MUELLER INDUSTRIES INC 8-K

What Happened
Mueller Industries, Inc. announced a two-for-one forward stock split of its issued common stock. The split was effected by filing a Certificate of Amendment to the Company’s Restated Certificate of Incorporation with the Secretary of State of Delaware on June 29, 2026; the amendment became effective at 4:01 p.m. Eastern Time that day. Trading is expected to begin on a split-adjusted basis at market open on July 1, 2026. The Certificate of Amendment is attached as Exhibit 3.1 to the company’s Form 8-K (Item 5.03).

Key Details

• Split type: two-for-one forward stock split of issued common stock.
• Amendment filed/effective: filed June 29, 2026; effective at 4:01 p.m. ET on June 29, 2026.
• Authorized common shares increased from 250,000,000 to 500,000,000 to reflect the split.
• Split-adjusted trading expected to commence at market open on July 1, 2026.

Why It Matters
A two-for-one stock split doubles the number of shares held by each shareholder and generally halves the company’s per-share trading price, but it does not change the company’s overall market value or an individual investor’s ownership percentage. The increase in authorized shares gives the company room for the higher share count and potential future issuances. Retail investors should see their holdings reflected as twice the prior share count (subject to brokerage processing and any fractional-share rules) when trading opens on a split-adjusted basis.