Who Was the CEO of Apple When Mac OS 9 Was Introduced?

When Mac OS 9 was officially introduced on October 23, 1999, Steve Jobs was serving as the CEO of Apple. Having returned to Apple in 1997, Jobs led the unveiling of Mac OS 9—marketed at the time as "The Best Internet Operating System Ever"—which served as the final major release of the classic Mac OS series before Apple transitioned to Mac OS X.

The Launch of Mac OS 9

Apple announced Mac OS 9 (codenamed "Sonata") in October 1999 under Steve Jobs' leadership. During this era, Jobs was heavily focused on positioning Apple products around the growing adoption of the internet. Mac OS 9 included over 50 new features, such as multi-user support, Sherlock 2 for internet searching, integrated file encryption, and Keychain for password management.

Steve Jobs and Apple's Interim Period

Although Steve Jobs was acting as the head of the company when Mac OS 9 launched, his formal title at that exact moment was "interim CEO" (often abbreviated as iCEO). Jobs had stepped into the role in July 1997 following the departure of former CEO Gil Amelio. It was not until January 2000, a few months after Mac OS 9 hit store shelves, that Jobs officially dropped "interim" from his title and became Apple's permanent CEO.

Transition to Mac OS X

Mac OS 9 played a crucial bridge role for Apple. While Jobs highlighted Mac OS 9 during its release, he and Apple engineering teams were concurrently developing NextStep technology (acquired from Jobs' company, NeXT) into a modern Unix-based platform. In May 2002, Steve Jobs famously staged a mock "funeral" for Mac OS 9 at Apple’s World Wide Developers Conference (WWDC), signaling the complete shift in Apple's development focus to Mac OS X.