Kightly is happy to be at a club he believes are on the up.
He told the club's official website: "It's a great club, an established Premier League club, so I am delighted to be here.
"Any footballer wants to play at the highest level and I am grateful to Stoke for giving me the chance to stay in the Premier League.
"The club sold itself to me. What they have achieved over the past few years has been remarkable.
"Then there are the excellent facilities and the supporters. It's definitely a club that is moving in the right direction."