Mueller Industries grants EVP 9,000 performance shares

Miritello Christopher John reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Miritello Christopher John reported acquisition or exercise transactions in this Form 4 filing.

Mueller Industries Inc. reported that Executive Vice President, General Counsel and Secretary Christopher John Miritello received a grant of 9,000 shares of performance-based restricted stock at no cash cost. These shares may be earned between 0% and 200% of the 9,000-share target based on adjusted EBITDA performance over the three-year period from December 28, 2025 through December 30, 2028, with a vesting date of July 30, 2031. Following this award and a previously effected 2-for-1 stock split on June 30, 2026, under which he received an additional 131,018 shares as a stock dividend, Miritello directly owns 271,036 shares of Mueller Industries common stock.

Insider Trade Summary

Grant/Award: 9,000 shares

Grant/Award 1 txn

Insider Miritello Christopher John

Role EVP, Gen. Counsel, Secretary

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	9,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 271,036 shares (Direct)

Footnotes (2)

1. F1. Represents performance-based restricted stock, which may be earned between 0% and 200% of the target amount reported herein based upon the Issuer's actual performance as compared with an adjusted EBITDA target during the three-year period from December 28, 2025 through December 30, 2028. The vesting date is July 30, 2031.
2. F2. On June 30, 2026, the Issuer effected a 2-for-1 stock split of its common stock in the form of a stock dividend, as a result of which the Reporting Person received an additional 131,018 shares of common stock.

Key Figures

Performance-based restricted stock grant: 9,000 shares Payout range: 0%–200% of target Performance period: December 28, 2025 through December 30, 2028 +3 more

6 metrics

Performance-based restricted stock grant 9,000 shares Target amount of performance-based restricted stock awarded to Christopher Miritello

Payout range 0%–200% of target Range of shares that may be earned based on adjusted EBITDA versus target

Performance period December 28, 2025 through December 30, 2028 Three-year period over which adjusted EBITDA performance is measured

Vesting date July 30, 2031 Scheduled vesting date for the performance-based restricted stock

Additional shares from stock split 131,018 shares Shares received by Miritello in a 2-for-1 stock split via stock dividend

Shares owned after transaction 271,036 shares Total direct ownership of Mueller Industries common stock following the award and split

Key Terms

performance-based restricted stock, adjusted EBITDA, 2-for-1 stock split, stock dividend

4 terms

performance-based restricted stock financial

"Represents performance-based restricted stock, which may be earned between 0% and 200%"

Shares granted to employees or executives that are held back and only become actual, tradable stock if the company meets predefined performance targets; until those goals are met the shares cannot be sold. Think of it like a bonus held in escrow that’s released only when specific results are achieved — investors watch these awards because they tie management pay to company outcomes, can dilute existing shareholders when released, and signal how confident or incentivized insiders are to meet growth or profitability goals.

adjusted EBITDA financial

"based upon the Issuer's actual performance as compared with an adjusted EBITDA target"

Adjusted EBITDA is a way companies measure how much money they make from their core operations, like running a business, by removing certain costs or income that aren’t part of regular business activities. It helps investors see how well a company is doing without distractions from unusual expenses or gains, making it easier to compare companies or track performance over time.

2-for-1 stock split financial

"the Issuer effected a 2-for-1 stock split of its common stock in the form"

stock dividend financial

"2-for-1 stock split of its common stock in the form of a stock dividend"

A stock dividend is when a company gives its existing shareholders extra shares instead of cash. It’s like receiving more pieces of the same pie rather than a bigger piece of money, which can increase the number of shares you own but usually doesn’t change the total value of your investment right away. Investors care about it because it can signal the company's growth and affect the stock’s price.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider equity award was reported for Mueller Industries (MLI)?

Christopher John Miritello received a grant of 9,000 shares of performance-based restricted stock in Mueller Industries. The award was made at no cash cost and is subject to future performance and vesting conditions over several years.

How can the 9,000 performance-based restricted shares in MLI be earned?

The 9,000-share award may be earned between 0% and 200% of the target amount based on Mueller Industries’ adjusted EBITDA performance over a three-year period, directly tying the final share issuance to the company’s financial results.

What is the performance period for Christopher Miritello’s MLI award?

The performance period runs from December 28, 2025 through December 30, 2028. During this three-year span, Mueller Industries’ adjusted EBITDA versus a target will determine how many of the performance-based restricted shares are ultimately earned.

When do Christopher Miritello’s performance-based restricted MLI shares vest?

The performance-based restricted stock has a vesting date of July 30, 2031. Even after the three-year performance period ends in 2028, the earned shares are scheduled to vest at this later date, extending the executive’s long-term equity alignment.

How many Mueller Industries (MLI) shares does Miritello hold after this Form 4?

After the reported grant and reflecting a prior stock split, Christopher Miritello directly owns 271,036 shares of Mueller Industries common stock. This figure includes additional shares he received via a 2-for-1 stock split in the form of a stock dividend.

What impact did Mueller Industries’ June 30, 2026 stock split have on Miritello’s holdings?

On June 30, 2026, Mueller Industries effected a 2-for-1 stock split through a stock dividend, giving Christopher Miritello an additional 131,018 shares of common stock. This split-adjusted increase is reflected in his post-transaction ownership total.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/05/2026 - 03:30 PM Accepted by SEC EDGAR 08/05/2026 - 03:29 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Miritello Christopher John

(Last) (First) (Middle)

800 HARBOR CREST DRIVE

(Street)

MEMPHIS TENNESSEE 38103

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MUELLER INDUSTRIES INC [ MLI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Gen. Counsel, Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/05/2026		A		9,000(1)	A	$0	271,036(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents performance-based restricted stock, which may be earned between 0% and 200% of the target amount reported herein based upon the Issuer's actual performance as compared with an adjusted EBITDA target during the three-year period from December 28, 2025 through December 30, 2028. The vesting date is July 30, 2031.

2. On June 30, 2026, the Issuer effected a 2-for-1 stock split of its common stock in the form of a stock dividend, as a result of which the Reporting Person received an additional 131,018 shares of common stock.

Remarks:

	Anthony J. Steinriede, Attorney-in-Fact	08/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)