| Date/Season | Transaction |
|---|---|
| 7/14/2026 | Seattle Kraken send Frederick Gauthier, Denton Mateychuk, Adam Beckman to the Dallas Stars for Sean Monahan, Nikita Chibrikov, Mattias Samuelsson |
| 8/21/2021 | Washington Capitals send Mattias Samuelsson, Janne Tolvanen, PHI 2027 Rnd 2, $1,500,000 to the Toronto Maple Leafs for Jordan Staal (rental) |
| 2025 | Drafted in the 2nd round, 50th overall by Washington |
