21st-century American philanthropists

Michael Robert Milken (born July 4, 1946) is an American financier. He is known for his role in the development of the market for high-yield bonds ("junk bonds"), and his conviction and sentence following a guilty plea on felony charges for violating U.S. securities laws. Milken's compensation while head of the high-yield bond department at Drexel Burnham Lambert in the late 1980s exceeded $1 billion over a four-year period, a record for U.S. income at that time. With a net worth of US$6 billion as of 2022, he is among the richest people in the world.Milken was indicted for racketeering and securities fraud in 1989 in an insider trading investigation. In a plea bargain, he pleaded guilty to securities and reporting violations but not to racketeering or insider trading. Milken was sentenced to ten years in prison, fined $600 million (although his personal website claims $200 million) and permanently barred from the securities industry by the U.S. Securities and Exchange Commission. His sentence was later reduced to two years for cooperating with testimony against his former colleagues and for good behavior. Milken was pardoned by President Donald Trump on February 18, 2020.
Since his release from prison, he has become known for his charitable donations. He is co-founder of the Milken Family Foundation, chairman of the Milken Institute, and founder of medical philanthropies funding research into melanoma, cancer, and other life-threatening diseases. A prostate cancer survivor, Milken has devoted significant resources to research on the disease.

Charlotte Mailliard Shultz (née Smith; September 26, 1933 – December 3, 2021) was a socialite, and philanthropist. She was the Chief of Protocol for the state of California, and the Chief of Protocol for the City and County of San Francisco. She was married to former United States Secretary of State George P. Shultz, from 1997 until his death in 2021.
Mailliard Shultz was President of the board of the War Memorial Performing Arts Center and a member of the boards of the San Francisco Symphony, Grace Cathedral, the Commonwealth Club of California, and the San Francisco Ballet. A native Texan, Mailliard Shultz often quipped about San Francisco, "... if I don't pay my dues, they may send me back to Texas!"

Harold Clark Simmons (May 13, 1931 – December 29, 2013) was an American businessman, investor, and philanthropist whose banking expertise helped him develop the acquisition concept known as the leveraged buyout (LBO) to acquire various corporations. He was the owner of Contran Corporation and of Valhi, Inc., (a NYSE traded company about 90% controlled by Contran). As of 2006, he controlled five public companies traded on the New York Stock Exchange: NL Industries; Titanium Metals Corporation, the world's largest producer of titanium; Valhi, Inc., a multinational company with operations in the chemicals, component products, Waste Control Specialists (waste management), titanium metals industries; CompX International, manufacturer of ergonomic products, and Kronos Worldwide, leading producer and marketer of titanium dioxide.

George Phydias Mitchell (May 21, 1919 – July 26, 2013) was an American businessman, real estate developer and philanthropist from Texas credited with pioneering the economic extraction of shale gas.

Pierre Morad Omidyar (born Parviz Morad Omidyar, June 21, 1967) is a French-born Iranian-American billionaire. A technology entrepreneur, software engineer, and philanthropist, he is the founder of eBay, where he served as chairman from 1998 to 2015. Omidyar and his wife Pamela founded Omidyar Network in 2004. As of 2023, Forbes ranked Omidyar as the 245th-richest person in the world with an estimated net worth of $8.7 billion.Omidyar is a long-term Democratic Party donor. Since 2010, he has been involved in online journalism as the head of investigative reporting and public affairs news service Honolulu Civil Beat. In 2013, he announced that he would create and finance First Look Media, a journalism venture to include Glenn Greenwald, Laura Poitras, and Jeremy Scahill.

Gordon Peter Getty (born December 20, 1933) is an American businessman and classical music composer, the fourth child of oil tycoon J. Paul Getty. His mother, Ann Rork, was his father's fourth wife. When his father died in 1976, Gordon assumed control of Getty's US$ 2 billion trust. His net worth was $2.1 billion in September 2020, making him number 391 on the Forbes 400 list of the wealthiest Americans.

Stephen Davison Bechtel Jr. (May 10, 1925 – March 15, 2021) was an American billionaire, businessman, civil engineer, and co-owner of the Bechtel Corporation. He was the son of Stephen Davison Bechtel Sr. and grandson of Warren A. Bechtel, who founded the Bechtel Corporation. He was known for expanding the global footprint of the corporation through several of its international projects. Some of the projects executed under his leadership of the company included King Khalid International Airport in Riyadh as well as Jubail Industrial City in Saudi Arabia as well as oil platforms in the North Sea, liquefied natural gas plants in Algeria, Indonesia and the United Arab Emirates.
Bechtel also served on the board of General Motors and International Business Machines. He had a bachelor's degree from the Purdue University and a master's degree from the Stanford Graduate School of Business.
At the time of his death, he had a net worth of nearly US$3 billion according to Forbes.