| Date/Season | Transaction |
|---|
| 10/18/2018 | San Jose Sharks send Dennis Seidenberg (rental) to the Minnesota Wild for Colten Teubert, $2,000,000 |
| 3/23/2018 | San Jose Sharks send Justin Abdelkader, Stephen Johns, Steven Delisle to the Pittsburgh Penguins for Dennis Seidenberg |
| 3/15/2017 | UFA send Dennis Seidenberg to the Pittsburgh Penguins for 2 years at $3 million per year |
| 2/23/2015 | Toronto Maple Leafs send Dennis Seidenberg to the Florida Panthers for Linus Omark, $3,250,000 |
| 6/25/2014 | Pittsburgh Penguins send Dennis Seidenberg to the Toronto Maple Leafs for TOR 2018 Rnd 2 |
| 12/7/2013 | Pittsburgh Penguins send Juraj Mikus, $3,000,000 to the Los Angeles Kings for Dennis Seidenberg |
| 10/9/2013 | Washington Capitals send Dennis Seidenberg to the Los Angeles Kings for Connor Murphy, Matt Clark, LA 2019 Rnd 2 |
| 2/15/2012 | Inclusion Draft send Dennis Seidenberg to the Washington Capitals for 15th pick |
| 4/26/2010 | Philadelphia Flyers send Vojtech Polak, NJD 2013 Rnd 2 to the Pittsburgh Penguins for Alexei Cherepanov, Dennis Seidenberg, PHI 2013 Rnd 2 |
