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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a)
OF THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. )

| Filed by the Registrant |  | Filed by a Party other than the Registrant

Check the appropriate box:
| Preliminary Proxy Statement
| Confidential, for Use of the Commission Only (as permitted by Rule 14A-6(E)(2))
| Definitive Proxy Statement
| Definitive Additional Materials
| Soliciting Material under §240.14a-12

MUELLER INDUSTRIES, INC.

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):
| No fee required.
| Fee paid previously with preliminary materials.
| Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

RESULTS AT A GLANCE

SUMMARY OF OPERATIONS (Dollars in thousands except per share data) |  | 2022 ($) |  | 2021 ($) |  | 2020 ($) |  | 2019 ($) |  | 2018 ($)
Net sales |  | 3,982,455 |  | 3,769,345 |  | 2,398,043 |  | 2,430,616 |  | 2,507,878
Operating income |  | 877,149 |  | 655,845 |  | 245,838 |  | 191,403 |  | 172,969
Net income |  | 658,316 |  | 468,520 |  | 139,493 |  | 100,972 |  | 104,459
Adjusted EBITDA(1) |  | 914,507 |  | 645,535 |  | 272,399 |  | 272,399 |  | 208,590
Diluted earnings per share |  | 11.64 |  | 8.25 |  | 2.47 |  | 1.79 |  | 1.82
Dividends per share |  | 1.00 |  | 0.52 |  | 0.40 |  | 0.40 |  | 0.40
SUMMARY OF CASH FLOW |  | 2022 |  | 2021 |  | 2020 |  | 2019 |  | 2018
(Dollars in thousands) |  | ($) |  | ($) |  | ($) |  | ($) |  | ($)
Cash Flow from Operations |  | 723,943 |  | 311,701 |  | 245,073 |  | 200,544 |  | 167,892
Capital Expenditures |  | 37,639 |  | 31,833 |  | 43,885 |  | 31,162 |  | 38,481
Free Cash Flow(2) |  | 686,304 |  | 279,868 |  | 201,188 |  | 169,382 |  | 129,411
YEAR-END DATA |  | 2022 |  | 2021 |  | 2020 |  | 2019 |  | 2018
(Dollars in thousands except per share data) |  | ($) |  | ($) |  | ($) |  | ($) |  | ($)
Cash, cash equivalents and ST investments |  | 678,881 |  | 87,924 |  | 119,075 |  | 97,944 |  | 72,616
Total Assets |  | 2,242,399 |  | 1,728,936 |  | 1,528,568 |  | 1,370,940 |  | 1,369,549
Total Debt |  | 2,029 |  | 1,875 |  | 327,876 |  | 386,254 |  | 496,698
Ratio of current assets to current liabilities |  | 4.4 to 1 |  | 2.7 to 1 |  | 2.4 to 1 |  | 3.0 to 1 |  | 3.0 to 1
Book value per share |  | 31.42 |  | 21.33 |  | 13.61 |  | 11.30 |  | 9.67

2022 HIGHLIGHTS

(1) | Adjusted EBITDA is a non-GAAP financial measure. See Appendix A for a reconciliation of Adjusted EBITDA to our results reported under GAAP.
(2) | Free cash flow is a non-GAAP financial measure, which represents cash flow from operations minus capital expenditures. Both cash flow from operations and capital expenditures presented above are as reported in the Company’s Annual Reports on Form 10-K for the years presented.

| # MESSAGE FROM OUR CHAIRMAN |

Dear Stockholders:

2022 was marked by extraordinary market conditions for our industry, and while our team certainly benefitted from some tailwinds, our exceptional results reflect our Company’s fundamental strength and resilience, particularly when faced with challenges and uncertainty.

Mueller’s net sales in 2022 eclipsed $3.98 billion, a 5.7% increase over the previous record set in 2021, led by strength in our North American operations, particularly within our domestic businesses. Most of our U.S. businesses began 2022 where 2021 left off, with demand exceeding industry capacity and historically high backlogs and lead times. We experienced solid demand in our primary end market, building construction, led by residential housing starts nearing a 15-year peak.

We achieved $877 million in reported operating income in 2022, a 33.7% increase over 2021, and our highest ever earnings of $11.64 per diluted share. While record sales played an important role, continued gross margin improvement propelled our profitability. In conjunction with favorable demand, gross margins have grown over the past five years due to the following strategic actions:

• | investments to reduce costs, increase throughput and sustain our operations;
• | acquisitions in primary markets and core product lines that have fortified our market positions; and
• | the expansion of our portfolio of value-added businesses and products that have higher gross margin profiles.

Our strong profitability and working capital management drove $724 million in cash generated by operations, which enabled us to pay down all debt and build a healthy cash balance to support our capital allocation priorities of reinvestment in our operations, growth through acquisition and returns to our stockholders. In 2022, we increased our annual dividend by 92% to $1.00 per share, and we were very pleased to once again increase our dividend by 20% for the first quarter of 2023.

Our highest priorities remain the health and well-being of our employees and the long-term sustainability of our Company. In that spirit, and in addition to our day-to-day operational excellence, we successfully executed a number of long-term initiatives in 2022:

#### Business & Operational Initiatives

• | Since we began reporting our safety performance 15 years ago, we achieved our lowest three-year average Total Incidence Rate (TIR). In 2022, our legacy mill businesses had their lowest ever level of OSHA recordable incidents.
• | Following years of underperformance when we held a minority interest, our Middle East copper tube mill was successfully restructured under our control and is now profitable.

• | We launched our patented line of air conditioning and refrigeration (ACR) press fittings, thereby completing an intense, six-year design and development process. Skilled labor remains a concern for our contractor base, and as such, the expansion of mechanical press technology will greatly benefit the air conditioning and refrigeration sector.
• | We completed the installation of a new copper scrap refiner in our United Kingdom copper tube mill. The startup was delayed due to regulatory hurdles, but we are now in the commissioning phase. The refiner will reduce costs and our carbon footprint, while also providing the site with ample raw material for production.
• | In late August, a fire completely destroyed our Westermeyer manufacturing operations. Nonetheless, our employees showcased their resilience by working from makeshift operations, and Westermeyer was back at 85% capacity by year-end. Our new plant is expected to be completed during the second quarter of 2023, and Westermeyer will be stronger than ever before.

#### Reporting Initiatives

• | In line with our continued commitment to environmentally sustainable business practices and social responsibility, we expanded upon our ESG reporting initiatives and disclosed our Scope 2 emissions in our annual Sustainability Report. We also completed the work necessary to publish our Scope 3 emissions, and will do so in 2023.
• | In September, we launched an enhanced investor website and published our first investor presentation. These materials provide our stakeholders with an in-depth view of our operating principles and business transformation, along with a better understanding of our strengths, value proposition and strategic priorities going forward.

As we head into 2023, we recognize that economic conditions are changing. The continued rise in interest rates, combined with elevated tensions across the globe, will give rise to further challenges. We anticipate that U.S. residential building markets will decline compared to 2022. Notwithstanding, the housing market remains underserved, and as such, we believe that demand levels will remain reasonably healthy relative to industry capacity. Other important sectors remain strong, including commercial construction, refrigeration, transportation and infrastructure, particularly related to water transmission and quality. On the international front, we believe that conditions have bottomed out after a difficult 2022, and that our businesses are therefore well prepared for a rebound.

We have many pillars of strength to draw upon, and foremost among them is our balance sheet. With no debt and ample cash reserves, we can and will continue to invest in our operations and to act decisively when opportunities arise. Other key advantages include our decentralized structure, diverse portfolio, sustainable operations, and most of all, our talented employees who make it all happen. With origins dating back more than a century, time and again, our Company has proven its ability to persevere through challenges and emerge even stronger than before. We plan to continue that tradition in the year ahead.

Once again, I want to express my appreciation to our dedicated employees, loyal customers and valued stockholders for their confidence and continued support.

Very truly yours,

Greg Christopher
Chairman & CEO

THURSDAY, MAY 4, 2023

8:00 A.M., Central Time

150 Schilling Boulevard,
Second Floor
Collierville, Tennessee 38017

REVIEW YOUR PROXY STATEMENT AND VOTE IN ONE OF FOUR WAYS:
BY INTERNET http://www.proxyvote.com |
BY TELEPHONE Call the telephone number on your proxy card. |
BY MAIL Mark, date, sign and return your proxy card in the enclosed envelope |
IN PERSON Attend the Annual meeting at the Company’s headquarters. |
It is important that your shares be represented at the Annual Meeting regardless of the size of your holdings. Whether or not you intend to be present at the meeting in person, we urge you to mark, date and sign the enclosed proxy card and return it in the enclosed self-addressed envelope, which requires no postage if mailed in the United States.

| NOTICE of Annual Meeting of Stockholders

PURPOSE To vote on four proposals:
1. | To elect eight directors, each to serve on the Company’s Board of Directors (the “Board”), until the next annual meeting of stockholders (tentatively scheduled for May 9, 2024), or until his or her successor is elected and qualified;
2. | To consider and act upon a proposal to approve the appointment of Ernst & Young LLP, independent registered public accountants, as auditors of the Company for the fiscal year ending December 30, 2023;
3. | To conduct an advisory vote on the compensation of the Company’s named executive officers (“NEOs”); and
4. | To conduct an advisory vote on the frequency with which the Company should hold future advisory votes on the compensation of the Company’s NEOs.
To conduct and transact such other business as may properly be brought before the Annual Meeting and any adjournment thereof.

RECORD DATE

Only stockholders of record at the close of business on March 13, 2023, will be entitled to notice of and vote at the Annual Meeting or any adjournment(s) thereof. A complete list of stockholders entitled to vote at the Annual Meeting will be prepared and maintained at the Company’s corporate headquarters at 150 Schilling Boulevard, Suite 100, Collierville, Tennessee 38017. This list will be available for inspection by stockholders of record during normal business hours for a period of at least 10 days prior to the Annual Meeting.

/s/ Christopher J. Miritello
Christopher J. Miritello
Corporate Secretary
March 23, 2023

TABLE OF CONTENTS

PROXY SUMMARY | 7
INFORMATION ABOUT VOTING AND THE ANNUAL MEETING | 7
2022 PERFORMANCE | 8
ANNUAL MEETING OF STOCKHOLDERS | 8
AGENDA AND VOTING MATTERS | 8
PROPOSAL 1: ELECTION OF DIRECTORS | 9
PROPOSAL 2: RATIFICATION OF INDEPENDENT AUDITORS | 9
PROPOSAL 3: ADVISORY VOTE TO APPROVE COMPENSATION OF NEOS | 10
PROPOSAL 4: ADVISORY VOTE ON THE FREQUENCY OF FUTURE STOCKHOLDER ADVISORY VOTES TO APPROVE NEO COMPENSATION | 10
PROPOSAL 1: ELECTION OF DIRECTORS | 11
SELECTING NOMINEES TO THE BOARD | 11
DIRECTOR NOMINEE BIOGRAPHIES | 12
CORPORATE GOVERNANCE | 14
GOVERNANCE HIGHLIGHTS | 14
DIRECTOR INDEPENDENCE | 14
BOARD OF DIRECTORS AND ITS COMMITTEES | 14
BOARD’S ROLE IN RISK OVERSIGHT | 16
STANDARDS OF CONDUCT | 17
COMMUNICATION WITH THE BOARD OF DIRECTORS | 18
RELATED PARTY TRANSACTIONS | 18
ENVIRONMENTAL, SOCIAL AND GOVERNANCE (ESG) RISK MANAGEMENT AND SUSTAINABILITY | 18
2022 DIRECTOR COMPENSATION | 19
ELEMENTS OF DIRECTOR COMPENSATION | 19
2022 NON-EMPLOYEE DIRECTOR COMPENSATION | 20
STOCK OWNERSHIP POLICY FOR DIRECTORS | 20
PROPOSAL 2: APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM | 21
REPORT OF THE AUDIT COMMITTEE OF THE BOARD OF DIRECTORS | 22
PROPOSAL 3: ADVISORY VOTE ON APPROVAL OF THE COMPENSATION OF THE COMPANY’S NAMED EXECUTIVE OFFICERS | 23
COMPENSATION DISCUSSION AND ANALYSIS | 24
EXECUTIVE SUMMARY | 24
DETERMINATION OF EXECUTIVE COMPENSATION | 26
ELEMENTS OF COMPENSATION | 26
COMPENSATION RISK MANAGEMENT | 32
COMPENSATION AND PERSONNEL DEVELOPMENT COMMITTEE REPORT | 33
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION | 33
EXECUTIVE COMPENSATION TABLES | 34
SUMMARY COMPENSATION TABLE FOR 2022 | 34
2022 GRANTS OF PLAN BASED AWARDS TABLE | 35
OUTSTANDING EQUITY AWARDS AT FISCAL 2022 YEAR-END | 37
2022 STOCK VESTED AND OPTIONS EXERCISED | 38
POTENTIAL PAYMENTS UPON TERMINATION OF EMPLOYMENT OR CHANGE IN CONTROL AS OF THE END OF 2022 | 39
PAY VERSUS PERFORMANCE TABLE | 40
PROPOSAL 4: ADVISORY VOTE ON THE FREQUENCY OF FUTURE STOCKHOLDER ADVISORY VOTES TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION | 44
PRINCIPAL STOCKHOLDERS | 45
BENEFICIAL OWNERSHIP OF COMMON STOCK BY INSIDERS | 46
DELINQUENT SECTION 16(a) REPORTS | 47
ADDITIONAL MATTERS | 48
VOTING SECURITIES | 48
STOCKHOLDER NOMINATIONS FOR BOARD MEMBERSHIP AND OTHER PROPOSALS FOR THE 2024 ANNUAL MEETING | 48
OTHER INFORMATION | 49
NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE 2023 ANNUAL MEETING TO BE HELD ON MAY 4, 2023 | 50
HOUSEHOLDING OF ANNUAL MEETING MATERIALS | 50

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 6

Back to Contents |

| # PROXY SUMMARY

THIS SUMMARY HIGHLIGHTS SELECTED INFORMATION IN THIS PROXY STATEMENT. PLEASE REVIEW THE ENTIRE PROXY STATEMENT AND OUR ANNUAL REPORT ON FORM 10-K BEFORE VOTING YOUR SHARES.

— | ## INFORMATION ABOUT VOTING AND THE ANNUAL MEETING

We are providing you with these proxy materials in connection with the solicitation by the Board of Directors of Mueller Industries, Inc. (the “Company”) of proxies for our 2023 Annual Meeting of Stockholders (the “Annual Meeting”), which will be held at 8:00 A.M., Central time on Thursday, May 4, 2023, at our corporate headquarters located at 150 Schilling Boulevard, Collierville, Tennessee 38017, in the second floor conference room.

Notice of the availability of this Proxy Statement, together with the Company’s Annual Report for the fiscal year ended December 31, 2022, is first being mailed to stockholders on or about March 23, 2023. Pursuant to rules adopted by the Securities and Exchange Commission, the Company is providing access to its proxy materials over the Internet at http://www.proxyvote.com.

When a proxy card is returned properly signed, the shares represented thereby will be voted in accordance with the stockholder’s directions appearing on the card. If the proxy card is signed and returned without directions, the shares will be voted for the nominees named herein and in accordance with the recommendations of the Company’s Board of Directors as set forth herein. A stockholder giving a proxy may revoke it at any time before it is voted at the Annual Meeting by giving written notice to the secretary of the Annual Meeting or by casting a ballot at the Annual Meeting. Votes cast by proxy or in person at the Annual Meeting will be tabulated by election inspectors appointed for the Annual Meeting. The election inspectors will also determine whether a quorum is present. The holders of a majority of the shares of common stock, $.01 par value per share (“Common Stock”), outstanding and entitled to vote who are present either in person or represented by proxy will constitute a quorum for the Annual Meeting.

The cost of soliciting proxies will be borne by the Company. In addition to solicitation by mail, directors, officers and employees of the Company may solicit proxies by telephone or otherwise. The Company will reimburse brokers or other persons holding stock in their names or in the names of their nominees for their charges and expenses in forwarding proxies and proxy material to the beneficial owners of such stock.

Record Date: March 13, 2023

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 7

Back to Contents |

— | ## 2022 PERFORMANCE

(1) | Adjusted operating income and adjusted EBITDA are non-GAAP financial measures which exclude certain items in order to better reflect results of on-going operations. See Appendix A for a reconciliation of non-GAAP financial measures to our results reported under GAAP.

— | ## ANNUAL MEETING OF STOCKHOLDERS

Date and Time: | Place: | Record Date:
Thursday, May 4, 2023 | 150 Schilling Boulevard | March 13, 2023
8:00 A.M., Central Time | Second Floor |
| Collierville, Tennessee 38017 |

— | ## AGENDA AND VOTING MATTERS

We are asking you to vote on the following proposals at the Annual Meeting:

Proposal | Board Recommendation | Page Reference
Proposal 1 – Election of Directors | FOR each nominee | 11
Proposal 2 – Approval of Auditor | FOR | 21
Proposal 3 – Say-on-Pay | FOR | 23
Proposal 4 – Say-on-Frequency | EVERY YEAR | 44

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 8

Back to Contents |

— | ## PROPOSAL 1: ELECTION OF DIRECTORS

The following table provides summary information about each director nominee. The Board of Directors believes that these nominees reflect an appropriate composition to effectively oversee the performance of management in the execution of the Company’s strategy, and as such, recommends a vote “for” each of the eight nominees listed below.

