# Top 50 CleanTech Angel Investors in June 2026

## Paul Forster
- Type: Angel
- Location: Cambridge, Massachusetts, United States
- Relevant deals: 4
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, FinTech, Financial Services

Paul Forster is an early-stage investor in the tech sector. He previously worked at Indeed as a Senior Advisor. Paul attended INSEAD, where he earned an MBA.

## Biz Stone
- Type: Angel
- Location: San Francisco, California, United States
- Relevant deals: 4
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, Apps, Mobile

Biz Stone is the Co-founder and CEO of Jelly Industries, Inc. He previously worked at The Obvious Corporation as a Co-founder and Chief Creative Officer. Biz Stone attended Northeastern University.

## Chris Murphy
- Type: Angel
- Location: Stockholm, Stockholms Lan, Sweden
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, SaaS, Information Technology

Chris Murphy is a Venture Partner at MS&AD Ventures. He previously cofounded SaaStock and was an early Web Summit employee.

## Christian Kaar
- Type: Angel
- Location: Austria, Pangasinan, Philippines
- Relevant deals: 3
- Stages: Seed, Angel
- Focus: Apps, Software, Information Technology

Christian Kaar is the VP of Finance and Business Analytics at Leaders21com. Christian Kaar attended University of Applied Sciences Upper Austria.

## David E. Weekly
- Type: Angel
- Location: Redwood City, California, United States
- Relevant deals: 3
- Stages: Seed, Angel, Pre-Seed
- Focus: Drones, Robotics, Aerospace

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.

## Uday Kumar Bangalore Shivaraman
- Type: Angel
- Location: Bengaluru, Karnataka, India
- Relevant deals: 3
- Stages: Seed, Series B, Equity Crowdfunding
- Focus: FinTech, Financial Services, E-Commerce

Angel / Sophisticated Investor and Trader (Ex London Stock Exchange(LSE), Deutsche Bank, London Clearing House(LCH) ) , Invested in 60+ Startups / 4 successful exits (with Avg 20x) and counting more. (Web3 -> udaybs.ETH )Invested in following asset classes from past 2 decades across UK / India / US / Europe / 
-Private Equity (Seed / Growth / VC/ Acquisition / Merger)
- Equity Markets
- Real Estate
- FX
- Commodity
- Bonds
- Fintech, Blockchain, Crypto Market, Web3 , DeFi, NFT
- Derivative Markets / Hedging / F&O / CFDGrowing Wealth in bumpy economic rides - There is no secret formula. Investment is an art. Being vigilant, dynamic, connecting dots, evaluating risk with constant change, loads of patience and visualising medium to long term.Private Equity Investments across globe in following domains / categories:
- Energy - EV / Carbon Footprint
- Blockchain / FinTech / AI / ML / Web3 / DeFi
- D2C / B2C
- Food & Beverages
- Pharma
- Media & Entertainment

## Kristjan Raude
- Type: Angel
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Equity Crowdfunding
- Focus: Software, Automotive, Internet of Things

I am a serial entrepreneur and angel investor with 15+ years of international experience in sales & marketing, leading teams of 300+ with annual revenue of 10M+. Founder of 3 international companies and investor to 10+ startups. Member of the board at Estonian Business Angels Network.

## Kai Hansen
- Type: Angel
- Location: Berlin, Berlin, Germany
- Relevant deals: 3
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, E-Commerce, FinTech

business angel // entrepreneur // founder lieferando.de // boardmember booksy.com

## David Rowan
- Type: Angel
- Location: London, England, United Kingdom
- Relevant deals: 3
- Stages: Seed, Pre-Seed
- Focus: Software, Machine Learning, Information Technology

David Rowan is editor of the UK edition of WIRED magazine, which won 2009 Launch of the David Rowan is Editor of the WIRED UK, the technology and trends magazine covering online brands, gadgets and the culture that surrounds them.   David has reported on technology for The Times and Channel 4 News, the latter requiring him to illustrate the newiPod Video from the set of a porn shoot. He's also written for The Sunday Times and Telegraph Magazines, and edited the Guardian's on-line content.  David has curated an exhibition of British creative talent at the Government's Cabinet Forum conference. He has also addressed the TEDs, and frequently contributes on Newsnight and the Today programme. He also writes a monthly column for GQ.   David is in touch with many of the world's leading trend-setters and spotters. In presentations he looks at how the net is disrupting almost every sector, how apps change consumer behaviour and why 'social commerce' is killing traditional marketing. He reveals the 10 trends that will change your market in the next decade - and what you should be doing now to protect yourself.

