Iowa Code § 504.1441

Assets of a dissolved corporation which should be transferred to a creditor, claimant, or member of the corporation who cannot be found or who is not competent to receive them shall be reduced to cash subject to known trust restrictions and deposited with the treasurer of state for safekeeping. However, in the treasurer of state’s discretion, property may be received and held in kind. When the creditor, claimant, or member furnishes satisfactory proof of entitlement to the amount deposited or property held in kind, the treasurer of state shall deliver to the creditor, member, or other person or to the representative of the creditor, member, or other person that amount or property.