Name |  | Age |  | Director Since |  | Primary Occupation |  | Independence |  | Committee Memberships |  | Current Other Public Boards
Gregory L. Christopher Chairman and Chief Executive Officer |  | 61 |  | 2010 |  | Chief Executive Officer, Mueller Industries, Inc. |  | N |  | None |  | None
Elizabeth Donovan |  | 70 |  | 2019 |  | Retired, Chicago Board Options Exchange |  | Y |  | N* |  | None
William C. Drummond |  | 69 |  | 2022 |  | Principal, The Marston Group PLC |  | Y |  | A |  | None
Gary S. Gladstein |  | 78 |  | 2000 |  | Private Investor, Consultant |  | Y |  | C |  | None
Scott J. Goldman |  | 70 |  | 2008 |  | Chief Executive Officer, TextPower, Inc. |  | Y |  | C*, N |  | None
John B. Hansen |  | 76 |  | 2014 |  | Retired Executive Vice President, Mueller Industries, Inc. |  | Y |  | A*, N |  | None
Terry Hermanson Lead Independent Director since January 1, 2019 |  | 80 |  | 2003 |  | Principal, Mr. Christmas Incorporated |  | Y |  | C |  | None
Charles P. Herzog, Jr. |  | 65 |  | 2017 |  | Co-Founder and Principal, Atadex LLC & Vypin LLC |  | Y |  | A |  | None

A = Audit Committee

C = Compensation and Personnel Development Committee

N = Nominating and Governance Committee

* = Chair

Director Experiences and Skills |  |  |  |
| Financial Reporting |  | International Business |  | Manufacturing/Industries
| Supply Chain/Logistics |  | Technology/Cybersecurity |  | Equity Markets/Securities

— | ## PROPOSAL 2: RATIFICATION OF INDEPENDENT AUDITORS

We ask our stockholders to approve the selection of Ernst & Young LLP (“EY”) as our independent registered public accounting firm for the fiscal year ending December 31, 2022. Below is summary information about fees paid to EY for services provided in 2022 and 2021:

|  | 2022 |  |  | 2021 |
Audit Fees |  | $ | 3,298,330 |  |  | $ | 3,096,955 |
Audit-Related Fees |  | $ | 53,000 |  |  | $ | 74,000 |
Tax Fees |  | $ | 617,000 |  |  | $ | 660,000 |
All Other Fees |  |  | — |  |  |  | — |
|  | $ | 3,968,330 |  |  | $ | 3,830,955 |

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 9

Back to Contents |

— | ## PROPOSAL 3: ADVISORY VOTE TO APPROVE COMPENSATION OF NEOs

We are seeking your advisory vote to approve the compensation of our named executive officers as disclosed in this proxy statement. Our executive officers are responsible for achieving long-term strategic goals, and as such, their compensation is weighted toward rewarding long-term value creation for stockholders. Beyond base salary and traditional benefits, we maintain an annual cash incentive compensation program that is driven by a pay-for-performance philosophy and based on ambitious performance targets both at the Company and business line levels. We also maintain a long-term equity incentive compensation program, the primary objective of which is to motivate and retain top talent — a particularly vital goal given the uniquely competitive industry in which we operate. Accordingly, we utilize a combination of extended time-vesting schedules and performance-based vesting criteria to encourage executives and associates alike to enjoy lengthy tenures at the Company, develop industry expertise and relationships, ensure sound transition and succession planning, and drive our long-term success.

Our emphasis on a pay for performance compensation model is best illustrated in the following charts, which show that in 2022, a substantial majority of our NEOs’ overall compensation — consisting of target long-term and short-term incentive compensation combined — is performance-based or “at risk.”

— | ## PROPOSAL 4: ADVISORY VOTE ON THE FREQUENCY OF FUTURE STOCKHOLDER ADVISORY VOTES TO APPROVE NEO COMPENSATION

We are seeking your advisory vote on the frequency of future stockholder advisory votes to approve the compensation of our NEOs. The Board of Directors believes that an annual advisory vote on NEO compensation will give the Company’s stockholders the best opportunity to provide the Company with direct input each year on the Company’s compensation philosophy, policies and practices as disclosed in the Proxy Statement. Although the stockholder vote on the frequency of advisory votes on NEO compensation is not binding on the Board of Directors or the Company, the Board of Directors and the Compensation and Personnel Development Committee will review the voting results in determining the frequency of future votes.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 10

Back to Contents |

| # PROPOSAL 1 ELECTION OF DIRECTORS

Eight director nominees will be elected at the Annual Meeting, each to serve until the next annual meeting (tentatively scheduled for May 9, 2024), or until the election and qualification of their successors. At the recommendation of the Nominating and Governance Committee, the Board has nominated the following persons to serve as directors for the term beginning at the Annual Meeting: Gregory L. Christopher, Elizabeth Donovan, William C. Drummond, Gary S. Gladstein, Scott J. Goldman, John B. Hansen, Terry Hermanson and Charles P. Herzog, Jr. (collectively, the “Nominees”).

Directors are elected by a plurality of the votes cast, which means that the individuals who receive the greatest number of votes cast “For” are elected as directors up to the maximum number of directors to be chosen at the Annual Meeting. Consequently, any shares not voted “For” a particular director (whether as a result of a direction to withhold or a broker non-vote) will not be counted in such director’s favor.

The Board of Directors has adopted a majority vote policy in uncontested elections. An uncontested election means any stockholders meeting called for purposes of electing any director(s) in which (i) the number of director nominees for election is equal to the number of positions on the Board of Directors to be filled through the election to be conducted at such meeting, and/or (ii) proxies are being solicited for the election of directors solely by the Company.

The election of directors solicited by this Proxy Statement is an uncontested election. In the event that a nominee for election in an uncontested election receives a greater number of votes “Withheld” for his or her election than votes “For” such election, such nominee will tender an irrevocable resignation to the Nominating and Governance Committee, which will decide whether to accept or reject the resignation and submit such recommendation for prompt consideration by the Board of Directors no later than ninety (90) days following the uncontested election.

— | ## SELECTING NOMINEES TO THE BOARD

The Nominating and Governance Committee considers, among other things, the following criteria in selecting and reviewing director nominees:

• | personal and professional integrity, and the highest ethical standards;
• | skills, business experience and industry knowledge useful to the oversight of the Company based on the perceived needs of the Company and the Board at any given time;
• | the ability and willingness to devote the required amount of time to the Company’s affairs, including attendance at Board and committee meetings;
• | the interest, capacity and willingness to serve the long-term interests of the Company; and
• | the lack of any personal or professional relationships that would adversely affect a candidate’s ability to serve the best interests of the Company and its stockholders.

The Nominating and Governance Committee also assesses the contributions of the Company’s incumbent directors in connection with their potential re-nomination. In identifying and recommending director nominees, the Committee members take into account such factors as they determine appropriate, including recommendations made by the Board of Directors.

As reflected in its formal charter, the Nominating and Governance Committee considers the diversity of the Company’s Board and employees to be a tremendous asset. The Company is committed to maintaining a highly qualified and diverse Board, and as such, all candidates are considered regardless of their age, gender, race, color of skin, ethnic origin, political affiliation, religious preference, sexual orientation, country of origin, physical handicaps or any other category.

Through Charter amendments enacted in February, the Nominating and Governance Committee reaffirmed its commitment to including, in each search, qualified candidates who reflect diverse backgrounds, including diversity of gender and race. Moreover, the Committee will consider all candidates irrespective of whether their backgrounds includes work in the corporate, academic, government or non-profit sectors. These efforts to promote diversity are assessed annually to assure that the Board contains a balanced and effective mix of individuals capable of advancing the Company’s long-term interests.

The Nominating and Governance Committee does not consider individuals nominated by stockholders for election to the Board. The Board believes that this is an appropriate policy because the Company’s Restated Certificate of Incorporation and Amended and Restated By-laws (“Bylaws”) allow a qualifying stockholder to nominate an individual for election to the Board, said nomination of which can be brought directly before a meeting of stockholders. Procedures and deadlines for doing so are set forth in the Company’s Bylaws, the applicable provisions of which may be obtained, without charge, on the Company’s website or upon written request to the Secretary of the Company at the address set forth herein.

The presiding officer of the meeting may refuse to acknowledge the nomination of any person not made in compliance with the procedures set forth in the Bylaws. See “Stockholder Nominations for Board Membership and Other Proposals for 2023 Annual Meeting.”

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— | ## DIRECTOR NOMINEE BIOGRAPHIES

| THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT STOCKHOLDERS VOTE THEIR SHARES FOR EACH OF THE NOMINEES.

GREGORY L. CHRISTOPHER
Chairman of the Board and Chief Executive Officer
Age 61 Director Since 2010 | Mr. Christopher has served as Chairman of the Board of Directors since January 1, 2016. Mr. Christopher has served as Chief Executive Officer of the Company since October 30, 2008. Prior to that, he served as the Company’s Chief Operating Officer and President of the Standard Products Division.

ELIZABETH DONOVAN
Age 70 Director Since 2019 | Ms. Donovan was an early member, and at the time, one of the few women on the Chicago Board Options Exchange. She subsequently became an independent broker representing major institutional options orders and has been retired from employment for more than five years.
| Ms. Donovan was nominated to serve as a director of the Company because of her knowledge of market dynamics and institutional trading practices, knowledge acquired through her 18-year tenure as a fiduciary representative amidst an array of market conditions. She currently serves as Chairwoman of the Nominating and Governance Committee.

WILLIAM C. DRUMMOND
Age 69 Director Since 2022 | Mr. Drummond, a Certified Public Accountant, has served as a Principal of The Marston Group PLC, a CPA and advisory firm, since 2013. Prior to that, he was a Partner at Ernst & Young LLP. Mr. Drummond was nominated to serve as a director of the Company because of his strength in the area of accounting, combined with his financial acumen, and his knowledge of and experience with tax and audit matters. He currently serves on the Audit Committee.

GARY S. GLADSTEIN
Age 78 Director Since 2000 | Mr. Gladstein served as Chairman of the Board of Directors of the Company from 2013 to 2015, and was previously a director of the Company from 1990 to 1994. Mr. Gladstein is currently an independent investor and consultant. From the beginning of 2000 to August 31, 2004, Mr. Gladstein was a Senior Consultant at Soros Fund Management. He was a partner and Chief Operating Officer at Soros Fund Management from 1985 until his retirement at the end of 1999. During the past five years, Mr. Gladstein also served as a director of Inversiones y Representaciones Sociedad Anónima, Darien Rowayton Bank and a number of private companies. Mr. Gladstein was nominated to serve as a director of the Company because of his financial and accounting expertise, combined with his years of experience providing strategic advisory services to complex organizations. In addition, having been a member of the compensation, audit and other committees of public company boards, Mr. Gladstein is deeply familiar with corporate governance issues. He currently serves on the Compensation and Personnel Development Committee.

SCOTT J. GOLDMAN
Age 70 Director Since 2008 | For 12 years, Mr. Goldman has served as Chief Executive Officer of TextPower, Inc., which provides software-integrated text messaging alerts to utilities, municipalities and courts. He holds multiple patents for cybersecurity-related authentication technologies and speaks, writes and educates executives about cybersecurity matters. He has assisted Fortune 1000 companies in licensing, developing, building and operating wireless technologies and systems around the world. Mr. Goldman was nominated to serve as a director of the Company because of his extensive experience with cybersecurity, advanced technologies and global market strategies. He currently serves as Chairman of the Compensation and Personnel Development Committee, and is also a member of the Nominating and Governance Committee.

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JOHN B. HANSEN
Age 76 Director Since 2014 | Prior to his retirement as an Executive Vice President of the Company in 2014, Mr. Hansen served the Company in a variety of roles, including President-Plumbing Business, President-Manufacturing Operations and Senior Vice President – Strategy and Industry Relations. Mr. Hansen was nominated to serve as a director because of his extensive industry experience and deep knowledge of the Company, its full array of operations and the global markets it serves. He currently serves as Chairman of the Audit Committee, and is also a member of the Nominating and Governance Committee.

TERRY HERMANSON
Lead Independent Director
Age 80 Director Since 2003 | Mr. Hermanson has been the principal of Mr. Christmas Incorporated, a wholesale merchandising company, since 1978, and presently serves as its Chairman. Mr. Hermanson was nominated to serve as a director of the Company because of his extensive experience in manufacturing, importing, sales, international business and strategic planning. In addition to serving as Lead Independent Director, Mr. Hermanson is also a member of the Compensation and Personnel Development Committee.

CHARLES P. HERZOG, JR.
Age 65 Director Since 2017 | Since 2010, Mr. Herzog has been a principal at Atadex LLC, a firm he co-founded. He co-founded a second firm, Vypin LLC, in 2016. Atadex and Vypin provide advanced technological and data delivery solutions to support the transportation logistics industry. Mr. Herzog was nominated to serve as a director of the Company based on his extensive knowledge of the transportation logistics industry, and the developing technologies that support it. He currently serves as a member of the Audit Committee.

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| # CORPORATE GOVERNANCE

## — GOVERNANCE HIGHLIGHTS

Our Board of Directors’ commitment to sound governance practices is embodied in its Corporate Governance Guidelines, which are periodically reviewed in light of evolving trends, regulations and related disclosure requirements. These practices include the following:

Board Independence | • Seven of our eight director nominees are independent. • Our CEO is our only management director.
Board Composition | • All Board members are elected annually. • The Board annually evaluates its performance and the performance of its committees.
Board Committees | • We have three committees: Audit; Compensation and Personnel Development; and Nominating and Governance. • All committees are composed entirely of independent directors.
Leadership Structure | • Our Board has a Lead Independent Director who liaises between our CEO & Chairman and other directors. • Among other duties, our Lead Independent Director chairs executive sessions of our independent directors.
Environmental, Social & Governance (ESG) Oversight | • Our Nominating & Governance Committee oversees our ESG program, and delegates such responsibilities to other committees, subcommittees or the full Board as necessary.
Open Communication | • We encourage open communication and strong working relationships among the Lead Independent Director, Chairman and other directors. • Our directors have direct access to management.
Stock Ownership | • Our directors are subject to stock ownership requirements.

## — DIRECTOR INDEPENDENCE

In order for a director to qualify as “independent,” our Board of Directors must affirmatively determine, consistent with NYSE rules, that the director has no material relationship with the Company that would impair the director’s independence. Our Board of Directors undertook its annual review of director independence in February 2023. In applying the NYSE standards for independence, and after considering all relevant facts and circumstances, the Board of Directors has affirmatively determined that all directors, with the exception of Mr. Christopher, are “independent.” In the course of the Board of Directors’ determination regarding the independence of each non-management director, the Board considered for:

• | Mr. Drummond, the fact that although he was previously a partner with Ernst & Young LLP (“EY”), the Company’s independent auditing firm, he retired from EY in 2012, and the Company has received written confirmation from EY that (i) all independence issues related to his service on the Company’s Board of Directors have been resolved, (ii) Mr. Drummond would not be receiving any unfunded retirement benefits from EY, and (iii) all other non-pension related financial ties and firm amenities had been settled.
• | Mr. Hansen, the fact that while he was previously an executive officer of the Company (until his retirement on April 30, 2014), more than five years have lapsed since the termination of his employment relationship with the Company.

## — BOARD OF DIRECTORS AND ITS COMMITTEES

The Board of Directors and its committees meet regularly throughout the year, and may also hold special meetings and act by written consent from time to time. In 2022, the Board of Directors held four regularly scheduled meetings. During this time, our directors attended 100% of our Board of Directors meetings and meetings of the committees on which they served.

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Three standing committees have been convened to assist the Board of Directors with various functions: the Audit Committee, the Compensation and Personnel Development Committee, and the Nominating and Governance Committee. Each committee operates pursuant to a formal charter that may be obtained, free of charge, at the Company’s website at www.muellerindustries.com, or by requesting a print copy from our Corporate Secretary at the address listed herein.

AUDIT COMMITTEE
Current Members: John B. Hansen (Chairman) William C. Drummond Charles P. Herzog, Jr. Meetings in 2022: 6 | The Audit Committee assists the Board of Directors in fulfilling its oversight functions with respect to matters involving financial reporting, independent and internal audit processes, disclosure controls and procedures, internal controls over financial reporting, related-party transactions, employee complaints, cybersecurity and risk management. In particular, the Audit Committee is responsible for: • appointing, retaining, compensating and evaluating the Company’s independent auditors; • reviewing and discussing with management and the independent auditors the Company’s annual and quarterly financial statements, and accounting policies; • reviewing the effectiveness of the Company’s internal audit procedures and personnel; • reviewing, evaluating and assessing the Company’s risk management programs, including with respect to cybersecurity; • reviewing the Company’s policies and procedures for compliance with disclosure requirements concerning conflicts of interest and the prevention of unethical, questionable or illegal payments; and • making such other reports and recommendations to the Board of Directors as it deems appropriate. The Board of Directors has determined that each Audit Committee member meets the standards for independence required by the New York Stock Exchange (the “NYSE”) and applicable SEC rules. Moreover, it has determined (i) that all members of the Audit Committee are financially literate; and (ii) that William C. Drummond possesses accounting and related financial management expertise within the meaning of the listing standards of the NYSE, and therefore is an audit committee financial expert within the meaning of applicable SEC rules. In accordance with the rules and regulations of the SEC, the above paragraph regarding the independence of the members of the Audit Committee shall not be deemed to be “soliciting material” or to be “filed” with the SEC or subject to Regulation 14A or 14C of the Exchange Act or to the liabilities of Section 18 of the Exchange Act and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, notwithstanding any general incorporation by reference of this Proxy Statement into any other filed document.

