| Date/Season | Transaction |
|---|
| 7/26/2018 | Winnipeg Jets send Jason Akeson, Marc-Andre Bergeron, Mikko Lehtonen, Roland McKeown to the Washington Capitals for Graham Knott, Julius Nattinen, Luke Schenn, Vladislav Kamenev, $500,000 |
| 10/19/2012 | New Jersey Devils send Mikko Lehtonen to the Colorado Avalanche for $5,000,000 |
| 1/17/2011 | Philadelphia Flyers send Marek Zagrapan, Mikko Lehtonen, NAS 2014 Rnd 1, MIN 2014 Rnd 1 to the New Jersey Devils for NJD 2014 Rnd 1, CAR 2014 Rnd 3 |
| 11/29/2010 | Philadelphia Flyers send Dylan Olsen, Jake Gardiner, Jeremy Morin, Kenny Ryan, NAS 2014 Rnd 4, PHI 2014 Rnd 4 to the Florida Panthers for Mikko Lehtonen, Ryan O'Marra, Tomas Kurka |
| 2008 | Drafted in the 2nd round, 54th overall by Washington (from Carolina) |