## Justin Hamilton
- Type: Angel
- Location: Wellington, Wellington, New Zealand
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Series A
- Focus: Environmental Engineering, Aerospace, CleanTech

Justin Hamilton is Founder, CEO at Clutterbot.

## Matthias Ernst
- Type: Angel
- Location: Berlin, Berlin, Germany
- Relevant deals: 2
- Stages: Pre-Seed
- Focus: CleanTech, Software, Clean Energy

Matthias Ernst is a Managing Partner at ARRtist. He previously worked at XLETIX and attended IESE Business School.

## Bhavik Bajaj
- Type: Angel
- Relevant deals: 2
- Stages: Pre-Seed, Seed, Angel
- Focus: Information Technology, Software, FinTech

Bhavik Bajaj

## Kathy Fields
- Type: Angel
- Location: Andover, Minnesota, United States
- Relevant deals: 2
- Stages: Series A, Seed, Series B
- Focus: Water, CleanTech, Health Care

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

## Bill Gates
- Type: Angel
- Location: Washington, District of Columbia, United States
- Relevant deals: 2
- Stages: Series C, Series A, Series B
- Focus: Energy, Biotechnology, Manufacturing

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

## Peter Mertens
- Type: Angel
- Location: Kefar Sava, HaMerkaz, Israel
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Angel
- Focus: Software, Automotive, CleanTech

Peter Mertens

## Shashank Randev
- Type: Angel
- Location: Mumbai, Maharashtra, India
- Relevant deals: 2
- Stages: Angel, Seed, Pre-Seed
- Focus: FinTech, SaaS, CleanTech

Shashank is Founder VC and Co-Founder of 100X.VC - India's first venture fund to invest in early-stage startups using iSAFE Notes. Portfolio: https://www.100x.vc/. Investments through Randev Ventures Family Office in early-stage startups across India, SEA & USA with a keen interest in B2B Emerging technology, Deeptech,SaaS, Cleantech, and Web3. Randev Ventures is the private investment body of Randev Family Office. He brings entrepreneurial and investment understanding with 15+ years of cross-functional expertise. Previously, he was the Founding member and Vice President of VCCEdge, the SaaS data platform by VCCircle (acquired by News Corporation in 2015). He launched the SaaS platform, led revenue, product development, and growth initiatives for close to seven years at VCCEdge. He has additionally worked with NIIT Ltd. and Zensar Technologies Ltd.He is also an Angel Investor and Advisor with a keen interest and portfolio investments in B2B Emerging technology, Deeptech, SaaS, Cleantech, and Web3 startups. Shashank holds an undergraduate degree in Bachelor of Engineering from Nagpur University, and an MBA from International Management Institute (IMI), New Delhi.Shashank’s professional ability in developing, launching and making the first move when it comes to products and solutions is reflected in the novel model of 100X.VC. As a Co-Founder of 100X.VC, he is part of the Investment Committee and works closely with portfolio companies on how to improve the chances of new products succeeding. And helping them raise followon capital from growth stage VCs, CVCs, and family offices.Specialties: Entrepreneurship, Scaling up Startups, Angel & Seed Investment & Venture Capital

## Marc Tarpenning
- Type: Angel
- Location: San Francisco, California, United States
- Relevant deals: 2
- Stages: Series A, Seed, Series D
- Focus: Renewable Energy, Drones, Robotics

Marc Tarpe is based out of Redwood City, California and serves as the Venture Partner of Spero Ventures and also serves as the Board of Director of Wattch. Marc previously served as Co-Founder of Tesla. Marc attended the University of California, Berkeley.