COMPENSATION AND PERSONNEL DEVELOPMENT COMMITTEE
Current Members: Scott J. Goldman (Chairman) Gary S. Gladstein Terry Hermanson Meetings in 2022: 5 | Previously known as the Compensation and Stock Option Committee, the Compensation and Personnel Development Committee was re-named in February 2023 to reflect its oversight responsibility with respect to various human capital related issues. Pursuant to its recently amended charter, the Committee is responsible for, among other things: • providing assistance to the Board of Directors in discharging the Board of Directors’ responsibilities related to executive and employee compensation and benefits; management organization; employee recruitment, engagement and retention; training and talent development; performance evaluation; succession planning; workplace culture; and employee health and safety; and • making such recommendations to the Board of Directors as it deems appropriate.

NOMINATING AND GOVERNANCE COMMITTEE
Current Members: Elizabeth Donovan (Chairwoman) Scott J. Goldman John B. Hansen Meetings in 2022: 3 | The Nominating and Governance Committee is responsible for: • recommending director nominees to the Board of Directors; • recommending committee assignments and responsibilities to the Board of Directors; • overseeing the evaluation of the Board of Directors and management effectiveness; • developing and recommending to the Board of Directors corporate governance guidelines; • reviewing the Company’s implementation of procedures for identifying, assessing, monitoring, managing and reporting on the environmental, social and governance (ESG) risks and opportunities related to the Company’s business; and • delegating responsibilities to other Board Committees, subcommittees or the full Board as it deems appropriate, including with respect to ESG matters.

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## — BOARD’S ROLE IN RISK OVERSIGHT

The Board of Directors is actively involved in oversight of risks that could affect the Company. These efforts can be summarized as follows:

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## — STANDARDS OF CONDUCT

The Board of Directors has adopted various policies, including a comprehensive set of Corporate Governance Guidelines, by which the Company is governed. These policies are designed to promote sound corporate governance and prudent stewardship of the Company, both by the Board of Directors and management.

### Anti-Pledging Policy

The Corporate Governance Guidelines include amendments adopted in February 2020 that prohibit the future pledging of the Company’s common stock as security under any obligation by our directors and executive officers.

### Insider Trading and Anti-Hedging Policy

The Company maintains a policy (which was recently updated in February 2023) that mandates compliance with insider trading laws and institutes safeguards to mitigate the risk of insider trading. Further, the Corporate Governance Guidelines prohibit any director, officer or employee of the Company from engaging in short sales, transactions in derivative securities (including put and call options), or other forms of hedging and monetization transactions, such as zero-cost collars, equity swaps, exchange funds and forward sale contracts, that allow the holder to limit or eliminate the risk of a decrease in the value of the Company’s securities.

### Clawback Policy

Under the Corporate Governance Guidelines, if the Company is required to restate its financial results due to material noncompliance with financial reporting requirements under the securities laws as a result of an executive’s (i.e., a President or Vice President level officer’s) willful, knowing or intentional misconduct or gross negligence (as determined by the Compensation and Personnel Development Committee), the Company may take action to recoup from the executive all or any portion of an incentive award received by the executive, the amount of which had been determined in whole or in part upon specific performance targets relating to the restated financial results. In such an event, the Company shall be entitled to recoup up to the amount, if any, by which the incentive award actually received by the executive exceeded the payment that would have been received based on the restated financial results, as determined by the Compensation and Personnel Development Committee. The Company’s right of recoupment pursuant to this policy applies to incentive awards received during the three-year period preceding the date on which the Company is required to prepare the restatement, based on the determination of the Company’s independent registered public accounting firm.

### Code of Business Conduct and Ethics

The Company has adopted a Code of Business Conduct and Ethics, which is designed to help officers, directors and employees resolve ethical issues in an increasingly complex business environment. The Code of Business Conduct and Ethics is applicable to all of the Company’s officers, directors and employees, including the Company’s principal executive officer, principal financial officer, principal accounting officer or controller and other persons performing similar functions. The Code of Business Conduct and Ethics covers topics, including but not limited to, conflicts of interest, confidentiality of information and compliance with laws and regulations.

### Director Responsibilities

It is the duty of the Board of Directors to serve as prudent fiduciaries for stockholders and to oversee the management of the Company’s business. Accordingly, the Corporate Governance Guidelines include specifications for director qualification and responsibility, attendance, access to officers and employees, compensation, orientation, continuing education and self-evaluation.

The Company’s policy is that all members of the Board of Directors attend annual meetings of stockholders, except where the failure to attend is due to unavoidable circumstances or conflicts discussed in advance with the Chairman of the Board. Because of travel restrictions and safety concerns related to the COVID-19 pandemic, the Chairman was present but excused all non-management members of the Board of Directors from attending the 2022 annual meeting of stockholders in person.

Where to Find Our Key Governance Policies: The Corporate Governance Guidelines and Code of Business Conduct and Ethics can be obtained free of charge from the Company’s website at www.muellerindustries.com, or may be requested in print by any stockholder.

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## — COMMUNICATION WITH THE BOARD OF DIRECTORS

Any stockholder or interested party who wishes to communicate with the Board of Directors, or specific individual directors, including the non-management directors as a group, may do so by directing a written request addressed to such directors or director in care of the Chairman of the Nominating and Governance Committee, Mueller Industries, Inc., 150 Schilling Boulevard, Suite 100, Collierville, Tennessee 38017. Communication(s) directed to the Chairman will be relayed to him, except to the extent that it is deemed unnecessary or inappropriate to do so pursuant to the procedures established by a majority of the independent directors. Communications directed to non-management directors will be relayed to the intended director except to the extent that doing so would be contrary to the instructions of the non-management directors. Any communication so withheld will nevertheless be made available to any non-management director who wishes to review it.

## — RELATED PARTY TRANSACTIONS

Related party transactions may present potential or actual conflicts of interest, and create the appearance that Company decisions are based on considerations other than the best interests of the Company and its stockholders. Management carefully reviews all proposed related party transactions (if any), other than routine banking transactions, to determine if the transaction is on terms comparable to those that could be obtained in an arms-length transaction with an unrelated third party. Management reports to the Audit Committee, and then to the Board of Directors on all proposed material related party transactions. Upon the presentation of a proposed related party transaction to the Audit Committee or the Board of Directors, the related party is excused from participation in discussion and voting on the matter.

## — ENVIRONMENTAL, SOCIAL AND GOVERNANCE (ESG) RISK MANAGEMENT AND SUSTAINABILITY

The Company assesses and manages environmental, social and governance (“ESG”) considerations that may be material to the long-term sustainability of our business. Pursuant to its charter, the Nominating and Governance Committee is responsible for reviewing and discussing with management the Company’s implementation of procedures for identifying, assessing, monitoring, managing and reporting on the ESG and sustainability risks and opportunities related to the Company’s business. In so doing, it may form subcommittees or delegate responsibility to other Board Committees or the full Board of Directors as it deems appropriate. Among other matters, we focus on such issues as workplace health and safety, environmental stewardship, business ethics and compliance, supply chain management and the development of human capital. We also focus outwardly on the communities in which we operate, including through a foundation that makes charitable contributions to various causes and organizations. ESG-related risks and opportunities are integral to our strategic decision-making. Such matters are addressed by senior management and subject to the oversight of the Nominating and Governance Committee and the full Board of Directors. The Company also prioritizes the enhanced reporting and disclosure of the ESG-related risks and opportunities relating to its business and associated metrics. Since 2021, the Company has published an annual Sustainability Report. The report is available on the Company’s website.

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| # 2022 DIRECTOR COMPENSATION

## — ELEMENTS OF DIRECTOR COMPENSATION

Our non-employee director compensation for 2022 was awarded in a combination of cash and equity, as shown below:*

Annual fee for the Lead Independent Director. | For serving as Lead Independent Director, Mr. Hermanson received an annual fee of $90,000.
Annual fee for other directors | All other non-employee directors received an annual fee of $64,000.
Discretionary Bonus | All non-employee directors received a discretionary bonus of $10,000.
Meeting fees | • $3,000 per full Board meeting attended • $3,000 per Audit Committee meeting attended • $1,000 per Compensation and Personnel Development Committee, Nominating and Governance Committee or special meeting attended
Annual fees for Committee Chairs | • $25,000 for the Audit Committee Chair • $7,000 each for the chairs of the Compensation and Personnel Development and Nominating and Governance Committees
Annual equity award | • All non-employee directors were granted 3,000 shares of restricted stock.

*In his capacity as Chairman of the Board of Directors, Mr. Christopher received neither a retainer nor any meeting fees.

In addition, each director received reimbursement for such director’s expenses incurred in connection with any such Board or Committee meeting, and each Committee fee was paid whether or not such committee meeting was held in conjunction with a Board of Directors meeting.

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## — 2022 NON-EMPLOYEE DIRECTOR COMPENSATION

The table below summarizes the total compensation we paid to our non-employee directors for the fiscal year ended December 31, 2022.

Name | Fees Earned or Paid in Cash ($) |  | Stock Awards ($) | (1) | Other Compensation ($) | (2) | Total ($)
Elizabeth Donovan | 85,000 |  | 167,040 |  | 11,280 |  | 263,320
William C. Drummond | 94,000 |  | 167,040 |  | 10,000 |  | 271,040
Gennaro J. Fulvio(3) | 37,000 |  | — |  | 1,280 |  | 38,280
Gary S. Gladstein | 81,000 |  | 167,040 |  | 11,280 |  | 259,320
Scott J. Goldman | 94,000 |  | 167,040 |  | 11,280 |  | 272,320
John B. Hansen | 121,000 |  | 167,040 |  | 11,280 |  | 299,320
Terry Hermanson | 105,000 |  | 167,040 |  | 11,280 |  | 283,320
Charles P. Herzog, Jr. | 90,000 |  | 167,040 |  | 11,280 |  | 268,320

(1) | Represents the aggregate grant date fair value of awards granted to our directors in 2022, determined under Financial Accounting Standards Board Accounting Standards Codification 718. For information on the valuation assumptions with respect to awards made, refer to Note 17 - Stock-Based Compensation to the Company’s Consolidated Financial Statements filed with its Annual Report on Form 10-K for the fiscal year ended December 31, 2022. The amounts above reflect the Company’s aggregate expense for these awards and do not necessarily correspond to the actual value that will be recognized by the directors.
(2) | Other cash compensation included (i) a $10,000 cash award provided to our non-employee directors in recognition of their support and contributions to the Company’s exceptional financial performance in 2022, and (ii) $1,280 in cash dividends.
(3) | Mr. Fulvio retired from the Board of Directors effective May 5, 2022.

## — STOCK OWNERSHIP POLICY FOR DIRECTORS

To further align the Company’s goal of aligning directors’ economic interests with those of stockholders, the Company has adopted stock ownership guidelines for its non-employee directors recommending that they hold equity interests of the Company (including vested and unvested interests, provided that with respect to options, only vested options that are exercisable within 60 days of the applicable measurement date will be counted) with a value equal to three times the annual cash director fee payable to each such director. All directors are expected to comply with the stock ownership guidelines within five years of being elected to the Board of Directors, and current directors should comply as soon as practicable. Director compliance with the stock ownership guidelines is monitored on an ongoing basis by the Company’s General Counsel.

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| # PROPOSAL 2 APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Audit Committee has reappointed Ernst & Young LLP (“EY”) to audit and certify the Company’s financial statements for the fiscal year ended December 31, 2022, subject to ratification by the Company’s stockholders, which requires the affirmative vote of a majority of the outstanding shares of the Company present in person or by proxy at the Annual Meeting. If the appointment of EY is not so ratified, the Audit Committee will reconsider its action and will appoint auditors for the 2023 fiscal year without further stockholder action. Notwithstanding, the Audit Committee may at any time in the future in its discretion reconsider the appointment without submitting the matter to a vote of stockholders. Representatives of EY are expected to attend the Annual Meeting to answer questions and make a statement if they so choose.

Fees for EY’s audit and other services for each of the two fiscal years ended December 31, 2022 and December 25, 2021 are set forth below:

|  | 2022 |  |  | 2021 |
Audit Fees (professional services rendered for the audit of (i) the Company’s consolidated annual and interim/quarterly financial statements, and (ii) internal controls over financial reporting) |  | $ | 3,298,330 |  |  | $ | 3,096,955 |
Audit-Related Fees (assurance and other services, including international accounting and reporting compliance) |  | $ | 53,000 |  |  | $ | 74,000 |
Tax Fees (tax compliance, advice and planning) |  | $ | 617,000 |  |  | $ | 660,000 |
All Other Fees |  |  | — |  |  |  | — |
|  | $ | 3,968,330 |  |  | $ | 3,830,955 |

The Audit Committee’s policy is to pre-approve all audit and non-audit services provided by the independent auditors. Pre-approval is generally provided for up to one year, and any such pre-approval is detailed as to the particular service or category of services. The Audit Committee has delegated pre-approval authority to its Chairman when expedition of services is necessary. The independent auditors and management are required periodically to report to the full Audit Committee regarding the extent of services provided by the independent auditors in accordance with this pre-approval, and the fees for the services performed to date. All of the services provided by the independent auditors during fiscal years 2022 and 2021, respectively, under the categories Audit Fees, Audit-Related Fees, Tax Fees and All Other Fees described above were pre-approved.

| THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT STOCKHOLDERS VOTE THEIR SHARES FOR THE APPROVAL OF ERNST & YOUNG LLP AS THE COMPANY’S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM.

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| # REPORT OF THE AUDIT COMMITTEE OF THE BOARD OF DIRECTORS

The Audit Committee oversees the Company’s financial reporting process on behalf of the Board of Directors. Management has the primary responsibility for the financial statements and the reporting process, including the systems of internal controls. In fulfilling its oversight responsibilities, the Audit Committee reviewed the audited financial statements in the Annual Report on Form 10-K with management, including a discussion of the quality, not just the acceptability, of the accounting principles, the reasonableness of significant judgments and the clarity of disclosures in the financial statements.

The Audit Committee reviewed with the independent auditors, who are responsible for expressing an opinion on the conformity of those audited financial statements with generally accepted accounting principles, their judgments as to the quality, not just the acceptability, of the Company’s accounting principles and such other matters as are required to be discussed with the Audit Committee under Public Company Accounting Oversight Board’s (PCAOB) Auditing Standard No. 1301. In addition, the Audit Committee discussed with the independent auditors the auditors’ independence from management and the Company, including the matters in the written disclosures required by Public Company Accounting Oversight Board’s Rule 3526, and considered the compatibility of non-audit services provided by the independent auditors with the auditor’s independence.

The Audit Committee discussed with the Company’s internal and independent auditors the overall scope and plans for their respective audits. The Audit Committee meets with the internal and independent auditors, with and without management present, to discuss the results of their examinations, their evaluations of the Company’s internal controls, and the overall quality of the Company’s financial reporting.

In reliance on the reviews and discussions referred to above, the Audit Committee recommended to the Board of Directors (and the Board of Directors has approved) that the audited financial statements be included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 for filing with the SEC. The Audit Committee and the Board has re-appointed, subject to stockholder approval, Ernst & Young LLP, independent auditors, to audit the consolidated financial statements of the Company for the fiscal year ending December 30, 2023.

The Audit Committee is governed by a formal charter which can be accessed from the Company’s website at www.muellerindustries.com, or may be requested in print by any stockholder. The members of the Audit Committee are considered independent because they satisfy the independence requirements for Board members prescribed by the NYSE listing standards and Rule 10A-3 of the Exchange Act.

John B. Hansen, Chairman
William C. Drummond
Charles P. Herzog, Jr.

(1) | This Section is not “soliciting material,” is not deemed “filed” with the SEC and is not to be incorporated by reference in any filing of the Company under the Securities Act or the Exchange Act, whether made before or after the date hereof, and irrespective of any general incorporation language in any such filing.

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| # PROPOSAL 3 ADVISORY VOTE ON APPROVAL OF THE COMPENSATION OF THE COMPANY’S NAMED EXECUTIVE OFFICERS

In accordance with Section 14A of the Exchange Act, stockholders are being asked to vote on an advisory, non-binding basis, on the compensation of the Company’s named executive officers. Specifically, the following resolution will be submitted for a stockholder vote at the Annual Meeting, the approval of which will require the affirmative vote of a majority of the outstanding shares of the Company present in person or by proxy at the Annual Meeting and entitled to vote thereon:

“RESOLVED, that the stockholders of the Company approve, on an advisory basis, the compensation of the Company’s named executive officers listed in the 2022 Summary Compensation Table included in the proxy statement for the 2023 Annual Meeting, as such compensation is disclosed pursuant to Item 402 of Regulation S-K in this proxy statement under the section titled “Compensation Discussion and Analysis,” as well as the compensation tables and other narrative executive compensation disclosures thereafter.”

Although the stockholder vote is not binding on either the Board of Directors or the Company, the views of stockholders on these matters are valued and will be taken into account in addressing future compensation policies and decisions.

