| Date/Season | Transaction |
|---|
| 1/28/2019 | New Jersey Devils send NJD 2023 Rnd 1, EDM 2023 Rnd 2 to the Nashville Predators for Cory Schneider, Jason Garrison, Karl Alzner, Nail Yakupov, NAS 2023 Rnd 1, FLA 2024 Rnd 3 |
| 3/15/2017 | UFA send Karl Alzner to the Nashville Predators for 3 years at $1.35 million per year |
| 7/24/2015 | New Jersey Devils send Michael DelZotto, $500,000 to the Winnipeg Jets for Karl Alzner, Yann Sauve |
| 4/6/2012 | Detroit Red Wings send Bryce Swan, Karl Alzner, DET 2016 Rnd 2 to the Winnipeg Jets for Dan Fritsche |
| 2011 | Drafted in the 1st round, 5th overall by Detroit |
