Indiana Code Title 27. Insurance § 27-3-2-3

Sec. 3. Every person who is a member of such company on the day of such meeting shall, for thirty (30) days after the opening of subscription books as aforesaid, be entitled to subscribe to that proportionate number of shares of the capital stock, agreed upon to be issued, which the premium note or notes owing by such member and held by such company on unexpired policies, in force on the day of such meeting aforesaid, shall bear to the entire amount of such notes then held by such company, and upon the payment of such subscription, said note or notes shall be canceled and delivered to such members.  If at the end of thirty (30) days from the opening of subscription books, the full amount of the capital stock designated has not been subscribed under the provisions of this section, then other subscriptions may be received, to be paid for as the directors of said company may require within eighteen (18) months.