The Company’s Compensation and Personnel Development Committee is comprised of knowledgeable and experienced independent directors, who are committed to regular review and effective oversight of our compensation programs. The Company’s executive compensation program is grounded in a pay for performance philosophy, and accordingly, has been designed to motivate the Company’s key employees to achieve the Company’s strategic and financial goals, and to support the creation of long-term value for stockholders. Moreover, given the particularly competitive markets in which we operate and the nature of our business, a principal goal underlying the Company’s long-term incentive compensation program specifically is the long-term retention and motivation of critical executives and business leaders, to ensure that the Company will continue to benefit from an exceptionally strong leadership team that will be well positioned to develop sound transition and succession plans for its key executives as such needs arise in the future. The Company’s success depends upon their leadership, judgment and experience, and as such, our compensation program is designed to promote their enduring commitment to the Company. We encourage stockholders to read the Executive Compensation section of this proxy statement, including the Compensation Discussion and Analysis (CD&A) and compensation tables, for a more detailed discussion of the Company’s compensation programs and policies, and how they are appropriate and effective in promoting growth, creating value, and retaining key members of our team.

| THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT STOCKHOLDERS VOTE THEIR SHARES FOR THE APPROVAL, ON AN ADVISORY BASIS, OF THE COMPENSATION OF THE COMPANY’S NAMED EXECUTIVE OFFICERS.

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| # COMPENSATION DISCUSSION AND ANALYSIS TABLE OF CONTENTS

| EXECUTIVE SUMMARY | 24 |
| DETERMINATION OF EXECUTIVE COMPENSATION | 26 |
| ELEMENTS OF COMPENSATION | 26 |
| COMPENSATION RISK MANAGEMENT | 32 |

## — EXECUTIVE SUMMARY

This Compensation Discussion and Analysis (“CD&A”) provides an overview of how our named executive officers were compensated in 2022, as well as how this compensation furthers our established compensation philosophy and objectives.

### Our Named Executive Officers

The Company’s NEOs for fiscal year 2022 were:

### Our Compensation Philosophy and Guiding Principles

We believe in a pay for performance philosophy, such that a material portion of a named executive officer’s compensation is dependent upon both the short-term and long-term strategic and financial performance of the Company, considered in light of general economic and specific Company, industry, and competitive conditions. For 2022, we continued to reward named executive officers in a manner consistent with this philosophy by setting annual incentive targets based on the Company’s achievement of certain levels of operating income. While also rooted in a pay for performance philosophy, our long-term equity incentive compensation program is focused primarily on promoting retention of key executives and business leaders.

We believe that our long-term equity incentive compensation program serves as a valuable tool for recruitment and retention in our industry, where the competition for leadership talent is a foremost concern, as well as for ensuring sound and smooth succession and transition planning for our NEOs. Accordingly, we continued to grant equity awards, such that any long-term compensation opportunity will be directly tied to stock performance, and will only be received by key executives and business leaders who remain with and make long-term commitments to the Company’s success. The Compensation and Personnel Development Committee (hereinafter referred to as “the Committee” for purposes of this CD&A section) evaluates, on an annual basis, the overall structure and design of our program, and believes it has and continues to reflect the best balance of the Company’s priorities.

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### Our Compensation Practices At a Glance

Our pay and equity programs are designed to align executives’ interests with those of our stockholders, and to motivate and retain critical leaders. Below is a snapshot of our compensation practices:

WHAT WE DO |  | WHAT WE DON’T DO
| We maintain a fully independent Compensation and Personnel Development Committee. |  |  | We do not provide for single trigger severance upon a change in control.
| A higher percentage of our executives’ compensation is variable rather than fixed. |  |  | We do not permit gross-up payments to cover excise taxes.
| We utilize varying performance metrics under our short-term and long-term incentive plans. |  |  | We do not permit the pledging or hedging of our common stock.
| Our annual incentive program is based on earnings performance and capped for maximum payouts. |  |  | We do not support compensation programs or policies that reward material or excessive risk taking.
| Our equity awards include extended vesting schedules and performance-based criteria. |  |  | We do not maintain any supplemental executive retirement plans.
| We have a clawback policy applicable to all senior employees, including all President and Vice President level personnel. |  |  |

### 2022 Say-on-Pay Vote and Stockholder Engagement

At our 2022 Annual Meeting, we held our annual non-binding stockholder advisory vote on executive compensation. Approximately 89% of our shares voted (excluding abstentions and broker non-votes) were in favor of the compensation of our named executive officers as disclosed in the proxy statement for the 2022 Annual Meeting.

We were gratified by the level of stockholder support received in 2022 for our non-binding stockholder advisory vote on executive compensation, and believe it reflected our continued efforts to engage with stockholders on executive compensation matters. In 2022, we sought to further improve our pay-for-performance alignment by making 100% of the total equity awards granted to our Chief Executive Officer and other NEOs, performance-based.

As in prior years, the Committee will consider the outcome of this year’s stockholder advisory vote on executive compensation as it makes future compensation decisions.

### Independent Compensation Advisor

In July 2022, the Compensation and Personnel Development Committee retained Willis Towers Watson (“Willis Towers”) to (i) conduct an independent review of the total compensation of each of our NEOs based on peer group pay and industry survey data; and (ii) to independently advise the Committee on the performance-based special equity award grant to our CEO in November 2022, as discussed under “CEO Special Retention Grant” below, to facilitate the retention of our CEO in connection with the Company’s broader succession planning.

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During 2022, Willis Towers’ aggregate fees in connection with advice relating to executive compensation were $64,523. In addition to the engagement described above, Willis Towers provided insurance and health care related consulting services in 2022, and in so doing, billed the Company for fees totaling $194,641. Requests for non-executive compensation consulting services are made to Willis Towers by persons below the executive officer level within the departments of our Company that have a need for such services, and those requests are made without the involvement of our senior management or other personnel who may be associated with Willis Towers’ executive compensation consulting.

The Committee assessed the independence of Willis Towers and, based on this assessment, the Committee determined that, given the nature and scope of these additional services, these additional services did not raise a conflict of interest and did not impair Willis Towers’ ability to provide independent advice to the Committee concerning executive compensation matters.

## — DETERMINATION OF EXECUTIVE COMPENSATION

Guided by the philosophy and design outlined above, the Committee determines the compensation of our Chief Executive Officer. In turn, our Chief Executive Officer makes recommendations to the Committee regarding all components of our other NEOs’ compensation, including base salary, annual cash incentive compensation, and long-term equity incentive compensation. The Committee considers and acts upon those recommendations in setting the compensation of our other NEOs.

In determining compensation, we generally do not rely upon hierarchical or seniority-based levels or guidelines, nor did the Committee formally benchmark executive compensation (or any component thereof) against any particular peer group. Instead, we utilize a more flexible approach that allows us to adapt components and levels of compensation to motivate and reward individual executives within the context of our broader strategic and financial goals. This requires that we consider subjective factors including, but not limited to the following:

• | The nature of the executive’s position;
• | The performance record of the executive, combined with the value of the executive’s skills and capabilities in supporting the long-term performance of the Company;
• | The Company’s overall operational and financial performance; and
• | Whether each executive’s total compensation potential and structure is sufficient to ensure the retention of the executive officer when considering the compensation potential that may be available elsewhere

In making compensation decisions, the Committee relies on the members’ general knowledge of our industry, supplemented by advice from our Chief Executive Officer based on his knowledge of our industry and the markets in which we participate. From time to time, we conduct informal analyses of compensation practices and our Compensation and Personnel Development Committee may review broad-based third-party surveys to obtain a general understanding of current compensation practices. In addition, in 2022, our Compensation and Personnel Development Committee reviewed and considered the results of the independent review conducted by Willis Towers of the total compensation of each of our NEOs, based on peer group pay and industry survey data, but did not implement any changes to 2022 compensation based on the Willis Towers report.

The Committee has chosen incentive operating income targets as the metric to measure performance for each NEO. Our NEOs’ compensation is based upon their oversight of and responsibility for the entire Company. As such, it is reflective of the scope and breadth of their management responsibility, and the performance of the Company on a consolidated basis.

## — ELEMENTS OF COMPENSATION

As outlined below, our compensation program for our NEOs is comprised of three primary elements: (i) base salary and traditional benefits, (ii) annual incentive compensation, and (iii) long-term equity incentive compensation. Each element plays an integral role in our overall compensation strategy. Moreover, the Committee has approved certain executive perquisites and post-employment change-in-control compensation to our NEOs for purposes of motivating them and retaining their services.

Element of Compensation |  | Purpose/Description |  | Form/Timing of Payment
Base Salary and traditional benefits |  | To provide a base level of compensation for services performed, to encourage the continued service of our executive officers and to attract additional talented executive officers when necessary |  | Cash/throughout the fiscal year
Annual Incentive Compensation |  | To attract, motivate and reward executives to achieve and surpass key performance target goals |  | Cash/typically in February based upon the prior fiscal year’s performance
Long-Term Equity Incentive Compensation |  | To attract, motivate and reward executives to increase stockholder value, and encourage them to make long-term commitments to serve the Company |  | Restricted stock units with performance and time vesting criterion/following the release of second quarter earnings

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### Pay-for-Performance and At-Risk Compensation

Base Salary and Traditional Benefits

Base salaries paid to our NEOs are set forth in the “Summary Compensation Table for 2022.” Base salary adjustments are determined by making reasoned subjective determinations about current economic conditions such as general wage inflation as well as the executive’s qualifications, experience, responsibilities, and past performance. In addition to base salaries, we provide traditional benefits such as group health, disability, and life insurance benefits, as well as matching contributions to our 401(k) plan.

Annual Incentive Compensation

Each of our NEOs received annual incentive compensation for 2022 based upon the actual performance of the Company relative to the performance targets (as described below), which were established by the Committee on February 3, 2022. The table below shows the target annual incentive award for each of our NEOs.

For 2022, the amount of incentive compensation payable to each of our named executive officers was calculated as follows:

INCENTIVE GRADE LEVEL FACTOR

Set forth below are the incentive grade level factors for each of our NEOs:

NEO | Multiple of Base Salary
Mr. Christopher | 125%
Mr. Martin | 90%
Mr. Sigloch | 90%
Mr. Miritello | 90%

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PERFORMANCE FACTOR

Set forth below are the corresponding payout percentages tied to various levels of achievement above or below pre-approved primary operating income performance targets. To promote alignment between pay and performance, incentive compensation amounts are not paid to NEOs when the achievement level of the operating income performance target is less than 94%.

Performance to Target(1) | Payout Percentage | Performance to Target(1) | Payout Percentage
94% | 50% | 128% | 250%
97% | 75% | 137% | 275%
100% | 100% | 145% | 300%
103% | 125% | 154% | 325%
106% | 150% | 162% | 350%
108% | 175% | 171% | 375%
111% | 200% | 179% | 400%
120% | 225% |  |

(1) | Performance to target percentages have been rounded to the nearest whole percent for purposes of this table.

The performance factor applicable to each of the NEOs was determined based on the achievement level of the consolidated Company incentive operating income target, as shown in the following table:

Name |  | Incentive Operating Income Performance Criteria(1) |  | Incentive Operating Income Performance Target(2) |  | Weighting |  | Performance |  | 2022 Achievement Level Over Primary Target |  | 2022 Performance Factor
Gregory L. Christopher |  | Consolidated Company |  | $360 million |  | 100% |  | $884 million |  | 246% |  | 400%
Jeffrey A. Martin |  | Consolidated Company |  | $360 million |  | 100% |  | $884 million |  | 246% |  | 400%
Steffen Sigloch |  | Consolidated Company |  | $360 million |  | 100% |  | $884 million |  | 246% |  | 400%
Christopher J. Miritello |  | Consolidated Company |  | $360 million |  | 100% |  | $884 million |  | 246% |  | 400%

(1) | Incentive operating income is the performance criteria metric used for all bonus plans. Incentive operating income includes adjustments to operating income as presented in the Company’s audited financial statements for purposes of defining the performance criteria, such as: (i) certain standard adjustments made annually, including expenses associated with phantom shares granted to personnel in our European businesses, and FIFO variances; and (ii) certain adjustments made when applicable, including impairment charges, certain gains or losses on the sale of assets, certain gains stemming from claim recoveries, consolidation related expenses and purchase accounting adjustments.
(2) | The performance targets applicable to our NEOs were established by the Committee on February 3, 2022, and sought to continue the Company’s longstanding approach of establishing ambitious performance goals that would motivate and incentivize our NEOs to deliver value to our stockholders throughout the Company’s fiscal year.

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2022 NEO ANNUAL INCENTIVE CALCULATIONS

As a result of 2022 performance, the annual incentive payments for the NEOs were calculated as follows:

(1) | The target award is determined by multiplying the NEO’s base earnings by the applicable incentive grade level factor.

#### Long-Term Equity Incentive Compensation Program

OVERVIEW

Our long-term equity-based incentive compensation program serves three goals:

1. | Aligning our NEOs’ financial interests with the interests of our stockholders;
2. | Retaining the services of talented and seasoned executives, motivating them to make deep, long-term commitments to the Company, and ensuring sound and smooth succession and transition planning for the Company and our NEOs; and
3. | Rewarding our NEOs for advancing our long-term financial success and increasing stockholder value.

The Committee has made the retention of executives and key employees a particular focus of the long-term equity incentive compensation program in recent years.

The Committee has decided that the best way to meet the objectives of our long-term incentive program is to award a combination of performance-based restricted stock and time-based restricted stock, allocated as shown below. In 2022, to reaffirm the alignment of pay and performance, the Committee chose to award only performance-based restricted stock to our NEOs, which, provided performance criteria are met, will cliff vest after a period of three years.

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The Committee believes that the extended and cliff vesting schedules, and performance criteria described below will motivate our NEOs and key employees to remain with the Company and make long-term contributions to stockholder value generation.

In addition, the Committee determined that it was appropriate to award a special grant of performance-based restricted stock to Mr. Christopher in November 2022, as discussed further under “CEO Special Retention Grant” below, to promote retention of Mr. Christopher through the end of fiscal year 2027, and in recognition of Mr. Christopher’s strong and consistent leadership of the Company.

VESTING SCHEDULE FOR PERFORMANCE-BASED RESTRICTED STOCK

To foster executive retention, 100% of the regular annual equity awards given to NEOs in 2022, all of which are performance-based, will cliff vest after a period of three years. The Committee elected to use a long-term vesting schedule to promote executive retention in our competitive industry and to incentivize performance. However, given the importance of long-term equity incentive awards in our compensation program, the Committee provided for accelerated vesting in the event of death, disability or a change in control (as explained in more detail in the “2022 Grant of Plan Based Awards Table”). The Committee believes that accelerated vesting would be appropriate in those circumstances to encourage our executives to focus on the potential benefits of a change in control transaction for our stockholders without harboring concerns for their financial security.

PERFORMANCE CRITERIA FOR PERFORMANCE-BASED RESTRICTED STOCK

Of the annual equity awards granted to our NEOs in 2022, 100% are performance-based, and vesting is contingent upon the Company’s performance as measured by an adjusted earnings before interest, taxes, depreciation and amortization (EBITDA) metric. This single metric was utilized in 2022 to prioritize management’s enhanced attention to earnings and cash flow. Specifically, utilizing this metric ensures that annual performance-based awards to these NEOs will only vest based upon the achievement of specified earnings growth targets over a three-year performance period, which for the 2022 grants, was December 26, 2021 to December 28, 2024. For this purpose, the adjusted EBITDA metric means the average adjusted EBITDA achieved by the Company during each of the three fiscal years during the performance period, as compared with an adjusted EBITDA target of $373.6 million.

The degree to which the annual equity awards granted to Messrs. Christopher, Martin, Sigloch and Miritello vest is contingent upon the Company’s actual performance as compared with the adjusted EBITDA target. The table below illustrates the applicable achievement levels and corresponding vesting percentages based upon the adjusted EBITDA metric. If the achievement percentage is less than 80%, the vesting percentage is 0%. Moreover, if the achievement percentage is between the specified levels, the vesting percentage is determined by linear interpolation.

ADJUSTED EBITDA METRIC

Achievement Percentage | Vesting Percentage
<80% | 0%
80% | 50%
100% | 100%
110% | 200%

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To be clear, the adjusted EBITDA target established for our annual equity grants is just one of a number of different, yet complementary performance metrics utilized by the Company in its efforts to design an overall compensation program that is appropriately balanced and furthers its underlying aims. For example, the Company’s performance-based compensation program also incorporates the ambitious short and long-term operating targets that underlie the Company’s annual cash incentive compensation program and long-term aspirations for strategic growth.

The Company has traditionally maintained, and will continue to maintain lofty expectations and goals with respect to stockholder value creation. Nevertheless, given the primary retention aim of the long-term equity incentive compensation program, the Committee has concluded that the performance-based criterion for the equity awards granted to our NEOs are appropriate in the context of our well-balanced overall executive compensation program.

CEO SPECIAL RETENTION GRANT

In November 2022, the Committee determined to award Mr. Christopher a special, one-time incentive equity grant of restricted stock, which we refer to as the CEO Special Retention Grant. The CEO Special Retention Grant vests based upon the Company’s actual performance as compared with an adjusted EBITDA performance target of $373.6 million over a three-year reference period (December 26, 2021 to December 28, 2024), as well as based on Mr. Christopher’s continued employment with the Company through December 31, 2027 (subject to accelerated vesting on termination of employment due to death or disability, or on a change in control, at the maximum performance level if such event occurs prior to December 28, 2024, or at the actual performance level if such event occurs after December 28, 2024). The adjusted EBITDA performance criteria applicable to the CEO Special Retention Grant are consistent with the performance criteria applicable to the annual long-term equity awards granted to our NEOs in 2022, and adjusted EBITDA performance for purposes of the CEO Special Retention Grant will be assessed in the same manner as the 2022 annual awards. As discussed above under “Performance Criteria for Annual Performance-Based Restricted Stock,” the Committee views adjusted EBITDA as a critical metric to incentivize our NEOs and promote creation of stockholder value. However, to enhance its retentive effect, the time-based, cliff vesting component of the CEO Special Retention Grant extends for a longer duration than the 2022 annual awards, and runs until December 31, 2027.

