| Date/Season | Transaction |
|---|
| 8/20/2022 | Ottawa Senators send Darren Helm, OTT 2031 Rnd 2 to the Colorado Avalanche for Henrik Karlsson |
| 9/16/2020 | Seattle Kraken send Darren Helm, Eddie Lack to the San Jose Sharks for Luca Sbisa |
| 9/15/2020 | Calgary Flames send Darren Helm to the Seattle Kraken for expansion draft pick |
| 2/20/2015 | Vancouver Canucks send Darren Helm, Oscar Moller, VAN 2019 Rnd 1 to the Calgary Flames for Dan Catenacci, Jake Gardiner |
| 7/25/2014 | Vancouver Canucks send $4,000,000 to the Philadelphia Flyers for Darren Helm |
| 6/17/2012 | Philadelphia Flyers send Pierre-Marc Bouchard, Rosario Ruggeri to the Calgary Flames for Darren Helm, Joel Edmundson, Michael Leighton, CGY 2016 Rnd 1 |
| 2015 | Drafted in the 1st round, 22nd overall by Calgary (from NYRangers) |
