UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No. )

Filed by the Registrant  x

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))

x Definitive Proxy Statement

¨ Definitive Additional Materials

¨ Soliciting Material under §240.14a-12

MATERION CORPORATION

(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):

x 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)(4) and 0-11

Materion Corporation

6070 Parkland Boulevard

Mayfield Heights, Ohio 44124

Notice of Annual Meeting of Shareholders

The annual meeting of shareholders of Materion Corporation will be held at the Renaissance Providence Downtown Hotel, 5 Avenue of the Arts, Providence, Rhode Island 02903, on May 9, 2024 at 8:00 a.m. (EDT) for the following purposes:

(1)To elect nine directors, each to serve for a term of one year and until a successor is elected and qualified;

(2)To ratify the appointment of Ernst & Young LLP as the independent registered public accounting firm for Materion Corporation for the year 2024;

(3)To approve, by non-binding vote, named executive officer compensation; and

(4)To transact any other business that may properly come before the meeting.

Shareholders of record as of the close of business on March 15, 2024 are entitled to notice of the meeting and to vote at the meeting or any adjournment or postponement of the meeting.

We are pleased to take advantage of the Securities and Exchange Commission rules allowing us to furnish proxy materials to shareholders on the Internet. We believe that these rules provide you with proxy materials more quickly and reduce the environmental impact of our meeting. Accordingly, we are mailing to shareholders a Notice of Internet Availability of Proxy Materials containing instructions on how to access and review our proxy statement and Annual Report for the year ended December 31, 2023, and to vote online or by telephone. If you would like to receive a paper copy of our proxy materials, please follow the instructions for requesting these materials on the Notice of Internet Availability of Proxy Materials.

Gregory R. Chemnitz

Secretary

March 26, 2024

Important — your proxy is enclosed.

You are requested to cooperate in assuring a quorum by voting online at www.proxyvote.com or, if you received a paper copy of the proxy materials, by filling in, signing and dating the enclosed proxy and promptly mailing it in the return envelope.

MATERION CORPORATION

6070 Parkland Boulevard

Mayfield Heights, Ohio 44124

PROXY STATEMENT

March 26, 2024

GENERAL INFORMATION

Your Board of Directors (Board) is furnishing this proxy statement to you in connection with our solicitation of proxies to be used at our annual meeting of shareholders to be held on May 9, 2024. The proxy statement and other proxy materials are being sent to shareholders on March 26, 2024.

Registered Holders. If your shares are registered in your name, you may vote in person or by proxy. If you decide to vote by proxy, you may do so by telephone, over the Internet or by mail.

By telephone. After reading the proxy materials, you may call the toll-free number, 1-800-690-6903, using a touch-tone telephone. You will be prompted to enter your control number, which is a 16-digit number located in a box on your proxy card that you can also receive in the mail, if requested, then follow the simple instructions that will be given to you to record your vote.

Over the Internet. After reading the proxy materials, you may vote and submit your proxy online at www.proxyvote.com. Even if you request and receive a paper copy of the proxy materials, you may vote online by going to www.proxyvote.com and entering your control number, which is a 16-digit number located in a box on your proxy card that you can also receive in the mail, if requested, then follow the simple instructions that will be given to you to record your vote.

By mail. After reading the proxy materials, you may mark, sign and date your proxy card and return it in the enclosed prepaid and addressed envelope.

The Internet and telephone voting procedures have been set up for your convenience and have been designed to authenticate your identity, allow you to give voting instructions and confirm that those instructions have been recorded properly. Without affecting any vote previously taken, you may revoke your proxy by delivery to us of a new, later dated proxy with respect to the same shares, or giving written notice to us before or at the annual meeting. Your presence at the annual meeting will not, in and of itself, revoke your proxy.

Participants in the Materion Corporation Retirement Savings Plan. If you participate in the Retirement Savings Plan, the independent trustee for the plan, Fidelity Management Trust Company, will vote your plan shares according to your voting directions. You may give your voting directions to the plan trustee in any one of the three ways set forth above. If you do not return your proxy card or do not vote over the Internet or by telephone, the trustee will not vote your plan shares. Each participant who gives the trustee voting directions acts as a named fiduciary for the applicable plan under the provisions of the Employee Retirement Income Security Act of 1974, as amended.

Nominee Shares. If your shares are held by a bank, broker, trustee or some other nominee, that entity will give you separate voting instructions.

In addition to the solicitation of proxies by mail, we may solicit the return of proxies in person, by telephone, facsimile or e-mail. We will request brokerage houses, banks and other custodians, nominees and fiduciaries to forward soliciting material to the beneficial owners of shares and will reimburse them for their expenses. We will bear the cost of the solicitation of proxies.

Voting. At the close of business on March 15, 2024, the record date for the determination of shareholders entitled to notice of, and to vote at, the annual meeting, there were 20,730,895 shares of common stock outstanding and entitled to vote at the meeting. Each outstanding share of common stock entitles its holder to one vote on each matter brought before the meeting.

With respect to Proposal 1, the nominees receiving the greatest number of votes for their election will be elected as directors of Materion Corporation, subject to the Company's Majority Voting Policy (described below). The approval of each of Proposals 2 and 3 requires the affirmative vote of a majority of the votes cast, whether in person or by proxy, on such proposals at the annual meeting.

Abstentions and Broker Non-votes. At the annual meeting, the inspectors of election appointed for the meeting will tabulate the results of shareholder voting. Under Ohio law and our Code of Regulations, properly signed proxies that are marked “abstain” or are held in “street name” by brokers and not voted on one or more of the items (but otherwise voted on at least one item) before the meeting will be counted for purposes of determining whether a quorum has been achieved at the annual meeting.

If you do not provide directions to your broker, your broker or other nominee will not be able to vote your shares with respect to the election of directors (Proposal 1) or the non-binding vote to approve named executive officer compensation (Proposal 3).

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Abstentions and broker non-votes will not affect the vote on the election of directors.

An abstention or broker non-vote with respect to the non-binding vote to approve named executive officer compensation (Proposal 3) will have no effect on the proposal as the abstention or broker non-vote will not be counted in determining the number of votes cast.

Because the vote to ratify the appointment of Ernst & Young LLP (Proposal 2) is considered to be routine, your broker or other nominee will be able to vote your shares with respect to this proposal without your instructions. An abstention will have no effect on this proposal as the abstention will not be counted in determining the number of votes cast.

*        *        *

We know of no other matters that will be presented at the meeting; however, if other matters do properly come before the meeting, the persons named in the proxy card will vote on these matters in accordance with their best judgment.

If you sign, date and return your proxy card but do not specify how you want to vote your shares, your shares will be voted as recommended by the Board as indicated on the proxy card.

PROPOSAL ONE: ELECTION OF DIRECTORS

Our Articles of Incorporation and Code of Regulations establish the number of directors at no fewer than nine and no more than 18. There are currently nine directors on the Board. At the 2024 Annual Meeting, the shareholders will consider the election of nine directors, each to serve a one-year term. Each of the nominees for election is a current Director.

Nominees for Director

Vinod M. Khilnani

Age: 71

Director Since: 2009

Mr. Khilnani was appointed our Non-Executive Chairman of the Board in January 2018. Now retired, Mr. Khilnani was the Executive Chairman of CTS Corporation (electronic components and accessories). Mr. Khilnani became Executive Chairman of CTS Corporation in January 2013 and served in that capacity until May 2013. He had served as Chairman, President and Chief Executive Officer of CTS from 2007 until 2013. Prior to that time, he served as Senior Vice President and Chief Financial Officer of CTS since 2001. Mr. Khilnani was appointed to the Board of Gibraltar Industries in October 2014 and to the Board of ESCO Technologies Inc. in August 2014. Mr. Khilnani also served on the Board of Directors of 1st Source Corporation since 2013 until his retirement from that Board in 2023. As the former Executive Chairman and Chief Executive Officer and President of CTS (and its former Chief Financial Officer), Mr. Khilnani offers a wealth of management experience and business knowledge regarding operational, financial and corporate governance issues, as well as extensive international experience with global operations.

Emily M. Liggett

Age: 68

Director Since: 2020

Ms. Liggett has served as the Chief Executive Officer of Liggett Advisors (business strategy and execution consulting) since 2017. Prior to that, Ms. Liggett served as President and Chief Executive Officer of NovaTorque, Inc. (manufacturer of high-efficiency electric motor systems) from 2009 until 2016, when it was acquired by Regal Beloit; Apexon, Inc. (provider of supply chain optimization software solutions for global manufacturers) from 2004 until 2007; and Capstone Turbine Corporation (provider of microturbine systems for clean, continuous distributed energy generation) from 2002 until 2003. Prior to Capstone Turbine, Ms. Liggett served in various management and executive roles at Raychem Corporation (manufacturer of materials, electronics, telecom and energy products acquired by Tyco International in 1999) from 1984 until 2001, including as Corporate Vice President of Raychem and Managing Director of Tyco Ventures. Ms. Liggett has served on the Board of Directors of Ultra Clean Holdings, Inc. since 2014 and previously served on the Boards of Directors of Kaiser Aluminum Corporation from 2018 until 2022 and MTS Systems Corporation from 2010 until 2016. She also served on the Purdue University School of Engineering Advisory Board from 2000 until 2018. Ms. Liggett's expertise in strategy, operations, product development, sales, marketing and business development gained from her chief executive officer, management and public company board experience in a variety of international industrial companies provides our Board of Directors with valuable insights.

Robert J. Phillippy

Age: 63

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Director Since: 2018

Mr. Phillippy is an independent consultant, advising technology companies on a range of strategic, operational and organizational issues. From September 2007 until April 2016, he was the President, Chief Executive Officer and a director of Newport Corporation (lasers, optics and photonics technologies). Mr. Phillippy joined Newport in 1996 and served in various executive management positions prior to his appointment as Chief Executive Officer in 2007. In April 2016, Newport was acquired by MKS Instruments (instruments, components, subsystems, and process control solutions for advanced manufacturing applications), and from July 2016 until May 2018, Mr. Phillippy served on the board of directors of MKS Instruments. From April 2016 to September 2016, he also served as Executive Advisor to MKS Instruments. Mr. Phillippy has also served as a director of ESCO Technologies Inc. since May 2014 and as a director of Kimball Electronics since November 2018. Mr. Phillippy's deep understanding of technology-related industries, extensive experience as the former Chief Executive Officer of a global technology company and significant knowledge of matters impactful to public company boards makes him a valuable contributor to the Board of Directors.

Patrick Prevost

Age: 68

Director Since: 2019

Mr. Prevost served as the President and Chief Executive Officer of Cabot Corporation (global specialty chemical and performance materials company) from January 2008 until his retirement in March 2016. Prior to Cabot, Mr. Prevost served as President, Performance Chemicals at BASF AG (international chemical company) from October 2005 to December 2007. Prior to that, he was responsible for BASF Corporation’s Chemicals and Plastics business in North America. Mr. Prevost previously held senior management positions with increasing responsibility at BP Plc from 1999 to 2003 and Amoco Chemicals from 1983 until 1999. Mr. Prevost serves on the Board of Directors of Southwestern Energy Company and previously served on the Board of Directors of Cabot Corporation and General Cable Corporation. Mr. Prevost also serves as trustee of the New England Conservatory and the French Cultural Center of Boston. Mr. Prevost brings to our Board of Directors substantial leadership experience in a variety of complex international businesses, a chemical engineering background with broad experience in material science and chemistry, which are important to our business, extensive experience involving acquisitions and strategic alliances and deep knowledge of international business, strategic planning, manufacturing and financial matters.

N. Mohan Reddy, Ph.D.

Age: 70

Director Since: 2000

Dr. Reddy is B. Charles Ames, Professor of Management at Case Western Reserve University. Dr. Reddy was appointed B. Charles Ames, Professor of Management in February 2014. Prior to that, he had served as the Albert J. Weatherhead III Professor of Management from 2007 until 2012 and as the Dean of the Weatherhead School of Management, Case Western Reserve University from 2006 until 2012. Dr. Reddy had been Associate Professor of Marketing since 1991 and Keithley Professor of Technology Management from 1996 to 2006 at the Weatherhead School of Management, Case Western Reserve University. Dr. Reddy had served on the Board of Directors of Keithley Instruments, Inc. from 2001 until December 2010, when Keithley Instruments was purchased by Danaher Corporation. Dr. Reddy had also served on the Board of Directors of Lubrizol Corporation from February 2011 until October 2011, when Lubrizol was purchased by Berkshire Hathaway Inc . Dr. Reddy also serves as a consultant to firms in the electronics and semiconductor industries, primarily in the areas of product and market development. Dr. Reddy’s knowledge of industrial marketing, technology development and extensive global knowledge in the electronics and semiconductor industries provides valuable insight to our Board of Directors.

Craig S. Shular

Age: 71

Director Since: 2008

Mr. Shular is Co-Founder of Global Graphite Group LLC (advanced materials company specializing in graphite products), which he co-founded in November 2017. Mr. Shular is the former Executive Chairman of the Board of GrafTech International Ltd. (electrical industrial apparatus). Mr. Shular was elected Chairman of the Board of GrafTech in 2007 and served in that capacity until December 2014. He had been a director of GrafTech from January 2003 until May 2014. Mr. Shular served as Chief Executive Officer of GrafTech from 2003 and as President from 2002 until he retired from both positions in January 2014. From 2001 until 2002, he served as Executive Vice President of GrafTech’s largest business, Graphite Electrodes. Mr. Shular joined GrafTech as its Vice President and Chief Financial Officer in 1999 and assumed the additional duties of Executive Vice President, Electrode Sales and Marketing in 2000 until 2001. As the former Chairman, Chief Executive Officer and President and former Chief Financial Officer of GrafTech, Mr. Shular brings a breadth of financial and operational management experience and provides our Board of Directors with a perspective of someone familiar with all facets of a global enterprise.

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Darlene J. S. Solomon, Ph.D.

Age: 65

Director Since: 2011

Dr. Solomon served as Senior Vice President and Chief Technology Officer of Agilent Technologies, Inc. (life sciences, diagnostics and applied chemical markets) from 2006 until she retired from that position in July 2023. In addition to her leadership in organic research and development she is expert in open innovation, having developed and led Agilent’s industry-leading, enterprise-wide academic collaboration and corporate venture programs. Prior to 2006, she served as Vice President and Director of Agilent Laboratories, Agilent's centralized advanced research organization. Dr. Solomon has served on the Board of Directors of Novanta Inc. since 2022. She is a member of the National Academy of Engineering and serves on multiple industry, academic and government advisory boards focused on science, technology, and innovation. As a global senior technology business executive with deep experience in corporate governance, transformation, and high-tech industry, she brings valuable perspective in strategy, innovation, and digital leadership in support of profitable core and adjacent business growth. Additionally, with extensive knowledge and experience in materials measurement and leading innovation in a diversified global technology enterprise, Dr. Solomon brings to our Board of Directors valuable insight on research and development and other operational issues faced by companies focused on innovations in technology.

Robert B. Toth

Age: 63

Director Since: 2013

Mr. Toth was a Managing Director of CCMP Capital Advisors, LLC (global private equity investment firm) from 2016 to 2019. Mr. Toth also served as President, Chief Executive Officer and Director of Polypore International, Inc. (high technology filtration products) from 2005 until 2015 and as Chairman of the Board from 2011 until 2015. Prior to Polypore, Mr. Toth served as President, Chief Executive Officer, and Director of CP Kelco ApS. Mr. Toth also spent 19 years at Monsanto Company, and its spin-off company, Solutia Inc., where he held a variety of executive and managerial roles. Mr. Toth serves on the Board of Directors of SPX Technologies. He also served on the Board of Directors of PQ Corporation and Hayward Industries, Inc. Mr. Toth currently acts as an advisor for several private equity firms. With extensive experience in leading corporations in the manufacturing and specialty materials sector, including his knowledge and skills in senior management, finance and operations, Mr. Toth brings to our Board of Directors significant insight into the strategic and operational issues facing companies in the advanced materials industry.

Jugal K. Vijayvargiya

Age: 56

Director Since: 2017

Mr. Vijayvargiya is President and Chief Executive Officer and member of the Board of Materion Corporation. He joined Materion as President and Chief Executive Officer in March 2017. Prior to joining Materion, Mr. Vijayvargiya had an extensive 26-year international career with Delphi Automotive PLC (leading global technology solutions provider to the automotive and transportation sectors). He most recently led Delphi's Automotive Electronics and Safety segment, a $3 billion global business based in Germany. In this role, Mr. Vijayvargiya served as an officer of Delphi and a member of its Executive Committee. Previously, he attained progressively responsible positions in Europe and North America in product and manufacturing engineering, sales, product line management, acquisition integration and general management. Mr. Vijayvargiya has served as a member of the Board of Directors of Sensata Technologies Holding PLC since June 2023. Mr. Vijayvargiya’s broad and diverse experience at Delphi and as Chief Executive Officer of Materion provides significant value to our Board of Directors.

BOARD OF DIRECTORS SKILL MATRIX

Our Board is comprised of members with varied experiences and backgrounds, which we believe enables thoughtful decision making. The skills matrix below provides an overview of the levels of experience that each of our Board members has in areas that impact our business. Each mark * indicates an experiential strength that was self-selected by each director.

Your Board of Directors unanimously recommends a vote for each of Vinod M. Khilnani, Emily M. Liggett, Robert J. Phillippy, Patrick Prevost, N. Mohan Reddy, Ph.D., Craig S. Shular, Darlene J. S. Solomon, Ph.D., Robert B. Toth, and Jugal K. Vijayvargiya.

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If any of these nominees becomes unavailable, it is intended that the proxies will be voted as the Board of Directors determines. We have no reason to believe that any of the nominees will be unavailable. The nominees receiving the greatest number of votes for their election will be elected as directors of Materion Corporation. However, our Board of Directors has adopted a Majority Voting Policy whereby, in an uncontested election, any nominee for director who receives a greater number of votes “withheld” from his or her election than votes “for” his or her election is expected to tender his or her resignation following certification of the shareholder vote, subject to a 90-day review process by our Nominating, Governance, and Corporate Responsibility Committee and Board of Directors to consider whether the tendered resignation should be accepted. An abstention or broker non-vote is not treated as a vote “withheld” under our Majority Voting Policy. For additional details on the Majority Voting Policy, see page 9 of this proxy statement.

CORPORATE GOVERNANCE; CORPORATE RESPONSIBILITY

Materion is committed to strong corporate governance, as evidenced by the following practices.

Board Independence

ü 8 of 9 Director nominees are independent ü Independent Chair of the Board

Director Elections

ü Commitment to Board refreshment and diversity – 4 new Directors added since the beginning of 2017 ü All standing committee members are independent ü Declassified Board with annual Board election ü Director elections are subject to our Majority Voting Policy, which requires any Director who fails to receive a majority of the votes cast in favor of his or her election to submit his or her resignation to the Board

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Board Practices	ü Stock ownership requirements for nonemployee Directors (4x cash retainer) ü At each Board meeting, the independent Directors have the opportunity to conduct an executive session ü Annual Board, committee and Director evaluation ü Audit and Risk Committee refreshment with new Chairman and 50% new membership ü Compensation and Human Capital Committee refreshment with new Chairman and 50% new membership
Shareholder Rights	ü Limitations on adoption of shareholder rights plan ü Opted out of Ohio Control Shareholder Act
Other Best Practices	ü Annual advisory vote on our named executive officer compensation ü 5 of 9 Directors are ethnically or gender diverse ü Code of Conduct Policy for Directors, officers and employees ü 2 Audit Committee financial experts ü Audit and Risk Committee receives at least quarterly reports on information technology and cyber risk profile, enterprise cyber program and key enterprise cyber initiatives and annually reviews and recommends our information security policy and information security program to Board for approval ü Nominating, Governance and Corporate Responsibility Committee provides oversight for strategies regarding key environmental (including climate change), health and safety, sustainability and social responsibility matters.