The award covers 125,000 shares of restricted stock at target performance level, meaning that if 100% of the adjusted EBITDA target is met, the target number of 125,000 shares will be eligible to vest on December 31, 2027. If 80% of the adjusted EBITDA target is met, the threshold number of 62,500 shares will be eligible to vest on December 31, 2027. If 110% of the adjusted EBITDA target is met, the maximum number of 250,000 shares, will be eligible to vest on December 31, 2027.

When considering the CEO Special Retention Grant, the Committee weighed numerous factors, including Mr. Christopher’s exceptional performance and dedication to the Company (as evidenced by his long tenure with the Company, the Company’s strong performance under his leadership as CEO, his prominence within the industry, and his unique ability to generate value for the Company’s stockholders); the need to ensure that Mr. Christopher will remain with the Company for a sufficient period of time to facilitate the transition of the CEO role at the appropriate time; and the need to ensure that the Company’s compensation programs are in alignment with the interests of the Company’s stockholders. Also as part of its consideration process, the Committee engaged Willis Towers to prepare a market analysis on the size, scope and design of special executive awards granted by other companies to address similar retention and succession planning factors.

After careful evaluation and robust discussion, and taking into consideration the independent evaluation performed by Willis Towers, the Committee determined to approve the CEO Special Retention Grant in November 2022. The Committee felt that making the CEO Special Retention Grant was of critical importance and served the best interests of the Company, as the Committee viewed the award as necessary to address the unique retention and succession considerations facing the Company; as being reasonable in size, scope and design; and as being appropriate relative to the Company’s overall pay-for-performance philosophy, given the strong emphasis placed on both Company performance and long-term retention.

TIMING OF LONG-TERM EQUITY AWARD GRANTS

Long-term equity incentive awards to our Chief Executive Officer and other NEOs are traditionally granted annually, typically following the release of the Company’s second quarter and six-month operating results, and are based on the determinations of the Committee. Our Chief Executive Officer makes recommendations to the Committee regarding awards for other NEOs and members of the management team. In 2022, the NEOs received their annual grants in August.

In granting long-term equity awards to our NEOs, the Committee applied no set formula for allocating awards, and instead made reasoned, subjective determinations based upon their performance, the importance of retaining their services, and their role in helping us achieve our long-term goals. In 2022 (and not including the CEO Special Retention Grant (see above)), we awarded annual grants to our NEOs covering an aggregate of 128,500 shares.

Moreover, after careful evaluation of the Company’s future succession and transition planning needs, and in consideration of the vital role Mr. Christopher has played in the Company’s success throughout his career, the Committee approved the CEO Special Retention Grant in November 2022. As discussed above under “CEO Special Retention Grant,” an ultimate goal of this award is to retain Mr. Christopher’s valuable services through the end of fiscal year 2027, which services we anticipate will expand to include facilitating the transition of the Company’s chief executive leadership role.

#### Perquisites

We offer perquisites to our NEOs, which we view as an added element of our executive compensation program designed not only to attract, retain and reward our NEOs, but also to facilitate the performance of their duties on behalf of the Company. The perquisites we provided to our NEOs in fiscal year 2022 are set forth in the “Summary Compensation Table for 2022”, and included, among others, estate and tax planning, personal use of our Company airplane, and reimbursement of the income tax liabilities associated with certain perquisites. Estate and tax planning is provided to certain NEOs to complement our various compensation elements for the purpose of ensuring the NEOs understand the complexity of the long-term equity incentives and are thereby able to maximize the value of such benefits. We maintain a Company-owned airplane primarily to provide efficient transportation for executives, employees and customers to our geographically dispersed operations. From time to time, when our plane is not being used for business purposes, we allow certain NEOs to use the plane for personal travel. We have also provided executive physicals as a risk management tool and to ensure our NEOs are mindful of their personal health. Certain club memberships are provided, and serve the primary aim of facilitating networking with business clients.

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## — COMPENSATION RISK MANAGEMENT

In connection with its continued appraisal of our compensation program, management, with oversight from the Committee, reviews our compensation policies and practices, and the overall compensation program with respect to our risk management practices and any potential risk-taking incentives. This assessment includes a review of the primary elements of our compensation in light of potential risks:

COMPENSATION PROGRAM RISK CONSIDERATIONS

Pay Mix |  | • Compensation program includes an appropriately balanced mix of short and long-term incentives, which mitigates the risk of undue focus on short-term targets while rewarding performance in areas that are key to our long-term success • Base salaries are set at competitive levels to promote stability and give executives an element of compensation that is not at risk.
Performance Metrics and Goals |  | • Distinct performance metrics are used in both our short-term and long-term incentive plans. • Our annual incentive compensation program includes a payout scale (and cap) reflective of a pay for performance philosophy.
Long-term Incentives |  | • Our long-term equity incentive program is designed to retain key executives and business leaders and to align their interests with those of our stockholders.

As previously detailed (see page 17), the Company has adopted a series of policies, including bans on pledging and hedging, and a clawback policy, to further mitigate risk taking behaviors. Beyond our Company clawback policy, which applies to all President and Vice President-level executives, our Chief Executive Officer and Chief Financial Officer are subject to clawback provisions under the Sarbanes Oxley Act of 2002. For these reasons, we believe that our compensation policies and practices are not likely to have a material adverse effect on the Company.

### Tax Considerations

Section 162(m) of the Internal Revenue Code (the “Code”) generally disallows a tax deduction to public companies for compensation in excess of $1,000,000 paid to certain executive officers, subject historically to an exception for qualifying “performance-based compensation.” The Tax Cuts and Jobs Act, enacted on December 22, 2017, substantially modified Section 162(m) of the Code and, among other things, eliminated the performance-based exception to the $1,000,000 deduction limit and expanded the scope of the executive officers who are subject to Section 162(m) of the Code.

To maintain flexibility in compensating executive officers in a manner designed to promote varying corporate goals in the best interest of the company, we consider the impact of Section 162(m) of the Code when determining executive compensation, but we do not limit our actions with respect to executive compensation to preserve deductibility under Section 162(m) of the Code if we determine that doing so is in the best interests of the Company and its stockholders.

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| # COMPENSATION AND PERSONNEL DEVELOPMENT COMMITTEE REPORT

The Compensation and Personnel Development Committee has reviewed and discussed with the Company’s management the Compensation Discussion and Analysis required by Item 402(b) of Regulation S-K. Based on such review and discussions, the Compensation and Personnel Development Committee recommended to the Board of Directors that the Compensation Discussion and Analysis be included in this Proxy Statement.

Scott J. Goldman, Chairman
Gary S. Gladstein
Terry Hermanson

## — COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

During fiscal year 2022, Messrs. Gladstein, Hermanson and Herzog served on the Compensation and Personnel Development Committee. No member of the Committee was, during fiscal year 2022, an officer or employee of the Company or was formerly an officer of the Company. In addition, no member of the Committee, during fiscal year 2022, had any relationship requiring disclosure by the Company as a related party transaction under Item 404 of Regulation S-K. No executive officer of the Company served on any board of directors or compensation committee of any other company for which any of the Company’s directors served as an executive officer at any time during fiscal year 2022.

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| # EXECUTIVE COMPENSATION TABLES

## — SUMMARY COMPENSATION TABLE FOR 2022

The following table shows compensation of our principal executive officer, our principal financial officer, and other named executive officers for the 2022, 2021, and 2020 fiscal years, as applicable.

Name and Principal Position |  | Year |  | Salary ($) |  |  | Bonus ($) |  | Stock Awards ($)(1) |  | Non-Equity Incentive Plan Compensation ($) |  | All Other Compensation ($) |  |  | Total ($)
Gregory L. Christopher |  | 2022 |  |  | 1,450,000 | (2) |  | — |  | 25,825,500 |  | 7,250,000 |  |  | 468,579 | (3) |  | 34,994,079
Chief Executive Officer & Chairman |  | 2021 |  |  | 1,376,923 |  |  | 1,450,000 |  | 3,259,125 |  | 4,302,885 |  |  | 452,834 |  |  | 10,841,767
| 2020 |  |  | 1,250,000 |  |  | 300,000 |  | 2,220,750 |  | 3,125,000 |  |  | 337,398 |  |  | 7,233,148
Jeffrey A. Martin |  | 2022 |  |  | 425,000 | (2) |  | — |  | 3,244,560 |  | 1,530,000 |  |  | 149,207 | (4) |  | 5,348,767
EVP, Chief Financial Officer & Treasurer |  | 2021 |  |  | 425,000 |  |  | 450,000 |  | 999,465 |  | 956,250 |  |  | 155,458 |  |  | 2,986,173
| 2020 |  |  | 400,125 |  |  | 300,000 |  | 681,030 |  | 720,225 |  |  | 85,802 |  |  | 2,187,182
Steffen Sigloch |  | 2022 |  |  | 365,000 | (2) |  | — |  | 2,974,180 |  | 1,314,000 |  |  | 181,918 | (5) |  | 4,835,098
Chief Manufacturing Officer |  | 2021 |  |  | 365,000 |  |  | 350,000 |  | 956,010 |  | 804,825 |  |  | 200,848 |  |  | 2,676,683
| 2020 |  |  | 344,177 |  |  | — |  | 651,420 |  | 516,266 |  |  | 127,321 |  |  | 1,639,184
Christopher J. Miritello |  | 2022 |  |  | 356,796 | (2) |  | — |  | 1,013,925 |  | 1,266,061 |  |  | 37,434 | (6) |  | 2,674,216
EVP, General Counsel & Secretary |  | 2021 |  |  | 337,615 |  |  | 350,000 |  | 304,185 |  | 759,634 |  |  | 34,110 |  |  | 1,785,544
| 2020 |  |  | 330,000 |  |  | 325,000 |  | 177,660 |  | 495,000 |  |  | 34,680 |  |  | 1,362,340

(1) | This column represents the aggregate grant date fair value of awards granted to our NEOs, including the CEO Special Retention Grant, as discussed in the section entitled “CEO Special Retention Grant”, and assuming, for purposes of any awards subject to performance-based vesting criteria, the probable outcome of the performance conditions. For information on the valuation assumptions with respect to these awards, refer to Note 17 - Stock-Based Compensation to the Company’s Consolidated Financial Statements filed with its Annual Report on Form 10-K for the fiscal year ended December 31, 2022. The amounts above reflect the Company’s aggregate expense for these awards and do not necessarily correspond to the actual value the named executive officers will recognize.
(2) | Effective September 12, 2022, Mr. Miritello’s base salary was increased by 2%. No other NEOs received base salary increases during the fiscal year ended December 31, 2022.
(3) | Mr. Christopher’s other compensation includes $251,012 in restricted stock dividends, including the Special Dividend (as discussed on page 48 below), and accrued interest in respect of shares of restricted stock that were unvested at the time the Special Dividend was declared and that vested in 2022. Other compensation also includes $18,315 in premiums on a life insurance policy maintained on his behalf; a $28,517 reimbursement of the income tax liabilities associated with certain perquisites; $125,479 in club memberships; $4,140 in personal tax and estate planning; $7,538 in travel expenses for Company-sponsored events; and a $12,200 matching contribution to the Company’s 401(k) plan. In addition, Mr. Christopher’s other compensation includes the incremental cost of $21,378 incurred by the Company in connection with Mr. Christopher’s personal use of the Company aircraft, calculated based on the cost of fuel, crew travel, trip-related maintenance and other similar variable costs. Fixed costs, which do not change based on usage, are excluded as the Company’s aircraft is used predominantly for business purposes.
(4) | Mr. Martin’s other compensation includes $115,977 in restricted stock dividends, including the Special Dividend, and accrued interest in respect of shares of restricted stock that were unvested at the time the Special Dividend was declared and that vested in 2022. Other compensation also includes $4,544 in club memberships; $9,999 in travel expenses for Company-sponsored events; a $6,487 reimbursement of income tax liabilities associated with certain perquisites; and a $12,200 matching contribution to the Company’s 401(k) plan.
(5) | Mr. Sigloch’s other compensation includes $169,718 in restricted stock dividends, including the Special Dividend, and accrued interest in respect of shares of restricted stock that were unvested at the time the Special Dividend was declared and that vested in 2022. Other compensation also includes a $12,200 matching contribution to the Company’s 401(k) plan.
(6) | Mr. Miritello’s other compensation includes $25,234 in restricted stock dividends, including the Special Dividend, and accrued interest in respect of shares of restricted stock that were unvested at the time the Special Dividend was declared and that vested in 2022. Other compensation also includes a $12,200 matching contribution to the Company’s 401(k) plan.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 34

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## — 2022 GRANTS OF PLAN BASED AWARDS TABLE

The following table sets forth summary information regarding all grants of plan-based awards made to our named executive officers for the fiscal year ended December 31, 2022.

|  |  |  | Estimated Future Payouts Under Non-Equity Incentive Plan Awards(1) |  | Estimated Future Payouts Under Equity Incentive Plan Awards(2)(3) |  | All Other Stock Awards: Number of Shares of Stock |  | Grant Date Fair Value of
Name |  | Grant Date |  | Threshold ($) |  | Target ($) |  | Maximum ($) |  | Threshold (#) |  | Target (#) |  | Maximum (#) |  | or Units (#) |  | Stock Awards ($)
Gregory L. Christopher |  | — |  | 725,000 |  | 1,812,500 |  | 7,250,000 |  | — |  | — |  | — |  | — |  | —
|  | 8/8/2022 |  | — |  | — |  | — |  | 37,500 |  | 75,000 |  | 150,000 |  | — |  | 10,139,250
|  | 11/9/2022 |  |  |  |  |  |  |  | 62,500 |  | 125,000 |  | 250,000 |  | — |  | 15,686,250
Jeffrey A. Martin |  | — |  | 153,000 |  | 382,500 |  | 1,530,000 |  | — |  | — |  | — |  | — |  | —
|  | 8/8/2022 |  | — |  | — |  | — |  | 12,000 |  | 24,000 |  | 48,000 |  | — |  | 3,244,560
Steffen Sigloch |  | — |  | 131,400 |  | 328,500 |  | 1,314,000 |  | — |  | — |  | — |  | — |  | —
|  | 8/8/2022 |  | — |  | — |  | — |  | 11,000 |  | 22,000 |  | 44,000 |  | — |  | 2,974,180
Christopher J. Miritello |  | — |  | 126,606 |  | 316,516 |  | 1,266,062 |  | — |  | — |  | — |  | — |  | —
|  | 8/8/2022 |  | — |  | — |  | — |  | 3,750 |  | 7,500 |  | 15,000 |  | — |  | 1,013,925

(1) | Represents annual cash incentive awards that could have been earned based on performance in 2022. These columns show awards that were possible at the threshold, target and maximum levels of performance for each NEO in 2022, determined by multiplying each named executive officer’s actual base salary paid during 2022, by the named executive officer’s incentive grade level factor, and then by a performance factor of 40% for the threshold level (for 80% achievement of the applicable performance criteria), 100% for the target level (for 100% achievement of the applicable performance criteria), capped at 400%.
(2) | The vesting of shares of performance-based restricted stock granted to our NEOs on August 8, 2022 is conditioned upon the Company’s actual performance as compared with an adjusted EBITDA performance metric over a three-year reference period (December 26, 2021 to December 28, 2024). If 80% of the adjusted EBITDA target is met, the threshold number of shares are eligible for vesting on July 30, 2025. If 110% of the adjusted EBITDA target is met, the maximum number of shares are eligible for vesting on July 30, 2025. For more information on the performance-based criteria, please see the section entitled “Performance Criteria for Performance-Based Restricted Stock.”
(3) | The vesting of the CEO Special Retention Grant is conditioned upon the Company’s actual performance as compared with an adjusted EBITDA performance metric over a three-year reference period (December 26, 2021 to December 28, 2024). If 80% of the adjusted EBITDA target is met, the threshold number of shares are eligible for vesting on December 31, 2027. If 110% of the adjusted EBITDA target is met, the maximum number of shares are eligible for vesting on December 31, 2027. For more information on the performance-based criteria, please see the section entitled “CEO Special Retention Grant.

### Narrative Disclosure to Summary Compensation Table and Grant of Plan Based Awards Table

#### Employment Agreement with Mr. Christopher

On March 15, 2018, we entered into an indefinite term employment agreement (the “Employment Agreement”) with Mr. Christopher, pursuant to which he will continue to serve as the Company’s Chief Executive Officer, reporting directly to the Board. The Employment Agreement replaced Mr. Christopher’s prior employment agreement and, in so doing, eliminated the “single-trigger” severance to which Mr. Christopher would have been entitled upon the occurrence of a change in control of the Company.

The Employment Agreement provides that Mr. Christopher will receive a base salary of not less than $1,100,000 per year and will be eligible to receive an annual bonus award. For each fiscal year, Mr. Christopher’s target annual bonus will be 125% of his base salary upon achievement of target performance levels, and he will be eligible for a maximum annual bonus of 250% of base salary when performance equals or exceeds 125% of the applicable performance objectives. The actual annual bonus payable to Mr. Christopher will be based upon the actual level of achievement of annual Company and individual performance objectives for the applicable year, as determined by the Committee. In addition, during the term of Mr. Christopher’s employment, the Company will maintain a term life insurance policy for him with a face value of at least $5 million, and Mr. Christopher will have the right to name the beneficiary of such term life insurance policy.