## Gaurav Gupta
- Type: Angel
- Location: Mumbai, Maharashtra, India
- Relevant deals: 2
- Stages: Angel
- Focus: Solar, Energy, CleanTech

Gaurav Gupta

## Edward Kim
- Type: Angel
- Location: Seattle, Washington, United States
- Relevant deals: 2
- Stages: Angel
- Focus: CleanTech, Clean Energy, Renewable Energy

Edward Kim

## Leopold König
- Type: Angel
- Location: Hamburg, Arkansas, United States
- Relevant deals: 2
- Stages: Seed
- Focus: Battery, CleanTech, Chemical Engineering

Leopold König is the Co-Founder and Managing Director at Customcells. He was a Research Fellow at Fraunhofer Institute for Silicon Technology.

## Rand Hindi
- Type: Angel
- Location: Paris, Ile-de-France, France
- Relevant deals: 2
- Stages: Seed, Pre-Seed
- Focus: Software, Cryptocurrency, Information Technology

Rand Hindi is based out of United States and is the General Partner of Unit Ventures. Rand previously worked at Naval Group as an Advisor. Rand Hindi attended 
Singularity University. Rand Hindi has been awarded Rising Star.

## Serge Chiaramonte
- Type: Angel
- Location: London, England, United Kingdom
- Relevant deals: 2
- Stages: Seed, Pre-Seed
- Focus: FinTech, Financial Services, Information Technology

Serge Chiaramonte

## Andrea Dusi
- Type: Angel
- Location: Verona, Veneto, Italy
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Series A
- Focus: Biotechnology, Health Care, CleanTech

Entrepreneur and investor.
After working in management consulting, in 2006 he created Wish Days, known above all for the Emozione3 gift boxes. In April 2016, he sold the company to the Smartbox group with a millionaire exit. In 2017, together with Cristina Pozzi, already a partner in Wish Days he founded Impactscool.He is advisor of dozens oftechnological initiatives and business angels in 150+ startups focusing on clean tech.He is the author of the book “Come far fallire una startup ed essere fellici” – How to make a startup fail and be happy, published by Bompiani, Bestseller in 2018.

## Torge Thönnessen
- Type: Angel
- Location: Itzehoe, Schleswig-Holstein, Germany
- Relevant deals: 2
- Stages: Seed
- Focus: Battery, CleanTech, Chemical Engineering

Torge Thönnessen is the Co-founder and CEO at Custom Cells.

## Akshay Singhal
- Type: Angel
- Location: Bengaluru, Karnataka, India
- Relevant deals: 2
- Stages: Seed, Pre-Seed
- Focus: Pet, AgTech, Battery

Akshay Singhal is the Co-Founder and CEO at Log 9 Materials a sub-organization of Log 9 Spill Containment.

## Sir Ronald Cohen
- Type: Angel
- Location: London, England, United Kingdom
- Relevant deals: 2
- Stages: Series A, Seed
- Focus: Health Care, Financial Services, Apps

Ronald Cohen is Chairman of the Global Social Impact Investment Steering Group and The Portland Trust. He is a co-founder director of Social Finance UK (2007-11), Social Finance USA, and Social Finance Israel, and of Big Society Capital. He was co-founder Chair of Bridges Ventures (2002-2012).He chaired the Social Impact Investment Taskforceestablished under the UK’s presidency of the G8 (2013-2015), the Social Investment Task Force (2000-2010) and the Commission on Unclaimed Assets (2005-2007). In 2012 he received the Rockefeller Innovation Award for innovation in social finance.He co-founded and was Executive Chairman of Apax Partners Worldwide LLP (1972-2005). He was a founder director and Chairman of the British Venture Capital Association and a founder director of the European Venture Capital Association.He is a graduate of Oxford University, where he was President of the Oxford Union. He is an Honorary Fellow of Exeter College, Oxford. He has an MBA from Harvard Business School to which he was awarded a Henry Fellowship.He is a member of the Board of Dean’s Advisors at Harvard Business School and Vice-Chairman of Ben Gurion University. He is a former director of the Harvard Management Company and the University of Oxford Investment Committee. He is a former member of the Harvard University Board of Overseers (2007-2013), former Trustee of the British Museum (2005-2012) and a former trustee of the International Institute for Strategic Studies (2005-2011).In 2007, Sir Ronald published: “The Second Bounce of the Ball – Turning Risk into Opportunity”.