We have adopted a Policy Statement on Significant Corporate Governance Issues and a Code of Conduct Policy in compliance with the New York Stock Exchange (NYSE) and Securities and Exchange Commission (SEC) requirements. These materials, along with the charters of the Audit and Risk, Compensation and Human Capital, and Nominating, Governance, and Corporate Responsibility Committees of our Board, which also comply with applicable requirements, are available on our website at https://materion.com, or upon request by any shareholder to: Secretary, Materion Corporation, 6070 Parkland Boulevard, Mayfield Heights, Ohio 44124. We also make our reports on Forms 10-K, 10-Q and 8-K available on our website, free of charge, as soon as reasonably practicable after these reports are filed with the SEC. Any amendments or waivers to our Code of Conduct Policy, Committee Charters and Policy Statement on Significant Corporate Governance Issues will also be made available on our website. The information on our website is not incorporated by reference into this proxy statement or any of our periodic reports.

Director Independence

The NYSE listing standards require that all listed companies have a majority of independent directors. For a director to be “independent” under the NYSE listing standards, the board of directors of a listed company must affirmatively determine that the director has no material relationship with the Company, or its subsidiaries or affiliates, either directly or as a partner, shareholder or officer of an organization that has a relationship with the Company, or its subsidiaries or affiliates. Our Board has adopted the following standards, which are identical to those of the NYSE listing standards, to assist in its determination of director independence. A director will be determined not to be independent under the following circumstances:

•the director is, or has been within the last three years, an employee of the Company, or an immediate family member is, or has been within the last three years, an executive officer of the Company;

•the director has received, or has an immediate family member who has received, during any 12-month period within the last three years, more than $120,000 in direct compensation from the Company, other than director and committee fees and pension or other forms of deferred compensation for prior service (provided such compensation is not contingent in any way on continued service);

•the director (a) is a current partner or employee of a firm that is the Company’s internal or external auditor; (b) has an immediate family member who is a current partner of such a firm; (c) has an immediate family member who is a current employee of such a firm and personally works on the Company’s audit; or (d) was or has an immediate family member who was within the last three years a partner or employee of such a firm and personally worked on the Company’s audit within that time;

•the director or an immediate family member is, or has been within the last three years, employed as an executive officer of another company where any of the Company’s present executive officers at the same time serve or served on that company’s compensation committee; or

•the director is a current employee, or an immediate family member is a current executive officer, of a company that has made payments to, or received payments from, the Company for property or services in an amount which, in any of the last three fiscal years, exceeds the greater of $1,000,000 or two percent of such other company’s consolidated gross revenues.

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Additionally, for purposes of determining whether a director has a material relationship with the Company apart from his or her service as a director, our Board has deemed the following relationships as categorically immaterial:

•the director, or an immediate family member, is a current employee, director or trustee of a tax-exempt organization and the Company’s contributions to the organization (excluding Company matching of employee contributions) in any fiscal year are less than $120,000; or

•the director is a director of a company that has made payments to, or received payments or deposits from, the Company for property, goods or services in the ordinary course of business in an amount which, in any fiscal year, is less than the greater of $1,000,000, or two percent of such other company’s consolidated gross revenues.

Our Board has affirmatively determined that each of our current directors, other than Mr. Vijayvargiya, is “independent” within the meaning of that term as defined in the NYSE listing standards and a “non-employee director” within the meaning of that term as defined in Rule 16b-3(b)(3) promulgated under the Securities Exchange Act of 1934 (Exchange Act).

Charitable Contributions

Within the preceding three years, we have not made a contribution to any charitable organization in which any of our directors serves as a director, trustee, or executive officer.

Non-management Directors and Non-Executive Chairman

Our Policy Statement on Significant Corporate Governance Issues provides that the non-management members of the Board will meet during each regularly scheduled meeting of the Board of Directors in executive session. Additional executive sessions may be scheduled by the Non-Executive Chairman or other non-management directors. The Non-Executive Chairman will chair these sessions. Mr. Khilnani was appointed our Non-Executive Chairman in January 2018.

The non-management directors have access to our management as they deem necessary or appropriate. In addition, the Chair of each of the Audit and Risk Committee, Nominating, Governance, and Corporate Responsibility Committee and Compensation and Human Capital Committee meets periodically with members of senior management.

In addition to the other duties of a director under our Policy Statement on Significant Corporate Governance Issues, the Non-Executive Chairman, in collaboration with the other independent directors, is responsible for coordinating the activities of the independent directors and in that role will:

•chair the executive sessions of the independent directors at each regularly scheduled meeting;

•determine the timing and structuring of Board meetings;

•establish the agenda for Board meetings, including allocation of time as well as subject matter;

•determine the quality, quantity and timeliness of the flow of information from management to the Board;

•serve as the independent point of contact for shareholders wishing to communicate with the Board other than through management;

•interview all Board candidates and provide the Nominating, Governance, and Corporate Responsibility Committee with recommendations on each candidate;

•maintain close contact with the Chairman of each standing committee and assist in ensuring communications between each committee and the Board;

•lead the Chief Executive Officer annual evaluation process; and

•be the ombudsman for the Chief Executive Officer to provide two-way communication with the Board.

Board Communications

Shareholders or other interested parties may communicate with the Board as a whole, the non-executive chairman or the non-management directors as a group, by forwarding relevant information in writing to: Non-Executive Chairman, c/o Secretary, Materion Corporation, 6070 Parkland Boulevard, Mayfield Heights, Ohio 44124. Any other communication to individual directors or committees of the Board of Directors may be similarly addressed to the appropriate recipients, c/o Secretary, Materion Corporation, 6070 Parkland Boulevard, Mayfield Heights, Ohio 44124.

Board Leadership

The Board does not have a policy as to whether the role of Chief Executive Officer and Chairman of the Board should be separate or combined, or whether the Chairman should be a management or non-management director. Currently, the roles of Chairman of the Board and Chief Executive Officer are split, though in the past these roles have been combined. Mr. Khilnani was appointed Non-Executive Chairman of the Board effective January 2018, eliminating the need for a Lead Director. During 2023, Mr. Vijayvargiya was the only member of our Board who was not independent.

Unless the Chairman of the Board is an independent director, a Lead Director would be elected solely by the independent members of our Board of Directors. The Lead Director works with the Chairman of the Board and other Board members to

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provide strong, independent oversight of the Company’s management and affairs as described above under "Non-management Directors and Non-Executive Chairman".

Risk Oversight

Our Board oversees an enterprise-wide approach to risk management, designed to support the achievement of organizational objectives, including strategic objectives, to improve long-term organizational performance and enhance shareholder value. A fundamental part of risk management is not only understanding the risks a company faces and what steps management is taking to manage those risks, but also understanding what level of risk is appropriate for the Company. The involvement of the full Board in setting the Company’s business strategy is a key part of its assessment of management’s appetite for risk and also a determination of what constitutes an appropriate level of risk for the Company.

While the Board has the ultimate oversight responsibility for the risk management process, various committees of the Board also have responsibility for risk management. In particular, the Audit and Risk Committee focuses on financial risk, including internal controls, and receives an annual risk assessment report from the Company’s internal auditors. The Audit and Risk Committee also focuses on risks relating to precious metal inventory, precious metal security and cybersecurity.

As part of its program of regular oversight, the Audit and Risk Committee is responsible for overseeing cyber risk, information security, and information technology risk, including management’s actions to identify, assess, mitigate, and remediate material cyber issues and risks. The Audit and Risk Committee receives at least quarterly reports from the Chief Information Officer on the Company’s information technology and cyber risk profile, enterprise cyber program, key enterprise cyber initiatives, and significant updates on external audits of our information security program. In 2023, the full Board attended one of the Audit and Risk Committee meetings at which information technology and cyber risk were discussed. Additionally, at least annually, the full Board attends a cybersecurity training session from external experts and reviews and discusses the Company’s technology strategy with the Chief Information Officer and approves the Company’s technology strategic plan.

In addition, management provides a risk management report, including a financial risk assessment and enterprise risk management update and information technology contingency plan, to the Audit and Risk Committee. In setting compensation, the Compensation and Human Capital Committee strives to create incentives that encourage a level of risk-taking consistent with the Company’s business strategy. Finally, the Company’s Nominating, Governance, and Corporate Responsibility Committee conducts an annual assessment of the Board in accordance with corporate governance and risk management best practices and additionally oversees the Company's risk with respect to climate change. The Company believes that the Board’s role in risk oversight is consistent with the Company’s leadership structure, with management having day-to-day responsibility for assessing and managing the Company’s risk exposure and the Board and its committees providing oversight in connection with those efforts, with particular focus on the most significant risks facing the Company.

Audit and Risk Committee

The Audit and Risk Committee held six meetings in 2023. The full Board attended two of the six Committee meetings in 2023. The Committee membership consists of Mr. Phillippy, as Chairman, Ms. Liggett, Mr. Toth and Dr. Reddy. Under the Committee charter, the Committee’s principal functions include assisting our Board in fulfilling its oversight responsibilities with respect to:

•the integrity of our financial statements and our financial reporting process;

•compliance with ethics policies and legal and other regulatory requirements;

•our independent registered public accounting firm’s qualifications and independence;

•our systems of internal accounting and financial controls;

•the performance of our independent registered public accounting firm and of our internal audit functions;

•assisting the Board in fulfilling its oversight responsibilities with respect to financial risk, including internal controls, as well as risks relating to precious metal security and cybersecurity; and

•other matters as deemed appropriate, including our Code of Conduct Policy and our risk management practices and policies.

No member of the Committee serves on the audit committee of three or more public companies in addition to ours unless the Board determines that such services would not impair the member's ability to serve on the Committee. The Committee also prepared the Committee report included under the heading “Audit Committee Report” in this proxy statement.

Audit and Risk Committee Expert, Financial Literacy and Independence

Our Board has determined that Messrs. Phillippy and Toth are "audit committee" financial experts, as defined by the SEC. Each member of the Audit and Risk Committee is financially literate and satisfies the independence requirements as set forth in the NYSE listing standards.

Compensation and Human Capital Committee

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The Compensation and Human Capital Committee held six meetings in 2023. The Committee membership consists of Mr. Shular, as Chairman, Dr. Solomon, and Messrs. Khilnani and Prevost. Each member of the Committee has been determined by the Board to be independent in accordance with NYSE listing standards. The Committee may, at its discretion, delegate all or a portion of its duties and responsibilities to a subcommittee, provided that such subcommittee has a published charter in accordance with NYSE rules. The Committee’s principal functions include:

•reviewing and approving executive compensation, including severance payments;

•overseeing and recommending equity and non-equity incentive plans;

•overseeing regulatory compliance with respect to compensation matters;

•advising on senior management compensation; and

•reviewing and discussing the Compensation Discussion and Analysis (CD&A) and Compensation Committee Report.

For additional information regarding the operation of the Committee, see the “Compensation Discussion and Analysis” in this proxy statement.

Nominating, Governance, and Corporate Responsibility Committee

The Nominating, Governance, and Corporate Responsibility Committee held five meetings in 2023. The Committee membership consists of Mr. Khilnani, as Chairman, Ms. Liggett, Messrs. Phillippy, Prevost, Shular, and Toth and Drs. Reddy and Solomon. All of the members are independent in accordance with the NYSE listing requirements. The Committee’s principal functions include:

•evaluating candidates for Board membership, including any nominations of qualified candidates submitted in writing by shareholders to our Secretary;

•making recommendations to the full Board regarding director compensation;

•making recommendations to the full Board regarding governance matters;

•overseeing Company strategies regarding key environmental (including the impact of climate change), health and safety, sustainability and social responsibility matters;

•overseeing the evaluation of the Board and management of the Company;

•evaluating potential successors to the Chief Executive Officer for recommendation to the Board and assisting in management succession planning; and

•reviewing related party transactions.

As noted above, the Committee is involved in determining compensation for our directors. The Committee administers our equity incentive plans with respect to our directors, including approval of grants of stock options and other equity or equity-based awards, and makes recommendations to the Board with respect to incentive compensation plans and equity-based plans for directors. The Committee periodically reviews director compensation in relation to comparable companies and other relevant factors. Any change in director compensation must be approved by the Board. No executive officer other than the Chief Executive Officer in his capacity as director participates in setting director compensation. From time to time, the Committee or the Board may engage the services of a compensation consultant to provide information regarding director compensation at comparable companies.

Annual Board Self-assessments

The Board has instituted annual self-assessments of the Board, as well as of the Audit and Risk Committee, the Compensation and Human Capital Committee and the Nominating, Governance, and Corporate Responsibility Committee, to assist in determining whether the Board and its committees are functioning effectively. Annually, each of the members of the Board completes a detailed survey regarding the Board and its committees that provides for quantitative ratings in key areas and seeks subjective comments. The results of the survey are compiled and discussed at the Board level and in each committee. Any matters requiring follow-up are identified by the Nominating, Governance, and Corporate Responsibility Committee, which is responsible for any action items. Each of the committees also reviews its charter on an annual basis for any changes.

Also in 2023, each member of the Board completed a confidential evaluation of each other director that, among other things, sought subjective comments in certain key areas. The responses to the evaluation were collected by a third party and a summary of the responses were conveyed to the Non-Executive Chairman. The Non-Executive Chairman used the results of the evaluation as part of the process the Nominating, Governance, and Corporate Responsibility Committee undertakes in determining whether to recommend that those directors be nominated for re-election.

Nomination of Director Candidates

The Nominating, Governance, and Corporate Responsibility Committee will consider candidates recommended by shareholders for nomination as directors of Materion Corporation. Any shareholder desiring to submit a candidate for consideration by the Committee should send the name of the proposed candidate, together with biographical data and background information concerning the candidate, to the Nominating, Governance, and Corporate Responsibility Committee, c/o Secretary, Materion Corporation, 6070 Parkland Boulevard, Mayfield Heights, Ohio 44124.

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In recommending candidates to the Board for nomination as directors, the Committee’s charter requires it to consider such factors as it deems appropriate, consistent with our Policy Statement on Significant Corporate Governance Issues. These factors are as follows:

•broad-based business, governmental, non-profit, or professional skills and experiences that indicate whether the candidate will be able to make a significant and immediate contribution to the Board’s discussion and decision-making in the array of complex issues facing the Company;

•exhibited behavior that indicates he or she is committed to the highest ethical standards and the values of the Company;

•special skills, expertise and background that add to and complement the range of skills, expertise and background of the existing directors;

•whether the candidate will effectively, consistently and appropriately take into account and balance the legitimate interests and concerns of all our shareholders and other stakeholders in reaching decisions;

•a global business and social perspective, personal integrity and sound judgment; and

•time available to devote to Board activities and to enhance their knowledge of the Company.

As part of the analysis of the foregoing factors, the Committee considers whether the candidate enhances the diversity of the Board. Such diversity includes professional background and capabilities, knowledge of specific industries and geographic experience, as well as the more traditional diversity concepts of race, gender and national origin. Additionally, the Board has adopted a diversity policy, which emphasizes that the Board is committed to enhancing its diversity. Pursuant to the diversity policy, in identifying and nominating new candidates for election to the Board, diversity on the Board, including the level of representation of women and under-represented groups, will influence succession planning and be a key criterion for the Committee. It is anticipated that the Committee will assess the effectiveness of the diversity policy as part of its annual self-assessment.

The Committee’s evaluation of candidates recommended by shareholders does not differ materially from its evaluation of candidates recommended from other sources.

The Committee utilizes a variety of methods for identifying and evaluating director candidates. The Committee regularly reviews the appropriate size of the Board and whether any vacancies on the Board are expected due to retirement or otherwise. In the event that vacancies are anticipated, or otherwise arise, the Committee considers various potential candidates for director. Candidates may come to the attention of the Committee through current Board members, professional search firms, shareholders or other persons. Additionally, from time to time, the Committee has used the services of an executive search firm to help identify potential director candidates who possess the characteristics described above. In such instance, the search firm has prepared a biography of each candidate, conducted reference checks and screened candidates.

A shareholder of record entitled to vote in an election of directors who timely complies with the procedures set forth in our code of regulations and with all applicable requirements of the Exchange Act and the rules and regulations thereunder, may also directly nominate individuals for election as directors at a shareholders’ meeting. Copies of our code of regulations are available by a request addressed to Materion Corporation, c/o Secretary, 6070 Parkland Boulevard, Mayfield Heights, Ohio 44124.

To be timely, notice of a shareholder nomination for an annual meeting must be received at our principal executive offices not fewer than 60 nor more than 90 days prior to the date of the annual meeting. However, if the date of the meeting is more than one week before or after the first anniversary of the previous year’s meeting and we do not give notice of the meeting at least 75 days in advance, nominations must be received within ten days from the date of our notice.

Majority Voting Policy

Our Board adopted a Majority Voting Policy whereby, in an uncontested election, any nominee for director who receives a greater number of votes “withheld” from his or her election than votes “for” election, which we refer to as a Majority Withheld Vote, is expected to tender his or her resignation following certification of the shareholder vote. In such an event, the Nominating, Governance, and Corporate Responsibility Committee will consider the tendered resignation and make a recommendation to the Board. The Board will act on the Committee’s recommendation within 90 days following certification of the shareholder vote. Any director who tenders his or her resignation pursuant to this policy will not participate in the Committee’s recommendation or Board’s action regarding whether to accept or reject the tendered resignation.

However, if each member of the Committee received a Majority Withheld Vote in the same election, then the Board would appoint a committee comprised solely of independent directors who did not receive a Majority Withheld Vote at that election to consider each tendered resignation offer and recommend to the Board of Directors whether to accept or reject each resignation. Further, if all of the director nominees received a Majority Withheld Vote in the same election, the Board would appoint a committee comprised solely of independent directors to consider each tendered resignation offer and recommend to the Board of Directors whether to accept or reject each resignation.

Director Attendance

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Our Board held five meetings in 2023. All of the current directors who were directors in 2023 attended at least 75% of the Board and assigned committee meetings during the period each individual served as a director during 2023. Our policy is that directors are expected to attend all meetings, including the annual meeting of shareholders. All of our directors attended last year’s annual meeting of shareholders.

Corporate Responsibility

For more than 90 years, Materion has helped our customers meet their greatest science and technology challenges. Our ability to deliver on our mission is rooted, in part, in our strong corporate responsibility practices towards our customers, our employees, and our operations and communities. We are committed to ensuring that our organization’s governance and operations are fully aligned with environmentally and socially responsible practices. Our corporate responsibility is structured around three focus areas:

Our Commitment - From our leadership team to the Board of Directors, strong governance, ethical operations and upholding compliance standards are vital to our organization's continued advancement.