In the event that Mr. Christopher’s employment is terminated for any reason (other than by the Company for “cause” (as defined in the Employment Agreement)), he will, subject to his execution of a general release in favor of the Company and his continued compliance with certain restrictive covenants (the “Conditions”), be entitled to receive the following: (i) any accrued but unpaid compensation and benefits; (ii) any unpaid annual bonus with respect to the previously completed fiscal year; (iii) subject to achievement of the applicable performance objectives for the fiscal year in which the termination occurs, payment of a prorated annual bonus for such fiscal year; and (iv) continued medical, dental and hospitalization coverage (or payment in lieu of coverage if coverage is not permitted by applicable law or the terms of the applicable plan) for Mr. Christopher, his spouse and covered dependents until the latest of Mr. Christopher’s 70th birthday, his spouse’s 70th birthday, and the 3rd anniversary of such termination.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 35

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Additionally, if Mr. Christopher’s employment is terminated by the Company without “cause” or by Mr. Christopher for “good reason” (as defined in the Employment Agreement), and there has not been a “change in control” (as defined in the Employment Agreement) in the past 24 months, Mr. Christopher will, subject to the Conditions, be entitled to (i) continued payment of his base salary for 36 months; and (ii) an amount equal to 3 times Mr. Christopher’s target annual bonus in respect of the fiscal year in which such termination occurs (or prior fiscal year, if greater), such amount to be paid in equal installments over the 3-year period following such termination at the same time such amounts would otherwise have been paid had no termination occurred. If Mr. Christopher’s employment is terminated by the Company without “cause” or by Mr. Christopher for “good reason” within 24 months of a “change in control,” Mr. Christopher will, subject to the Conditions, be entitled to (i) payment of his base salary for 36 months in a lump sum on the first regularly-scheduled payroll date following the 60th day following such termination; and (ii) an amount equal to 3 times Mr. Christopher’s target annual bonus in respect of the fiscal year in which such termination occurs (or prior fiscal year, if greater), paid in a lump sum on the first regularly-scheduled payroll date following the 60th day following such termination. The Employment Agreement does not provide for any “single-trigger” severance payments or benefits.

The Employment Agreement does not provide any gross-up or tax assistance on the severance benefits. Instead, the Employment Agreement contains a “modified cutback” provision, which would act to reduce the benefits payable to Mr. Christopher to the extent necessary to avoid a “golden parachute excise tax,” but only if such reduction would result in Mr. Christopher retaining a larger after-tax amount.

Mr. Christopher is subject to certain restrictive covenants during the term of his employment and thereafter, including customary non-compete restrictions that apply for one year post-termination and customary non-solicitation restrictions with respect to current and prospective employees that apply for one year post-termination. In addition, during the term of his employment and for one year thereafter, Mr. Christopher is prohibited from contacting any customer or prospective customer of the Company, or any representative of the same, for the purpose of providing any service or product competitive with any service or product sold or provided by the Company.

#### Change in Control Agreements with Messrs. Martin, Sigloch and Miritello

On July 26, 2016, the Company entered into change in control agreements with certain key members of the management team, including Messrs. Martin and Sigloch. The Company entered into a substantially similar change in control agreement with Mr. Miritello on January 3, 2017. Pursuant to those agreements, if, upon or within two years following a “change in control”, the executive’s employment is terminated by the Company without “cause” (other than on account of death or Disability), or by the executive for “good reason”, subject to execution of a general release of claims, the executive will be entitled to: (i) an amount equal to two times the executive’s base salary (as in effect immediately prior to the change in control or, if greater, the date of such termination); and (ii) an amount equal to two times the average annual bonus paid to the executive (including, for this purpose only, any amounts deferred) in respect of the three calendar years immediately preceding the calendar year in which the change in control occurs (or the three calendar years immediately preceding the calendar year of such termination, if greater). On February 22, 2022, the Company entered into amended change in control agreements with Messrs. Martin and Miritello, pursuant to which, if, upon or within three years following a “change in control”, the executive’s employment is terminated by the Company without “cause” (other than on account of death or Disability), or by the executive for “good reason”, subject to execution of a general release of claims, each executive is entitled to three times the executive’s base salary and three times the executive’s average annual bonus, as outlined in the foregoing. The terms “change in control” and “cause” are defined in the 2014 Incentive Plan and the term “good reason” is defined in each executive’s change in control agreement, as amended. The Company entered into a substantially similar amended change in control agreement with Mr. Sigloch on July 18, 2022. The agreements also provide that for two years following termination under the circumstances described above, each of Messrs. Martin, Sigloch and Miritello will receive (subject to the executive’s election of COBRA continuation coverage under the Company’s group health plan) continued coverage under the Company’s group health plan at the Company’s cost (or at the direction of the Company, reimbursement for COBRA premiums) for two years following such termination.

Further, the amended agreements with Messrs. Martin and Miritello provide that if either executive is terminated without “cause,” notwithstanding the non-occurrence of a “change in control,” he is entitled to (i) an amount equal to two times the executive’s base salary (as in effect immediately prior to the date of such termination); and (ii) an amount equal to two times the average annual bonus paid to the executive (including, for this purpose only, any amounts deferred) in respect of the three calendar years immediately preceding the calendar year in which such termination occurs.

#### 2019 and 2014 Incentive Plans

In 2021, we maintained the 2019 Incentive Plan and 2014 Incentive Plan (together, the “Plans”), which were approved by our stockholders at our Annual Meetings held in May 2019 and May 2014 respectively. The Committee administers the Plans and is authorized to, among other things, designate participants, grant awards, including cash-based awards that historically were intended to qualify as performance-based compensation for purposes of Section 162(m) of the Internal Revenue Code, determine the number of shares of Common Stock to be covered by awards and determine the terms and conditions of any awards, and construe and interpret the Plans and award agreements issued pursuant thereto. The 2014 Incentive Plan reserved 1,500,000 shares of our Common Stock for issuance, subject to adjustment in the event of any change in the outstanding Common Stock or the capital structure of the Company or any other similar corporate transaction or event. The 2019 Plan reserved 2,000,000 shares of our Common Stock for issuance, subject to adjustments under similar circumstances.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 36

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## — OUTSTANDING EQUITY AWARDS AT FISCAL 2022 YEAR-END

The following table sets forth summary information regarding the outstanding equity awards held by our named executive officers as of December 31, 2022.

|  |  |  | Option Awards(1) |  | Stock Awards
Name |  | Grant Date |  | Number of Securities Underlying Unexercised Options (#) Exercisable |  | Number of Securities Underlying Unexercised Options (#) Unexercisable |  | Option Exercise Price ($) |  | Option Expiration Date |  | Number of Shares or Units of Stock That Have Not Vested (#) |  | Market Value of Shares or Units of Stock That Have Not Vested ($) |  | Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (#)(2)(3)(4) |  | Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units, or Other Rights That Have Not Vested ($)
Gregory Christopher(6) |  | 07/27/2017 |  | — |  | — |  | — |  | — |  | — |  | — |  | 8,000 |  | 472,000
| 07/26/2018 |  | — |  | — |  | — |  | — |  | 28,000 |  | 1,652,000 |  | 50,000 |  | 2,950,000
| 07/25/2019 |  | — |  | — |  | — |  | — |  | 49,000 |  | 2,891,000 |  | 66,000 |  | 3,894,000
| 08/07/2020 |  | — |  | — |  | — |  | — |  | 45,000 |  | 2,655,000 |  | 60,000 |  | 3,540,000
| 08/02/2021 |  | — |  | — |  | — |  | — |  | — |  | — |  | 150,000 |  | 8,850,000
| 08/08/2022 |  |  |  |  |  |  |  |  |  | — |  | — |  | 150,000 |  | 8,850,000
| 11/09/2022(5) |  |  |  |  |  |  |  |  |  | — |  | — |  | 250,000 |  | 14,750,000
Jeffrey Martin |  | 07/27/2017 |  | — |  | — |  | — |  | — |  | — |  | — |  | 7,000 |  | 413,000
| 07/26/2018(7) |  | — |  | — |  | — |  | — |  | 4,800 |  | 283,200 |  | 6,000 |  | 354,000
| 08/08/2019(9) |  | — |  | — |  | — |  | — |  | 8,400 |  | 495,600 |  | 6,000 |  | 354,000
| 08/07/2020(11) |  | — |  | — |  | — |  | — |  | 15,000 |  | 885,000 |  | 16,000 |  | 944,000
| 08/02/2021 |  | — |  | — |  | — |  | — |  | — |  | — |  | 46,000 |  | 2,714,000
| 08/08/2022 |  | — |  | — |  | — |  | — |  | — |  | — |  | 48,000 |  | 2,832,000
Steffen Sigloch |  | 07/27/2017 |  | — |  | — |  | — |  | — |  | — |  | — |  | 10,000 |  | 590,000
| 07/26/2018(7) |  | — |  | — |  | — |  | — |  | 6,000 |  | 354,000 |  | 10,000 |  | 590,000
| 08/08/2019(9) |  | — |  | — |  | — |  | — |  | 9,100 |  | 536,900 |  | 10,000 |  | 590,000
| 08/07/2020(12) |  | — |  | — |  | — |  | — |  | 12,000 |  | 708,000 |  | 20,000 |  | 1,180,000
| 08/02/2021 |  | — |  | — |  | — |  | — |  | — |  | — |  | 44,000 |  | 2,596,000
| 08/08/2022 |  | — |  | — |  | — |  | — |  | — |  | — |  | 44,000 |  | 2,596,000
Christopher J. Miritello |  | 09/14/2015 |  | 11,666 |  | — |  | $24.58 |  | 09/14/2025 |  | — |  | — |  | — |  | —
| 07/27/2017 |  | — |  | — |  | — |  | — |  | — |  | — |  | 2,000 |  | 118,000
| 07/26/2018(8) |  | — |  | — |  | — |  | — |  | 4,500 |  | 265,500 |  | — |  | —
| 08/08/2019(10) |  | — |  | — |  | — |  | — |  | 2,500 |  | 147,500 |  | 2,500 |  | 147,500
| 08/07/2020(12) |  | — |  | — |  | — |  | — |  | 4,000 |  | 236,000 |  | 4,000 |  | 236,000
| 08/02/2021 |  | — |  | — |  | — |  | — |  | — |  | — |  | 14,000 |  | 826,000
| 08/08/2022 |  |  |  |  |  |  |  |  |  | — |  | — |  | 15,000 |  | 885,000

(1) | The options granted to Mr. Miritello in 2015 are fully vested. All outstanding vested options are exercisable until they expire on the tenth anniversary of the grant date, subject to earlier cancellation. All outstanding options were adjusted in March 2017 due to payment of the Special Dividend. The amount of outstanding options and the exercise prices shown in the above table are post-adjustment.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 37

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(2) | The vesting of shares of performance-based restricted stock granted to all NEOs in 2016-2019 is conditioned upon the Company’s achievement of a 3.5% compounded annual growth rate in total stockholder return or diluted earnings per share over a defined reference period, and subject to earlier vesting in connection with a change in control or a termination of employment due to death, disability or a qualifying retirement (subject, in the case of a qualifying retirement, to achievement of the performance criteria, measured through the last day of the fiscal year preceding the year in which such qualifying retirement occurs). For the performance-based restricted stock granted to these executives on July 27, 2017, the vesting date was February 28, 2023, and the reference period was December 31, 2016, to the last day of the 2022 fiscal year. For the performance-based restricted stock granted to these executives on July 26, 2018, the vesting date was February 28, 2023, and the reference period was December 30, 2017, to the last day of the 2022 fiscal year. (Accordingly, the performance-based restricted stock granted in 2017 and 2018 are reported in the table as units of stock that have not vested, rather than as unearned equity incentive plan awards.) For the performance-based restricted stock granted to these executives on August 8, 2019 (or in the case of Mr. Christopher, July 25, 2019), the vesting date is February 28, 2024, and the reference period is December 30, 2018, to the last day of the 2023 fiscal year.
(3) | The vesting of shares of performance-based restricted stock granted to our NEOs in 2020 and 2021 is conditioned upon the Company’s actual performance as compared with certain adjusted EBITDA and average ROIC targets, each weighted on a 50%-50% basis, over a three-year reference period. For the performance-based stock granted in 2020, the vesting date, subject to achievement of the performance condition, is July 30, 2023, and the reference period is from December 29, 2019 to December 31, 2022. For the performance-based restricted stock granted in 2021, the vesting date, subject to achievement of the performance condition, is July 30, 2024, and the reference period is from December 27, 2020 to December 30, 2023. To the extent the Company’s actual performance during the applicable reference periods exceeds the performance condition, our NEOs are eligible to receive a maximum award of up to 200% of the shares granted (i.e., for achievement of 110% of each of the adjusted EBITDA and average ROIC targets). The values reflected in this table reflect the Company’s current estimate that the maximum award will be achieved.
(4) | The vesting of shares of performance-based restricted stock granted to our NEOs in 2022 is conditioned upon the Company’s actual performance as compared with an adjusted EBITDA target. The vesting date, subject to the achievement of the performance condition, is July 30, 2025, and the reference period is from December 26, 2021 to December 28, 2024. To the extent the Company’s actual performance during the applicable reference period exceeds the performance condition, our NEOs are eligible to receive a maximum award of up to 200% of the shares granted (i.e., for achievement of 110% of the adjusted EBITDA target). The values reflected in this table reflect the Company’s current estimate that the maximum award will be achieved. For more information on the performance-based criteria, please see the section entitled “Performance Criteria for Performance-Based Restricted Stock.”
(5) | The vesting of the CEO Special Retention Grant is conditioned upon the Company’s actual performance as compared with an adjusted EBITDA target. The vesting date, subject to the achievement of the performance condition, is December 31, 2027, and the reference period is from December 26, 2021 to December 28, 2024. For more information on the performance-based criteria, please see the section entitled “CEO Special Retention Grant.
(6) | Shares of time-based restricted stock granted to Mr. Christopher vested or will vest 30% on each of the third and fourth anniversaries of the vesting commencement date (July 30 of the year of grant), and 40% on the fifth anniversary of the vesting commencement date, in each case, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability. The shares of time-based restricted stock granted to Mr. Christopher in 2017 are also subject to earlier vesting in connection with a termination of employment by us without cause or by Mr. Christopher for good reason.
(7) | Shares of time-based restricted stock vested or will vest 30% on each of July 30, 2021, and July 30, 2022, and 40% on July 30, 2023, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability.
(8) | Shares of time-based restricted stock will vest 100% on July 30, 2023, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability.
(9) | Shares of time-based restricted stock will vest 30% on each of July 30, 2022, and July 30, 2023, and 40% on July 30, 2024, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability.
(10) | Shares of time-based restricted stock will vest 100% on July 30, 2024, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability.
(11) | Shares of time-based restricted stock will vest 30% on each of July 30, 2023, and July 30, 2024, and 40% on July 30, 2025, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability.
(12) | Shares of time-based restricted stock will vest 100% on July 30, 2025, subject to earlier vesting in connection with a change in control or a termination of employment due to death or disability.

## — 2022 STOCK VESTED AND OPTIONS EXERCISED

The following table sets forth the value realized by each of our named executive officers as a result of the vesting of restricted stock and exercise of stock options during the fiscal year ended December 31, 2022.

|  | Option Awards |  | Stock Awards
Name |  | Number of Shares Acquired on Exercise (#) |  | Value Realized on Exercise ($)(1) |  | Number of Shares Acquired on Vesting (#) |  | Value Realized on Vesting ($)(2)
Gregory L. Christopher |  | — |  | — |  | 76,000 |  | 4,991,620
Jeffrey A. Martin |  | — |  | — |  | 19,200 |  | 1,205,264
Steffen Sigloch |  | — |  | — |  | 26,400 |  | 1,647,048
Christopher J. Miritello |  | 3,000 |  | 110,051 |  | 2,800 |  | 167,276

(1) | The amounts shown in the Value Realized on Exercise Column equals the number of options exercised multiplied by the market value of the Company’s stock on the exercise date less the option exercise price.
(2) | The amounts shown in the Value Realized on Vesting Column equal the number of shares vested multiplied by the market value of the Company’s stock on the vesting date.

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— | ## POTENTIAL PAYMENTS UPON TERMINATION OF EMPLOYMENT OR CHANGE IN CONTROL AS OF THE END OF 2022

Pursuant to the employment agreement with our Chief Executive Officer, and the equity award and change in control agreements with our other named executive officers, upon a change in control or certain terminations of employment, our named executive officers are entitled to payments of compensation and benefits and/or accelerated vesting of equity awards, in each case as described below. The table below reflects the amount of compensation and benefits payable to each named executive officer in the event of (i) a change in control, (ii) an involuntary termination without cause or a resignation for good reason (specifically, for Messrs. Martin, Sigloch and Miritello, the occurrence of such a termination upon or within two years following a change in control), and (iii) a termination by reason of death or disability. The named executive officers are not entitled to any payments in connection with a termination for cause.

The amounts shown assume the applicable triggering event occurred on December 31, 2022, and are estimates of the amounts that would be paid to the named executive officers upon the occurrence of such triggering event.

