So looks like Cardiol filed to trade on the NASDAQ in March however didn't get approval until August 9th. They then began trading on the NASDAQ the next day - 10th August.
Since listing on the NASDAQ, Cardiol's SP (on their native exchange - TSX) has gained ~95%.
We could be in for a slightly longer wait for NASDAQ listing but as you said, bodes extremely well for us when it happens.