Business combination. Business combination shall mean any transaction of the type specified in paragraph (a) of Rule 145 under the Act (17 CFR 230.145) and any transaction involving the acquisition by one issuer, in exchange for all or a part of its own or its parent's stock, of stock of another issuer if, immediately after the acquisition, the acquiring issuer has control of the other issuer (whether or not it had control before the acquisition).
17 CFR § 230.501
As used in Regulation D ( 230.500 et seq. of this chapter), the following terms shall have the meaning indicated: