MLI insider transactions filed; CEO retains over 1.06M shares

Rhea-AI Filing Summary

Mueller Industries (MLI) — insider sales reported. The Chairman & CEO reported open‑market sales of common stock across three days. On 10/23/2025, 158,000 shares were sold at a weighted average price of $104.32. On 10/24/2025, 70,000 shares were sold by a trust where he is beneficiary at a weighted average price of $103.60, and 72,000 shares were sold by a trust where his wife is beneficiary at a weighted average price of $103.79. On 10/27/2025, 50,000 shares were sold at a weighted average price of $103.42. Each price reflects multiple trades within the disclosed intraday ranges.

Following these transactions, beneficial ownership was reported as 1,069,241 shares held directly, 74,520 shares held indirectly by a trust where he is beneficiary, 68,000 shares held indirectly by a trust where his wife is beneficiary, and 13,600 shares held indirectly by children.

Insights

Corporate governance analyst

Routine Form 4 with sizable sales; holdings remain substantial.

The filing lists multiple open‑market sales by the Chairman & CEO at weighted average prices in the low $100s across 10/23/2025 to 10/27/2025. Weighted averages are accompanied by price ranges, indicating execution through multiple trades.

Post‑sale positions include 1,069,241 shares directly and additional indirect holdings via trusts and children. The filing does not state any use of proceeds or motivations. Insider sales can reflect personal diversification, liquidity, or planning; interpretation depends on broader context not provided here.

Subsequent filings may provide further updates to holdings and transaction activity, but actual impact depends on future disclosures.

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^*

Christopher Gregory L.

(Last) (First) (Middle)

2530 JOHNSON ROAD

(Street)

GERMANTOWN TN 38139

(City) (State) (Zip)

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

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman of the Board & CEO

3. Date of Earliest Transaction (Month/Day/Year)
10/23/2025

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

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

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

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	10/23/2025		S		158,000	D	$104.32(1)	1,119,241	D
Common Stock	10/24/2025		S		70,000	D	$103.6(2)	74,520	I	by trust where he is beneficiary
Common Stock	10/24/2025		S		72,000	D	$103.79(3)	68,000	I	by trust where wife is beneficiary
Common Stock	10/27/2025		S		50,000	D	$103.42(4)	1,069,241	D
Common Stock								13,600	I	by children

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. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $103.59 to $104.86, inclusive.

2. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.86 to $105.06, inclusive.

3. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.88 to $105.00, inclusive.

4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.65 to $104.13, inclusive.

Remarks:

	Anthony J. Steinriede, Attorney-in-Fact	10/27/2025
	** 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.

FAQ

What insider transactions did MLI report on Form 4?

Open‑market sales of common stock on 10/23/2025, 10/24/2025, and 10/27/2025 at weighted average prices of $104.32, $103.60, $103.79, and $103.42.

How many MLI shares did the CEO sell on each date?

10/23/2025: 158,000 shares; 10/24/2025: 70,000 shares (trust) and 72,000 shares (wife’s trust); 10/27/2025: 50,000 shares.

What were the price ranges for the reported MLI trades?

10/23: $103.59–$104.86; 10/24 (trust): $102.86–$105.06; 10/24 (wife’s trust): $102.88–$105.00; 10/27: $102.65–$104.13.

What are the CEO’s MLI holdings after these transactions?

Direct: 1,069,241 shares. Indirect: 74,520 (trust where he is beneficiary), 68,000 (trust where wife is beneficiary), and 13,600 (by children).

What roles does the reporting person hold at MLI?

Director and Officer; title reported as Chairman of the Board & CEO.

Does the filing describe derivative securities?

No derivative securities are listed in Table II for these transactions.