Jon Rubinstein, the ex Palm CEO who joined Hewlett Packard after the company acquired Palm back in April 2010, has left the company. No reason for the executive’s departure has been given, though according to AllThingsD Rubinstein leaves HP effective today; “Jon has fulfilled his commitment and we wish him well,” HP spokeswoman Mylene Mangalindan said of the news. Rubinstein had been chief of the webOS division within HP, but was subsequently moved to a more generic “product innovation role.”