## Mark Cuban
- Type: Angel
- Location: Dallas, Texas, United States
- Relevant deals: 2
- Stages: Seed, Series A
- Focus: Software, Artificial Intelligence, Blockchain

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.

## Chris Sang
- Type: Angel
- Location: Sydney, New South Wales, Australia
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, E-Commerce, SaaS

Venture Capitalist, Managing Partner, Chief Technology Officer

## Karim Tabet Jalbout
- Type: Angel
- Location: London, England, United Kingdom
- Relevant deals: 2
- Stages: Seed
- Focus: Battery, CleanTech, Chemical Engineering

Karim Jalbout, based in London, leads the Digital and eCommerce segments of Egon Zehnder’s Technology and Communications Practice in Europe. Karim also leads the firm’s Chief Marketing Officers Practice in the UK. He is a trusted advisor to private equity, family-owned businesses, and start-ups at the C-suite and board levels. Karim has servedclients across hospitality, travel, publishing, financial services, telecommunications, pure play, and retail. He has deep experience in emerging markets, particularly India.Prior to joining Egon Zehnder, Karim was Global Head of Propositions & Sales at Sony Ericsson Mobile, where he drove early investment in the Android platform. Previously, Karim gained more than a decade of FMCG experience with Diageo. He started his career working in Brand Management for Guinness in Canada, then moved to London as Brand Controller Guinness and Malta Guinness for the Africa region. Karim subsequently led Baileys in the UK market and was Marketing Director for Guinness in Europe, including Ukraine and Russia. Karim earned a Bachelor of Commerce from Queen’s University in Canada and completed the Executive Education program at Stanford Graduate School of Business. He has been a key speaker at the Digital Innovation Summit as well as for Endeavour (a global entrepreneur network) and LIFE (an international non-profit organization for Lebanese Executives in Finance).

## Maximilian Odendahl
- Type: Angel
- Location: Cologne, Nordrhein-Westfalen, Germany
- Relevant deals: 2
- Stages: Seed, Series A
- Focus: Battery, CleanTech, Chemical Engineering

Maximilian Odendahl - CEO & Co-Founder @ Silexica

## Job Dura
- Type: Angel
- Relevant deals: 2
- Stages: Series A
- Focus: Energy, CleanTech, Architecture

Job Dura

## Elon Musk
- Type: Angel
- Location: Los Angeles, California, United States
- Relevant deals: 2
- Stages: Series A, Series B, Pre-Seed
- Focus: Apps, FinTech, Cryptocurrency

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.

## Eugene Goldberg
- Type: Angel
- Location: New York, New York, United States
- Relevant deals: 2
- Stages: Angel
- Focus: CleanTech, Clean Energy, Renewable Energy

Eugene Goldberg

## Markku Jääskelainen
- Type: Angel
- Location: Miami, Florida, United States
- Relevant deals: 2
- Stages: Seed, Series A
- Focus: Drones, Big Data, Software

Markku Jääskelainen.

## Alfred Luger
- Type: Angel
- Location: Austria, Pangasinan, Philippines
- Relevant deals: 2
- Stages: Seed, Angel, Pre-Seed
- Focus: Software, Apps, E-Learning

Alfred Luger

## Luke Kupersmith
- Type: Angel
- Location: Los Angeles, California, United States
- Relevant deals: 2
- Stages: Angel
- Focus: CleanTech, Clean Energy, Renewable Energy

Luke Kupersmith - President & CEO @ Lojistic

## Rex Burgdorfer
- Type: Angel
- Location: Chicago, Illinois, United States
- Relevant deals: 2
- Stages: Seed, Series A
- Focus: Fashion, Real Estate, Software

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

## Elizabeth Cutler
- Type: Angel
- Location: New York, New York, United States
- Relevant deals: 2
- Stages: Seed, Series A, Pre-Seed
- Focus: Women's, E-Commerce, Health Care

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.

