Indiana Code Title 27. Insurance § 27-1-8-3

Sec. 3.  (a) Except as provided in subsection (b), an amendment to the articles of incorporation so proposed shall be submitted to a vote of the shareholders, members, or policyholders at the annual or at the special meeting directed by the resolution of the board of directors proposing the amendment, and the proposed amendment shall be adopted upon receiving the affirmative votes of at least a majority of the stock, or such greater portion as the articles of incorporation may require, of the outstanding shares of stock entitled to vote, if a stock company;  and upon receiving the affirmative votes of at least two-thirds ( 2/3 ) of the members or policyholders voting at such annual or special meeting, if other than a stock company.

(b) Unless the articles of incorporation provide otherwise, a corporation's board of directors may adopt one (1) or more amendments to the corporation's articles of incorporation without shareholder, member, or policyholder action to:

(c) If a corporation changes its name under subsection (b)(6), the corporation shall, not more than thirty (30) days after the effective date of the amendment changing the corporate name, mail or deliver a written or printed notice of the new corporate name to each shareholder, member, or policyholder of record of the corporation.