Multiple highly authoritative and relevant sources from reputable outlets, including CNBC, Associated Press, Globe and Mail, and industry-specific publications, consistently report that Warren Buffett stepped down as Berkshire Hathaway CEO and Greg Abel assumed that role. These sources describe Abel publishing his first shareholder letter in his capacity as CEO, outlining commitments to maintain Buffett's investment culture, and confirm the leadership transition in early 2026 after Buffett's announced retirement. The reports align on key facts: Buffett's departure, Abel's succession, and public communication as CEO. There are no credible sources contradicting this, and the coverage comes from primary reporting on financial events and corporate announcements. The consistent, direct confirmation across multiple independent, authoritative sources makes it almost certain that Greg Abel has replaced Warren Buffett as CEO of Berkshire Hathaway.