47-1A-824. Quorum and voting.Unless the articles of incorporation or bylaws require a greater number or unless otherwise specifically provided in this chapter, a quorum of a board of directors consists of:(1)A majority of the fixed number of directors if the corporation has a fixed board size; or(2)A majority of the number of directors prescribed, or if no number is prescribed the number in office immediately before the meeting begins, if the corporation has a variable-range size board.The articles of incorporation or bylaws may authorize a quorum of a board of directors to consist of no fewer than one-third of the fixed or prescribed number of directors determined under this section. If a quorum is present when a vote is taken, the affirmative vote of a majority of directors present is the act of the board of directors unless the articles of incorporation or bylaws require the vote of a greater number of directors. Source: SL 2005, ch 239, §151.
South Dakota Legal Code