Our People – Materion’s values and corporate culture define who we are, how we act, and what we believe is our responsibility to conducting business. And our diverse employee base, that embodies our culture, is the driving force behind our success.

Our Operations and Communities – Materion consistently strives to integrate a variety of sustainability-based initiatives in our own operations and in the communities where we operate, from more efficient use of energy and materials to educating our employees on how to better serve as stewards of the planet. We also require our business partners and suppliers to abide by the same responsible business standards and principles.

In 2023, our oversight and implementation of our corporate responsibility practices benefited from the following:

•Oversight by the Nominating, Governance and Corporate Responsibility (NGCR) Committee: In 2023, in addition to corporate governance, our NGCR Committee continued to exercise its oversight of environmental, sustainability and social responsibility matters significant to the Company. The NGCR Committee oversees and periodically reviews the Company’s strategies regarding key environmental (including climate change), health and safety, sustainability and social responsibility matters. NGCR Committee membership currently includes all of our independent directors, ensuring an integrated and aligned oversight approach to corporate responsibility. The NGCR Committee held five meetings in 2023 and the Company’s environmental and social responsibility initiatives and related matters, including but not limited to, matters relating to climate change, were discussed at each meeting.

•Executive oversight: Executive oversight of environmental and social matters is conducted by management through our steering committee, which is composed of leaders from multiple functions including operations, legal, human resources, finance, and purchasing. In addition, environmental and social matters are integrated into our risk oversight and enterprise-wide risk management approach. In support of these broad-based efforts, in 2021 Materion appointed a dedicated leadership position to support ongoing and new environmental and social responsibility activities and strategic initiatives globally, including, but not limited to, matters relating to climate change. In early 2022, we further appointed a global sustainability operations manager to support identification and deployment of best-in-class sustainability-focused operational programs, systems and processes across Materion operations globally.

•Diversity & Inclusion: We have an employee Diversity & Inclusion Council, established in 2020, that continues to oversee the progression of various initiatives in support of improving the maturity of our enterprise-wide inclusion practices. Some of these initiatives include the continued operation of Employee Resource Groups, supporting inclusive hiring practices, and the establishment of baseline metrics against which we measure ourselves.

Good corporate citizenship and our commitment to strong environmental and social responsibility practices for our people, our operations and our communities are important elements of our vision, mission and values at Materion. We conduct our business activities in accordance with these values. Additionally, the core of our business ethics is “doing the right thing.” This fundamental principle is what drives Materion to be a socially responsible business that meets the highest standards of ethics and professionalism. We strive to:

• Maintain the highest standards of health, safety and security;

• Produce materials that enable technologies to provide a safer and more sustainable environment;

• Design, manufacture and distribute products in a safe and environmentally responsible manner;

• Respect and protect human rights wherever we operate;

• Embrace a set of values where we partner in the betterment of our communities; and

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•Promote fair dealing and respect towards our customers, shareholders, employees, business partners and communities.

For more information about our corporate responsibility program, please see https://materion.com/about/environmental-social-and-governance. The information on our website is not incorporated by reference into this proxy statement.

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2023 Compensation of Non-Employee Directors

Total compensation of our non-employee directors for the year ended December 31, 2023 was as follows:

Name	Fees Earned or Paid in Cash ($)	Stock Awards(1) ($)	Total ($)
Vinod M. Khilnani	140,000	121,160	261,160
Emily M. Liggett	75,000	121,160	196,160
Robert J. Phillippy	82,500	121,160	203,660
Patrick Prevost(2)	75,000	121,160	196,160
N. Mohan Reddy	75,000	121,160	196,160
Craig S. Shular(2)	87,500	121,160	208,660
Darlene J. S. Solomon	75,000	121,160	196,160
Robert B. Toth	80,000	121,160	201,160

(1) The amounts in this column reflect the grant date fair value of time-based restricted stock unit (RSU) awards as computed in accordance with Financial Accounting Standards Board Accounting Standards Codification (FASB ASC) Topic 718.

(2) Mr. Prevost and Mr. Shular elected to defer 100% of their compensation in the form of deferred stock units, as described below under Deferred Compensation.

The following table presents the RSU awards granted to non-employee directors in 2023. Awards were made on May 18, 2023 and valued based on that day's closing price of $105.54. These awards in general will vest on May 18, 2024, if the individual remains as a director until that date. As of December 31, 2023, no other stock or option awards were outstanding for our non-employee directors.

Name	Restricted Stock Units
Vinod M. Khilnani	1,148
Emily M. Liggett	1,148
Robert J. Phillippy	1,148
Patrick Prevost	1,148
N. Mohan Reddy	1,148
Craig S. Shular	1,148
Darlene J. S. Solomon	1,148
Robert B. Toth	1,148

Annual Retainer Fees

In 2023, non-employee directors received an annual retainer fee in the amount of $65,000. Non-employee directors also received the following additional annual retainers: member of Compensation and Human Capital Committee, $5,000 ($15,000 for Chairmen, Mr. Toth $7,500/Mr. Shular $7,500); member of Audit and Risk Committee, $5,000 ($20,000 for Chairmen, Mr. Shular $10,000/ Mr. Phillippy $10,000); member of Nominating, Governance, and Corporate Responsibility Committee, $5,000 ($10,000 for Chairman, Mr. Khilnani); and Chairman of the Board, $60,000 (Mr. Khilnani).

Equity Compensation

Under the 2006 Non-Employee Director Equity Plan (Director Equity Plan), non-employee directors who continued to serve as directors following the 2023 annual meeting of shareholders received $120,000 worth of RSUs (subject to rounding) that will generally be paid out in common stock at the end of a one-year restriction period. These RSUs were granted on the day following the annual meeting. The number of RSUs granted is equal to $120,000 divided by the closing price of our common stock on the day of the annual meeting (subject to rounding).

In the event a new director is elected or appointed, common stock may be granted, at the Board's discretion, usually on the first business day following the election or appointment to the Board of Directors. This grant of common stock has typically been equal to $100,000 divided by the closing price of our common stock on the day the director is elected or appointed to the Board of Directors. The grant is expected to be prorated by multiplying such number of shares of common stock by a fraction (in no case greater than one), (1) the numerator of which is one plus the number of full quarters remaining in the calendar year in which such election or appointment occurs after the date such election or appointment occurs, and (2) the denominator of which is four. The Company does not issue any fractional shares.

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Deferred Compensation

Non-employee directors may defer all or a part of their annual retainer fees in the form of deferred stock units under the Director Equity Plan until ceasing to be a member of the Board of Directors or a date specified by the participant. A director may also elect to have RSUs or other stock awards granted under the Director Equity Plan deferred in the form of deferred stock units.

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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Security Ownership of Certain Beneficial Owners

The following information is set forth with respect to persons known to management to be the beneficial owners of more than 5% of Materion’s common shares as of December 31, 2023.

Name and Address of Beneficial Owner	Amount and Nature of Beneficial Ownership(1)		Percent of Class
BlackRock, Inc.	3,382,645	(2)	16.4	%
55 East 52nd Street
New York, NY 10055
The Vanguard Group	2,541,196	(3)	12.3	%
100 Vanguard Blvd.
Malvern, PA 19355
Capital Research Global Investors	1,347,538	(4)	6.5	%
333 South Hope Street, 55th Floor
Los Angeles, CA 90071
Dimensional Fund Advisors LP	1,222,472	(5)	5.9	%
6300 Bee Cave Road, Building One
Austin, TX 78746

(1) The information contained in this table, including related footnotes, is based on the Schedule 13G and Schedule 13D filings made by the beneficial owners identified herein.

(2) BlackRock, Inc. has sole investment power over 3,382,645 shares and sole voting power over 3,328,472 shares.

(3) The Vanguard Group has sole voting power over 0 shares, shared voting power over 37,655 shares, sole dispositive power over 2,484,469 shares and shared dispositive power over 56,727 shares. The amount beneficially owned totals 2,541,196 shares.

(4) Capital Research Global Investors has sole investment power and sole voting power over 1,347,538 shares.

(5) Dimensional Fund Advisors LP has sole investment power over 1,202,511 shares and sole voting power over 1,222,472 shares.

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Security Ownership of Directors and Named Executive Officers

The following table sets forth information with respect to the beneficial ownership of the Company’s common stock by each director and director nominee for election as a director of the Company, each of the named executive officers and all directors and executive officers as a group, as of January 31, 2024, unless otherwise indicated. The shareholders listed in the table have sole voting and investment power with respect to shares beneficially owned by them, unless otherwise indicated. Shares that are subject to stock appreciation rights (SARs) that may be exercised within 60 days of January 31, 2024 are reflected in the number of shares shown and in computing the percentage of Materion’s common stock beneficially owned by the person who owns those SARs.

Name	Number of Shares	Percent  of Class
Shelly M. Chadwick(2), (3)	29,146	*
Gregory R. Chemnitz(2), (3)	37,983	*
Vinod M. Khilnani(1)	35,152	*
Emily M. Liggett	3,877	*
Robert J. Phillippy(1)	14,743	*
Patrick Prevost(1)	11,912	*
N. Mohan Reddy(1)	43,546	*
Craig S. Shular(1)	53,614	*
Darlene J. S. Solomon	26,110	*
Robert B. Toth	24,519	*
Jugal K. Vijayvargiya(2), (3)	253,703	1.2%
All Directors and Executive Officers as a group (including the Named Executive Officers (11 persons))(4)	534,305	2.6%
*Less than 1% of Materion's outstanding common stock

(1)Includes deferred shares under the Director Plan as follows: Mr. Khilnani 18,639, Ms. Liggett 1,256, Mr. Phillippy 11,892, Mr. Prevost 11,912, Dr. Reddy 43,546 and Mr. Shular 47,705.

(2)Includes shares covered by SARs exercisable within 60 days of January 31, 2024 as follows: Mr. Vijayvargiya 131,284, Ms. Chadwick 10,696 and Mr. Chemnitz 7,646.

(3)Includes shares covered by RSUs and PRSUs vesting within 60 days of January 31, 2024 as follows: Mr. Vijayvargiya 29,814, Ms. Chadwick 9,866 and Mr. Chemnitz 7,538.

(4)Includes an aggregate of 196,845 shares subject to SARs/RSUs held by executive officers exercisable/vesting within 60 days of January 31, 2024 and an aggregate of 134,950 deferred shares held by directors.

Delinquent Section 16(a) Reports

Section 16(a) of the Exchange Act requires that certain of our officers, our directors and persons who beneficially own more than 10% of a registered class of our equity securities file reports of ownership and changes in ownership with the SEC. The SEC has established specific due dates for these reports and we are required to disclose in this proxy statement any known late filings or failures to file. Based solely on our review of Section 16 reports filed electronically with the SEC and written representations from certain reporting persons, we believe that during 2023 and for prior years, all Section 16(a) filing requirements applicable to those officers, directors and 10% shareholders were satisfied, except that, due to administrative error: (1) for each of our non-employee directors (Messrs. Khilnani, Phillippy, Prevost, Reddy, Shular and Toth and Mmes. Liggett and Solomon), one Form 4, reporting one transaction relating to the grant of restricted stock units, was filed late; (2) for Messrs. Khilnani, Phillippy, Prevost, Reddy and Shular, one additional Form 4 reporting two transactions each relating to additional restricted stock units and indirectly held common stock acquired up on the reinvestment of dividend equivalents, was filed late; (3) for Mr. Toth and Mmes. Liggett and Solomon, one Form 4, reporting one transaction each relating to additional restricted stock units acquired upon the reinvestment of dividend equivalents, was filed late; and (4) for each of Messrs. Chemnitz, Vijayvargiya and Zaranec and Ms. Chadwick, one Form 4, reporting one transaction each relating to additional restricted stock units acquired upon the reinvestment of dividend equivalents, was filed late.

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RELATED PARTY TRANSACTIONS

We recognize that transactions between any of our directors or executive officers and us can present potential or actual conflicts of interest and create the appearance that our decisions are based on considerations other than the best interests of our shareholders. Pursuant to its charter, the Nominating, Governance, and Corporate Responsibility Committee considers and makes recommendations to the Board with regard to possible conflicts of interest of Board members or management. The Board then makes a determination as to whether to approve the transaction.

The Committee reviews all relationships and transactions in which Materion Corporation and its directors and executive officers or their immediate family members are participants to determine whether such persons have a direct or indirect material interest. Our Secretary is primarily responsible for the development and implementation of processes and controls to obtain information from the directors and executive officers with respect to related person transactions in order to enable the Committee to determine, based on the facts and circumstances, whether Materion or a related person has a direct or indirect material interest in the transaction. As set forth in the Committee’s charter, in the course of the review of a potentially material related person transaction, the Committee considers:

•the nature of the related person’s interest in the transaction;

•the material terms of the transaction, including, without limitation, the amount and type of transaction;

•the importance of the transaction to the related person;

•the importance of the transaction to Materion;

•whether the transaction would impair the judgment of a director or executive officer to act in the best interest of Materion; and

•any other matters the Committee deems appropriate.

Based on this review, the Committee will determine whether to approve or ratify any transaction which is directly or indirectly material to Materion or a related person.

Any member of the Committee who is a related person with respect to a transaction under review may not participate in the deliberations or vote with respect to the approval or ratification of the transaction; however, such director may be counted in determining the presence of a quorum at a meeting of the Committee that considers the transaction. There were no related party transactions in 2023.

AUDIT COMMITTEE REPORT

The Audit and Risk 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 Company’s systems of internal controls. In fulfilling its oversight responsibilities, the Audit and Risk Committee reviewed the audited financial statements in the annual report with management, and discussed with management 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 and Risk Committee has discussed with the independent registered public accounting firm the matters required to be discussed by the applicable requirements of the Public Company Accounting Oversight Board and the SEC. The Audit and Risk Committee has received the written disclosures and the letter from the independent registered public accounting firm required by applicable requirements of the Public Company Accounting Oversight Board regarding the independent registered public accounting firm’s communications with the Audit and Risk Committee concerning independence, and has discussed with the independent registered public accounting firm such firm’s independence.

The Audit and Risk Committee discussed with the Company’s internal auditors and the independent registered public accounting firm the overall scope and plans for the respective audits. The Audit and Risk Committee meets with the internal auditors and the independent registered public accounting firm, 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. The Audit and Risk Committee held six meetings during 2023.

In reliance on these reviews and discussions, the Audit and Risk Committee recommended to the Board of Directors (and the Board has approved) that the audited financial statements be included in the Annual Report on Form 10-K for the year ended December 31, 2023 for filing with the SEC.

The current Audit and Risk Committee charter is available on our website at https://materion.com.

Robert J. Phillippy (Chairman)

Robert Toth

N. Mohan Reddy

Emily Liggett

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EXECUTIVE COMPENSATION

COMPENSATION DISCUSSION AND ANALYSIS

This Compensation Discussion and Analysis (CD&A) provides an overview of our executive compensation program and 2023 pay determinations for our named executive officers (NEOs), as shown below:

    Named Executive Officers        

    Jugal K. Vijayvargiya, President and Chief Executive Officer

Shelly M. Chadwick, Vice President, Finance and Chief Financial Officer

Gregory R. Chemnitz, Vice President, General Counsel and Secretary

This CD&A consists of the following three sections:

    Section I:     Executive Summary - 2023 in Review

    Section II:     Executive Compensation Program Overview

    Section III:     Details and Analysis of the 2023 Executive Compensation Program

Section I: Executive Summary - 2023 in Review

Materion Corporation has a long-standing and strong commitment toward pay-for-performance in its executive compensation program. We maintain this orientation throughout economic cycles that may cause fluctuation in our operating results.

We believe the decisions regarding our NEO compensation program in 2023 described in the CD&A below reflect our ongoing commitment to sustaining our pay-for-performance philosophy.

2023 Company Performance Overview(1)

2023 was another year of strong operational, financial, and strategic performance, including some all-time record results.

During 2023, the Company continued to face significant headwinds from semiconductor market weakness, which resulted in a slight decrease in net sales from 2022 from $1,757.1 million in 2022 to $1,665.2 million in 2023. Internally, the Company manages the business based on value-added sales, which is a non-GAAP financial measure that removes the impact of pass-through metal costs and allows for analysis without the distortion of the movement or volatility in metal prices and changes in mix due to customer-supplied material. Value-added sales of $1,127.1 million in 2023 were up approximately 1% compared to 2022. The increase was due to strong contribution from new business opportunities as well as increased demand in the aerospace and defense end market, partially offset by decreased demand in the semiconductor and industrial end markets.

A reconciliation of net sales, the most directly comparable GAAP financial measure, to value-added sales is included herein in Appendix A.

Despite these market challenges, the Company delivered record operating profit of $136.4 million in 2023, compared to operating profit of $119.8 million in 2022, an increase of approximately 14%. The increase in operating profit was largely driven by a favorable mix impact from new business, operational improvements, including targeted cost improvement initiatives implemented in 2023 and the favorable impact of the manufacturers production credit recorded in 2023 as a result of the Inflation Reduction Act of 2022. See the Company's Annual Report on Form 10-K for the year ended December 31, 2023 for further discussion regarding the manufacturers production credit.

Net income was $95.7 million, or $4.58 per share, diluted, in 2023, compared to $86.0 million, or $4.14 per share in 2022. Adjusted net income (excluding acquisition amortization) per diluted share was $5.64 in 2023, compared to $5.27 in 2022 driven by the factors impacting operating profit plus favorable tax expense, partially offset by higher interest expense. Adjusted EBIT is a non-GAAP financial measure that removes interest and tax expense from net income and also excludes special items related to mergers and acquisition costs, restructuring costs, and additional start up resources and scrap. Adjusted EBIT for 2023 totaled $156.1 million, compared to $142.6 million in 2022, an increase of approximately 9% driven by the items mentioned above related to the growth of operating profit year-over-year. With above market growth and strong operational performance, the Company delivered records in value-added sales, adjusted EBIT, and adjusted EPS in 2023.

The Company generated strong operating cash flow of $144.4 million in 2023 and maintains more than adequate liquidity while still investing in organic growth in 2023. The Company has borrowing capacity of $178.7 million as of December 31, 2023.

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Record results and continued growth led to stock appreciation well above the Company's peer group and the market as noted in the chart below.

(1) See Appendix A for a definition of value-added sales and a reconciliation of non-GAAP to GAAP financial measures.

(2) Performance period from December 31, 2018 through December 31, 2023. Peer group average based on 2023 peer group as outlined in Section II below.

