| Date/Season | Transaction |
|---|---|
| 10/2/2020 | Philadelphia Flyers send Mark Letestu to the Ottawa Senators for Ryan Sproul |
| 6/2/2018 | Philadelphia Flyers send Clayton Keller, Jhonas Enroth, PHI 2023 Rnd 1, $2,000,000 to the Dallas Stars for Mark Letestu, Tyler Seguin, DAL 2024 Rnd 2, SJS 2025 Rnd 2, DAL 2026 Rnd 2, DAL 2028 Rnd 2, WPG 2028 Rnd 3 |
| 2015 | Drafted in the 1st round, 16th overall by Dallas |
