Greg Abel is set to succeed Warren Buffett as CEO of Berkshire Hathaway on January 1, concluding Buffett's 60-year career. Abel, currently vice chairman of non-insurance operations, has been a longtime executive and is known for expanding the company's energy and infrastructure businesses. Buffett, 95, will remain chairman to ensure cultural continuity, having built Berkshire Hathaway on principles of patience, temperament, and long-term investment.