As the article points out, Woz was Chief Scientist at Fusion-IO [1] as well. That company struggled [2] before being acquired by SanDisk for less than the IPO price.
It was a different story in 2011 when Woz went on CNBC and said that the company "has grown as fast as Apple so far" [3] pushing the stock to the highest point it would ever reach just a month before the share lock-up expiration [4].