Key Financial and Strategic Highlights for 2023

Delivered record net income and adjusted EBIT of $95.7 million and $156.1 million, respectively

Adjusted net income excluding acquisition amortization for 2023 was $118.0 million, or a record $5.64 per share, diluted

Reported strong operating cash flow of $144.4 million for 2023 and ended the year with meaningful available liquidity to support growth initiatives and shareholder returns

Increased quarterly dividend for an eleventh consecutive year and returned $10.6 million to shareholders in the form of dividends

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Summary NEO Compensation Decisions and Actions in 2023

Factors Guiding NEO Compensation Decisions	Market compensation rates, including Materion's compensation peer group, for each position
	Company's performance against pre-established goals
	Experience, skills, expected future contributions, and leadership
	Contributions and performance of each individual
2023 NEO Compensation Decisions (see below for details)	Target Total Direct Compensation: The target total direct compensations for Ms. Chadwick and Messrs. Vijayvargiya, and Chemnitz in 2023 were managed within 20% of the market median.
	Base Pay: NEO salary increases were 8.82% for Mr. Vijayvargiya, 5.00% for Ms. Chadwick and 4.00% for Mr. Chemnitz.
	Management Incentive Plan (MIP): Payout under the MIP was based on Company adjusted EBIT, value-added sales growth, and simplified free cash flow performance versus goals. The Company achieved 65.5% funding for its adjusted EBIT component, 88.0% funding for its value-added sales growth component and 32.7% funding for its simplified free cash flow component, resulting in MIP awards at 63.96% of target for our NEOs.
	Long-term Incentives (LTI): The Committee determined 2023 equity grants after carefully considering (1) the Company's 2022 performance, (2) comparative market pay practices and (3) our performance-driven compensation philosophy. In 2023, shareholder value creation is achieved through performance-based grants representing approximately 75% of the overall target equity opportunities for Mr. Vijayvargiya, and 60% of the overall target equity opportunities for Ms. Chadwick and Mr. Chemnitz (excluding a special award of RSUs made to Ms. Chadwick in 2023).
Shareholder Advisory Vote Consideration	At our 2023 annual meeting of shareholders, we received over 92% approval from our shareholders, based on the total votes counted, for our annual advisory "Say-on-Pay" proposal to approve the compensation of our NEOs. The Committee considered these voting results at its meetings after the vote, and while it believes the voting results demonstrate significant support for our overall executive compensation program, the Committee remains dedicated to continuously improving the existing executive compensation program and the governance environment surrounding the overall program. The Committee did not make any changes to its compensation policies and practices that were specifically driven by the results of the Say-on-Pay vote.

Changes in Prior Years

The Committee has made a number of other executive pay and related corporate governance changes to further align our executive compensation program with market competitive best practices. Specifically, the Committee:

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Compensation Program Design	Established stock ownership and retention guidelines for the NEOs and non-employee directors to further promote long-term equity ownership, and in 2022, discontinued the recognition of unexercised vested and unvested SARs as stock ownership.
	Introduced a simplified free cash flow (SFCF) metric (defined as the amount equal to earnings before interest and taxes plus depreciation and amortization, plus or minus the change in working capital minus capital investments), in addition to the existing earnings before interest and taxes and value-added sales growth metrics, within our annual MIP to provide more focus on continually improving the Company’s return on invested capital.
	In 2020, replaced operating profit with adjusted EBIT as one of the three key metrics for our annual MIP. The adjusted EBIT metric increases focus on the performance of the Company's core operations excluding tax expenses and the costs of the capital structure influencing profit.
	Put more stock and compensation at risk by increasing the weighting of the Performance Restricted Stock Units (PRSUs) to, typically, between 40% and 50% of the total target LTI award mix for our NEOs. The LTI program for 2023 had four components, including stock appreciation rights (SARs), PRSUs tied to our Relative Total Shareholder Return (RTSR) (RTSR PRSUs), PRSUs tied to our absolute Return On Invested Capital (ROIC) (ROIC PRSUs) and time-based RSUs. Including all PRSUs and SARs, typically 60% to 75% of the total target LTI award mix for our NEOs is “at risk”.
	Eliminated all executive perquisite programs, other than periodic executive physicals, for the NEOs.
	Effective December 31, 2019, the Materion Corporation Pension Plan (the Pension Plan) was amended, freezing the accrued benefit for all participants. Beginning January 1, 2020, the Materion Corporation Retirement Savings Plan (401(k) Plan) was enhanced, providing participants with a Company matching contribution of $1.00 for each dollar they elect to contribute up to the first 4% of compensation deferred, and an annual non-elective contribution ranging from 1.5% to 2.5% of each employee’s annual eligible earnings based on their age. Both the Company match and the annual non-elective contribution are subject to the applicable annual Internal Revenue Code (Code) limitation.
	In conjunction with freezing the Pension Plan, the Materion Corporation Supplemental Retirement Benefit Plan (SRBP) was amended, freezing the accrued benefit for all participants, effective December 31, 2019.
Corporate Governance	Allowed the excise tax gross-up provisions in existing severance agreements to expire and did not include gross-up provisions in any new agreements.
	Implemented a "double trigger" change in control vesting provision for all equity grants, which provides that outstanding equity grants will vest on an accelerated basis either if the awards are not continued, assumed or replaced upon the occurrence of a change in control or if the executive experiences a subsequent qualifying termination of employment. A change of control is triggered if any Person’s beneficial ownership reaches or exceeds 30%.
	Effective October 2, 2023, adopted a new Compensation Clawback Policy to comply with both certain new clawback listing standards of the New York Stock Exchange and new rules and regulations promulgated by the U.S. Securities and Exchange Commission. In connection with the adoption of the new Compensation Clawback Policy, the Board amended and revised in its entirety the company’s predecessor 2011 Clawback Policy, as amended and restated, in the form of the Supplemental Clawback Policy. The Supplemental Clawback Policy operates, effective October 2, 2023, separate and distinct from (but in addition to) the new Compensation Clawback Policy, applying in particular with respect to any compensation that is not covered by or subject to the new policy by its terms.

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Section II: Executive Compensation Program Overview

Compensation Philosophy and Objectives

Our long-standing compensation philosophy has three key objectives:

•Attract, motivate and help retain key executives with the ability to profitably grow our business portfolio;

•Build a pay-for-performance environment with total pay levels targeted at the competitive market median; and

•Provide opportunities for share ownership to align the interests of our executives with our shareholders.

Primary Components of the NEO Compensation Program for 2023

To achieve these objectives, our NEO compensation program includes the following primary components:

Component		Purpose / Objective	Key Characteristics
Base Salaries		Provide a fixed, competitive level of pay based on responsibility, qualifications, experience and performance	Fixed cash compensation
Management Incentive Plan (MIP)		Align variable pay with short-term performance in support of our annual business plan and strategic objectives	Variable cash incentive compensation earned at 0% – 200% based on Company performance over a 1-year performance period
Long-term Incentives (LTI)	PRSUs	Aligns NEOs' interests with those of our shareholders by motivating and rewarding achievement of long-term shareholder value and growth; promotes retention	Variable stock-based incentive compensation earned at 0% – 200% based on Company performance over a 3-year performance period; value dependent upon achievement of performance metrics and our stock price performance relative to our peer group
	Stock Appreciation Rights (SARS)	Aligns NEOs' interests with those of our shareholders by rewarding achievement of upside potential; promotes retention	Stock-based incentive compensation that generally vests in 3 equal annual installments; only provides value if our stock price appreciates
	RSUs	Aligns NEOs' interests with those of our shareholders by rewarding long-term value creation; promotes retention	Stock-based incentive compensation that generally vests in 3 equal annual installments; value tied to our stock price
Health, Welfare and Retirement Benefits		Provide competitive health, welfare and retirement benefits and enhance executive retention. NEOs are also eligible for periodic executive physicals, but no other perquisites are provided	Retirement benefits are payable in cash following qualifying separation from service

Target Total Pay Mix    

Due to our pay-for-performance philosophy, the Committee has set base salaries as a relatively small part of target total compensation for the NEOs and has provided a significant portion of target total compensation in the form of equity-based LTI, consisting of grants of SARs, PRSUs and RSUs that align NEOs' interests with those of our shareholders. In 2023, performance-based LTI grants represented approximately 75% of the total target equity opportunity offered to Mr. Vijayvargiya and approximately 60% for Ms. Chadwick and Mr. Chemnitz (excluding a special award of RSUs made to Ms. Chadwick in 2023). We view SARs as inherently performance-based because they will only have value to the extent our stock price appreciates.

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The following charts summarize the target total compensation mix for our CEO and the average target total compensation mix for our other NEOs:

*Amounts in pie charts exclude a special award of RSUs made to Ms. Chadwick in 2023.

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Our Commitment to Sound Corporate Governance

The Committee works to ensure that our executive compensation program adheres to sound corporate governance and market competitive best practices. The following table highlights our corporate governance practices:

What We DO	What We DON'T DO
Target pay mix places primary emphasis on variable incentives to align compensation with performance.	No single trigger acceleration provisions in the event of a change in control for cash severance or equity awards.
Incentives are tied to pre-established, objective goals, with no payouts for below-threshold performance.	No excessive benefits and no NEO perquisites, other than periodic executive physicals.
Majority of LTI awards are “at risk”, typically with 40% to 50% comprised of PRSUs tied to three-year performance goals.	No excise or other tax gross-ups in current or future NEO employment or severance agreements.
NEOs are subject to mandatory stock ownership guidelines along with stock holding requirements.	No repricing of SARs without prior shareholder approval.
Incentive awards to NEOs are subject to a formal clawback policy.	No multi-year guarantees for salary increases, bonuses, incentives, or equity grants.
NEO compensation is initially targeted in the median range of our peer group and third-party general industry surveys for all elements of compensation, including base salary, target MIP opportunities and target LTI awards.	No dividend equivalents or dividends paid on unearned PRSUs.
Long term incentive plan uses both absolute and relative metrics	No share hedging or pledging activities.
On an annual basis: i.We participate in executive compensation training via a 3rd party in order to keep current of compensation developments, shareholder's requirements, SEC reporting, etc. ii.Perform a review of our outside compensation advisor's performance and vote on their appointment.

The Compensation and Human Capital Committee and its Role in Determining NEO Compensation

The Committee is responsible for the design and oversight of our executive compensation programs covering NEOs, including the CEO. All of the members of the Committee are independent, non-employee directors as defined by the rules of the NYSE. The Committee makes policy and strategic recommendations to the Board of Directors (Board) and has authority delegated from the Board to, among other things:

•Implement executive compensation decisions;

•Design the base compensation, incentive compensation and benefit programs for the NEOs;

•Assess and address any inherent risks in executive and employee compensation programs;

•Oversee the equity incentive plans; and

•Oversee the administration of our stock ownership guidelines.

The Committee met five times in 2023 and all meetings included an executive session during which management was not present. In addition, the Committee acted by written consent once. Most compensation decisions are finalized in the first quarter of each fiscal year. The Committee charter, which sets forth the Committee's responsibilities on a more comprehensive basis, is available under the “Corporate Governance” tab at http://materion.com and is reviewed on an annual basis to ensure it continues to satisfy changing corporate governance requirements and expectations.

The Committee relies on an independent compensation consultant, Frederic W. Cook & Co., Inc. (FW Cook), for advice, data, and market information regarding the CEO’s compensation. It also reviews business documents such as budgets, financial statements, and management reports on our business activities, as well as individual performance assessments, in making its decisions. FW Cook presents a detailed recommendation on all compensation elements for review and discussion resulting in a formal decision on each compensation element. The CEO, working with FW Cook, provides a similar recommendation for the other NEOs and executives for whom the committee has oversight. This recommendation is also presented, reviewed, and discussed, with the Committee, resulting in

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a final compensation decision for each executive. The Committee has a strong focus on Pay for Performance transparency for executive compensation decisions in comparison to peer group sales/earnings growth and share price appreciation.

The Role of the Compensation and Human Capital Committee in Reviewing Talent Development and Retention

On an annual basis, the Compensation and Human Capital Committee, along with the full Board of Directors, review company pay practices, succession plans, talent development programs and Diversity and Inclusion initiatives of the company. These programs are vital to ensuring that top talent is hired, nurtured and retained by the Company. Each of the NEOs, along with the core Executive Management Team play an important role in the development of the Company’s talent pipeline.

The Role of Management in Providing Input on Executive Compensation to the Committee

Management provides periodic updates to the Committee regarding business performance and forecasts. Management also provides input on incentive compensation plan performance goals, based on the annual business plan approved by the Board. As noted above, the CEO provides base salary recommendations for his direct reports whose compensation is subject to Committee oversight.

The Role of the Independent Compensation Consultant and Other Independent Advisers to the Committee

In determining compensation elements and performance goals for the NEOs, the Committee relies on several resources, including the services of an independent compensation consultant as well as other independent advisers who are periodically retained. In 2023, the Committee again engaged FW Cook to serve as its independent compensation consultant.

FW Cook works directly for the Committee (and not on behalf of management) and assists the Committee in evaluating our executive compensation program, including peer group composition, competitive benchmarking, program design and staying abreast of market practices and trends.

For 2023, the Committee assessed the independence of FW Cook, as required under NYSE listing rules. The Committee also considered and assessed all relevant factors, including but not limited to those set forth in Rule 10C-1(b)(4)(i) through (vi) under the Exchange Act, that could give rise to a potential conflict of interest with respect to FW Cook's work. Based on the review, we are not aware of any conflict of interest that has been raised by the work performed by FW Cook.

How Compensation is Set: Peer Group Companies

For 2023, compensation determinations and assessments were made primarily against a comparison group of 19 public companies in the steel/metals & mining, specialty/commodity chemicals, and semiconductor/electronics industries as selected by FW Cook and approved by the Committee. FW Cook reviews and updates the comparison group for continued suitability based on industry and company size, focusing on companies with annual revenues greater than $500 million and metrics including operating income, total assets, total equity, total employees and market capitalization within a comparable range to those of the Company. The Committee reviewed the 2022 comparison peer and made the following changes due to M&A activity and size: removed 7 companies (Coherent, Entegris, Ferro, Haynes International, Kraton, Rogers, and Schweitzer-Mauduit International, Inc.) and added 7 companies (Ingevity, Kennametal, Mativ Holdings, OSI Systems, Sensient Technology, SMART Global, and Stepan). In making these changes to the peer group, the Committee chose companies that better reflect the transformation that Materion has been undertaking. The peer group companies selected better align to an Advanced Materials Company with technology driven products and solutions that deliver strong profit margins. The comparison group is the same peer group intended for determining long-term incentive RTSR PRSU award compensation for awards granted in 2023.

Balchem Corporation	Minerals Technologies Inc.
Carpenter Technology Corp.	Olympic Steel Inc.
Compass Minerals International, Inc.	OSI Systems, Inc.
CTS Corporation	Quaker Chemical Corporation
Glatfelter Corp.	Rayonier Advanced Materials, Inc.
Ingevity Corporation	Sensient Technologies
Innospec Inc.	SMART Global Holdings, Inc.
Kennametal Inc.	Stepan Company
Mativ Holdings	Suncoke Energy, Inc.
Methode Electronics Inc.

Based on FW Cook’s May 2022 report, the Company ranked near the median range of comparison companies, in terms of company size, profitability, growth, and shareholder return. This competitive ranking indicates that the comparison group is a reasonable

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benchmark and that the median range is an appropriate target for total direct compensation opportunities for the NEOs, with actual compensation earned dependent on Company and individual performance.

Given the strong correlation between revenue and executive compensation, FW Cook size-adjusts the competitive market by using the median compensation of the comparison group, where the Company is positioned near the median of the group in terms of company size, profitability, growth, and shareholder return. The comparison group data is blended with median third-party survey data, regressed and adjusted based on the Company’s corporate and business unit revenue scope. The third-party survey data used is from the 2022 Willis Towers Watson Executive Compensation Database and the 2021 Aon Hewitt Total Compensation Measurement Survey. The 2022 Willis Towers Watson survey includes over 500 organizations ranging in size from approximately $5 million to over $500 billion in annual revenue. The 2021 Aon Hewitt Total Compensation Measurement Survey includes 450 organizations ranging in size from $60 million to $265 billion in annual revenue. Data utilized from these surveys is scoped based on Company revenue. The compensation data, and not the identity of the individual companies participating in these surveys, was the significant factor considered by the Committee with respect to its 2023 executive compensation decisions for our NEOs.

The median comparison group data and the size-adjusted third-party survey data is used to set a targeted range for the Company’s compensation elements, which is referred to as the median market range. These targeted ranges are within 10% of median for base salaries, within 15% of median for annual cash incentive targets, and within 20% of median for both long-term incentive targets and for target total direct compensation. The underlying rationale for the above ranges is to acknowledge that an exact market data point creates a perception of precision that does not exist, and to provide flexibility to position incumbent/job low or high in range and still be within “market” depending on performance assessment and/or importance of incumbent/job. In making compensation decisions, the Committee reviews these target ranges; however, individual NEOs’ total direct compensation, or its components, may vary above or below the market median range due to the executive’s skills, experience in current role, tenure with the Company and individual performance.

Section III: Details and Analysis of the 2023 Executive Compensation Program

The following is an explanation and analysis of the 2023 compensation elements:

Base Salary

The Committee approved salary increases effective August 1, 2023, to improve the alignment with the competitive market and recognize past performance and future expected contributions.

	2022 Base Salary	2023 Base Salary	% Increase
Jugal K. Vijayvargiya	$850,000	$925,000	8.82%
Shelly M. Chadwick	460,000	483,000	5.00%
Gregory R. Chemnitz	454,000	472,160	4.00%

2023 Management Incentive Plan (MIP)

Early in the year, the Board approved an annual operating plan that reflected our expectations for company performance during 2023. The annual operating plan called for a 15% increase in adjusted EBIT, a 2.9% increase in value-added sales (VAS) growth and a target of simplified free cash flow (SFCF) to generate meaningful positive SFCF while also allowing for investment and working capital growth to support the growing business.

The Committee used the 2023 annual operating plan as the basis for 2023 MIP goals of adjusted EBIT, VAS growth, and SFCF. VAS growth is the amount equal to the Company’s sales minus the aggregate cost to the Company of the precious metals such as, gold, silver, platinum, palladium, copper, ruthenium, iridium, rhodium, rhenium, and osmium. SFCF is the amount equal to adjusted EBIT plus depreciation and amortization minus the change in working capital (accounts receivable, accounts payable and inventory) and capital investments. The adjusted EBIT, VAS growth, and SFCF goals accounted for 70%, 15%, and 15%, respectively, of each participating NEO's total target annual incentive opportunity.

The 2023 target annual incentive, as a percentage of base salary, for each participating NEO remained the same as 2022 for Mr.Vijayvargiya, 110% , Ms. Chadwick, 70% and Mr. Chemnitz, 56%.

Name	2023 MIP Performance Measures and Target Payout as a % of Salary
	Adjusted EBIT (70%)	VAS Growth (15%)	SFCF (15%)	Total MIP Target
Jugal K. Vijayvargiya	77.0%	16.5%	16.5%	110%
Shelly M. Chadwick	49.0%	10.5%	10.5%	70%
Gregory R. Chemnitz	39.2%	8.4%	8.4%	56%

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Actual payouts can range from 0% of target awards for below-threshold results up to 200% of target awards at maximum levels and are determined on the basis of straight-line mathematical interpolation.

The table below shows the threshold, target and maximum performance goals for 2023 as well as actual results:

($ in millions)	2023 MIP Performance Goals and Results					Results
Performance Metric	Weighting	Threshold (Funds 25%)	Target (Funds 100%)	Maximum (Funds 200%)	2023 Actual Performance	% of Target Award Earned
Adjusted EBIT(1)	70.0%	$118.1	$157.4	$196.8	$139.2	45.85%
VAS	15.0%	(11.5)%	3.5%	18.5%	1.1%	13.20%
SFCF	15.0%	$78.4	$98.0	$117.6	$80.4	4.91%
					Total	63.96%

(1) Actual 2023 adjusted EBIT for incentive compensation purposes excludes the impact of non-recurring items which in 2023 were primarily related to restructuring and cost reductions as well as start up resources and scrap. See Appendix A for a reconciliation of non-GAAP to GAAP financial measures.

