Mueller Industries (MLI) CEO sells 103,266 shares, keeps large stake

Rhea-AI Filing Summary

Mueller Industries Chairman and CEO Christopher L. Gregory reported an open-market sale of 103,266 shares of common stock at a weighted average price of $137.29 per share on April 27, 2026. After this transaction, he directly holds 804,911 common shares.

The filing also lists indirect holdings, including shares held by trusts where he or his spouse are beneficiaries, by his spouse, and by his children, which represent additional exposure to Mueller Industries stock beyond his direct position.

Insights

Insider trading analyst

CEO executes sizable open-market sale but retains large direct stake.

Christopher L. Gregory, Chairman and CEO of Mueller Industries, sold 103,266 common shares in an open-market transaction at a weighted average price of $137.29 per share. This is a meaningful sale in dollar terms but not a full exit.

Following the sale, he still directly owns 804,911 shares, and the filing lists additional indirect holdings through trusts, spouse, and children. There is no indication in the excerpt that the sale was under a Rule 10b5-1 plan, so timing context is not provided. Overall, this appears as a notable liquidity event while maintaining substantial exposure.

Insider Trade Summary

Net Seller: 103,266 shares ($14,177,389)

Net Sell 5 txns

Insider Christopher Gregory L.

Role Chairman of the Board & CEO

Sold 103,266 shs ($14.18M)

Type	Security	Shares	Price	Value
Sale	Common Stock	103,266	$137.29	$14.18M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 804,911 shares (Direct, null); Common Stock — 13,600 shares (Indirect, by children)

Footnotes (1)

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Key Figures

Shares sold: 103,266 shares Weighted average sale price: $137.29 per share Price range of sales: $137.00–$138.135 per share +3 more

6 metrics

Shares sold 103,266 shares Open-market sale of Mueller Industries common stock

Weighted average sale price $137.29 per share Common stock sale on April 27, 2026

Price range of sales $137.00–$138.135 per share Multiple sale transactions in reported trade

Direct holdings after transaction 804,911 shares Common stock directly owned following sale

Indirect trust holding (spouse beneficiary) 70,000 shares Common stock held by trust where spouse is beneficiary

Indirect trust holding (he is beneficiary) 72,520 shares Common stock held by trust where he is beneficiary

Key Terms

open-market sale, weighted average price, indirect ownership, trust where spouse is beneficiary

4 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

indirect ownership financial

""ownership_type": "indirect""

trust where spouse is beneficiary financial

"nature_of_ownership": "by trust where spouse is beneficiary""

Form 4 Insider Transactions: What Each Field Means →

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 TENNESSEE 38139

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/27/2026

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	04/27/2026		S		103,266	D	$137.29(1)	804,911	D
Common Stock								13,600	I	by children
Common Stock								134,392	I	by spouse
Common Stock								72,520	I	by trust where he is beneficiary
Common Stock								70,000	I	by trust where spouse is beneficiary

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 $137.00 to $138.135, inclusive.

Remarks:

	Anthony J. Steinriede, Attorney-in-Fact	04/29/2026
	** 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)

FAQ

What did Mueller Industries (MLI) CEO Christopher L. Gregory report in this Form 4?

He reported an open-market sale of 103,266 shares of Mueller Industries common stock. The shares were sold at a weighted average price of $137.29 on April 27, 2026, and he retained a substantial direct shareholding afterward.

How many Mueller Industries (MLI) shares does the CEO hold after the reported sale?

After the sale, Christopher L. Gregory directly holds 804,911 shares of Mueller Industries common stock. The filing also shows additional indirect holdings in trusts, by his spouse, and by his children, which together add to his overall economic exposure.

At what prices were the Mueller Industries (MLI) shares sold in this insider transaction?

The transaction used a weighted average price of $137.29 per share. According to the footnote, shares were sold in multiple trades at prices ranging from $137.00 to $138.135, inclusive, reflecting execution across that price band.

Is the Christopher L. Gregory transaction in Mueller Industries (MLI) an open-market sale?

Yes. The Form 4 describes the transaction code as an open-market sale of common stock. It records 103,266 shares sold at a weighted average price of $137.29, with no derivative exercises or tax-withholding entries in the provided data.

Does the Mueller Industries (MLI) CEO have indirect shareholdings in addition to his direct position?

Yes. The filing lists indirect ownership of common stock held by trusts, by his spouse, and by his children. These entries show separate post-transaction share amounts for each category, indicating additional indirect exposure to Mueller Industries shares.

Does this Mueller Industries (MLI) Form 4 show any option exercises or derivative positions?

No derivative exercises are shown in the excerpt. The derivativeSummary is empty, and the transaction summary reports zero exercise transactions, indicating the reported activity is limited to common stock holdings and one open-market sale.