Sexton announced his retirement from professional hockey Saturday.
The Senators Dave Vest of the Coyotes' official site Sexton and Macoy Erkamps to the Penguins in exchange for Stefan Elliott and Tobias Lindberg on Wednesday.
Sexton was reassigned to AHL Belleville on Wednesday.
Sexton was recalled from AHL Belleville on Sunday.
Sexton was waived by Ottawa on Friday, Bruce Garrioch of the Ottawa Sunreports.
Sexton signed a two-year, two-way deal with the Senators on Saturday.
Sexton (hand) returned to action on Nov. 13 against AHL Albany, logging one shot on goal and four PIM in the contest.
Sexton had surgery on his hand Monday, Mark Divver of the Providence Journal reports.
Sexton (hand) is out indefinitely with a hand injury, Mark Divver of the Providence Journal reports.
Sexton is day-to-day with a minor injury, Mark Divver of The Providence Journal reports.