He joined The Walt Disney Studios in 1953 as an assistant film editor, where his credits included the landmark Academy Award®-winning True-Life Adventures features, "The Living Desert" and "The Vanishing Prairie." As a writer and production associate, he received Oscar nominations for his work on the short subject, "Mysteries of the Deep" in 1959, and in 2003 for his work as executive producer for "Destino."

Disney produced and directed some 35 other TV and theatrical production, including the landmark 1968 documentary, "Varda, the Peregrine Falcon," before leaving in 1977 to become an independent producer and investor.

In 1978, Disney founded Shamrock Holdings, Inc., a wholly-owned family enterprise headquartered in Burbank, California, which specializes in private equity, real estate, and public equities investing. He served as chairman of the company, which has approximately $1.5 billion of capital committed to funds.

An avid competitive sailor, Disney holds several elapsed-time records for offshore races in the Pacific Ocean, including multiple wins in the 2,225-mile Transpac.

Among his many professional and philanthropic activities, Disney served on the board of trustees of California Institute of the Arts, the advisory board of St. Joseph Medical Center, and the board of Big Brothers and Big Sisters of Greater Los Angeles, Inc. Additionally, he was an advisory member of the board of directors of the United States Committee for UNICEF, chairman emeritus of the board of directors of the Peregrine Fund, a member of the board of trustees of Ronald McDonald House charities, and a member of the board of trustees of the American Ireland Fund.

In 1993, he received the Winsor McCay Award (a special "Annie Award") from ASIFA-Hollywood (The International Animated Film Society). The McCay Award is for lifetime achievement in animation. In 1997, Disney was awarded the first "Mort Walker Award for Outstanding Contributions to the Cartoon Industry," by the Boca Raton International Museum of Cartoon Art.

Disney received an honorary Doctor of Fine Arts degree from his alma mater Pomona College in 1998. In 2002, he received an honorary Doctor of Fine Arts degree from Mercy College in New York. The following year, he was presented with the Trustees' Award and honorary Doctor of the Arts degree from CalArts.

Among his other honors, Disney was named a recipient of the 1999 National Catholic Education Association Elizabeth Ann Seton Award, which recognizes individuals who have made significant contributions to children and education. In April 1999, Disney received the Henry Bergh Humane Award from the ASPCA, and in spring 2000, he was awarded the Inaugural Environmental Leadership Award from the Audubon Society.

Disney is survived by his wife, Leslie, and four children from his marriage to Patricia Dailey Disney – Tim Disney, Roy Patrick Disney, Abigail Disney, and Susan Disney Lord. He is also survived by 16 grandchildren.

Funeral services will be private, followed by cremation. His ashes will be scattered at sea. Plans for a Life Celebration will be announced shortly.