Not quite; per http://en.wikipedia.org/wiki/Craigslist : "[Craigslist] is believed to be owned principally by Newmark, Buckmaster, and eBay (the three Board members). Ebay owns approximately 25%, and Newmark is believed to own the largest stake."

the employee that sold his 25% to ebay was not the only early employee of craiglists that had shares. And the only thing that has ever been publicly stated is that 25% belongs to ebay, not how much of the company Craig himself owns.