S.D. Codified Laws § 47-25-28 (2026)
Where there are no members, or no members entitled to vote thereon, a sale, lease, exchange, mortgage, pledge, or other disposition of all, or substantially all, the property and assets of a corporation shall be authorized upon receiving the vote of a majority of the directors in office.
Source: SL 1965, ch 24 , § 46 (2).