MedMen is now selling shares on the Canadian Securities Exchange. Here's why it still isn't possible for the $1.65 billion company to list in its home country.

MedMen Enterprises Inc. listed on the Canadian Securities Exchange with a $1.65 billion valuation on Tuesday, May 29, following a reverse takeover that represented one of the largest deals in the legal weed space to date.

Co-founder and chief executive officer Adam Bierman tells TheStreet why his company, which is the largest cannabis firm by enterprise value in the U.S., listed in Canada instead of on the big board or the New York Stock Exchange or the Nasdaq.