| Date/Season | Transaction |
|---|---|
| 6/30/2020 | Chicago Blackhawks send CHI 2025 Rnd 1, David Fischer, $5,000,000 to the Washington Capitals for Dmitri Kosmachev |
| 10/18/2018 | Nashville Predators send Evan Brophey, Samuel Groulx, EDM 2023 Rnd 1 to the Ottawa Senators for Dmitri Kosmachev (rental), Thomas Vanek, DET 2025 Rnd 2, $1,500,000 |
| 3/8/2016 | New York Islanders send Dmitri Kosmachev, $4,000,000 to the Ottawa Senators for David Rundblad |
| 2004 | Drafted in the 2nd round, 41st overall by Atlanta |
