Wyoming Statutes
Wyo. Stat. § 17-29-409 (2026)
Standards of conduct for members and managers.
✓ current as of May 2026
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(a) A member of a member-managed limited liability company owes to the company and, subject to W.S. 17-29-901(b), the other members the fiduciary duties of loyalty and care stated in subsections (b) and (c). (b) The duty of loyalty of a member in a member-managed limited liability company includes the duties: (i) To account to the company and to hold as trustee for it any property, profit or benefit derived by the member: (A) In the conduct or winding up of the company's activities; (B) From a use by the member of the company's property; or (C) From the appropriation of a limited liability company opportunity; (ii) To refrain from dealing with the company in the conduct or winding up of the company's activities as or on behalf of a person having an interest adverse to the company; and (iii) To refrain from competing with the company in the conduct of the company's activities before the dissolution of the company. (c) Subject to the business judgment rule, the duty of care of a member of a member-managed limited liability company in the conduct and winding up of the company's activities is to act with the care that a person in a like position would reasonably exercise under similar circumstances and in a manner the member reasonably believes to be in the best interests or at least not opposed to the best interests of the company. In discharging this duty, a member may rely in good faith upon opinions, reports, statements or other information provided by another person that the member reasonably believes is a competent and reliable source for the information. (d) A member in a member-managed limited liability company or a manager-managed limited liability company shall discharge the duties under this chapter or under the operating agreement and exercise any rights consistently with the contractual obligation of good faith and fair dealing. (e) It is a defense to a claim under paragraph (b)(ii) of this section and any comparable claim in equity or at common law that the transaction was fair to or at least not opposed to the limited liability company. (f) All of the members of a member-managed limited liability company or a manager-managed limited liability company may authorize or ratify, after full disclosure of all material facts, a specific act or transaction that otherwise would violate the duty of loyalty. (g) In a manager-managed limited liability company, the following rules apply: (i) Subsections (a), (b), (c) and (e) of this section apply to the manager or managers and not the members; (ii) The duty stated under paragraph (b)(iii) of this section continues until winding up is completed; (iii) Subsection (d) of this section applies to the members and managers; (iv) Subsection (f) of this section applies only to the members; (v) A member does not have any fiduciary duty to the company or to any other member solely by reason of being a member.
Notes of Decisions
Cited in 7
cases (1 in the last 5 years), 2016–2023 · leading case: Tamra Acorn, Rebecca Shwen, & Federer Holding Co., LLC, a Wyoming close Ltd. Liab. Co. v. Lori Moncecchi & Dino Moncecchi, 2016 WY 124 (Wyo. 2016).
Tamra Acorn, Rebecca Shwen, & Federer Holding Co., LLC, a Wyoming close Ltd. Liab. Co. v. Lori Moncecchi & Dino Moncecchi, 2016 WY 124 (Wyo. 2016). “Wyo. Stat. Ann. § 17-29-409 (a) and (g). [¶35] The fiduciary duties owed to an LLC by its manager require the manager to act carefully and disinterestedly.”
Stevens v. Anesthesiology Consultants of Cheyenne, LLC, 415 P.3d 1270 (Wyo. 2018). “Stevens had breached his fiduciary duties as a manager of a LLC as set out in Wyo. Stat. Ann. § 17-29-409 . Specifically, the court found that Dr.”
Mantle v. N. Star Energy & Constr. LLC, 437 P.3d 758 (Wyo. 2019). “See Wyo. Stat. Ann. § 17-29-409 . Our emphasis on the differences between corporations and LLCs, our apparent caution to extend corporate common law to LLCs, and the lack of statutory language extending fiduciary duties to creditors, all constrain us from imposing fiduciary…”
Christine E. Aimone, Individually & as Successor Tr. of the Martin Aimone Revocable Trust Agreement Dated the 18Th Day of March, 1993, as Amended, & as of the Est. of Martin Aimone & Frances Colleen Aimone, Individually & as Successor Tr. of the Gay C. Aimone Revocable Trust Agreement Dated the 18Th Day of March, 1993, as Amended v. Benjamin W. Aimone Matthew M. Aimone William B. Aimone Jonathon I. Aimone, Individually & as of the Est. of Bruce William Aimone Michael J. Aimone Amanda M. Aimone Thomas A. Aimone Jacob D. Aimone & Behlee A. Aimone, 2023 WY 43 (Wyo. 2023). “Wyo. Stat. Ann. § 17-29-409 (a); § 17-29-409(g)(i) ( 2021).”
Anesthesiology Consultants of Cheyenne, Llc v. Ronald E. Stevens, M.D., & High Plains Anesthesia, P.C., a Wyoming Prof'l Corp., 2020 WY 67 (Wyo. 2020). “2016) (citing Wyo. Stat. Ann. § 17-29-409 (c) and (d) (LexisNexis 2019)); see also Wyo.”
Tamra Acorn, Rebecca Shwen, & Federer Holding Co., LLC, a Wyoming close Ltd. Liab. Co. v. Lori Moncecchi & Dino Moncecchi, 2016 WY 124 (Wyo. 2016). “Wyo. Stat. Ann. § 17-29-409 (a) and (g). 7 In appeal No.”
Patina Dev. Grp., LLC v. Debra Ann Wernowsky (Ga. Ct. App. 2020). “Wyo. Stat. § 17-29-409 (d) provides that [a] member in a member-managed limited liability company or a manager-managed limited liability company shall discharge the duties under this chapter or under the operating agreement and exercise any rights consistently with the…”
— Wyo. Stat. § 17-29-409(b)(i)(C) — 1 case
Tamra Acorn, Rebecca Shwen, & Federer Holding Co., LLC, a Wyoming close Ltd. Liab. Co. v. Lori Moncecchi & Dino Moncecchi, 2016 WY 124 (Wyo. 2016). “Wyo. Stat. Ann. § 17-29-409 (a) and (g). [¶35] The fiduciary duties owed to an LLC by its manager require the manager to act carefully and disinterestedly.”
— Wyo. Stat. § 17-29-409(f) — 1 case
Stevens v. Anesthesiology Consultants of Cheyenne, LLC, 415 P.3d 1270 (Wyo. 2018). “Stevens had breached his fiduciary duties as a manager of a LLC as set out in Wyo. Stat. Ann. § 17-29-409 . Specifically, the court found that Dr.”
— Wyo. Stat. § 17-29-409(g)(i) — 1 case
Christine E. Aimone, Individually & as Successor Tr. of the Martin Aimone Revocable Trust Agreement Dated the 18Th Day of March, 1993, as Amended, & as of the Est. of Martin Aimone & Frances Colleen Aimone, Individually & as Successor Tr. of the Gay C. Aimone Revocable Trust Agreement Dated the 18Th Day of March, 1993, as Amended v. Benjamin W. Aimone Matthew M. Aimone William B. Aimone Jonathon I. Aimone, Individually & as of the Est. of Bruce William Aimone Michael J. Aimone Amanda M. Aimone Thomas A. Aimone Jacob D. Aimone & Behlee A. Aimone, 2023 WY 43 (Wyo. 2023). “Wyo. Stat. Ann. § 17-29-409 (a); § 17-29-409(g)(i) ( 2021).”
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