17 C.F.R. § 227.501 – Restrictions on resales.

(a) Securities issued in a transaction exempt from registration pursuant to section 4(a)(6) of the Securities Act (15 U.S.C. 77d(a)(6)) and in accordance with section 4A of the Securities Act (15 U.S.C. 77d-1) and this part may not be transferred by any purchaser of such securities during the one-year period beginning when the securities were issued in a transaction exempt from registration pursuant to section 4(a)(6) of the Securities Act (15 U.S.C. 77d(a)(6)), unless such securities are transferred:
1. (1) To the issuer of the securities;
2. (2) To an accredited investor;
3. (3) As part of an offering registered with the Commission; or
4. (4) To a member of the family of the purchaser or the equivalent, to a trust controlled by the purchaser, to a trust created for the benefit of a member of the family of the purchaser or the equivalent, or in connection with the death or divorce of the purchaser or other similar circumstance.
(b) For purposes of this § 227.501, the term accredited investor shall mean any person who comes within any of the categories set forth in § 230.501(a) of this chapter, or who the seller reasonably believes comes within any of such categories, at the time of the sale of the securities to that person.
(c) For purposes of this section, the term member of the family of the purchaser or the equivalent includes a child, stepchild, grandchild, parent, stepparent, grandparent, spouse or spousal equivalent, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law, or sister-in-law of the purchaser, and shall include adoptive relationships. For purposes of this paragraph (c), the term spousal equivalent means a cohabitant occupying a relationship generally equivalent to that of a spouse.