27 CFR §25.74

Changes in the list of stockholders furnished under the provisions of § 25.66(c)(1) shall be submitted annually by the brewer on July 1 or on any other date approved by the appropriate TTB officer. When the sale or transfer of capital stock results in a change in the control or management of the business, notification of the change will be made within 30 days in accordance with § 25.71.