Wyo. Stat. Ann. § 4-10-501

To the extent a beneficiary's interest in trust income or principal, or both, is not subject to a spendthrift provision or the exercise of the trustee's discretion, the court may authorize an assignee or a judgment creditor of the beneficiary to attach distributions of trust income or principal, or both, when the distributions are received by the beneficiary or by a third party for the benefit of the beneficiary.