Susan Thompson Buffett Foundation Portfolio 2025: Berkshire Hathaway Dominates Holdings

Recently, Warren Buffett announced that he would be selling his Berkshire Hathaway shares by 2035 and donating them to his children’s foundations. He is not actually selling the stock; he is donating it to a couple of foundations.

There are four foundations that Buffett is associated with, excluding Bill Gates’s Gates Family Foundation. The biggest foundation of the four is the Susan Thompson Buffett Foundation. The other three are the Sherwood Foundation, Howard G. Buffett Foundation and NoVo Foundation. The Susan Thompson Buffett Foundation is a private charitable foundation established in 1964 by Warren Buffett to manage his philanthropic giving. Based in Omaha, Nebraska, the foundation is dedicated to expanding educational opportunities and supporting “reproductive health” and family planning initiatives in the United States and internationally.

Backed by decades of Berkshire Hathaway stock donations from Buffett, it has become one of the largest private foundations in the U.S., distributing hundreds of millions of dollars in grants annually.

All the data in this article comes from form 990s that foundations are required to file annually with the IRS. The forms are hard to read and understand, so we break it down for you.

The Susan Thompson Buffett Foundation filed their Form 990 in May 2026 for fiscal 2025.

In 2025, the foundation reported $2.73 billion in revenue, $1.62 billion in expenses, and $1.11 billion in net income, while net assets totaled $2.72 billion. In 2024, revenue was $1.71 billion, and expenses were $996 million. Net income also improved from $721 million. Net assets, however, declined slightly from $2.83 billion in 2024.

A closer look at the 2025 revenue shows that $1.20 billion came from contributions. All of it came from Warren Buffett in the form of 2,443,384 Berkshire Hathaway Class B shares.

Dividends and interest from securities brought in an additional $33 million, while net gains from sales of assets generated a further $1.48 billion. Practically all of these gains came from sales of Berkshire Hathaway stock, with only $163,000 coming from other publicly traded securities.