Since rejoining in 1997 to the day he died, Steve Jobs did not sell a single share of Apple stock
From Apple's 2012 Proxy Statement filing with the SEC:
In 2011, Mr. Jobs’s compensation consisted of a $1 annual salary. As of the end of 2011, Mr. Jobs owned approximately 5.5 million shares of the Company’s common stock. Since rejoining the Company in 1997, Mr. Jobs had not sold any of his shares of the Company’s stock. Mr. Jobs held no unvested equity awards. The Company recognized that Mr. Jobs’s level of stock ownership significantly aligned his interests with shareholders’ interests.As of today, Steve Jobs's holdings in Apple are worth $2,319,515,000.