Wisconsin Statutes

Wis. Stat. § 403.401 (2026)

Signature

✓ current as of July 2026

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403.401403.401 Signature.

403.401(1)(1) A person is not liable on an instrument unless the person signed the instrument, or the person is represented by an agent or representative who signed the instrument and the signature is binding on the represented person under s. 403.402.

403.401(2)(2) A signature may be made manually or by means of a device or machine and may be made by the use of any name, including a trade or assumed name, or by a word, mark or symbol executed or adopted by a person with present intention to authenticate a writing.

403.401 HistoryHistory: 1995 a. 449.

Notes of Decisions

Cited in 4 cases, 1973–2010 · leading case: Bank Mut. v. S.J. Boyer Constr., Inc., 2010 WI 74 (Wis. 2010).

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Bank Mut. v. S.J. Boyer Constr., Inc., 2010 WI 74 (Wis. 2010). · cites it 4× “This court, relying on a provision of the UCC stating that "[n]o person is liable on [a negotiable] instrument unless his signature appears thereon," Wis. Stat. § 403.401 , explained: [The plaintiff] is not proceeding on the Akwa-Downey notes but upon a breach of the contract of…”

Wiebke v. Richardson & Sons, Inc., 265 N.W.2d 571 (Wis. 1978). · cites it 2× “Citing sec. 403.401, Stats., 1 the corporation asserts that it cannot be liable on a note which it did not sign.”

Willowglen Academy - Wisconsin, Inc. v. Connelly Interiors, Inc., 2008 WI App 35 (Wis. Ct. App. 2008). · cites it 4× “Con-nelly, however, makes no mention of Wis. Stat. § 403.401 , which elaborates on the term "signature": (1) A person is not liable on an instrument unless the person signed the instrument, or the person is represented by an agent or representative who signed the instrument and…”

Cont'l Bank & Trust Co. v. Akwa, 206 N.W.2d 174 (Wis. 1973). “12 Sec. 403.401, Stats., provides: “Signature.”

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