Wis. Stat. § 220.18: Bank or corporate notaries; permitted acts.

It shall be lawful for any notary public who is a stockholder, director, officer, member, manager or employee of a bank or other corporation or limited liability company to take the acknowledgment of any party to any written instrument executed to or by that entity, or to administer an oath to any other stockholder, director, officer, member, manager, employee or agent of that entity, or to protest for nonacceptance or nonpayment bills of exchange, drafts, checks, notes and other negotiable instruments which may be owned or held for collection by that entity, if such notary is not a party to such instrument, either individually or as a representative of the entity.