La. Stat. tit. 35 § 4
It is lawful for any notary public who is a stockholder, director, officer, or employe of a bank or other corporation to take the acknowledgment of any party to any written instrument executed to or by such corporation, or to administer an oath to any other stockholder, director, officer, employe, or agent of such corporation, or to protest for non-acceptance or nonpayment bills of exchange, drafts, checks, notes, and other negotiable instruments which may be owned or held for collection by such corporation. It is unlawful for any notary public to take the acknowledgment of an instrument by or to a bank or other corporation of which he is a stockholder, director, officer, or employe, where the notary is a party to such instrument, either individually or as a representative of such corporation, or to protest any negotiable instrument owned or held for collection by the corporation, where the notary is individually a party to the instrument.
La. R.S. § 35:4