Will Keith Kellogg

Kellogg founded the W. K. Kellogg Foundation in 1930 and over the following years gave it most of his Kellogg Company shares, which made it for decades the company's largest shareholder. A separate trust now holds the stock for the foundation, which focuses on children and families, especially in Michigan. It has gradually reduced its stake to diversify, so the link to the cereal business is weaker than it once was.