Mueller Industries CFO granted 34,000 performance shares

Martin Jeffrey Andrew reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Martin Jeffrey Andrew reported acquisition or exercise transactions in this Form 4 filing.

Mueller Industries reported that EVP, CFO & Treasurer Jeffrey Andrew received a grant of 34,000.0000 shares of performance-based restricted common stock on 2026-08-05 at a reported price of $0.00 per share. The award may be earned between 0% and 200% of the target based on adjusted EBITDA performance from December 28, 2025 through December 30, 2028 and is scheduled to vest on July 30, 2029. After this award, and reflecting a prior 2-for-1 stock split on June 30, 2026 that added 305,358 shares, he directly owns 658,925.0000 shares of common stock.

Insider Trade Summary

Grant/Award: 34,000 shares

Grant/Award 1 txn

Insider Martin Jeffrey Andrew

Role EVP, CFO & Treasurer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	34,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 658,925 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, 2029.
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 305,358 shares of common stock.

Key Figures

Performance-based restricted stock target: 34,000.0000 shares Direct holdings after transaction: 658,925.0000 shares Additional shares from stock split: 305,358 shares +4 more

7 metrics

Performance-based restricted stock target 34,000.0000 shares Grant of performance-based restricted stock to EVP, CFO & Treasurer Jeffrey Andrew on 2026-08-05

Direct holdings after transaction 658,925.0000 shares Total common shares directly owned following the reported award

Additional shares from stock split 305,358 shares Shares received via 2-for-1 stock split effected June 30, 2026

Performance payout range 0% to 200% of target shares Actual shares earned depend on adjusted EBITDA performance during the three-year measurement period

Performance period December 28, 2025 to December 30, 2028 Measurement period for adjusted EBITDA determining the award outcome

Vesting date July 30, 2029 Scheduled vesting date for the performance-based restricted stock

Stock split ratio 2-for-1 Common stock split in the form of a stock dividend on June 30, 2026

Key Terms

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

5 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..."

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.

vesting date financial

"The vesting date is July 30, 2029."

FAQ

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

What insider transaction did Mueller Industries (MLI) report for CFO Jeffrey Andrew?

Mueller Industries reported that CFO Jeffrey Andrew received 34,000.0000 shares of performance-based restricted common stock as a grant on 2026-08-05 at a reported price of $0.00 per share, classified as a grant, award, or other acquisition.

How many Mueller Industries (MLI) shares does CFO Jeffrey Andrew hold after this award?

Following the performance-based restricted stock grant, Jeffrey Andrew directly owns 658,925.0000 shares of Mueller Industries common stock, a figure that reflects an additional 305,358 shares received from a 2-for-1 stock split effected on June 30, 2026.

What performance period applies to the new Mueller Industries (MLI) performance-based stock award?

The performance-based restricted stock grant may be earned between 0% and 200% of target based on Mueller Industries’ adjusted EBITDA performance during a three-year period running from December 28, 2025 through December 30, 2028.

When do the performance-based restricted shares granted to Mueller Industries (MLI) CFO vest?

The performance-based restricted common stock granted to CFO Jeffrey Andrew has a specified vesting date of July 30, 2029, following the completion of the three-year adjusted EBITDA performance measurement period ending December 30, 2028.

How can the number of Mueller Industries (MLI) shares ultimately earned from this award vary?

The performance-based restricted stock may be earned between 0% and 200% of the reported 34,000-share target amount, depending on Mueller Industries’ actual adjusted EBITDA performance versus a target over the three-year period from December 28, 2025 through December 30, 2028.

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 - 03:30 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^*

Martin Jeffrey Andrew

(Last) (First) (Middle)

5435 COLLINGWOOD COVE

(Street)

MEMPHIS TENNESSEE 38120

(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, CFO & Treasurer

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		34,000(1)	A	$0	658,925(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, 2029.

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 305,358 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)