Name |  | Triggering Event |  | Salary & Bonus ($) |  |  | Benefits ($) |  |  | Accelerated Vesting of Equity Awards ($) |  |  | Total ($) |
Gregory L. Christopher |  | Termination Without Cause or for Good Reason |  |  | 17,037,500 | (1) |  |  | 259,463 | (3) |  |  | — |  |  |  | 17,296,963 |
| Termination Due to Death or Disability |  |  | 7,250,000 | (2) |  |  | 259,463 | (3) |  |  | 51,474,872 | (4) |  |  | 58,984,335 |
| Change in Control |  |  | — |  |  |  | — |  |  |  | 51,474,872 | (4) |  |  | 51,474,872 |
| Termination Without Good Reason |  |  | — |  |  |  | 259,463 | (3) |  |  | — |  |  |  | 259,463 |
Jeffrey A. Martin |  | Termination Without Cause or for Good Reason following a Change in Control |  |  | 2,987,650 | (5) |  |  | 36,544 | (5) |  |  | 9,488,264 | (4) |  |  | 12,512,458 |
| Termination Due to Death or Disability |  |  | — |  |  |  | — |  |  |  | 9,488,264 | (4) |  |  | 9,488,264 |
| Change in Control |  |  | — |  |  |  | — |  |  |  | 9,488,264 | (4) |  |  | 9,488,264 |
Steffen Sigloch |  | Termination Without Cause or for Good Reason following a Change in Control |  |  | 2,486,727 | (5) |  |  | 36,544 | (5) |  |  | 9,983,392 | (4) |  |  | 12,506,663 |
| Termination Due to Death or Disability |  |  | — |  |  |  | — |  |  |  | 9,983,392 | (4) |  |  | 9,983,392 |
| Change in Control |  |  | — |  |  |  | — |  |  |  | 9,983,392 | (4) |  |  | 9,983,392 |
Christopher J. Miritello |  | Termination Without Cause or for Good Reason following a Change in Control |  |  | 2,394,055 | (5) |  |  | 36,544 | (5) |  |  | 2,928,180 | (4) |  |  | 5,358,779 |
| Termination Due to Death or Disability |  |  | — |  |  |  | — |  |  |  | 2,928,180 | (4) |  |  | 2,928,180 |
| Change in Control |  |  | — |  |  |  | — |  |  |  | 2,928,180 | (4) |  |  | 2,928,180 |

(1) | Includes the value of continuation of base salary and annual incentive compensation (determined based upon Mr. Christopher’s 2022 target bonus) for three years post-termination. Also includes the value of a pro-rata bonus for the year of termination, determined based on actual performance, which is payable upon a termination for any reason (other than by the Company for cause). The pro-rata bonus amount listed represents Mr. Christopher’s 2022 bonus paid pursuant to our 2022 annual incentive program. If Mr. Christopher is terminated without cause or resigns for good reason during the 24-month period following a change in control, the amounts will be paid in a lump sum within 60 days following termination.
(2) | Includes the value of a pro-rata bonus for the year of termination. The pro-rata bonus amount listed represents Mr. Christopher’s 2022 bonus paid pursuant to our 2022 annual incentive program.
(3) | Includes the value of continued participation in the Company’s benefit plans following termination of employment until Mr. Christopher’s spouse’s 70th birthday, which Mr. Christopher is entitled to following a termination for any reason (other than by the Company for cause).
(4) | Includes the value of accelerated vesting of unvested shares of restricted stock as of December 31, 2022, based on a per share value of $59.00. Unvested shares of restricted stock granted to NEOs will vest automatically in connection with a termination due to death or disability or a change in control. Mr. Christopher is also entitled to accelerated vesting of certain of his awards (excluding, among others, the CEO Special Retention Grant) upon an involuntary termination without cause or a resignation for good reason. Payments to which named executive officers are entitled upon the accelerated vesting of restricted stock included payments associated with declared dividends and interest.
(5) | Includes the value of: (i) two times the executive’s base salary as in effect on December 31, 2022; (ii) two times the average annual bonus actually paid to the executive for the three calendar years preceding December 31, 2022; and (iii) the value of continued participation in Company’s group health plan for a period of two years. All amounts are payable on an involuntary termination without cause or upon a resignation by the executive for good reason that occurs upon or within two years following a change in control. As of December 31, 2022, Messrs. Martin, Sigloch and Miritello were not entitled to any amounts in connection with such an involuntary termination occurring outside of this two-year, post-change in control window. For additional details on the changes to the payments and benefits that may become payable to Messrs. Martin, Sigloch and Miritello on a qualifying termination, see the summary of the change in control agreements contained in the Narrative Disclosure to Summary Compensation Table and Grant of Plan Based Awards Table above.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 39

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## — PAY VERSUS PERFORMANCE TABLE

|  |  |  |  |  |  |  |  |  | Value of Initial Fixed $100 Investment Based on: |  |  |  |
Year (a) |  | Summary Compensation Table Total for PEO ($) (b) |  | Compensation Actually Paid to PEO ($) (c) |  | Average Summary Compensation Total for Non-PEO NEOs ($) (d) |  | Average Compensation Actually Paid to Non-PEO NEOs ($) (e) |  | Total Shareholder Return ($) (f) |  | Dow Jones U.S. Building Materials & Fixtures Index ($) (g) |  | Net Income ($ 000’s) (h) |  | Operating Income ($000’s) (i)
2022 |  | 34,994,079 |  | 39,921,017 |  | 4,286,027 |  | 5,542,672 |  | 104 |  | 74 |  | 658,316 |  | 877,149
2021 |  | 10,841,767 |  | 21,073,541 |  | 2,482,800 |  | 4,483,255 |  | 170 |  | 144 |  | 468,520 |  | 655,845
2020 |  | 7,233,148 |  | 8,624,330 |  | 1,729,569 |  | 2,019,211 |  | 112 |  | 126 |  | 139,493 |  | 245,838

Column (b). Reflects compensation amounts reported in the “Summary Compensation Table” for our CEO, Mr. Christopher, for the respective years shown.

Column (c). “Compensation actually paid” to our CEO in each of 2022, 2021 and 2020 reflects the respective amounts set forth in column (b) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. For awards with dividend rights, these amounts are paid in cash once the underlying award vests, and are incorporated as applicable in the table below. The dollar amounts reflected in column (b) of the above do not reflect the actual amount of compensation earned by or paid to our CEO during the applicable year. For information regarding the decisions made by our Compensation & Personnel Development Committee with respect to the CEO’s compensation for each fiscal year, please see the Compensation Discussion & Analysis sections of the proxy statements reporting pay for the fiscal years covered in the table above.

Year |  | 2020 |  | 2021 |  | 2022 |
CEO |  | Mr. Christopher |  | Mr. Christopher |  | Mr. Christopher |
SCT Total Compensation ($) |  | 7,233,148 |  | 10,841,767 |  | 34,994,079 |
Less: Stock and Option Award Values Reported in SCT for the Covered Year $) |  | (2,220,750 | ) | (3,259,125 | ) | (25,825,500 | )
Plus: Fair Value for Stock and Option Awards Granted in the Covered Year ($) |  | 2,638,875 |  | 4,425,375 |  | 23,595,500 |
Change in Fair Value of Outstanding Unvested Stock and Option Awards from Prior Years ($) |  | 1,152,600 |  | 8,483,199 |  | 6,564,886 |
Change in Fair Value of Stock and Option Awards from Prior Years that Vested in the Covered Year ($) |  | (179,543 | ) | 582,325 |  | 592,052 |
Less: Fair Value of Stock and Option Awards Forfeited during the Covered Year ($) |  | — |  | — |  | — |
Less: Aggregate Change in Actuarial Present Value of Accumulated Benefit Under Pension Plans ($) |  | — |  | — |  | — |
Plus: Aggregate Service Cost and Prior Service Cost for Pension Plans ($) |  | — |  | — |  | — |
Compensation Actually Paid ($) |  | 8,624,330 |  | 21,073,541 |  | 39,921,017 |

Equity Valuations: For 2022, performance-based restricted share unit grant date fair values are calculated using the average high/low stock price as of the date of grant assuming maximum performance. For 2021 and 2020, performance-based restricted share unit grant date fair values are calculated using the average high/low stock price as of the date of grant assuming target performance. Adjustments have been made using the stock price and performance accrual modifier as of year-end and as of the date of vest. Time-vested restricted share unit grant date fair values are calculated using the average high/low stock price as of date of grant. Adjustments have been made using the average high/low stock price as of year-end and as of each date of vest.

Column (d). The following non-CEO NEOs are included in the average figures shown for each of 2022, 2021 and 2020: Mr. Martin, Mr. Sigloch and Mr. Miritello.

Column (e). Average “compensation actually paid” for our non-CEO NEOs in each of 2022, 2021 and 2020 reflects the respective amounts set forth in column (d) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. For awards with dividend rights, these amounts are paid in cash once the underlying award vests, and are incorporated as applicable in the table below. The dollar amounts reflected in column (d) of the above do not reflect the actual amount of compensation earned by or paid to our non-CEO NEOs during the applicable year. For information regarding the decisions made by our Compensation & Personnel Development Committee with respect to our non-CEO NEOs’ compensation for each fiscal year, please see the Compensation Discussion & Analysis sections of the proxy statements reporting pay for the fiscal years covered in the table above.

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Year |  | 2020 Average |  | 2021 Average |  | 2022 Average |
Non-CEO NEOs |  | See column (d) note |  | See column (d) note |  | See column (d) note |
SCT Total Compensation ($) |  | 1,729,569 |  | 2,482,800 |  | 4,286,027 |
Less: Stock and Option Award Values Reported in SCT for the Covered Year $) |  | (503,370 | ) | (753,220 | ) | (2,410,888 | )
Plus: Fair Value for Stock and Option Awards Granted in the Covered Year ($) |  | 598,118 |  | 1,022,753 |  | 2,109,505 |
Change in Fair Value of Outstanding Unvested Stock and Option Awards from Prior Years ($) |  | 203,627 |  | 1,511,873 |  | 1,481,643 |
Change in Fair Value of Stock and Option Awards from Prior Years that Vested in the Covered Year ($) |  | (8,733 | ) | 219,049 |  | 76,385 |
Less: Fair Value of Stock and Option Awards Forfeited during the Covered Year ($) |  | — |  | — |  | — |
Less: Aggregate Change in Actuarial Present Value of Accumulated Benefit Under Pension Plans ($) |  | — |  | — |  | — |
Plus: Aggregate Service Cost and Prior Service Cost for Pension Plans ($) |  | — |  | — |  | — |
Compensation Actually Paid ($) |  | 2,019,211 |  | 4,483,255 |  | 5,542,672 |

Equity Valuations: See method as described in Column (c) note.

Column (f). For the relevant fiscal year, represents the cumulative total shareholder return (TSR) of the Company for the measurement periods ending on December 31, 2022, December 25, 2021 and December 26, 2020, respectively.

Column (g). For the relevant fiscal year, represents the TSR of the Dow Jones U.S. Building Materials & Fixtures index ending on each of December 31, 2022, December 25,2021 and December 26, 2020.

Column (h). Reflects “Net Income” in the Company’s Consolidated Income Statements included in the Company’s Annual Reports for the measurement periods ending on December 31, 2022, December 25, 2021 and December 26, 2020, respectively.

Column (i). The Company-selected measure is operating income.

### Relationship between Pay and Performance

Below are graphs showing the relationship of “compensation actually paid” (CAP) to our CEO and other NEOs in 2020, 2021 and 2022 to (i) TSR of both the Company and the Dow Jones U.S. Building Materials & Fixtures index, (ii) the Company’s net income, and (iii) the Company’s operating income.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 41

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MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 42

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### Pay Ratio

In 2022, the total compensation of Mr. Christopher, our Chief Executive Officer, was $34,994,079 as reported in the “Summary Compensation Table for 2022.” Based on the methodology described below, we determined that the median employee in terms of total 2022 compensation of all of our employees (other than Mr. Christopher) received an estimated $42,173 in total compensation for 2022. Therefore, the estimated ratio of 2022 total compensation of Mr. Christopher to the median employee was 830:1.

In general, we offer employees base salary, company retirement plan contributions, the opportunity to receive incentive awards for performance, and other benefits. In accordance with SEC rules, the median employee compensation provided above reflects company retirement plan contributions, incentive awards for 2022 performance and other benefits, but does not reflect benefits relating to group life or health plans generally available to all salaried employees.

To determine median employee compensation, we took the following steps:

• | We identified our employee population as of December 31, 2022, which consisted of approximately 5,137 employees.
• | For each employee (other than Mr. Christopher), we determined the sum of his or her base salary for 2022, and incentive awards for 2022. Comparing the sums, we identified an employee whose compensation best reflects the Company employees’ median 2022 compensation, taking into account whether their compensation likely would reflect median employee compensation in future years.
• | In accordance with SEC rules, we then determined that employee’s 2022 total compensation was $42,173 using the approach required by the SEC when calculating our named executive officers’ compensation, as reported in the Summary Compensation Table.

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| # PROPOSAL 4: ADVISORY VOTE ON THE FREQUENCY OF FUTURE STOCKHOLDER ADVISORY VOTES TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION

In accordance with Section 14A of the Exchange Act, stockholders are being asked to vote on an advisory, non-binding basis, on the frequency with which the Company should hold future advisory votes on the compensation of the Company’s NEOs. Stockholders may vote to hold an advisory vote on NEO compensation every year, every two years, or every three years.

Consistent with the results of the 2017 advisory vote on the frequency of the stockholder vote on NEO compensation at the Company’s 2017 Annual Meeting, the Company has presented a proposal for an advisory vote on named executive officer compensation to stockholders each year.

The Board of Directors believes that an annual advisory vote on executive compensation will give the Company’s stockholders the best opportunity to provide the Company with direct input each year on the Company’s compensation philosophy, policies and practices as disclosed in the proxy statement. Therefore, the Board of Directors recommends that stockholders vote to hold future advisory votes on the compensation of the Company’s NEOs every year. Although the stockholder vote on the frequency of advisory votes on NEO compensation is not binding on the Board of Directors or the Company, the Board of Directors and the Compensation and Personnel Development Committee will review the results of the vote and take them into consideration in determining how frequently to hold future advisory votes on NEO compensation. The option that receives the greatest number of votes cast by our stockholders will be considered when determining the frequency for holding future advisory votes on our NEOs’ compensation.

| THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT STOCKHOLDERS VOTE TO HOLD FUTURE ADVISORY VOTES ON THE COMPENSATION OF THE COMPANY’S NAMED EXECUTIVE OFFICERS EVERY YEAR.

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| # PRINCIPAL STOCKHOLDERS

As of March 13, 2023, the following parties were known by the Company to be the “beneficial owner” of more than five percent of the Common Stock:

Name and Address of Beneficial Owner | Shares Beneficially Owned |  | Percent of Class
Blackrock, Inc. 55 East 52nd Street New York, NY 10055 | 9,011,331(1) |  | 15.8%(2)
The Vanguard Group, Inc. 100 Vanguard Blvd. Malvern, PA 19355 | 6,221,492(3) |  | 10.9%(2)
GAMCO Investors, Inc. One Corporate Center Rye, NY 10580 | 4,591,767(4) |  | 8.1%(2)
Allspring Global Investments Holdings, LLC 525 Market Street, 10th Floor San Francisco, CA 94015 | 3,543,586(5) |  | 6.2%(2)

(1) | This information is based on a Schedule 13G/A filed by BlackRock, Inc. with the Securities and Exchange Commission (“SEC”) on January 23, 2023. BlackRock filed this Schedule 13G/A on its own behalf and on behalf of certain of its subsidiaries. The Schedule 13G/A reported that BlackRock has sole voting and dispositive power with respect to 8,898,327 and 9,011,331, respectively, of the shares shown. The Schedule 13G/A also reported that BlackRock Fund Advisors owned 5% or greater of the security class being reported on the Schedule 13G/A.
(2) | The percent of class shown was based on the shares of Common Stock reported on the Schedule 13G/A and the total number of shares outstanding as of December 31, 2022. The difference in the total number of shares outstanding on December 31, 2022 and March 13, 2023 does not materially affect the percentage of ownership of the class.
(3) | This information is based on a Schedule 13G/A filed by The Vanguard Group, Inc. (“VGI”) with the SEC on February 9, 2023. According to the Schedule 13G/A, VGI has sole dispositive power with respect to 6,114,622 of the shares shown. VGI also has shared voting power with respect to 59,177 of the shares shown, and shared dispositive power with respect to 106,870 of the shares shown.
(4) | This information is based on a Schedule 13D/A filed by GAMCO Investors Inc. (“GBL”) and certain of its affiliates (collectively, the “Gabelli Reporters”) on August 23, 2022. The Schedule 13D/A reported that GAMCO Asset Management Inc. (“GAMCO”) beneficially owns 2,671,967 of the shares reported; Gabelli Funds, LLC (“Gabelli Funds”) beneficially owns 1,843,500 of the shares reported; GGCP, Inc. (“GGCP”) beneficially owns 13,500 of shares reported; Mario J. Gabelli (“Gabelli”) beneficially owns 2,300 of the shares reported; MJG Associates, Inc. beneficially owns 60,000 of the shares reported; and Associated Capital Group, Inc. beneficially owns 500 of the shares reported. In addition, the Schedule 13D/A reported that each Gabelli Reporter (and certain executives, directors and other related persons as disclosed on the Schedule 13D/A) has the sole power to vote or direct the vote and sole power to dispose or to direct the disposition of the Common Stock reported for it, either for its own benefit or for the benefit of its investment clients or its partners, as the case may be, except that (i) GAMCO does not have authority to vote 69,300 of the reported shares, (ii) Gabelli Funds, a wholly-owned subsidiary of GBL, has sole dispositive and voting power with respect to the shares of the Company held by certain funds (the “Funds”) for which it provides advisory services, so long as the aggregate voting interest of all joint filers does not exceed 25% of their total voting interest in the Company and, in that event, the Proxy Voting Committee of each Fund shall respectively vote that Fund’s shares, (iii) at any time, the Proxy Voting Committee of each such Fund may take and exercise in its sole discretion the entire voting power with respect to the shares held by such fund under special circumstances such as regulatory considerations, and (iv) the power of Gabelli, Associated, GBL, and GGCP is indirect with respect to Common Stock beneficially owned directly by other Gabelli Reporters.
(5) | This information is based on a Schedule 13G filing by Allspring Global Investments Holdings, LLC (“AGIH”) on January 13, 2023. AGIH filed this Schedule 13G on its own behalf and on behalf of certain of its affiliates, including Allspring Global Investments, LLC and Allspring Funds Management, LLC (collectively with AGIH, “Allspring”). The Schedule 13G reported that prior to its sale on November 1, 2021, AGIH was a subsidiary of Wells Fargo & Company, and that prior to that date, its holdings were included on Schedules 13G filed by Wells Fargo & Company, LLC. The Schedule 13G reported that Allspring has sole voting and dispositive power with respect to 3,416,235 and 3,543,586, respectively, of the shares shown.