The Company's adjusted EBIT, used for incentive compensation purposes, was $139.2 million in 2023, which was below target performance, resulting in a weighted earned payout of 45.85% of target for that portion of the award opportunity. VAS growth was 1.1%, which was below target performance, resulting in a weighted earned payout of 13.20% of target for that portion of the award opportunity. SFCF was $80.4 million, which was below target performance, resulting in a weighted earned payout of 4.91% of target for that portion of the award opportunity.

Overall, total MIP awards for participating NEOs were earned at a 63.96% level in 2023. The table below shows the total 2023 MIP awards earned as a result of the adjusted EBIT, VAS growth, and SFCF performance compared to goals:

	MIP Target			MIP Payout as a % of Target	Total MIP Payout
Name	% Base Salary	$
Jugal K. Vijayvargiya	110%	$	1,017,500	63.96%	$	650,793
Shelly M. Chadwick	70%	338,100		63.96%	216,249
Gregory R. Chemnitz	56%	264,410		63.96%	169,117

Long-term Incentive Equity-based Awards

General

Target LTI award values are determined based on consideration of the market data, as well as the experience, responsibilities and performance of each executive. The outstanding equity grants currently held by each NEO are not taken into consideration in making new grants to that NEO.

LTI Award Vehicles and Grants Made in 2023

The LTI program for 2023 had four components and included:

•Stock Appreciation Rights (SARs), which are granted at fair market value and appreciate in value based on increases in our share price and, consequently, the capital appreciation achieved for shareholders. The SARs generally vest one-third on each of the first three anniversaries of the grant date, subject to the NEO's continued service with us on such date, and subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”. The SARs have a term of seven years during which they can be exercised if vested and are settled (when exercised) in shares. The SARs will expire if not exercised prior to the end of the seven-year term.

•Restricted Stock Units (RSUs), which are designed for retention purposes and are earned by our NEOs based on the passage of time and continued employment. The RSUs generally vest one-third on each of the first three anniversaries of the grant date, subject to the NEO's continued service with us on such date, and are settled in shares, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”. Ms. Chadwick's 2023

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RSU grant included a special grant in recognition of her contributions to Materion and for retention purposes, valued at $200,000, that will cliff vest on the third anniversary of the grant date.

•Performance-based Restricted Stock Units (RTSR PRSUs), which are tied to our Total Shareholder Return (TSR) over three years versus the TSR of our comparison group (identified above under "Peer Group Companies"). These awards are intended to align executive pay with long-term shareholder value creation and RTSR performance. RTSR PRSUs generally vest at the end of the performance period, contingent on the NEO still being employed with us on such date, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”. Any earned RTSR PRSU awards are settled in stock. Award funding can range from 0% to 200% of target levels, based on our three-year TSR positioning relative to comparison group as shown in the table below:

Performance Level	Three-Year RTSR vs. Comparison Group	% of Target RTSR PRSUs Earned
Below Threshold	Below 25th Percentile	0%
Threshold	25th Percentile	50%
Target	50th Percentile	100%
Maximum	80th Percentile	200%

•Performance-based Restricted Stock Units (ROIC PRSUs), are tied to our average ROIC for 2023, 2024 and 2025. These ROIC PRSU awards are intended to further align executive pay with Company performance over a multi-year period, as measured by ROIC, which we believe correlates with long-term shareholder value creation. ROIC PRSUs generally vest at the end of the performance period, contingent on the NEO still being employed with us on such date, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”. Any earned ROIC PRSUs are settled in stock. Award funding can range from 0% to 200% of target levels, as shown in the table below:

Performance Level	ROIC	% of Target ROIC PRSUs Earned
Below Threshold	Below 10.2%	0%
Threshold	At 10.2%	50%
Target	At 12.7%	100%
Maximum	15.2% or greater	200%

The target long-term incentive vehicle mix approved for fiscal year 2023 grants is shown in the following chart:

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For both RTSR PRSU and ROIC PRSU awards, funding levels for results in between designated performance levels will be determined using straight-line mathematical interpolation. The actual value of these awards will be based on the number of shares earned, if any, and our corresponding stock price at the time of settlement. No dividend equivalents will be paid on any unearned PRSUs.

The table below shows the various equity grants in 2023 and their associated grant date fair values for the NEOs:

Name	2023 Equity Grants (# of shares)				2023 Equity Grants (Grant Date Fair Values)								Total Grant Date Fair Value
	SARs	RTSR PRSUs	ROIC PRSUs	RSUs (1)	SARs		RTSR PRSUs		ROIC PRSUs		RSUs
Jugal K. Vijayvargiya	23,027	8,219	8,219	8,219	$	973,351	$	1,488,132	$	931,048	$	931,048	$	4,323,579
Shelly M. Chadwick	4,912	1,753	1,753	5,273	207,630		317,398		198,580		597,325		1,320,933
Gregory R. Chemnitz	3,040	1,085	1,085	2,170	$	128,501	$	196,450	$	122,909	$	245,818	$	693,678

(1) For Ms. Chadwick, amounts in this column include an award of 3,507 RSUs made as part of her regular annual grants and 1,766 RSUs made as a special grant in 2023 (as described above).

Grant date fair values shown above for SARs reflect the Company's fair value assumptions, and are calculated using the Black-Scholes pricing model, which is used for accounting expense recognition purposes.

The Committee is solely responsible for granting equity awards. The awards traditionally are granted in late February or early March after the Company's annual earnings have been announced. Equity grants for 2023 were made to Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz on March 1, 2023. Regular equity grant target award values are based on a dollar value for Mr. Vijayvargiya $3,000,000, Ms. Chadwick $800,000 and Mr. Chemnitz $495,000.

The Committee adopted Stock Award Administrative Procedure Guidelines related to the various forms of equity grants designed to formalize the process of establishing the date of grant, grant prices at fair market value, and other administrative practices appropriate for equity grants to executives. To minimize the impact of daily stock price volatility, equity grant calculations are based on our average closing stock price for the last full month ending at least ten business days prior to the grant date. Equity grant levels shown above were based on our average closing stock price in January 2023 of $91.25, which differs from the grant date fair values for such awards.

Under the terms of the LTI awards, our NEOs are required to forfeit outstanding awards and pay back any amounts realized from equity grants if they engage in activity deemed to be detrimental to the Company, as defined in the applicable equity award agreements. Any gains on equity grants are also subject to our clawback policies.

Grants Made in 2021 and Payout of 2021 PRSUs

The performance period for the PRSUs granted in 2021 (RTSR and ROIC) ended on December 31, 2023. Award funding for RTSR PRSUs was based on our three-year TSR positioning relative to a peer group (as listed in the Proxy Statement filed in 2022) as follows: performance below the 25th percentile would fund 0% of the target award; performance at the 25th percentile would fund 50% of the target award; performance at the 50th percentile would fund 100% of the target award; and performance at or above the 80th percentile would fund 200% of the target award. Funding levels for results between the designated performance levels were determined using straight-line mathematical interpolation. Our three-year TSR positioning relative to our peer group for the 2021 RTSR PRSUs was at the 78th percentile, resulting in an award payout equal to 193.0% of target award opportunity. Award funding for ROIC PRSUs ranged from 0% to 200% of target as follows: performance of 10.0% ROIC would fund 50% of the target award; performance of 12.5% ROIC would fund 100% of the target award; and performance at or above 15.0% ROIC would fund 200% of the target award. No PRSUs would be earned for performance below the threshold level of 10.0% ROIC. Funding levels for results in between designated performance levels were determined using straight-line mathematical interpolation. Our ROIC as measured by our average ROIC for 2021, 2022 and 2023 was 12.6% resulting in an award payout equal to 104.8% of target award opportunity for the 2021 ROIC PRSUs. For the PRSUs, Mr. Vijayvargiya earned 22,287 units, Ms. Chadwick earned 5,244 and Mr. Chemnitz earned 3,972 units. All amounts include earned share dividend equivalents.

Other Policies, Practices and Guidelines

Severance Agreements

Mr. Vijayvargiya and Ms. Chadwick are party to a Severance Agreement that provides 18 months and 12 months, respectively, of severance benefits in the event of an involuntary termination of employment by the Company, other than for cause (as defined in the severance agreement) or due to death or disability (or due to certain resignations as described in the Severance Agreement). Mr. Chemnitz is also a party to a Severance Agreement providing for severance benefits in other specified circumstances, as described below. These Severance Agreements were adopted to help retain top level executives.

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The Severance Agreements provide Mr. Vijayvargiya, Ms. Chadwick, and Mr. Chemnitz with benefits upon certain qualifying terminations of employment following a change in control. The triggering events for a change in control are described in the section entitled “Potential Payments Upon Termination or Change in Control” below and were designed to be competitive and reasonable based primarily on advice from legal counsel as well as the experience of our directors. If Ms. Chadwick or Mr. Vijayvargiya resign for “good reason” (as described in the Severance Agreement), or their employment is (or was) terminated by the Company for reasons other than for cause, in either case, during the two-year period following a change in control (or due to death or disability), the Severance Agreement generally provides for two years of severance benefits. Under the same circumstances, Mr. Chemnitz will receive essentially three years of severance benefits. The potential severance benefits for Mr. Vijayvargiya. Ms. Chadwick and Mr. Chemnitz are described below under “Potential Payments Upon Termination or Change in Control”.

None of the Severance Agreements provides for any excise tax "gross-up" provisions for the “parachute tax” under Code Section 280G. The Committee has confirmed its intent not to enter into any new Severance Agreements that include such a provision.

The Committee believes the Severance Agreements are an important part of the competitive executive compensation package because they help ensure the continuity and stability of executive management and provide protection to the NEOs. The Committee also believes the Severance Agreements reduce the NEOs' interest in working against a potential change in control and help to minimize interruptions in business operations by reducing any concerns they have of being terminated prematurely and without cause during an ownership transition. The Company benefits from these agreements in that in exchange for the protections offered, each NEO agrees to:

•Refrain from competing while employed and for two years after a termination of employment;

•Refrain from soliciting any employees, agents or consultants to terminate their relationship with us;

•Protect our confidential information; and

•Assign to the Company any intellectual property rights to any discoveries, inventions or improvements made while employed by us and within two years (one year for Mr. Chemnitz) after employment terminates.

Materion Non-CIC Severance Policy

Mr. Chemnitz is eligible for 12 months of severance benefits in the event of an involuntary termination of employment by the Company, other than for cause or due to death or disability. The triggering event for an involuntary termination are described in the section entitled “Potential Payments Upon Termination or Change in Control” below and were designed to be competitive and reasonable based primarily on advice from FW Cook, legal counsel and the experience of our directors.

Retirement Benefits

We provide retirement and deferred compensation benefits to our NEOs under certain Company plans and arrangements, including the:

•Materion Corporation Pension Plan (Pension Plan);

•Materion Corporation Supplemental Retirement Benefit Plan (SRBP);

•Materion Corporation Retirement Savings Plan (401(k) Plan); and

•Materion Corporation Restoration & Deferred Compensation Plan (RDCP). 

Prior to 2011, we provided special awards under a plan (further described below in connection with the SRBP) that was designed to supplement the retirement benefits provided under the Pension Plan for participating NEOs. These special awards were eliminated at the end of 2010, with the SRBP assuming the same role beginning in 2011. The Committee believes each of these programs is necessary from a competitive standpoint (because many companies with whom we compete for talent offer similar retirement benefits) and for retention purposes.

Pension Plan

The Pension Plan is a tax-qualified defined benefit pension plan that provides retirement compensation to approximately 22% of our U.S. employees. Mr. Chemnitz is the only NEO that participates in the Pension Plan, as this plan was closed to new employees hired after May 25, 2012. Before June 1, 2005, the benefit formula under the Pension Plan was 50% of the final average earnings over the highest five consecutive years minus 50% of the annual Social Security benefit, with the result prorated for service of less than 35 years. Effective as of May 31, 2005, we froze the benefit under the prior formula for all employees. Mr. Chemnitz did not earn a benefit under this formula.

In 2015, the Board amended the Pension Plan effective January 1, 2016, to allow participants to elect a lump sum payment, limited to $100,000, following termination in lieu of a future annuity.

Effective December 31, 2019, we froze accruals under the Pension Plan for all employees and enhanced the 401(k) Plan for all participants to provide a matching contribution of $1.00 for each dollar contributed up to 4% of compensation deferred by the

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participant and an annual non-elective contribution based on total cash compensation and the participant’s age, both subject to applicable annual Code limitations.

The Code limitations associated with the Pension Plan are considered by the Committee in determining amounts intended to supplement retirement income for Mr. Chemnitz, such as the SRBP and the RDCP described below. The benefit accumulated under the Pension Plan does not affect any other element of compensation for Mr. Chemnitz, except to the extent it is included in the calculation of payments that may be paid upon a change in control or other potential severance payments, as described below in “Potential Payments Upon Termination or Change in Control”.

SRBP

The Committee and the Board approved the SRBP and it became effective in September 2011. The SRBP is an unfunded, non-qualified deferred compensation plan that provides retirement benefits for a select group of management or highly compensated employees to supplement the pension benefits paid to them from the Pension Plan.

Through 2010, the Committee made special awards to participating NEOs to provide supplemental retirement compensation because of the limitations imposed under the Code, which place caps on the amount of eligible compensation used for purposes of determining benefit amounts under the Pension Plan. Special awards were current, taxable annual payments made to participating NEOs to take the place of a traditional supplemental executive retirement plan. The Committee elected to replace the special awards with the SRBP because the circumstances that gave rise to the special awards concept have changed and become more favorable to the use of a traditional supplemental executive retirement plan. In 2023, Mr. Chemnitz was the only member of senior management who participated in the SRBP before the Pension Plan was closed to new hires on May 25, 2012. Mr. Chemnitz was named as a participant in the SRBP in 2012, with all service included since his hire date in September 2007. Since Mr. Chemnitz did not receive any special awards, his Offset Amount (as explained below) is zero. Mr. Vijayvargiya and Ms. Chadwick do not participate in the SRBP but receive retirement benefits due to Code limitations through the RDCP as described below.

Mr. Chemnitz's benefit under the SRBP will be the amount of his “Prevented Benefits” (as described below), reduced by his designated “Offset Amount” (in other words, the total amount that was paid to him in prior years as special award payments), as set forth in the SRBP. Mr. Chemnitz's interest in benefits payable under the SRBP will be vested and non-forfeitable to the same extent and in the same manner as benefits are vested and non-forfeitable under the Pension Plan. The benefits payable under the SRBP will be paid to Mr. Chemnitz in a single sum payment on or about the first day of the third month next following the date of his separation from service, or in certain cases as necessitated by Section 409A of the Code, the first business day of the month that is at least six months after his separation from service.

“Prevented Benefits” for purposes of the SRBP means the difference, expressed as a single sum, between the regular pension benefits payable to Mr. Chemnitz under the Pension Plan and the regular pension benefits that would be so payable to him under the Pension Plan if such benefits were determined based on the inclusion of any compensation that was deferred on an elective basis under any non-qualified deferred compensation plan or agreement with an employer and without regard to limitations on covered compensation and benefit amounts imposed by the Code and taking into account any special calculation provisions for him as set forth on Schedule I to the SRBP.

Consistent with the Pension Plan, effective December 31, 2019, we froze accruals under the SRBP for all participants. Effective January 1, 2020, Mr. Chemnitz became eligible to receive the annual non-elective contribution under the RDCP plan.

401(k) Plan

The 401(k) Plan is a tax-qualified defined contribution plan. All of the NEOs participate in this plan, which we offer as part of a competitive total compensation package. The 401(k) Plan provides the NEOs and all other eligible employees with the opportunity to defer eligible compensation (on a pre-tax basis) up to specified limits imposed by the Code. In 2023, we made a matching contribution to each participant of $1.00 for each dollar contributed up to 4% of compensation deferred by the participant, and an annual non-elective contribution based on total cash compensation and the participant’s age, both subject to applicable annual Code limitations.

RDCP

The RDCP, which is described below in the section entitled “2023 Non-qualified Deferred Compensation,” provides an opportunity for the NEOs to defer a portion of their compensation and represents an element of what we consider a competitive total compensation package for the NEOs. In addition, for key executives compensated over the Code pay limit, including the NEOs, the RDCP provides retirement benefits due to Code limitations for non-SRBP participants.

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Health and Welfare Benefits

The NEOs participate in group life, health and disability programs on the same terms as provided to all salaried employees.

Perquisites

Except for periodic executive physicals, which the Committee views as an element of a competitive total compensation packages, no perquisites or personal benefits are provided to the NEOs.

Accounting and Tax Effects

Section 162(m) of the Code generally disallows a federal income tax deduction to public companies like Materion for compensation in excess of $1 million paid to certain current or former executive officers. In making its compensation decisions, the Committee retains the flexibility to award compensation that is consistent with our objectives and philosophy even if it does not qualify for a tax deduction. The Committee believes that the tax deduction limitation should not be permitted to compromise our ability to design and maintain executive compensation arrangements that will attract and retain the executive talent needed to compete successfully. Accordingly, achieving the desired flexibility in the design and delivery of compensation may result in compensation that in certain cases is not deductible for federal income tax purposes.

Stock Ownership Guidelines

The Committee maintains mandatory stock ownership guidelines for executive officers, including our NEOs. The stock ownership guidelines require our covered NEOs to own qualifying shares with targeted values equal to five times base salary for Mr. Vijayvargiya, three times base salary for Ms. Chadwick and equal to base salary for Mr. Chemnitz.

The Committee also maintains stock ownership guidelines for all non-employee directors, requiring them to own qualifying shares with targeted values equal to five times their annual board cash retainer. These guidelines were established by the Committee to promote long-term stock ownership and further align executive and shareholder interests. Executives, including covered NEOs, and non-employee directors, have five years, from the time they are first subject to these guidelines, to achieve targeted ownership levels. The stock ownership guidelines for executive officers and non-employee directors are available under the "Corporate Governance" tab at http://materion.com.

Until guidelines are met, executive officers, including our covered NEOs and non-employee directors are subject to holding requirements as outlined below:

Position	Retention Ratio
Chief Executive Officer and Non-employee Directors	75% of net shares acquired under equity awards will be held until the applicable guideline has been achieved.
Other NEOs	50% of net shares acquired under equity awards will be held until the applicable guideline has been achieved.

Shares that count towards ownership requirements include common shares held directly or indirectly, shares in employee benefit plans, and the after-tax value of unvested time-based RSUs. Unvested PRSUs, vested/unexercised SARs, and unvested SARs do not count toward ownership requirements. Qualifying shares are valued based on our average closing stock price for the last twenty trading days of each year. Once the required ownership level is met as of any annual measurement date, an executive is deemed to be in ongoing compliance with the guidelines as long as he or she continues to own at least the same number of qualifying shares as when the guideline was originally achieved. If an executive fails to achieve the guidelines within the designated five-year compliance period, the Committee has the discretion to take any action deemed appropriate. As of December 31, 2023, all covered NEOs met the ownership guidelines. All non-employee directors have met the ownership guidelines and all non-employee directors who have been directors for at least one year own Company stock.

