Ind. Code § 23-2-6-25
(a) The act, omission, or failure of any official, agent, or other person acting for an individual, an association, a partnership, a limited liability company, a corporation, or a trust within the scope of the official's, agent's, or person's employment or office constitutes the act, omission, or failure of both:
(b) Except as provided in subsection (c), the following are jointly and severally liable for the violation of this chapter by a person and are liable to the same extent as the person:
(4) Each person who:
(c) A person is not liable under subsection (b) if the person proves that the person:
(2) in exercise of reasonable care could not have known;
of the existence of the facts on which the liability is alleged to exist.
As added by P.L.177-1991, SEC.10. Amended by P.L.8-1993, SEC.316.