## Garrett Camp
- Type: Angel
- Location: San Francisco, California, United States
- Relevant deals: 2
- Stages: Seed, Series A
- Focus: Software, Logistics, Apps

Garrett Camp is the Founder of Expa and Founding Partner of Mix. He attended the University of Calgary

## Ashley Mayer
- Type: Angel
- Location: San Francisco, California, United States
- Relevant deals: 2
- Stages: Seed, Series A, Pre-Seed
- Focus: Wellness, Health Care, Drones

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

## Ali Omar
- Type: Angel
- Location: Helsinki, Southern Finland, Finland
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Angel
- Focus: Software, SaaS, Artificial Intelligence

Ali Omar is a Member of the Finnish Business Angels Network. He attended Aalto University and the University of Oulu.

## Holly Branson
- Type: Angel
- Location: London, England, United Kingdom
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Series A
- Focus: Energy, CleanTech, Logistics

Holly Branson Chief Purpose and Vision Officer at Virgin.

## Anna Alex
- Type: Angel
- Location: Berlin, Berlin, Germany
- Relevant deals: 2
- Stages: Pre-Seed, Seed
- Focus: Software, CleanTech, Information Technology

In 2012 Anna together with her co-founder Julia launched OUTFITTERY with the vision to create a shopping experience for men that is convenient, fun and inspiring. Today, OUTFITTERY serves individual outfits to over 600k men in eight countries and Anna is one of the most famous female entrepreneurs in Europe. In 2016, she was voted amongst Europe’s“Inspiring Fifty”, the 50 most inspirational women in tech. Prior to OUTFITTERY Anna lead the IT of the Swiss group buying platform DeinDeal in Zurich. She studied economic sociology in Freiburg and Paris.

## Madis Müür
- Type: Angel
- Location: Tallinn, Harjumaa, Estonia
- Relevant deals: 2
- Stages: Seed, Equity Crowdfunding, Pre-Seed
- Focus: Apps, Cycling, Security

Madis Müür

## Guilherme Kudiess
- Type: Angel
- Location: Porto Alegre, Rio Grande do Sul, Brazil
- Relevant deals: 2
- Stages: Pre-Seed, Seed
- Focus: Artificial Intelligence, SaaS, CleanTech

Guilherme Kudiess - COO @ VENTIUR

## Vishal Rao
- Type: Angel
- Location: Boston, Massachusetts, United States
- Relevant deals: 2
- Stages: Seed, Pre-Seed
- Focus: Software, Artificial Intelligence, Information Technology

Advisory CTO and Angel Investor

## Luigi Bajetti
- Type: Angel
- Location: Silicon Valley, California, United States
- Relevant deals: 2
- Stages: Pre-Seed, Seed, Series A
- Focus: Software, Information Technology, Apps

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.

## Jonathan Seaton
- Type: Angel
- Location: Sheffield, Sheffield, United Kingdom
- Relevant deals: 2
- Stages: Seed, Pre-Seed
- Focus: Software, Education, Music

Jonathan Seaton is the co-founder and chief executive officer at Twinkl.

## David Helgason
- Type: Angel
- Location: Copenhagen, Hovedstaden, Denmark
- Relevant deals: 2
- Stages: Seed, Series A
- Focus: Software, Gaming, Information Technology

David is a technologist, the founder of Unity Technologies, non-exec director to others, and a restless entrepreneur with a passion for creating feedback loops between innovation and teams and products, applying new and old business models to changing industries, and pushing people to do the very best they can do.David's background is inprogramming, an assortment of university dabbling, creating companies, and helping entrepreneurs. He served as CEO of Unity Technologies since co-founding it in 2003 and until October 2014, with an unflinching vision to democratize game development, and to develop technology and business models for the next phase of the games industry. David Helgason attended the University of Copenhagen.

## Warren Buffett
- Type: Angel
- Location: Omaha, Nebraska, United States
- Relevant deals: 2
- Stages: Seed, Pre-Seed, Series A
- Focus: Health Care, Software, Health Diagnostics

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: