26 USC 1032 - Exchange of stock for property

(a) Nonrecognition of gain or loss 
No gain or loss shall be recognized to a corporation on the receipt of money or other property in exchange for stock (including treasury stock) of such corporation. No gain or loss shall be recognized by a corporation with respect to any lapse or acquisition of an option, or with respect to a securities futures contract (as defined in section 1234B), to buy or sell its stock (including treasury stock).
(b) Basis 
For basis of property acquired by a corporation in certain exchanges for its stock, see section 362.