” premiering around the world in January 2020, in which he will once again reprise his iconic role as Detective Mike Lowrey opposite Martin Lawrence. Smith will next go into production on Warner Brother’s “King Richard” where he will star in the titular role of Richard Williams, the father of renounced tennis stars Venus and Serena Williams.Recently, Smith created the daring Facebook Watch series, “Will Smith’s Bucket List” where he challenges himself to a different item from his bucket list each week, including performing standup comedy with Dave Chappelle, skydiving in Dubai, swimming with sharks, and racing a Formula 1 car in Abu Dhabi. The show was a massive success for the platform. He began his career as a musician selling millions of records worldwide before crossing over into television with the beloved “Fresh Prince of Bel Air.” In 1998 he and partner James Lassiter founded production and management company Overbrook Entertainment, which has produced numerous top film and television projects.In addition to his artistic achievements, Smith is a successful business owner. Along with his wife, Jada Pinkett Smith, he launched a new media venture, Westbrook Inc. This is a cross-platform holding company formed to execute the Smith Family’s global content and commerce business strategy. Westbrook Inc. will encompass subsidiary companies including the existing Overbrook Entertainment, Red Table Talk Enterprises and the recently formed Westbrook Studios, Westbrook Media, and Good Goods, the latter an elevated merchandise business. Additionally he and Jada founded the Will & Jada Smith Family Foundation. WJSFF is a nonprofit, philanthropic organization committed to improving lives and investing in organizations and initiatives that empower traditionally overlooked communities.

Nitesh Banta is the Co-Founder & CEO at B12.

Ex-Apple, ex-Google, ex-BlackBerry product hardware veteran turned parallel-entrepreneur. Currently President and Founder at Omni Venture Labs. #hardware #deeptech #industry4.0 #frontiertech. Prolific inventor with over 50 patents, experienced product and innovation architect. Lover of advanced composites. I am driven to make impossible productspossible, functional and elegant. follow me on LinkedIn for your daily dose of design, manufacturing and engineering innovation.

Vernon Davis - Advisor @ SportsCastr

Jon Oringer is the founder and chairman of Shutterstock.

Global tech startup CXO and board director. Passionate leader who builds and motivates teams to achieve audacious goals with urgency and purpose. Seasoned entrepreneur with USD $350M+ of exits and a track record of driving disruptive tech from launch to rapid scale both in startups and within large organizations. Mentor and force multiplier whosementees have created USD $100B+ enterprise value. Born at 337.10 PPM.

Mark Cuban is the founder of Fireside, Chairman and Founding Partner of AXS TV, and the Owner of Dallas Mavericks. He previously worked at Broadcast.com as a Co-Founder. Mark Cuban attended the Indiana University Bloomington.

Nicolaj Reffstrup is the Founding Partner of Look Up Ventures. He previously worked at Lifestyle and Design Cluster as a Board Member.Nicolaj Reffstrup attended Copenhagen Business School.

Eminem was born Marshall Bruce Mathers III in St. Joseph, Missouri, to Deborah R. (Nelson) and Marshall Bruce Mathers, Jr., who were in a band together, Daddy Warbucks. He is of English, as well as some German, Scottish, and Swiss-German, ancestry. Marshall spent his early childhood being shoved back and forth from Kansas City and Detroit. Hesettled on the Eastside of Detroit when he was 12. Switching schools every two to three months made it difficult to make friends, graduate and to stay out of trouble. Marshall attended Lincoln High School in Warren, Michigan, 1986-1989.Being a rap fan for most of his life, Marshall began rapping at the early age of 4. Rhyming words together, battling schoolmates in the lunchroom brought joy to what was otherwise a painful existence. At the age of 14, he began to get very serious about his rapping but it wasn't until he was 17 that he actually made a name for himself, becoming M&M, which he would later respell as "Eminem". Being rejected by most fellow rappers because of his race, Marshall grew an anger that flows through his music to this day. After failing the 9th grade for three times in a row, he quit school, but has remarked that he does not consider himself stupid and does not advise that people should follow his example. He says that it just wasn't for him. Forcing himself on radio shows, freestyle battles, Marshall threw himself head first into the rap game, where he was swallowed up most of the time. His very first album was titled "Infinite" and, while the album sold less than a thousand copies, it was the gearing up stages for the rapper who became a millionaire. It was then that his daughter, Hailie Jade Scott, was born on December 25th of 1995 with long time girlfriend Kim Scott.Having nothing to lose at all, flat broke and not knowing where he would be living the next week, Marshall set out to rant about life in general, the set quickly caught the ear of hip-hop's difficult-to-please underground. What came out of this was the Slim Shady EP, the early work for the later Dr. Dre revised Slim Shady LP. Down to nearly his last dime, he went into the 1997 Rap Olympics in Los Angeles, basically hoping to win the $1,500 cash prize which he badly needed. After battling for an hour and throwing back every race diss thrown at him, Marshall made it to second place losing in a slip up. Furious that he had lost, Marshall didn't even notice that he had been spotted. In the crowd were a few producers from Interscope, and they were handed a copy of the "Infinite" tape by way of a demo.Dr. Dre got to hear it and eventually tracked him down. The two instantly hit it off, recording four songs in their first six hours of working - three which made it to his first LP. After the album was finished, Dr. Dre asked Marshall to come work with him on his new album. He helped produce several tracks and was on the best songs of the album. Now officially making it, Marshall and Dre set to make his second LP. The album became the Marshall Mathers LP and won 3 Grammies and was the first rap album ever to be nominated "Album of the Year", selling more than 8 million records in the United States alone. He also stunned critics when he shot down all homophobic remarks by performing "Stan" with Elton John. Eminem made a movie, 8 Mile (2002). Though 2001 was a rough year for the rapper, being charged with weapon offenses, divorcing his wife, and almost going to prison, Marshall has explained his life in one word: "Claimer".

