Apple's senior vice president of Software Engineering Bertrand Serlet sold some of his shares last week.

According to notes filed with US regulators at the Securities and Exchange Commission (SEC), Serlet shifted 10,625 shares of common stock in a pre-arranged trading plan.

He sold the shares for $101.58 each, but conducted the transaction in a manner which meant he had to set the sale up in advance, in order to avoid any conflict of interest with his position as a company insider.

Serlet joined Apple in 1997, and has been critical to the development of Mac OS X. As vice president of Platform Technology, Serlet managed the largest part of the Mac OS software engineering group.

Before joining Apple, Serlet spent four years at Xerox PARC, before joining NeXT in 1989.