All three companies have said that they're going public on the Canadian markets through reverse takeovers of public companies. The difference between being listed on the CSE versus the more mainstream TSX comes down to regulations, as the latter prevents its issuers from having any U.S. assets on their books. This has forced many companies such as Canopy Growth Corp, Aurora Cannabis Inc., etc., to take elaborate legal measures and signing agreements restricting their U.S. asset acquisitions.