subsidiary corporation

For purposes of this part, the term “subsidiary corporation” means any corporation (other than the employer corporation) in an unbroken chain of corporations beginning with the employer corporation if, at the time of the granting of the option, each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50 percent or more of the total combined voting power of all classes of stock in one of the other corporations in such chain.


26 USC § 424(f)

Scoping language

For purposes of this part
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