Mueller Industries, Inc. (NYSE:MLI) announced today that its Board of Directors has declared a two-for-one forward stock split. The Board of Directors also approved a proportionate increase in the number of authorized shares of common stock to accommodate the stock split. As a result of the stock split, which will be effected through an amendment to the Company's Restated Certificate of Incorporation, each stockholder of record as of the close of trading on June 25, 2026 (the "record date") will receive one additional share for every share held as of the record date. The additional share is expected to be distributed after the close of trading on June 30, 2026, and trading is expected to begin on a split-adjusted basis at market open on July 1, 2026, subject to the approval of the New York Stock Exchange.