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| # BENEFICIAL OWNERSHIP OF COMMON STOCK BY INSIDERS

The following table sets forth, as of the close of business on March 13, 2023, information about the 1,687,795 shares of Common Stock (calculated based on 56,986,044 shares outstanding) beneficially owned by each of the Company’s current directors, nominees for director, executive officers and named executive officers. The “named executive officers” are those individuals set forth in the “Summary Compensation Table for 2022” included herein. Unless otherwise indicated, all directors, nominees for director, executive officers and named executive officers have sole voting and investment power with respect to the shares of Common Stock reported. The table and the accompanying footnotes set forth the foregoing persons’ current positions with the Company, principal occupations and employment over the preceding five years, age and directorships held in certain other publicly-owned companies.

Principal Occupation, Employment, etc. |  |  | Common Stock Beneficially Owned as of March 13, 2023 |  |  |  | Percent of Class
Chairman and Chief Executive Officer |  |  |  |  |  |  |  |
Gregory L. Christopher(1) |  |  | 813,359 |  |  |  | 1.4 | %
Independent Directors |  |  |  |  |  |  |  |
Elizabeth Donovan(2) |  |  | 25,000 |  |  |  |  | *
William C. Drummond(3) |  |  | 3,200 |  |  |  |  |
Gary S. Gladstein(5) |  |  | 180,695 |  |  |  |  | *
Scott J. Goldman(6) |  |  | 60,145 |  |  |  |  | *
John B. Hansen(7) |  |  | 82,107 |  |  |  |  | *
Terry Hermanson(8) |  |  | 58,126 |  |  |  |  | *
Charles P. Herzog, Jr.(9) |  |  | 38,024 |  |  |  |  | *
Section 16 Officers |  |  |  |  |  |  |  |
Jeffrey A. Martin |  |  | 194,783 |  |  |  |  | *
Executive Vice President, Chief Financial Officer and Treasurer since February 14, 2013; age 56(11) |  |  |  |  |  |  |  |
Christopher J. Miritello |  |  | 53,979 |  |  |  |  | *
Executive Vice President, General Counsel and Secretary since January 1, 2017; age 40(13) |  |  |  |  |  |  |  |
Steffen Sigloch |  |  | 178,277 |  |  |  |  | *
Chief Manufacturing Officer since May 4, 2017; age 54(15) |  |  |  |  |  |  |  |
SECTION 16 OFFICERS AND DIRECTORS AS A GROUP |  |  | 1,687,795 |  |  |  | 3.0% | **

* | Less than 1%
** | Includes 158,776 shares of Common Stock which are subject to currently exercisable stock options and 724,300 shares of non-vested restricted stock held by executive officers and directors of the Company.
(1) | The number of shares of Common Stock beneficially owned by Mr. Christopher includes (i) 493,000 shares of non-vested restricted stock, (ii) 123,500 shares owned by a trust in which his wife is beneficiary, (iii) 83,500 shares owned by a trust in which he is beneficiary and (iv) 6,800 shares of Common Stock which are owned by Mr. Christopher’s children.
(2) | The number of shares of Common Stock beneficially owned by Ms. Donovan includes (i) 14,000 shares of Common Stock which are subject to currently exercisable stock options, (ii) 2,000 shares of Common stock which are owned by Ms. Donovan’s spouse and (iii) 3,000 shares of non-vested restricted stock.
(3) | The number of shares of Common Stock beneficially owned by Mr. Drummond includes 3,000 shares of non-vested restricted stock.
(4) | The number of shares of Common Stock beneficially owned by Mr. Gladstein includes (i) 39,555 shares of Common Stock which are subject to currently exercisable stock options and (ii) 3,000 shares of non-vested restricted stock.

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(5) | The number of shares of Common Stock beneficially owned by Mr. Goldman includes (i) 39,555 shares of Common Stock which are subject to currently exercisable stock options and (ii) 3,000 shares of non-vested restricted stock.
(6) | The number of shares of Common Stock beneficially owned by Mr. Hansen includes (i) 16,000 shares of Common Stock which are subject to currently exercisable stock options, (ii) 12,500 shares of Common Stock owned by a trust where his wife and children serve as beneficiaries and (iii) 3,000 shares of non-vested restricted stock.
(7) | The number of shares of Common Stock beneficially owned by Mr. Hermanson includes (i) 20,000 shares of Common Stock which are subject to currently exercisable stock options and (ii) 3,000 shares of non-vested restricted stock.
(8) | The number of shares of Common Stock beneficially owned by Mr. Herzog includes (i) 18,000 shares of Common Stock which are subject to currently exercisable stock options, (ii) 5,000 shares of Common Stock owned by a trust of which Mr. Herzog’s children are beneficiaries; (iii) 8,000 shares of Common Stock owned by a trust of which Mr. Herzog’s spouse is beneficiary and (iv) 3,000 shares of non-vested restricted stock.
(9) | Mr. Martin served (i) as Interim Chief Financial Officer of the Company from October 26, 2012 until February 14, 2013, (ii) as Vice President - Corporate Development of the Company from January 11, 2011 until October 26, 2012, (iii) as Vice President-Finance & Corporate Development from August 1, 2008 until January 11, 2011, and (iv) as Vice President-Operations, Standard Products Division prior to August 1, 2008. The number of shares of Common Stock beneficially owned by Mr. Martin includes (i) 105,583 shares of Common Stock owned jointly between Mr. Martin and his wife and (ii) 89,200 shares of non-vested restricted stock.
(10) | Mr. Miritello served as Deputy General Counsel of the Company from September 15, 2015 to December 31, 2016. Prior to joining the Company, he was associated with the New York office of Willkie Farr & Gallagher LLP. The number of shares of Common Stock owned by Mr. Miritello includes (i) 11,666 shares of Common Stock which are subject to currently exercisable stock options and (ii) 30,000 shares of non-vested restricted stock.
(11) | Mr. Sigloch served as (i) President – Piping Systems North America of the Company from May 5, 2016 until May 4, 2017; (ii) President – Extruded Products of the Company from January 1, 2013 until May 5, 2016, (iii) Corporate Vice President – Engineering and Manufacturing of the Company from January 1, 2012 until January 1, 2013, and (iv) Vice President – Engineering and Manufacturing of Mueller Europe, Ltd, from July 1, 2011 until January 1, 2012. Prior to joining the Company on July 1, 2011, Mr. Sigloch served as Chief Executive Officer of Wieland Copper Products, LLC. The number of shares of Common Stock beneficially owned by Mr. Sigloch includes 91,100 shares of non-vested restricted stock.

## — DELINQUENT SECTION 16(a) REPORTS

Based solely upon its review of Forms 3 and 4 received by it, and written representations from certain reporting persons about whether any Form 5 filings were required, the Company believes that during 2022, all filing requirements applicable to its officers, directors and ten percent stockholders were complied with.

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| # ADDITIONAL MATTERS

## — VOTING SECURITIES

At the close of business on the Record Date, there were 56,986,044 shares of Common Stock outstanding, which are the only shares entitled to be voted at the Annual Meeting. Each share of Common Stock is entitled to one vote. Only stockholders of record at the close of business on the Record Date will be entitled to notice of, and to vote at, the Annual Meeting. The Bylaws do not provide for cumulative voting for the election of directors.

On March 9, 2017, the Company paid a special dividend (the “Special Dividend”) consisting of $3.00 in cash and $5.00 in principal amount of the Company’s 6% Subordinated Debentures due 2027 (the “Debentures”, which were fully redeemed by the Company on April 15, 2021) for each share of Common Stock outstanding as of the close of business on February 28, 2017. In connection with the Special Dividend, in accordance with the Company’s outstanding stock option plans and agreements, the Company adjusted the shares subject to and the per share exercise price with respect to outstanding options. This adjustment resulted in an increase in the number of shares subject to each outstanding option and an adjustment to the option purchase price designed to maintain the option holders’ intrinsic value following issuance of the Special Dividend. References in this Proxy Statement to beneficial stock ownership or outstanding options for periods following March 9, 2017 reflect the equitable adjustment made to options outstanding on February 28, 2017.

## — STOCKHOLDER NOMINATIONS FOR BOARD MEMBERSHIP AND OTHER PROPOSALS FOR THE 2024 ANNUAL MEETING

It is anticipated that the next Annual Meeting after the one scheduled for May 4, 2023 will be held on or about May 9, 2024. The Company’s Bylaws require that, for nominations of directors or other business to be properly brought before an Annual Meeting, written notice of such nomination or proposal for other business must be furnished to the Company. Such notice must contain certain information concerning the nominating or proposing stockholder and information concerning the nominee and must be furnished by the stockholder (who must be entitled to vote at the meeting) to the Secretary of the Company, in the case of the Annual Meeting to be held in 2024, no earlier than December 6, 2023 and no later than January 5, 2024. Such notice must contain the information required by our Bylaws, including the information required by Rule 14a-19 of the Exchange Act in the case of a stockholder who intends to solicit proxies in support of director nominees other than the Company’s nominees (unless such solicitation would not be subject to Rule 14a-19 under the Exchange Act). A copy of the applicable provisions of the Bylaws may be obtained by any stockholder, without charge, upon written request to the Secretary of the Company at the address set forth below.

In addition to the foregoing, and in accordance with the rules of the SEC, in order for a stockholder proposal, relating to a proper subject, to be considered for inclusion in the Company’s proxy statement and form of proxy relating to the Annual Meeting to be held in 2024, such proposal must be received by the Secretary of the Company by November 24, 2023 in the form required under and subject to the other requirements of the applicable rules of the SEC. If the date of the Annual Meeting to be held in 2024 is changed to a date more than 30 days earlier or later than May 9, 2024, the Company will inform the stockholders in a timely fashion of such change and the date by which proposals of stockholders must be received for inclusion in the proxy materials. Any such proposal should be submitted by certified mail, return receipt requested, or other means, including electronic means, that allow the stockholder to prove the date of delivery.

If a stockholder intends to present a proposal at the 2024 Annual Meeting without any discussion of the proposal in our proxy statement, and the stockholder does not notify us of such proposal on or before February 7, 2024 as required by SEC Rule 14a-4(c)(1), then proxies received by us for the 2024 Annual Meeting will be voted by the persons named as such proxies in their discretion with respect to such proposal. Notice of any such proposal is to be sent to the address set forth below.

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| # OTHER INFORMATION

If any matter not described herein should properly come before the Annual Meeting, the persons named in the proxy will vote the shares represented by them as they deem appropriate. At the date of this Proxy Statement, the Company knew of no other matters which might be presented for stockholder action at the Annual Meeting.

Consolidated financial statements for the Company are included in the Annual Report to Stockholders for the year ended December 25, 2021 that accompanies this Proxy Statement. These financial statements are also on file with the SEC, 100 F Street, N.E., Washington, D.C. 20549 and with the NYSE. The Company’s SEC filings are also available at the Company’s website at www.muellerindustries.com or the SEC’s website at www.sec.gov.

A COPY OF THE COMPANY’S ANNUAL REPORT ON FORM 10-K AS FILED FOR THE YEAR ENDED DECEMBER 25, 2021 (EXCLUDING EXHIBITS) OR, AS NOTED HEREIN, ANY OF THE COMPANY’S BOARD COMMITTEE CHARTERS, CORPORATE GOVERNANCE GUIDELINES, OR CODE OF ETHICS WILL BE FURNISHED, WITHOUT CHARGE, BY WRITING TO CHRISTOPHER J. MIRITELLO, CORPORATE SECRETARY, MUELLER INDUSTRIES, INC., AT THE COMPANY’S PRINCIPAL PLACE OF BUSINESS (150 SCHILLING BOULEVARD, SUITE 100, COLLIERVILLE, TENNESSEE 38017). UPON RECEIPT BY WRITING TO THE FOREGOING ADDRESS, THE COMPANY WILL ALSO FURNISH ANY OTHER EXHIBIT OF THE ANNUAL REPORT ON FORM 10-K UPON ADVANCE PAYMENT OF THE REASONABLE OUT-OF-POCKET EXPENSES OF THE COMPANY RELATED TO THE COMPANY’S FURNISHING OF SUCH EXHIBIT.

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 49

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## — NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE 2023 ANNUAL MEETING TO BE HELD ON MAY 4, 2023

The Proxy Statement and Annual Report are available at: http://www.proxyvote.com

You will need the Control Number included on your proxy card. For the date, time, and location of the Annual General Meeting, please refer to “Solicitation of Proxies.” For information on how to attend and vote in person at the Annual General Meeting, an identification of the matters to be voted upon at the Annual General Meeting and the Board’s recommendations regarding those matters, please refer to “Solicitation of Proxies,” “Election of Directors,” “Appointment of Independent Registered Accounting Firm”, “Approval of the Compensation of the Company’s Named Executive Officers and “Advisory Vote on Frequency of the Stockholder Vote on the Compensation of the Company’s Named Executive Officers.”

## — HOUSEHOLDING OF ANNUAL MEETING MATERIALS

The SEC has enacted a rule that allows multiple investors residing at the same address the convenience of receiving a single copy of annual reports, proxy statements, prospectuses and other disclosure documents if they consent to do so. This is known as “Householding.” Please note, if you do not respond, Householding will start 60 days after the mailing of this notice. We will allow Householding only upon certain conditions. Some of those conditions are:

| • | You agree to or do not object to the Householding of your materials,
| • | You have the same last name and exact address as another investor(s).

If these conditions are met, and SEC regulations allow, your household will receive a single copy of annual reports, proxy statements, prospectuses and other disclosure documents.

You may revoke a prior Householding consent at any time by contacting Broadridge, either by calling toll-free at (800) 542-1061, or by writing to Broadridge, Householding Department, 51 Mercedes Way, Edgewood, New York, 11717. We will remove you from the Householding program within 30 days of receipt of your response, following which you will receive an individual copy of our disclosure document.

By order of the Board of Directors

Christopher J. Miritello
Corporate Secretary

MUELLER INDUSTRIES ● 2023 PROXY STATEMENT 50

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#### ANNUAL MEETING

The Annual Meeting of Stockholders will be held at the Company’s headquarters at 150 Schilling Boulevard, Second Floor, Collierville, TN 38017, 8:00 a.m. local time (CDT), May 4, 2023.

#### CAPITAL STOCK INFORMATION

The Company declared and paid a quarterly cash dividend of 25 cents per common share in each quarter of 2022. Payment of dividends in the future is dependent upon our financial condition, cash flows, capital requirements, and other factors.

#### COMMON STOCK

As of February 17, 2023, the number of holders of record of Mueller’s common stock was approximately 586.

#### NEW YORK STOCK EXCHANGE

On February 17, 2023, the closing price for Mueller’s common stock on the New York Stock Exchange was $74.53.

#### FORM 10-K

The Company’s Annual Report on Form 10-K is available on the Company’s website at www.muellerindustries.com or upon written request:

c/o Mueller Industries, Inc.
Attention: Investor Relations
150 Schilling Blvd., Suite 100
Collierville, TN 38017

#### NYSE CERTIFICATIONS

The Company submitted an unqualified Section 12(a) CEO Certification to the NYSE in 2022. The Company filed with the SEC the CEO/CFO Certifications required under Section 302 of the Sarbanes-Oxley Act as an exhibit to the Company’s Annual Report on Form 10-K for 2022 and 2021.

#### MARKET FOR MUELLER INDUSTRIES SECURITIES

Common stock is traded on the NYSE (MLI).

#### TRANSFER AGENT, REGISTRAR & PAYING AGENT

To notify the Company of address changes, lost certificates, dividend payments, or account consolidations, security holders should contact:

American Stock Transfer & Trust Company, LLC

Shareholder Services Department

6201 15th Avenue

Brooklyn, NY 11219

Toll Free: (800) 937-5449

Local & International: (718) 921-8124

Email: help@astfinancial.com

Website: www.astfinancial.com

BOARD OF DIRECTORS

### Gregory L. Christopher, Chairman
Terry Hermanson, Lead Independent Director
Elizabeth Donovan
William C. Drummond

Gary S.Gladstein

Scott J. Goldman
John B. Hansen
Charles P. Herzog, Jr.

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