not according to his Wiki page “He resides Barbados, a noted tax haven”.
Eugene Melnyk - Wikipedia
and the extent he went to to lower his taxes
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“Early on Mr Melnyk relocated to Barbados, establishing a subsidiary that owned intellectual property for the group. The location allowed Biovail to benefit from the Caribbean island’s very low tax rate of 1 per cent on annual profits over $2m, as well as a Canadian-Barbadian tax treaty which allowed cash to be transferred to the Canadian holding company without incurring a further tax liability.”