Bill Gates on Leadership Transition

Gates's most consequential personnel decision came on June 11, 1980, when he persuaded Steve Ballmer, his Harvard friend, to abandon a Stanford MBA program and join Microsoft as its thirtieth employee and first business manager. Ballmer arrived with a Harvard degree in mathematics and economics from the class of 1977 and two years as an assistant product manager at Procter & Gamble, where his office mate was Jeff Immelt, the future General Electric chief. The original terms were $50,000 in salary plus ten percent of the profit he generated, with no equity, an arrangement restructured when Microsoft incorporated in 1981, swapping the profit share for an eight percent stake that Gates funded the majority of after Allen initially objected. Ballmer went on to run operations, operating systems development, and sales, becoming the de facto number two to Gates, then president in 1998 and chief executive in January 2000, before retiring in February 2014 in favor of Satya Nadella.

Steve Ballmer, whom Gates had met at Harvard, joined on June 11, 1980, and would succeed Gates as chief executive from January 2000 until February 2014. On June 25, 1981, Microsoft restructured as a Washington corporation, making Gates president and chairman of the board and Allen executive vice president and vice chairman. The partnership fractured in early 1983, when Allen left after receiving a Hodgkin lymphoma diagnosis, an exit preceded by months of strain over a contentious dispute about Microsoft equity. The two men later repaired the relationship, donated millions together to Lakeside School, and remained friends until Allen's death in October 2018, but the formal business partnership between Microsoft's two founders had effectively ended while the company was still on its way up, leaving Gates with undivided operating control of the firm he would lead as chief executive for another nineteen years.

Leadership of the foundation professionalized across its first quarter century: Patty Stonesifer served as the first chief executive until 2008, Jeff Raikes succeeded her, Susan Desmond-Hellmann took over in 2014, and Mark Suzman replaced her in February 2020. The founders' 2021 divorce forced governance changes, including a two-year trial arrangement after which either could exit; Melinda French Gates resigned as co-chair on May 13, 2024, effective that June, and in January 2025 the foundation was renamed the Gates Foundation with Bill Gates as sole chair. Warren Buffett resigned as trustee in June 2021 and clarified in June 2024 that the foundation would receive nothing further from his estate. The institution held $91 billion in assets at the end of 2025, had committed more than two billion dollars to pandemic response, and had co-hosted the 2019 Event 201 pandemic exercise with the World Economic Forum.

In June 2006 Gates announced he would transition out of his day-to-day Microsoft role to concentrate on philanthropy, splitting his responsibilities between Ray Ozzie, who took over management, and Craig Mundie, who took long-term product strategy; the two-year handover was completed on June 27, 2008. He stepped down as chairman in February 2014, handing the board chair to John W. Thompson and becoming a technology adviser to the newly appointed chief executive Satya Nadella, a position he has retained. In March 2020 Microsoft announced Gates would leave his board seats at both Microsoft and Berkshire Hathaway to devote himself to climate change, global health and development, and education. The Wall Street Journal later reported that his departure came before the board concluded an external law firm's probe, begun in late 2019, into an alleged inappropriate relationship with a Microsoft employee, leaving his four-decade operating role at the company fully behind.

The institution's later history pairs programmatic ambition with planned obsolescence. The Gates Notes-era initiatives piled up: the 2011 challenge to reinvent the toilet, the 2012 London family-planning summit that set a goal of reaching 120 million more women with contraceptives, the London Declaration on neglected tropical diseases the same year, India and Southeast Asia certified polio-free in 2014, and $1.75 billion committed to COVID-19 response in 2020, the year Africa was certified free of wild poliovirus. Governance followed: Bill Gates Sr., the foundation's north star and strategic guide, died in September 2020; Warren Buffett stepped down as trustee in 2021 after fifteen years, having contributed $43 billion to date; an independent governing board was appointed in 2022; Melinda French Gates left in 2024; and in May 2025 the $200 billion, 2045 sunset was announced. Gates insists the goal is not innovation itself but the impact it makes possible.