Anti-hedging/Pledging

Under our Insider Trading Policy, we prohibit executive officers, directors, and certain other key employees from purchasing any financial instrument or engaging in any other transaction, such as a prepaid variable forward contract, equity swap, collar or exchange fund, that is designed to hedge or offset any decrease in the market value of Company securities. The policy also prohibits insiders from holding Company securities in a margin account or pledging Company securities as collateral for a loan.

Clawback Policy

Effective October 2, 2023, the company's Board of Directors approved and adopted a new Compensation Clawback Policy for the company to comply with both the new clawback listing standards of the New York Stock Exchange and new rules and regulations promulgated by the U.S. Securities and Exchange Commission. This policy is in addition to the clawback provisions contained in our equity award agreements that require awardees to forfeit outstanding awards and pay back any amounts from equity grants if they

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engage in certain activity deemed to be detrimental to the Company. The Committee recognizes that maintaining a clawback policy represents an important protection for shareholders and is an important component of strong corporate governance.

The new Compensation Clawback Policy provides for the reasonably prompt recovery (or clawback) of certain excess incentive-based compensation received during an applicable three-year recovery period by current or former executive officers in the event the company is required to prepare an accounting restatement due to the material noncompliance with any financial reporting requirement under the securities laws. Triggering events include accounting restatements to correct an error in previously issued financial statements that is material to such previously issued financial statements, or that would result in a material misstatement if the error were corrected in the current period or left uncorrected in the current period. Excess incentive-based compensation for these purposes generally means the amount of incentive-based compensation received (on or after October 2, 2023) by such executive officer that exceeds the amount of incentive-based compensation that would have been received by such executive officer had it been determined based on the restated amounts, without regard to any taxes paid. Incentive-based compensation potentially subject to recovery under the mandatory accounting restatement provisions of the Compensation Clawback Policy is generally limited to any compensation granted, earned or vested based wholly or in part on the attainment of one or more financial reporting measures.

In general, the company may utilize a broad range of recoupment methods under the Compensation Clawback Policy for mandatory accounting restatement clawbacks. The Compensation Clawback Policy does not condition such clawback on the fault of the executive officer, but the company is not required to clawback amounts in limited circumstances where the Compensation Committee has made a determination that recovery would be impracticable and (1) the company has already attempted to recover such amounts but the direct expense paid to a third party in an effort to enforce the Compensation Clawback Policy would exceed the amount to be recovered, (2) the recovery of amounts would violate applicable home country law, or (3) the recovery would likely cause the non-compliance of a tax-qualified retirement plan under the Internal Revenue Code of 1986, as amended, and applicable regulations. Operation of the mandatory accounting restatement provisions of the Compensation Clawback Policy is subject to a brief phase-in process during the first few years after its effectiveness. The company may not indemnify any such executive officer against the loss of such recovered compensation in the event of a mandatory accounting restatement.

In connection with the adoption of the new Compensation Clawback Policy, the Board amended and revised in its entirety the company’s predecessor 2011 Clawback Policy, as amended and restated, in the form of the Supplemental Clawback Policy. The Supplemental Clawback Policy operates, effective October 2, 2023, separate and distinct from (but in addition to) the new Compensation Clawback Policy. In general, under the Supplemental Clawback Policy, if we are required to prepare an accounting restatement due to material noncompliance with financial reporting requirements under federal securities laws, we will use all reasonable efforts to recover, from persons currently or formerly covered by the policy (the company’s executive and Section 16 officers, and the company’s executive staff as identified by the Committee, including the NEOs, as described in the policy), excess incentive-based compensation to the extent that such persons, in our determination, willfully committed an act of fraud, dishonesty or recklessness regarding their duties that contributed to such noncompliance (“Misconduct”). For these purposes, excess incentive-based compensation means any incentive-based compensation (for example, annual incentives, performance-based equity awards, and other incentive compensation as described in the policy) paid or granted by us to such persons after 2010 in excess of what they should have been paid or granted had our financial statements been correct in the first place. For certain equity awards not subject to the Supplemental Clawback Policy, if any covered officer engages in Misconduct in connection with such a restatement, the Committee may determine that clawback pursuant to the detrimental conduct provisions of such awards may also be carried out. There shall be no duplication of recovery under the Compensation Clawback Policy and the Supplemental Clawback Policy.

Compensation Policies and Practices - Risk Management

In setting compensation, the Committee considers the risks to Materion's shareholders and to the achievement of our goals that may be inherent in the compensation program. Although a significant portion of our executives' compensation is performance-based and “at-risk,” we believe our executive and employee compensation plans, policies and programs, are appropriately structured and are not reasonably likely to result in a material adverse effect on the Company.

In its review, the Committee noted that:

•Incentive plans provide for balance in that performance measures and goals are tied to the Company's strategic objectives, achievable financial performance centered on the Company's expectations, relative performance against a peer group of companies and specific individual goals;

•A significant portion of variable compensation is delivered in equity (SARs, PRSUs and RSUs) with multi-year vesting. The Company believes that equity compensation helps reduce compensation risk by balancing financial or strategic goals against any other factors management may take into consideration to promote long-term shareholder value;

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•Materion has structured incentive plans that provide appropriate upside opportunity while minimizing incentives for management to pursue short-term financial performance at the expense of long-term shareholder value;

•The Company has adopted stock ownership guidelines that include share retention requirements until guidelines are met, to encourage a focus on long-term growth rather than short-term gains;

•The Company extended the scope of its Clawback Policy to recoup from culpable NEOs any gains that are later found to be based on erroneous financial statements; and

•NEO Tally Sheets, summarizing annual compensation, benefits, stock gains, accumulated wealth and contingent awards and benefits are reviewed by the Committee annually.

In addition, under the guidance of FW Cook, the Company conducted a comprehensive risk assessment of its 2023 incentive plans. The assessment results, as reviewed by the Committee, indicated that from a compensation risk perspective, there were no significant risk areas. The two incentive plans in which the NEOs participate (in other words, the MIP and LTIP) were considered "low risk" and well-aligned with sound compensation design principles that provide a balanced approach for delivering incentives at various levels of performance.

COMPENSATION COMMITTEE REPORT

We have reviewed and discussed with management the foregoing Compensation Discussion and Analysis. Based on our review and discussion with management, we have recommended to the Board that the Compensation Discussion and Analysis be included in this proxy statement and incorporated by reference in our Annual Report on Form 10-K for the year ended December 31, 2023.

The foregoing report has been furnished by the Compensation and Human Capital Committee of the Board.

Craig S. Shular (Chairperson)

Vinod M. Khilnani

Darlene J. S. Solomon

Patrick Prevost

Notwithstanding anything to the contrary as set forth in any of our previous filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, that incorporate future filings, including this proxy statement, in whole or in part, the foregoing Compensation Committee Report shall not be incorporated by reference into any such filings other than our Annual Report on Form 10-K for the fiscal year ended December 31, 2023.

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2023 SUMMARY COMPENSATION TABLE

The following table sets forth information concerning the compensation of our Chief Executive Officer and our other NEOs who served during the fiscal year ended December 31, 2023:

Name and Principal Position	Year	Salary ($) (1)	Bonus ($)	Stock Awards ($) (2)	Option Awards ($) (3)	Non-Equity Incentive Plan Compen-sation ($) (4)	Change in Pension Value and Non- qualified Deferred Compen-sation Earnings ($) (5)	All Other Compen-sation ($) (6)	Total ($)
Jugal K. Vijayvargiya	2023	881,731	—	3,350,228	973,351	650,793	—	115,761	5,971,864
President and Chief	2022	821,154	—	1,864,814	544,434	1,191,471	—	80,669	4,502,542
Executive Officer	2021	771,154	—	1,739,520	508,112	1,346,680	—	88,368	4,453,834
Shelly M. Chadwick	2023	469,731	—	1,113,303	207,630	216,249	—	42,075	2,048,988
Vice President, Finance and	2022	444,193	—	564,545	127,048	410,325	—	20,214	1,566,325
Chief Financial Officer	2021	425,331	—	528,232	119,518	509,752	—	12,538	1,595,371
Gregory R. Chemnitz	2023	461,683	—	565,177	128,501	169,117	38,861	43,799	1,407,138
Vice President, General	2022	441,596	—	388,804	87,466	323,978	—	33,263	1,275,107
Counsel and Secretary	2021	425,231	—	399,812	90,470	407,707	—	34,998	1,358,218

(1)For 2023, "Salary" includes deferred compensation under the 401(k) Plan in the amount of $27,300 for Mr. Vijayvargiya, $30,000 for Ms. Chadwick, and $30,000 for Mr. Chemnitz.

(2)The amounts reported in this column for 2023 reflect the aggregate grant date fair value as computed in accordance with FASB ASC Topic 718 for RSUs and based on probable outcome, for the RTSR and ROIC PRSUs granted during 2023, for each NEO. Assuming the highest level of achievement of the performance conditions to which the PRSUs are subject, the grant date fair value of the PRSUs paid in common stock would be: Mr. Vijayvargiya, $3,724,193, Ms. Chadwick, $794,319 and Mr. Chemnitz, $491,635. See the "2023 Grants of Plan-based Awards" table in this proxy statement for more information on awards granted in 2023.

(3)The amounts reported in this column for 2023 reflect the aggregate grant date fair value as computed in accordance with FASB ASC Topic 718 for SARs granted to each applicable NEO during 2023. See Note R to the Consolidated Financial Statements contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2023 for the assumptions used in calculating the fair value. See the “2023 Grants of Plan-based Awards” table in this proxy statement for more information on awards made in 2023.

(4)The amounts in this column for 2023 represent the payments made to the NEOs under the MIP.

(5)The amounts in this column for 2023 represent the aggregate change in the actuarial present value of the accumulated benefit under the Pension Plan and SRBP as otherwise discussed in this proxy statement. There were no preferential or above market earnings during 2023 under the RDCP plan. The amounts for the change in the pension and SRBP values are as follows:

Name	Pension Plan	SRBP	Total
Gregory R. Chemnitz	$18,158	$20,703	$38,861

(6)For Mr. Vijayvargiya, “All Other Compensation” for 2023 includes Company match in the 401(k) Plan ($13,200), group life insurance premiums, an employer contribution to the RDCP ($41,914) and dividend equivalents on equity awards ($59,537). For Ms. Chadwick, “All Other Compensation” for 2023 includes Company match in the 401(k) Plan ($13,200), group life insurance premiums, an employer contribution to the RDCP ($14,601) and the Company contribution to a Health Savings Account and dividend equivalents on equity awards ($8,600). For Mr. Chemnitz, “All Other Compensation” for 2023 includes Company match in the 401(k) Plan ($13,200), group life insurance premiums, an employer contribution to the RDCP ($13,608), the Company contribution to a Health Savings Account and dividend equivalents on equity awards ($15,183).

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2023 GRANTS OF PLAN-BASED AWARDS

			Estimated Possible Payouts Under Non-Equity Incentive Plan Awards			Estimated Future Payouts Under Equity Incentive Plan Awards (1)			All  Other Stock  Awards: Number of Shares of Stock or Units (#) (2)	All Other Option Awards: Number of Securities Under- lying Options (#) (3)	Exercise or Base Price  of Option Awards ($/Sh)	Grant Date Fair Value of Stock and Option Awards ($) (4)
Name	Type of Grant	Grant Date	Threshold ($)	Target ($)	Maximum ($)	Threshold (#)	Target (#)	Maxi-mum (#)
Jugal K.	MIP		38,156	1,017,500	2,035,000	—	—	—	—	—	—	—
Vijayvargiya	PRSUs (RTSR)	3/1/2023	—	—	—	4,110	8,219	16,438	—	—	—	1,488,132
	PRSUs (ROIC)	3/1/2023	—	—	—	4,110	8,219	16,438	—	—	—	931,048
	RSUs	3/1/2023	—	—	—	—	—	—	8,219	—	—	931,048
	SARs	3/1/2023	—	—	—	—	—	—	—	23,027	113.28	973,351
Shelly M.	MIP		12,679	338,100	676,200	—	—	—	—	—	—	—
Chadwick	PRSUs (RTSR)	3/1/2023	—	—	—	877	1,753	3,506	—	—	—	317,398
	PRSUs (ROIC)	3/1/2023	—	—	—	877	1,753	3,506	—	—	—	198,580
	RSUs	3/1/2023	—	—	—	—	—	—	3,507	—	—	397,273
	RSUs	3/1/2023	—	—	—	—	—	—	1,766	—	—	200,052
	SARs	3/1/2023	—	—	—	—	—	—		4,912	113.28	207,630
Gregory R.	MIP		9,915	264,410	528,820	—	—	—	—	—	—	—
Chemnitz	PRSUs (RTSR)	3/1/2023	—	—	—	543	1,085	2,170	—	—	—	196,450
	PRSUs (ROIC)	3/1/2023	—	—	—	543	1,085	2,170	—	—	—	122,909
	RSUs	3/1/2023	—	—	—	—	—	—	2,170	—	—	245,818
	SARs	3/1/2023	—	—	—	—	—	—	—	3,040	113.28	128,501

(1)These columns show the RTSR and ROIC PRSUs that were granted in 2023. The first referenced award of PRSUs will be earned based on the degree of achievement of RTSR goals during the 2023-2025 performance period and the second referenced award of PRSUs will be earned based on the degree of achievement of ROIC goals during the 2023-2025 performance period. Any earned awards will be settled in common shares and will vest at the end of the 2023-2025 performance period provided these executives are continuously employed throughout the performance period, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”.

(2)This column shows the time-based RSUs that were granted in 2023. These RSUs will vest one-third on each of the first three anniversaries of the grant date, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”. However, Ms. Chadwick's March 1, 2023 special grant of 1,766 RSUs will vest three years from the date of grant.

(3)This column shows the SARs that were granted in 2023. One-third of the SARs vest and become exercisable on each of the first three anniversary dates measured from March 1, 2023 provided these executives are continuously employed three years from the date of grant, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”.

(4)The amounts reported in this column reflect the aggregate grant date fair value as computed in accordance with FASB ASC Topic 718 for SARs and RSUs, and the fair value is based on the probable outcome for PRSUs. See Note Q to the Consolidated Financial Statements contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2023 for the assumptions used in calculating fair values.

Executive Employment Arrangements

None of the NEOs have an employment agreement. However, each NEO has a Severance Agreement that provides the executive with severance benefits upon involuntary termination, or termination for good reason as defined in the agreement, as a result of a change in control and, Mr. Vijayvargiya and Ms. Chadwick, will receive severance benefits (18 and 24 months, respectively) in the event of certain involuntary terminations in the absence of a change in control. Mr. Chemnitz's Severance Agreement does not include severance for an involuntary termination in the absence of a change of control; however, he is eligible for 12 months of severance benefits under the Materion Non-CIC Severance Policy. Discussion of the payouts provided for various termination situations is set forth in the section “Potential Payments Upon Termination or Change in Control” below.

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OUTSTANDING EQUITY AWARDS AT 2023 FISCAL YEAR-END

	Option Awards				Stock Awards
Name	Number of Securities Underlying Unexercised Options (#) Exercisable	Number of Securities Underlying Unexercised Options (#) Unexercis- able (1)	Option Exercise Price ($)	Option Expiration Date	Number of Shares or Units of  Stock That Have Not Vested  (#) (2)	Market  Value of Shares or Units of Stock That Have Not Vested ($)(3)	Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (#) (4)	Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested ($) (3)
Jugal K. Vijayvargiya	24,791	—	50.35	3/1/2025	—	—	—	—
	32,122	—	58.30	2/22/2026	—	—	—	—
	28,071	—	50.95	2/19/2027	—	—	—	—
	16,396	8,198	68.82	2/17/2028	—	—	—	—
	7,015	14,030	80.85	3/1/2029
	—	23,027	113.28	3/1/2030
	—	—	—	—	20,350	2,648,146	—	—
	—	—	—	—	—	—	30,352	3,949,706
	108,395	45,255
Shelly M. Chadwick	3,857	1,928	68.82	2/17/2028	—	—	—	—
	1,637	3,274	80.85	3/1/2029
	—	4,912	113.28	3/1/2030
	—	—	—	—	14,975	1,948,697
	—	—	—	—	—	—	6,750	878,378
	5,494	10,114	—	—
Gregory R. Chemnitz	—	1,459	68.82	2/17/2028	—	—	—	—
	—	2,254	80.85	3/1/2029	—	—	—	—
	—	3,040	113.28	3/1/2030	—	—	—	—
	—	—	—	—	6,953	904,794	—	—
	—	—	—	—	—	—	4,402	572,832
	—	6,753

(1)These amounts represent (from top to bottom for each NEO) the SARs that were granted March 1, 2018, February 22, 2019 and February 19, 2020 for Mr. Vijayvargiya (generally one-third vest on each anniversary of the grant date) and February 17, 2021, March 1, 2022 and March 1, 2023 for Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz (generally one-third vest on each anniversary of the grant date). The SARs were granted seven years prior to their expiration date.

(2)Time-based RSUs, that were granted in February 17, 2021, vest three years from the date of grant and those granted on March 1, 2022 and March 1, 2023 will vest one-third on each anniversary of the grant date for Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz and are subject to forfeiture if these executives are not employed on the respective vesting date for for each grant, subject to accelerated vesting in certain circumstances as described below in “Potential Payments Upon Termination or Change in Control”. However, for Ms. Chadwick’s RSU sign-on grant, made on November 30, 2020, vesting will occur one-fourth on each anniversary of the grant date, and 1,766 of the RSUs granted to Ms. Chadwick on March 1, 2023 will cliff vest on the third anniversary of the grant date. All amounts in the table above include earned share dividend equivalents. Time-based RSUs were granted to Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz in 2020, 2021, 2022 and 2023 as follows:

Name	11/30/20 Grant (#)	2/17/21 Grant (#)	3/01/22 Grant (#)	3/01/23 Grant (#)
Jugal K. Vijayvargiya	—	7,359	6,863	8,219
Shelly M. Chadwick	15,780	3,461	3,203	5,273
Gregory R. Chemnitz	—	2,620	2,823	2,170

(3)The market value of shares shown above were based on the December 29, 2023 closing stock price of $130.13.

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(4)PRSUs were granted to Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz on March 1, 2022 and March 1, 2023. All amounts include earned share dividend equivalents. The RTSR PRSUs will be earned based on our RTSR performance over three years versus industry peers and the ROIC PRSUs will be earned based on our ROIC performance over three years. PRSU grants settle entirely in shares.

	3/1/2022 PRSU Grant @ Target			3/1/2023 PRSU Grant @ Target			Total PRSUs @ Target
Name	RTSR	ROIC	Total	RTSR	ROIC	Total
Jugal K. Vijayvargiya	6,863	6,863	13,726	8,219	8,219	16,438	30,164
Shelly M. Chadwick	1,601	1,601	3,202	1,753	1,753	3,506	6,708
Gregory R. Chemnitz	1,103	1,103	2,206	1,085	1,085	2,170	4,376

2023 OPTION EXERCISES AND STOCK VESTED

	Option Awards		Stock Awards
Name	Number of Shares Acquired on Exercise (#)	Value Realized on Exercise ($)	Number of Shares Acquired on Vesting (#)	Value Realized on Vesting ($)
Jugal K. Vijayvargiya	31,822	2,114,550	27,501	2,971,644
Shelly M. Chadwick	—	—	5,089	575,802
Gregory R. Chemnitz	9,569	454,484	7,233	782,330

2023 PENSION BENEFITS

Name	Plan Name	Number of Years Credited Service (#)	Present Value of Accumulated Benefit ($)	Payments During Last Fiscal Year ($)
Jugal K. Vijayvargiya	Materion Corporation Pension Plan	—	—	—
	Materion Corporation Supplemental Retirement Benefit Plan	—	—	—
Shelly M. Chadwick	Materion Corporation Pension Plan	—	—	—
	Materion Corporation Supplemental Retirement Benefit Plan	—	—	—
Gregory R. Chemnitz (1)	Materion Corporation Pension Plan	12	393,071	—
	Materion Corporation Supplemental Retirement Benefit Plan	12	589,957	—

(1) -The years of service shown in the table for Mr. Chemnitz represent his service while eligible for participation in the applicable plans. The actual years of service for Mr. Chemnitz as of December 31, 2023 was 16.

