Indiana Code Title 23. Business and Other Associations § 23-17-12-14

Sec. 14. (a) Unless the articles of incorporation or bylaws provide otherwise and except as provided in subsections (b) and (c), if a vacancy occurs on a board of directors, including a vacancy resulting from an increase in the number of directors, one (1) of the following may occur:

(b) Unless articles of incorporation or bylaws provide otherwise, if a vacant office was held by an appointed director, only the person who appointed the director may fill the vacancy.

(c) If a vacant office was held by a designated director, the vacancy must be filled as provided in articles of incorporation or bylaws.  In the absence of an applicable article of incorporation or bylaw, the vacancy may not be filled by the board of directors.

(d) A vacancy that will occur at a specific later date because of a resignation effective at a later date under section 7(b) of this chapter or otherwise may be filled before the vacancy occurs.  However, the new director may not take office until the vacancy occurs.