Form 4 Filing for Daniel Pieralisi

This Form 4 filing reports a transaction by Daniel Pieralisi, Executive VP - Admin of MUELLER INDUSTRIES INC. On July 30, 2026, Mr. Pieralisi disposed of 1,808 shares of Common Stock at a price of $66.57 per share. Following this transaction, Mr. Pieralisi directly owns 83,108 shares of Common Stock. The filing is made under Section 16 of the Securities Exchange Act of 1934.