Assumptions:

•Measurement Date: December 31, 2023

•Interest Rate for Present Value: 5.19% for Pension Plan and 5.19% for Supplemental Retirement Benefit Plan (SRBP)

•Mortality (Pre-commencement): None

•Mortality Pension Plan (Post-commencement): PRI-2012 Non-Disabled Annuitant Mortality Table for males projected generationally using Scale MP-2020 starting from 2012 (the base year of the PRI-2012 study)

•Mortality SRBP (Post-commencement): The table prescribed by the IRS for minimum lump sum purposes for plan years beginning in 2024 (a version of RP-2014, with static projection to future years using scale MP-2021 improvement)

•Withdrawal and disability rates: None

•Retirement rates: None prior to age 65

•Normal Retirement Age: Age 65

•Accumulated benefit is calculated based on credited service at the end of 2019 (the date accruals under both plans were frozen)

•All results shown are estimates only; actual benefits will be based on data, pay and service at time of retirement

The Pension Plan (qualified pension plan) is a defined benefit plan under which Mr. Chemnitz accrued benefits through December 31, 2019.

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Beginning June 1, 2005, the qualified pension plan formula was changed to 1% of each year’s earnings. Mr. Chemnitz was hired on September 17, 2007. His retirement benefits will be equal to 1% of each year’s earnings. Effective as of the close of business on May 25, 2012, the qualified pension plan was closed to new entrants. Mr. Vijayvargiya and Ms. Chadwick do not participate in the qualified pension plan. Effective December 31, 2019, all accruals were frozen under the qualified pension plan.

The “2023 Pension Benefits” table shows for Mr. Chemnitz the number of years of credited service, present value of accumulated benefit and payments during the last fiscal year under the qualified pension plan. We do not sponsor any other qualified defined benefit plan that provides benefits to Mr. Chemnitz. We also sponsor a non-qualified defined benefit plan that provides benefits to Mr. Chemnitz. See the section entitled “Supplemental Retirement Benefit Plan (SRBP)” for more information. Mr. Vijayvargiya and Ms. Chadwick do not participate in the SRBP.

The “Present Value of Accumulated Benefit” is the lump-sum value as of December 31, 2023 of the annual pension benefit that was earned as of December 31, 2023 that would be payable under the qualified pension plan for Mr. Chemnitz for life beginning at his normal retirement age. The normal retirement age is defined as age 65 in the qualified pension plan. Certain assumptions were used to determine the lump-sum value and to determine the annual pension that is payable beginning at normal retirement age. Those assumptions are described immediately following the “2023 Pension Benefits” table.

If the participant terminates employment before completing ten years of service, the annuity may not commence prior to age 65. If the participant terminates employment after completing ten years of service, the annuity may commence as early as age 55 and is reduced 6.67% per year between ages 60 and 65 and 3.33% per year between ages 55 and 60 based on the participant’s age at commencement, if the benefit commences prior to normal retirement age. An unreduced benefit is available commencing at age 62 for those participants who terminate after age 55 with at least 30 years of service. At year-end 2023, Mr. Chemnitz had attained normal retirement eligibility.

Benefits provided under the qualified pension plan are based on compensation up to a compensation limit under the Code (which was $280,000 in 2019). In addition, benefits provided under the qualified pension plan may not exceed a benefit limit under the Code (which was $265,000 payable as a single life annuity beginning at normal retirement age in 2023).

Compensation is generally equal to the total amount that is included in income (such as regular base salary, incentive compensation under any form of incentive compensation plan, sales commissions and performance-restricted shares of stock at the time these shares are included in the participant’s gross income for Federal income tax purposes), plus salary reduction amounts under sections 125 and 401(k) of the Code. The annual salary and bonus for 2023, for Mr. Chemnitz is indicated in the “2023 Summary Compensation Table.”

A participant’s years of credited service are based on the years an employee participates in the qualified pension plan. The years of credited service for Mr. Chemnitz is based on his service while eligible for participation in the qualified pension plan.

Mr. Chemnitz is eligible only to have his benefits payable in the form of an annuity with monthly benefit payments.

The qualified pension plan was designed to provide tax-qualified pension benefits for some of our employees. Benefits under the qualified pension plan are funded by an irrevocable tax-exempt trust. Mr. Chemnitz’s benefits under the qualified pension plan are payable from the assets held by the tax-exempt trust.

Supplemental Retirement Benefit Plan (SRBP)

Adopted effective September 13, 2011, the SRBP is an unfunded, non-qualified deferred compensation plan that provides benefits for a select group of management or highly compensated employees named in the SRBP document in order to supplement the pension benefits paid to them from the Pension Plan.

Mr. Vijayvargiya and Ms.Chadwick do not participate in the SRBP. Mr. Chemnitz was named as a participant in the SRBP effective December 2012 with all service included since his hire date in September 2007. The participant’s interest in benefits payable under the SRBP will be vested and non-forfeitable to the same extent and in the same manner as benefits are vested and non-forfeitable under the Pension Plan. The benefits payable under the SRBP will be paid to the participant in a single sum payment on or about the first day of the third month (or, in certain cases as necessitated by tax law provisions, the sixth month) following the date of his separation from service.

“Prevented Benefits” for purposes of the SRBP means the difference, expressed as a single sum, between the regular pension benefits payable to a participant under the Pension Plan and the regular pension benefits that would be so payable to the participant under the Pension Plan if such benefits were determined including any compensation that was deferred on an

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elective basis under any non-qualified deferred compensation plan or agreement with a participant and without regard to limitations on covered compensation and benefit amounts imposed by the Code.

Effective December 31, 2019, all accruals were frozen under the SRBP. Effective January 1, 2020, Mr. Chemnitz became eligible to receive the annual non-elective contribution under the RDCP plan.

We are under no obligation to set aside funds specifically designated to pay these supplemental amounts and are not presently maintaining any kind of trust for this purpose.

2023 NON-QUALIFIED DEFERRED COMPENSATION

We maintain one non-qualified deferred compensation arrangement for executives, the Materion Corporation Restoration & Deferred Compensation Plan (RDCP). The primary purpose of this plan is to provide benefits in the event a participant’s compensation exceeds the amount of compensation that may be taken into account for deferring income and matching contributions under the 401(k) Plan and a Company contribution based on annual compensation over the Code limit and the participant's age.

The RDCP provides executives an opportunity to make deferral elections generally not permitted under the 401(k) Plan. Code Section 401(a)(17) limits the amount of compensation that may be taken into account for deferrals under the 401(k) Plan. For 2023, that limit was $305,000. As of the effective date, selected executives may elect each year to defer all or any portion of the sum of his or her MIP payouts, payable in cash for that year, plus up to 50% of his or her base salary.

Each executive’s compensation deferrals earn returns at a rate equal to the return on hypothetical investments selected by the executive from a list of mutual funds identified by the Compensation Committee. Investment selection is intended to be the same or similar to that offered under the 401(k) Plan, but this is not required. The executive’s investment selection is used only to determine earnings credits on the compensation deferrals under the RDCP. We are not obligated to invest any funds in the mutual funds selected by the executive. Earnings returns will change from year to year at the same rate as the returns on the benchmark selected by the executive.

In addition, the RDCP provides retirement benefits of the 401(k) Plan that are limited under the Code for selected executives, including the NEOs, based on the total cash compensation and the participant's age. The RDCP is unfunded. Deferred compensation credits and related earnings credits for each executive are maintained in a book reserve account. We are under no obligation to set aside funds specifically designated to pay these deferred income amounts. However, we maintain a trust, as part of the general assets of the Company, intended to pay these deferred income amounts. In the event the Company becomes insolvent , the assets in the trust would be available to satisfy creditors of the Company, just as any other general assets of the Company, before the deferred income amounts would be paid. In other words, each executive participating in the RDCP is an unsecured general creditor of the Company with respect to the payment of his or her RDCP benefits.

The table below shows 2023 activity in the NEOs' RDCP accounts. Activity includes deferrals to the RDCP of executive contributions, earnings credited to the RDCP and the aggregate balance of the NEOs' RDCP accounts, if applicable, as of December 31, 2023.

Name	Plan	Executive Contributions in Last FY ($) (1)	Registrant Contributions in Last FY ($) (2)	Aggregate Earnings in Last FY ($) (3)	Aggregate Withdrawals/ Distributions ($)	Aggregate Balance at Last FYE ($) (4)
Jugal K. Vijayvargiya	RDCP	145,124	41,914	150,654	(45,684)	836,335
Shelly M. Chadwick	RDCP	—	14,601	804	—	18,490
Gregory R. Chemnitz	RDCP	117,849	13,608	205,085	—	1,231,334

(1)The amount in this column is also included in the "Salary" column of the "2023 Summary Compensation Table".

(2)The amount in this column is also included in the "All Other Compensation" column of the "2023 Summary Compensation Table".

(3)None of the amounts in this column were included in the ”2023 Summary Compensation Table”.

(4)Of these amounts, $680,594 for Mr. Vijayvargiya, $3,045 for Ms. Chadwick and $604,010 for Mr. Chemnitz were reported in prior years' Summary Compensation Tables.

POTENTIAL PAYMENTS UPON TERMINATION OR CHANGE IN CONTROL

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We have entered into Severance Agreements with the NEOs to help ensure the continuity and stability of our senior management. The other incentive arrangements we maintain also provide for payments to be made to the NEOs upon certain terminations of employment. In general, this disclosure quantifies certain payments and benefits that would be provided to the NEOs upon certain terminations of employment and/or a change in control.

Severance Agreements

Severance Benefits In Absence of a Change in Control. The Severance Agreement with each of Mr. Vijayvargiya and Ms. Chadwick provides that if the executive's employment is terminated by the Company or one of its affiliates, except for cause (or death or disability), or if the executive resigns as a result of good reason (as described in the Severance Agreement) in the absence of a change in control, the executive will be entitled to severance benefits.

Severance benefits for Mr. Vijayvargiya and Ms. Chadwick include rights to:

•a lump-sum payment of 150% for Mr. Vijayvargiya and 100% for Ms. Chadwick, respectively, of the executives highest annual salary (for any period prior to the termination date) and the executive's three-year average annual cash incentive compensation (but if the termination occurs prior to the end of the third fiscal year following the date of the Severance Agreement, at the target level);

•the continuation of medical and life insurance benefits for up to 18 or 12 months, respectively; and

•reasonable fees for outplacement services, up to a maximum of $20,000.

In addition, for Mr. Vijayvargiya, all RSUs vest at 100% levels. For Ms. Chadwick, all RSUs vest on a pro-rated basis for number of days employed during applicable vesting period if the severance benefits are applicable. For both, all PRSUs vest on a pro-rated basis depending on actual performance, and all SARs for Mr. Vijayvargiya, become fully vested and exercisable and for Ms. Chadwick SARs become fully vested and exercisable on a pro-rated basis, if the severance benefits are applicable.

Mr. Chemnitz is covered by the Materion Non-CIC Severance Policy which include rights to the following benefits [if his employment is terminated by the Company without cause]:

•a lump-sum payment of 100% of his base salary (for period prior to the termination date) and his annual cash incentive compensation target bonus;

•the continuation of medical and life insurance benefits for up 12 months and

•reasonable fees for outplacement services, up to a maximum of $20,000.

In addition, the Materion 2006 Stock Incentive Plan (Amended and Restated as of May 3, 2017) will determine equity treatment in the event of termination.

Change in Control Severance Benefits. In the event of a “change in control” of the Company, as defined in the Severance Agreements, and if the executive’s employment is terminated by us or one of our affiliates except for cause (or death or disability), or (in the case of Mr. Chemnitz) he resigns within one month after the first anniversary of the change in control for any reason, or the executive resigns within two years (three years for Mr. Chemnitz) of the change in control for good reason (as described in the Severance Agreement), (A) Mr. Vijayvargiya and Ms. Chadwick are entitled to receive similar severance benefits to those described above based on a two-year period with the annual incentive amount based on the higher of (1) the target for the year of termination or (2) the average for the three prior years, and (B) Mr. Chemnitz is entitled to severance benefits, based on a three-year period rather than a two-year period, with the annual incentive amount based on the higher of (1) the target for the year in which the change in control occurs or (2) the highest amount earned after the change in control or in the three years preceding the year of the change in control. The Severance Agreements also provide that, in the event of a change in control, the Company will pay the executive a lump sum amount equal to the pro-rata target value of any MIP award for the performance period in which the change in control occurs, disregarding applicable vesting requirements. The acceleration of outstanding long-term equity and equity-based awards will be subject under the terms of the applicable award agreements to "double trigger" vesting. An involuntary termination or termination for good reason following the commencement of discussions with a third party which ultimately results in a change in control will also activate the change in control benefits. Payment of the change in control benefits under the Severance Agreements is subject to a reduction in order to avoid the application of the excise tax on “excess parachute payments” under the Code, but only if the reduction would increase the net after tax amount received by the executive.

Nonsolicitation and Noncompetition Provisions. Under the Severance Agreements, each covered NEO agrees not to solicit any of our employees, agents or consultants to terminate their relationship with us, to protect our confidential business information and not to compete with us during employment and generally for a period of (1) two years (one year for Mr. Chemnitz) following termination of the NEO’s employment by us or one of our affiliates, or (2) one year following a termination of employment for any other reason. Each executive also assigns to us any intellectual property rights he may otherwise have to

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any discoveries, inventions or improvements made while in our employ or within two years (one year for Mr. Chemnitz) thereafter.

Under the Materion Non-CIC Severance Policy each covered NEO agrees not to solicit any of our employees, agents or consultants to terminate their relationship with us, to protect our confidential business information and not to compete with us during employment and generally for a period of two years termination of the NEO’s employment by us or one of our affiliates.

Amounts Payable Under Severance Agreements/Policy.  The following table sets forth the amounts payable under the Severance Agreements and Materion Non-CIC Severance Policy assuming a termination without cause or a termination for good reason occurring on December 29, 2023. Note that this table does not include any benefits payable to the NEOs under our retirement plan(s), or any payout to the NEOs under the RDCP. For more information about these benefits, see the "2023 Pension Benefits" and the "2023 Non-qualified Deferred Compensation" table and related narratives above. Additional information about the amounts payable to the NEO in the event of retirement, death or permanent disability is presented separately after the table.

	Jugal K. Vijayvargiya		Shelly M. Chadwick		Gregory R. Chemnitz
	Involuntary Not For Cause Termination or Qualifying Resignation ($)	Involuntary or Good Reason Termination after a Change in Control ($)	Involuntary Not For Cause Termination ($)	Involuntary or Good Reason Termination after a Change in Control ($)	Involuntary Not For Cause Termination ($)	Involuntary or Good Reason Termination after a Change in Control ($)
Base Salary/Annual Bonus	2,686,163	3,885,000	821,100	1,642,200	736,570	1,473,139
Welfare Benefits	32,348	43,131	23,277	46,554	15,579	31,159
Outplacement Services	20,000	20,000	20,000	20,000	20,000	20,000
Annual MIP (1)	N/A	1,017,500	N/A	338,100	264,410	264,410
SARs Accelerated Vesting	1,582,023	1,582,023	234,137	362,316	—	251,752
RSUs/PRSUs Accelerated Vesting (2)	4,342,105	6,597,851	1,583,596	2,827,074	—	1,477,626
Total	8,662,639	13,145,505	2,682,110	5,236,244	1,036,559	3,518,086

(1)The amount reported assumes that the Severance Agreements would provide Mr. Vijayvargiya and Ms. Chadwick with an amount equal to the applicable target level without pro-ration, regardless of actual performance and for Mr. Chemnitz that the Materion Non-CIC Severance Policy would provide a prorated amount based on actual performance not to exceed a target payout.

(2)The amount reported assumes that (a) the 2021-2023 PRSUs have already been earned as of the termination date and (b) the amounts reported for Mr. Vijayvargiya and Ms. Chadwick for accelerated vesting of RSUs and PRSUs for terminations in connection with a change in control reflect double trigger acceleration amounts and target performance for the 2022-2024 and 2023-2025 PRSUs. The Materion Non-CIC Severance Policy does not provide for any vesting acceleration for RSUs or PRSUs.

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Benefits Payable Upon Retirement, Death or Disability Under Incentive Plans

Annual Cash Incentive Plan

Management Incentive Plan (MIP). The NEOs are participants in our MIP, which provides for annual, lump-sum cash payments that are based on achieving pre-established financial objectives and qualitative performance factors. Generally, an executive must be employed on the day of payment in order to receive an award under the MIP. However, if an executive dies while employed by us or any subsidiary, or retires under one of our retirement plans during a plan year, the executive will receive an award pro-rated to the beginning of the month following the executive’s termination date. In order to be eligible for a prorated MIP payout. the executive must serve at least four months in the fiscal year. Assuming that the MIP payouts would not be pro-rated in the event of a termination due to death or retirement occurring on December 29, 2023, the payout of 2023 MIP awards on such a termination (as applicable) would have been $650,793, $216,249 and $169,116 for Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz, respectively.

2006 Stock Incentive Plan (As Amended and Restated as of May 3, 2017)

The Materion Corporation 2006 Stock Incentive Plan was last amended and restated as of May 3, 2017 (2006 Plan). The 2006 Plan authorizes the Compensation Committee to provide equity-based compensation in the form of Performance Restricted Stock, Performance Shares, Performance Units, Restricted Stock, Option Rights, SARs, RSUs and PRSUs for the purpose of providing incentives and rewards for superior performance.

Restricted Stock Units (RSUs). Each of the NEOs has received grants of RSUs under the 2006 Plan. The RSU award agreements provide that all outstanding RSUs will immediately vest if the NEO dies or becomes permanently disabled while employed by the Company or any subsidiary during the applicable vesting period. RSU award agreements provide that the grants are forfeited if the NEO is not employed on the date of vesting, even if the NEO retires, unless otherwise determined by the Committee.

Assuming a termination of employment due to death, or permanent disability on December 29, 2023, the value of accelerated vesting of the RSUs would have been $2,648,146, $1,948,697 and $904,794 for Mr.Vijayvargiya, Ms. Chadwick, and Mr. Chemnitz, respectively.

