21.4.2.2. The rules provided for in section 21.4.2.3 apply at a particular time in respect of a corporation in connection with attribute trading restrictions if(a) shares of the capital stock of the corporation held by a person, or the total of all shares of the capital stock of the corporation held by members of a group of persons, as the case may be, have at the particular time a fair market value that exceeds 75% of the fair market value of all the shares of the capital stock of the corporation;
(b) shares of the capital stock of the corporation held by the person, or the total of all shares of the capital stock of the corporation held by members of the group of persons, have immediately before the particular time a fair market value that does not exceed 75% of the fair market value of all the shares of the capital stock of the corporation;
(c) the person or group of persons does not control the corporation at the particular time; and
(d) it is reasonable to conclude that one of the main reasons that the person or group of persons does not control the corporation is to avoid the application of one or more specified provisions.