Sharks get: D Erik Karlsson, LW Francis Perron
Senators get: C Chris Tierney, D Dylan DeMelo, LW Rudolfs Balcers, C Josh Norris, conditional 2019 second-round pick, conditional 2019/2020 first-round pick, conditional 2021 second-round pick
Sharks get: D Erik Karlsson, LW Francis Perron
Senators get: C Chris Tierney, D Dylan DeMelo, LW Rudolfs Balcers, C Josh Norris, conditional 2019 second-round pick, conditional 2019/2020 first-round pick, conditional 2021 second-round pick