(1) Unless the articles or bylaws provide otherwise or unless the provisions of subsection (3) apply, regular meetings of the board may be held without notice.
(2) Unless the articles, bylaws, or subsection (3) provide otherwise, special meetings of the board must be preceded by at least 2 days' notice to each director of the date, time, and place, but not the purpose, of the meeting.
(3) In a corporation without members, any board action to remove a director or to approve a matter that would require approval by the members if the corporation had members is not valid unless each director is given at least 7 days' written notice that the matter will be voted upon at a directors' meeting or unless notice is waived pursuant to 35-2-430.
(4) Unless the articles or bylaws provide otherwise, the presiding officer of the board, the president, or 20% of the directors then in office may call and give notice of a meeting of the board.