Markkula was already a wealthy retiree from Intel in January 1977, when he invested $250,000 in Apple to help fund the Apple II computer. In exchange, he received a 1/3 stake in the new company. As the third official employee after Steve Jobs and Steve Wozniak, Markkula managed the growing company and developed its business plan. He became the first chairman of Apple's Board of Directors from January 1977 to March 1981, when he succeeded Michael Scott as CEO and Steve Jobs became the next chairman. In April 1983, John Sculley succeeded Markulla as CEO. Markkula resumed the role of chairman in October 1993, following the ouster of Sculley. Markulla became vice chairman in February 1996 when Gil Amelio assumed the roles of chairman and CEO. After Amelio was fired and Steve Jobs returned to the board in 1997, Markulla retired again after 20 years at Apple.
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- An 'Unknown' Co-Founder Leaves After 20 Years of Glory and Turmoil by John Markoff at The New York Times (1997-09-01)
- Apple Computer Inc. Preliminary Confidential Offering Memorandum by Mike Markkula at the Computer History Museum (1978, archived 2013-08-22)