| Date/Season | Transaction |
|---|---|
| 1/15/2020 | Ottawa Senators send Sebastian Aho to the St Louis Blues for Antti Niemi |
| 2/21/2019 | Detroit Red Wings send Antti Niemi, NYR 2023 Rnd 1, DET 2024 Rnd 1 to the St Louis Blues for Kyle Turris |
| 2015 | Drafted in the 1st round, 11th overall by Detroit |
