The onus is on the Canadian company. Here is the relevant section of the regs
2.3 Actual or proposed developments that require immediate disclosure include, but are not limited to, the following:
(a) changes in share ownership that may affect control of the Issuer;
(b) changes in corporate structure, such as reorganizations, amalgamations, etc.;
(c) take-over bids or issuer bids;
(d) major corporate acquisitions or dispositions;
(e) changes in capital structure;
This is a change in corporate structure and a proposed acquisition. In fact it would a "proposed development" in all of the categories!
Nothing on SEDAR yet. The disclosure is required to be immediate.