Kim Kardashian is the current Chief Taste Consultant of Beyond Meat. She previously worked at Glu Mobile as a Member of the Board of Directors.

Ivanka Trump

Mark Heising is a Managing Director of Medley Partners in San Francisco, CA. He founded the firm in 2004.Previously he was the President of VLSI Cores, which designs and licenses cryptographic integrated circuits.He holds six U.S. Patents in cryptography, compression and data communications.Mark serves as a director for Lam Aviation,Sion Power, Solexant and Tabula. On the non-profit side, Mark currently serves on the Board of Directors of the Bipartisan Policy Center and the Environmental Defense Fund.Mark earned a BS in Physics and a MS in Electrical Engineering and Computer Sciences from the University of California at Berkeley.

Khloé Kardashian

He is the Founder of Sustainable Energy and Agriculture Technology (SEAT, LLC) and AGR Health. He attended Cornell University, McGill University, and the Indian Institute of Technology, Kharagpur.

Dave Peacock is the former President of the Anheuser-Busch InBev subsidiary, Anheuser-Busch. He succeeded August Busch IV in 2008 after the acquisition of Anheuser-Busch was completed by InBev on November 18, 2008.

Mr. Mohit Goel is the CEO of one of India’s leading real estate firms – Omaxe Ltd. This second generation entrepreneur leveraged his sharp business acumen to bring about structural changes in Omaxe to essentially turn around the company at a time when the real estate sector had no traction and a tepid demand. Mohit is detail oriented and a sticklerfor punctuality.

Tim Schumacher is a Managing General Partner at World Fund. Tim previously worked at Sedo.com as a Member Board Of Directors. He attended University of Cologne and Stockholm School of Economics.Tim Schumacher Co-Founded and was the longtime CEO of the publicly traded company Sedo AG, which currently has revenues of 130m euros per year andmaintains approximately 350 employees. Since 2012 he has dedicated his professional career to the German startup scene, acting both as a business angel and mentor for young companies with economic potential. His current startups, among many others, are Eyeo/Adblock Plus, Aklamio, Hitfox and Ecosia.

Founder and Patent holder - GROTU mobile app @ 101 Islands LLC. Angel investor in 40 pre-IPO technology startups. Frequently invited by accelerators and angel forums to Judge startup competitions and discuss technology innovation. Former IT Consulting industry executive who sold hundreds of millions of dollars in consulting services to Fortune 500companies working for Cap Gemini, HCL, L&T, NTT data.

Mr. Vadon is one of the country’s leading internet retailing entrepreneurs, having co-founded two highly successful online specialty retail businesses. He brings to our Board in-depth experience in developing online businesses, effectively managing the use of technology, developing mobile applications and the associated user interfaces, as well ascritical business analytic acumen. His expertise is an invaluable resource for the Company as we continue to implement our interconnected retail strategy.In 2009, Mr. Vadon co-founded zulily, Inc., a daily deals site for moms, babies and kids, and currently serves as the Chairman of its board of directors. In 1999, Mr. Vadon founded Blue Nile, Inc., the leading online retailer of diamonds and fine jewelry, and served as the Chairman of its board of directors from its inception through 2013.During Blue Nile’s history, Mr. Vadon has also served as its Executive Chairman (from 2008 to 2011), Chief Executive Officer (from 1999 to 2008) and President (from 1999 to 2007). Prior to founding Blue Nile, Mr. Vadon was a consultant for Bain & Company, a management consulting firm, which he joined in 1992.

Sylvain Theveniaud - Managing Director @ Allianz Accelerator