Ohio Rev. Code Ann. § 1109.55
(A) A state bank and its subsidiaries may engage in any of the transactions described in division (B) of this section only if one of the following applies:
(B) Division (A) of this section applies to all of the following:
(C) No state bank or its subsidiary shall do either of the following:
(1) Purchase as fiduciary any securities or other assets from an affiliate unless the purchase is permitted by one of the following:
(E) For purposes of division (C) of this section:
(1) "Principal underwriter" means any underwriter, in connection with a primary distribution of securities, that is any of the following: