| Date/Season | Transaction |
|---|
| 1/16/2021 | Seattle Kraken send Simon Hjalmarsson (rental) to the Calgary Flames for Dylan Olsen |
| 1/13/2021 | Seattle Kraken send Joe Colborne, Dustin Tokarski, Chris Bigras, Freddie Hamilton to the San Jose Sharks for Simon Hjalmarsson, Brandon Baddock, Johnathan MacLeod, SJS 2031 Rnd 2 |
| 9/21/2020 | Vegas Golden Knights send Simon Hjalmarsson to the San Jose Sharks for $300,000 |
| 9/16/2020 | Vegas Golden Knights send Simon Hjalmarsson to the Columbus Blue Jackets for Christian Fischer, Two 2nds To Be Named Later |
| 9/15/2020 | Columbus Blue Jackets send Simon Hjalmarsson to the Vegas Golden Knights for expansion draft pick |
| 6/2/2015 | Toronto Maple Leafs send Keith Seabrook, Marek Schwarz, Mikko Koivu, Simon Hjalmarsson, TOR 2021 Rnd 2 to the Los Angeles Kings for Brian Elliott, Drew Shore, Marc Andre Cliche, Shea Weber, LA 2022 Rnd 1 |
| 7/21/2013 | Pittsburgh Penguins send Simon Hjalmarsson to the Toronto Maple Leafs for COL 2018 Rnd 1, TOR 2018 Rnd 3 |
| 3/10/2013 | Pittsburgh Penguins send Dustin Brown, Logan Stephenson, Patrick Berglund to the Nashville Predators for Ryan McDonagh, Simon Hjalmarsson, Vincent Lecavalier |
| 2011 | Drafted in the 2nd round, 34th overall by Pittsburgh (from Philly) |
