Gordon Moore, Intel
Net worth: $9.9 billion Foundation: Gordon and Betty Moore Foundation Established: 2000
Silicon Valley pioneer
Moore cofounded semiconductor firm Intel in 1968.
He had previously cofounded Fairchild Semiconductor. In 2000, he and his wife launched the Gordon and Betty Moore Foundation, which has over $6 billion in assets. A year later, Moore donated his Intel shares, worth at least $5 billion, to the foundation. It supports environmental conservation, patient care, scientific research and projects in the San Francisco Bay area.