(a) Unless the articles, bylaws or subsection (c) of this section provide otherwise, regular meetings of the board may be held without notice.
(b) Unless the articles, bylaws or subsection (c) of this section provide otherwise, special meetings of the board must be preceded by at least two (2) days' notice to each director of the date, time, and place, but not the purpose, of the meeting.
(c) In corporations 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, shall not be valid unless each director is given at least seven (7) days' written notice that the matter will be voted upon at a directors' meeting or unless notice is waived pursuant to § 4-33-823.
(d) Unless the articles or bylaws provide otherwise, the presiding officer of the board, the president or twenty percent (20%) of the directors then in office may call and give notice of a meeting of the board.