S.C. Code Ann. § 33-8-310 – Director or Officer conflict of interest

(a) A conflict of interest transaction is a transaction with the corporation in which a director of the corporation has a direct or indirect interest. A conflict of interest transaction is not voidable by the corporation solely because of the director's interest in the transaction if any one of the following is true:
1. (1) the material facts of the transaction and the director's interest were disclosed or known to the board of directors or a committee of the board of directors, and the board of directors or a committee authorized, approved, or ratified the transaction;
2. (2) the material facts of the transaction and the director's interest were disclosed or known to the shareholders entitled to vote and they authorized, approved, or ratified the transaction; or
3. (3) the transaction was fair to the corporation.
  If (1) or (2) has been accomplished, the burden of proving unfairness of any transaction covered by this section is on the party claiming unfairness. If neither (1) nor (2) has been accomplished, the party seeking to uphold the transaction has the burden of proving fairness.
(b) For purposes of this section, a director of the corporation has an indirect interest in a transaction if (1) another entity in which he has a material financial interest or in which he is a general partner is a party to the transaction or (2) another entity of which he is a director, officer, or trustee is a party to the transaction and the transaction is or should be considered by the board of directors of the corporation.
(c) For purposes of subsection (a)(1), a conflict of interest transaction is authorized, approved, or ratified if it receives the affirmative vote of a majority of the directors on the board of directors (or on the committee) who have no direct or indirect interest in the transaction, but a transaction may not be authorized, approved, or ratified under this section by a single director. If a majority of the directors who have no direct or indirect interest in the transaction vote to authorize, approve, or ratify the transaction, a quorum is present for the purpose of taking action under this section. The presence of, or a vote cast by, a director with a direct or indirect interest in the transaction does not affect the validity of any action taken under subsection (a)(1) if the transaction is otherwise authorized, approved, or ratified as provided in that subsection.
(d) For purposes of subsection (a)(2), a conflict of interest transaction is authorized, approved, or ratified if it receives the vote of a majority of the shares entitled to be counted under this subsection. Shares owned by or voted under the control of a director who has a direct or indirect interest in the transaction, and shares owned by or voted under the control of an entity described in subsection (b)(1), may not be counted in a vote of shareholders to determine whether to authorize, approve, or ratify a conflict of interest transaction under subsection (a)(2). The vote of those shares, however, is counted in determining whether the transaction is approved under other sections of Chapters 1 through 20 of this Title. A majority of the shares, whether or not present, that are entitled to be counted in a vote on the transaction under this subsection constitutes a quorum for the purpose of taking action under this section.