Jobs, while taking the position of Chairman of the firm, had no influence over Apple's direction and subsequently resigned from Apple in September 1985 and took a number of capable Apple employees with him to found NeXT Inc. In a show of defiance at being set aside by Apple Computer, Jobs sold all but one of his 6.5 million shares in the company for $70 million. Jobs then acquired the visual effects house, Pixar for $5M (). NeXT Inc. would build computers with futuristic designs and the UNIX-derived NEXTSTEP operating system. NeXTSTEP would eventually be developed into Mac OS X. While not a commercial success, due in part to its high price, the NeXT computer would introduce important concepts to the history of the personal computer (including serving as the initial platform for Tim Berners-Lee as he was developing the World Wide Web).