Stock Appreciation Rights (SARs). Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz have received grants of SARs under the 2006 Plan. The award agreements generally provide that SARs terminate 190 days after termination of employment, and vested SARs can be exercised during that period. However, the award agreements also provide that all SARs will immediately vest if the executive dies or becomes permanently disabled during the applicable vesting period while employed by the Company or any subsidiary; the vested SARs would then terminate one year after the termination of employment due to the NEO's death or disability (or until the expiration of the term of the SARs, if earlier). If the NEO retires (as described in the award agreement) during the applicable vesting period, then the SARs will be forfeited if the executive is not employed on the date of vesting, pursuant to the award agreement, unless otherwise determined by the Committee.

Assuming a termination of employment due to death or permanent disability on December 29, 2023, the value of any accelerated or continued vesting of the SARs would have been $1,582,023, $362,316 and $251,752 for Mr.Vijayvargiya, Ms. Chadwick, and Mr. Chemnitz, respectively, at the closing price on December 29, 2022 of $130.13.

Performance-based Restricted Stock Units (PRSUs). Under the 2006 Plan, Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz received grants of PRSUs in 2021, 2022 and 2023. Generally, all or a percentage of the PRSUs become non-forfeitable and payable only if certain performance goals are met. However, the award agreements provide that 100% of the PRSUs will immediately become non-forfeitable and payable if the executive dies or becomes permanently disabled while employed by the Company or any subsidiary during the performance period. If the NEO retires (as described in the award agreement) during the applicable performance period, then the PRSUs will continue to be eligible to become non-forfeitable and payable as if the NEO continued to be employed during the performance period. Assuming a termination of employment due to death or permanent disability on December 29, 2023, the value of the accelerated vesting of the PRSUs would have been $3,949,706, $878,378 and $572,832 for Mr. Vijayvargiya, Ms. Chadwick and Mr. Chemnitz, respectively. Assuming a termination of employment due to retirement on December 29, 2023, the value of continued non-forfeitability of the PRSUs would have been $572,832 for Mr. Chemnitz.

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Equity Compensation Plan Information

The table below sets forth information as of December 31, 2023:

Plan Category	Number of Securities to be Issued Upon Exercise of Outstanding Options, Warrants and Rights (a)	Weighted-average Exercise Price of Outstanding Options, Warrants and Rights (b)(3)		Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (excluding securities reflected in column (a))(4)
Equity compensation plans approved by security holders:
2006 Stock Incentive Plan(1)	524,700	$	58.38	620,220
2006 Non-employee Director Equity Plan(2)	9,184	NA		40,280
Equity compensation plans not approved by security holders:
None	—	—		—
Total	533,884	NA		660,500

NA = Not applicable because restricted stock unit awards do not have an exercise price.

(1) Consists of stock appreciation rights, restricted stock units, and performance-based restricted stock units awarded under our 2006 Stock Incentive Plan. This number includes performance-based restricted stock units assuming target payout levels.

(2) Consists of restricted stock units awarded under our 2006 Non-employee Director Equity Plan.

(3) Represents the weighted-average exercise price of outstanding stock appreciation rights.

(4) Represents the number of shares of common stock available to be awarded as of December 31, 2023, all of which may be issued for awards other than options, warrants or rights.

Pay Versus Performance

As required by Section 953(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, and Item 402(v) of Regulation S-K, we are providing the following information about the relationship between executive compensation calculated according to SEC requirements (which includes value related to awards and option awards as if they were vested at the end of the year presented) and certain financial performance of the Company. For further information concerning the Company’s variable pay-for-performance philosophy and how the Company’s aligns executive compensation with the Company’s performance, refer to “Compensation Discussion and Analysis.”

Pay Versus Performance
Year	Summary Compensation Table Total For PEO1 ($)	Compensation Actually Paid to PEO2 ($)	Average Summary Compensation Table Total for non-PEO NEOs3 ($)	Average Compensation Actually Paid to non-PEO NEOs4 ($)	Value of Initial Fixed $100 Investment Based on:				Net Income (GAAP) (000's)7 ($)	Adjusted EBIT (000's)8 ($)
					Total Shareholder Return5		Peer Group Total Shareholder Return6
(a)	(b)	(c)	(d)	(e)	(f)		(g)		(h)	(i)
2023	5,971,864	11,078,631	1,728,063	2,932,628	$	222.19	$	156.65	95,702	139,154
2022	4,502,542	5,329,286	1,420,716	1,542,675	$	149.60	$	130.56	85,990	136,919
2021	4,453,834	7,853,142	1,476,795	2,220,581	$	156.22	$	142.13	72,474	99,457
2020	2,572,972	3,921,040	899,344	352,807	$	107.95	$	121.06	15,462	45,852

1 The dollar amounts reported in column (b) are the amounts of total compensation reported for Mr. Vijayvargiya for each corresponding year in the “Total” column of the applicable year's Summary Compensation Table. Refer to “Executive Compensation – Executive Compensation Tables – Summary Compensation Table.”

2 The dollar amounts reported in column (c) represent the amount of “compensation actually paid” (or "CAP") to Mr. Vijayvargiya, as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts include in part the

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compensation paid to Mr. Vijayvargiya based on certain financial performance of the Company achieved as well as value related to equity compensation that would have been paid if the stock and option awards vested at the end of the year presented.

	Reported Summary Compensation Table Total for PEO ($)	Reported Value of Equity Awards(a) ($)	Equity Award Adjustments(b) ($)	Reported Change in the Actuarial Present Value of Pension Benefits ($)	Pension Adjustments ($)	Compensation Actually Paid to PEO ($)
2023	5,971,864	(4,323,579)	9,430,346	—	—	11,078,631
2022	4,502,542	(2,409,248)	3,235,992	—	—	5,329,286
2021	4,453,834	(2,247,632)	5,646,940	—	—	7,853,142
2020	2,572,972	(1,656,754)	3,004,822	—	—	3,921,040

(a) The grant date fair value of equity awards represents the total of the amounts reported in the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table for the applicable year.

(b) The equity award adjustments for each applicable year include the addition (or subtraction, as applicable) of the following: (i) the year-end fair value of any equity awards granted in the applicable year that are outstanding and unvested as of the end of the year; (ii) the amount of change as of the end of the applicable year (from the end of the prior fiscal year) in fair value of any awards granted in prior years that are outstanding and unvested as of the end of the applicable year; (iii) for awards that are granted and vest in same applicable year, the fair value as of the vesting date; (iv) for awards granted in prior years that vest in the applicable year, the amount equal to the change as of the vesting date (from the end of the prior fiscal year) in fair value; (v) for awards granted in prior years that are determined to fail to meet the applicable vesting conditions during the applicable year, a deduction for the amount equal to the fair value at the end of the prior fiscal year; and (vi) the dollar value of any dividends, dividend equivalents or other earnings paid on stock or option awards in the applicable year prior to the vesting date that are not otherwise reflected in the fair value of such award or included in any other component of total compensation for the applicable year. The valuation assumptions used to calculate fair values did not materially differ from those disclosed at the time of grant. The amounts deducted or added in calculating the equity award adjustments are as follows:

	Year End Fair Value of Equity Awards ($)	Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards ($)	Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year ($)	Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year ($)	Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year ($)	Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation ($)	Total Equity Award Adjustments ($)
2023	5,109,574	1,841,929	—	2,478,843	—	—	9,430,346
2022	2,725,884	245,856	—	264,252	—	—	3,235,992
2021	3,244,507	896,712	—	1,505,721	—	—	5,646,940
2020	2,243,910	858,882	—	(97,970)	—	—	3,004,822

3 The dollar amounts reported in column (d) represent the average of the amounts reported for the Company’s named executive officers (NEOs) as a group (excluding Mr. Vijayvargiya) in the “Total” column of the Summary Compensation Table in each applicable year. The NEOs included for purposes of calculating the average amounts in 2023 through 2021 are Greg Chemnitz and Shelly Chadwick. The NEOs included for purposes of calculating the average amounts in 2020 are Greg Chemnitz, Shelly Chadwick, Joseph Kelley and Stephen Shamrock.

4 The dollar amounts reported in column (e) represent the average amount of “compensation actually paid” to the NEOs as a group (excluding Mr. Vijayvargiya), as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts include in part the compensation paid to the NEOs based on certain financial performance of the Company achieved as well as- value related to equity compensation that would have been paid if the stock and option awards vested at the end of the year presented.

In accordance with the requirements of Item 402(v) of Regulation S-K, the following adjustments were made to average total compensation for the NEOs as a group (excluding Mr. Vijayvargiya):

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	Average Reported Summary Compensation Table Total for Non-PEO NEOs ($)	Reported Value of Equity Awards ($)	Equity Award Adjustments(a) ($)	Reported Change in the Actuarial Present Value of Pension Benefits ($)	Pension Adjustments ($)	Compensation Actually Paid to Non-PEO NEOs ($)
2023	1,728,063	(1,007,306)	2,211,871	—	—	2,932,628
2022	1,420,716	(583,932)	705,891	—	—	1,542,675
2021	1,476,795	(569,016)	1,312,802	—	—	2,220,581
2020	899,344	(445,818)	(57,587)	(43,132)	—	352,807

(a) The amounts deducted or added in calculating the total average equity award adjustments are included below. The methodology for calculating each applicable adjustment is consistent with the methodology described in note (2)(b) above.

	Year End Fair Value of Equity Awards ($)	Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards ($)	Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year ($)	Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year ($)	Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year ($)	Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation ($)	Total Equity Award Adjustments ($)
2023	1,181,805	480,469	—	549,597	—	—	2,211,871
2022	682,354	30,549	—	(7,012)	—	—	705,891
2021	810,136	303,517	—	199,149	—	—	1,312,802
2020	408,365	53,565	—	(33,167)	(486,350)	—	(57,587)

5 Cumulative TSR is calculated by dividing the sum of the cumulative amount of dividends for the measurement period, assuming dividend reinvestment, and the difference between the Company’s share price at the end and the beginning of the measurement period by the Company’s share price at the beginning of the measurement period assuming $100 initial investment on December 31, 2019. The measurement period for 2020 is January 1, 2020 through December 31, 2020. The measurement period for 2021 is January 1, 2020 through December 31, 2021. The measurement period for 2022 is January 1, 2020 through December 31, 2022. The measurement period for 2023 is January 1, 2020 through December 31, 2023.

6 Represents cumulative TSR for S&P 600 - Materials Index for each respective measurement period assuming $100 initial investment on December 31, 2019. The measurement period for 2020 is January 1, 2020 through December 31, 2020. The measurement period for 2021 is January 1, 2020 through December 31, 2021. The measurement period for 2022 is January 1, 2020 through December 31, 2022. The measurement period for 2023 is January 1, 2020 through December 31, 2023.

7 The dollar amounts reported represent the amount of GAAP net income reflected in the Company’s audited financial statements for the applicable year.

8 Adjusted EBIT is defined as earnings before interest, taxes, and other unusual charges. See the "2023 Company Performance Overview" section for further description as well as Appendix A for reconciliation of non-GAAP to GAAP financial measures. While the Company uses numerous financial and non-financial performance measures for the purpose of evaluating performance for the Company’s compensation programs, the Company has determined that Adjusted EBIT is the financial performance measure that, in the Company’s assessment, represents the most important performance measure (that is not otherwise required to be disclosed in the table) used by the Company to link compensation actually paid to the Company’s NEOs, for the most recently completed fiscal year, to Company performance.

2023 Tabular List

As described in greater detail in “Compensation Discussion and Analysis,” the Company’s executive compensation program reflects a variable pay-for-performance philosophy. The metrics that the Company uses for both our long-term and short-term incentive awards are selected based on an objective of incentivizing our NEOs to increase the value of our enterprise for our shareholders. The most important financial performance measures used by the Company to link executive compensation

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actually paid to the Company’s NEOs, for the most recently completed fiscal year, to the Company's performance are as follows:

•Adjusted EBIT

•Relative TSR

•Return on Invested Capital

•Simplified Free Cash Flow

•Value-Added Sales

Description of Relationships Between Compensation Actually Paid and Certain Financial Performance Measure Results

In accordance with Item 402(v) of Regulation S-K, the Company is providing the following descriptions of the relationships between certain information presented in the Pay Versus Performance table.

Compensation Actually Paid and Cumulative TSR

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Compensation Actually Paid and Net Income

Compensation Actually Paid and Adjusted EBIT

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CEO Pay Ratio Disclosure

For 2023, the ratio of the annual total compensation of Mr. Vijayvargiya, our Chief Executive Officer (CEO Compensation), to the median of the annual total compensation of all of our employees and those of our consolidated subsidiaries other than Mr. Vijayvargiya (Median Annual Compensation) was 76 to 1. We note that, due to our permitted use of reasonable estimates and assumptions in preparing this pay ratio disclosure, the disclosure may involve a degree of imprecision, and thus this pay ratio disclosure is a reasonable estimate calculated in a manner consistent with Item 402(u) of Regulation S-K using the data and assumptions described below. In this summary, we refer to the employee who received the Median Annual Compensation as the “Median Employee.” For purposes of this disclosure, the date used to identify the Median Employee was December 31, 2023 (the Determination Date).

For purposes of this pay ratio disclosure, CEO Compensation was $5,971,864. CEO Compensation for purposes of this disclosure represents the total compensation reported for Mr. Vijayvargiya under “2023 Summary Compensation Table” for the 2023 fiscal year.

For purposes of this pay ratio disclosure, we have used the same Median Employee that we identified in our 2023 proxy statement, because there has been no change in our employee population or employee compensation arrangements that we believe would significantly impact the pay ratio disclosure. The Median Annual Compensation was $78,999, and was calculated by totaling for our Median Employee all applicable elements of compensation for the 2023 fiscal year in accordance with Item 402(c)(2)(x) of Regulation S-K. To identify the Median Employee, we measured the compensation as of December 31, 2022 for 3,653 employees, representing all full-time, part-time, seasonal and temporary employees of us and our consolidated subsidiaries as of the Determination Date. This number does not include any independent contractors or “leased” workers, as permitted by the applicable SEC rules. This number also does not exclude any non-U.S. employees (although such exclusion may have been permitted under applicable SEC rules). This compensation measurement was calculated by totaling, for each employee, taxable earnings for 2022. Specifically excluded from the calculation were relocation expenses and hiring bonuses. Further, we did not utilize any statistical sampling or cost-of-living adjustments for purposes of this pay ratio disclosure. A portion of our employee workforce (full-time and part-time) identified above worked for less than the full fiscal year due to commencing employment after January 1, 2022. In determining the Median Employee, we annualized the total compensation for such individuals (but avoided creating full-time equivalencies) based on reasonable assumptions and estimates relating to our employee compensation program, including incentive compensation plans.

2.     RATIFICATION OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Audit Committee has appointed Ernst & Young LLP (EY) as the independent registered public accounting firm for the year ending December 31, 2024 and presents this selection to the shareholders for ratification. EY will audit our consolidated financial statements for the year ending December 31, 2024 and perform other permissible, pre-approved services. Representatives of EY are expected to be present at the 2024 annual meeting. These representatives will have the opportunity to make a statement if they desire to do so and will respond to appropriate questions.

Pre-approval Policy for External Auditing Services

The Audit Committee has established a policy regarding pre-approval of all audit and non-audit services expected to be performed by our independent registered public accounting firm, including the scope of and estimated fees for such services. Our independent registered public accounting firm, after consultation with management, will submit a budget, based on guidelines set forth in the policy, for the Audit Committee’s approval for its annual audit and associated quarterly reviews and procedures. Management, after consultation with our independent registered public accounting firm, will submit a budget, based on guidelines set forth in the policy, for the Audit Committee’s approval for audit-related, tax and other services to be provided by our independent registered public accounting firm for the upcoming fiscal year. The policy prohibits our independent registered public accounting firm from providing certain services described in the policy as prohibited services.

Fees for professional services provided by our independent registered public accounting firm in each of the last two fiscal years, in each of the following categories are as follows:

	2023		2022
Audit Fees	$	1,890,165	$	1,864,360
Audit-Related Fees	107,500		35,000
Tax Fees	458,000		764,000
Total	$	2,455,665	$	2,663,360

Audit Fees

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Audit fees consist of fees billed for professional services rendered for the integrated audit of our consolidated financial statements and the effectiveness of internal control over financial reporting and review of the interim consolidated financial statements included in quarterly reports and audits in connection with statutory requirements.

Audit-related Fees

Audit-related services principally include work performed related to agreed upon procedures and permitted advisory services in 2023 and agreed upon procedures in 2022.

Tax Fees

Tax fees include corporate tax compliance, tax advice and tax planning.

The approval of Proposal 2 requires the affirmative vote of a majority of the votes cast, in person or by proxy, on such proposal at the 2024 annual meeting.

The Board of Directors of Materion Corporation unanimously recommends a vote FOR Proposal 2 to ratify Ernst & Young LLP as the independent registered public accounting firm for the year 2024.

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3.     ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION

In this Proposal 3, pursuant to Section 14A of the Exchange Act, we are providing our shareholders the opportunity to cast an advisory (non-binding) vote on the compensation paid to the Company’s named executive officers, as disclosed in the “Compensation Discussion and Analysis” and “Executive Compensation” above, pursuant to the compensation rules of the SEC. While this vote is advisory, and not binding on the Company, the Board values the opinions of our shareholders and the Compensation Committee expects to review the results of the vote and take them into consideration when making future decisions regarding executive compensation. Currently, advisory “Say-on-Pay” votes are scheduled to be held once every year, with the next "Say-on-Pay" vote to occur at our 2025 annual meeting of shareholders.

We are asking our shareholders to indicate their support for the compensation of our named executive officers as described in this proxy statement. This vote is not intended to address any specific item of compensation, but rather the overall compensation of our named executive officers and the executive compensation program and practices described in this proxy statement. Please read the Compensation Discussion and Analysis and the executive compensation tables and narrative disclosure for a detailed explanation of our executive compensation program and practices. Accordingly, we are asking our shareholders to vote “FOR” the following resolution:

“RESOLVED, that the compensation of the named executive officers of the Company as disclosed pursuant to the compensation rules of the SEC, including the Compensation Discussion and Analysis, the compensation tables and any related material disclosed in this proxy statement, is hereby APPROVED.”

The approval of Proposal 3 requires the affirmative vote of a majority of the votes cast, in person or by proxy, on such proposal at the 2024 annual meeting.

The Board of Directors of Materion Corporation unanimously recommends a vote FOR Proposal 3 relating to the advisory vote to approve named executive officer compensation.

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SHAREHOLDER PROPOSALS

We must receive by November 26, 2024 any proposal of a shareholder intended to be presented at the 2025 annual meeting of Materion Corporation’s shareholders and to be included in our proxy, notice of meeting and proxy statement related to the 2025 annual meeting pursuant to Rule 14a-8 under the Exchange Act. These proposals should be submitted by certified mail, return receipt requested.

Proposals of shareholders submitted outside the processes of Rule 14a-8 under the Exchange Act in connection with the 2025 annual meeting must be received by us on or before the date determined in accordance with our code of regulations or they will be considered untimely under Rule 14a-4(c) of the Exchange Act. Under our code of regulations, proposals generally must be received by us no fewer than 60 and no more than 90 days before an annual meeting. However, if the date of a meeting is more than ten days from the anniversary of the previous year’s meeting and we do not give notice of the meeting at least 75 days in advance, proposals must be received within ten days from the date of our notice.

In addition to satisfying the requirements under our code of regulations, to comply with the universal proxy rules, shareholders

who intend to solicit proxies in support of director nominees other than our nominees must provide notice that sets forth any

additional information required by Rule 14a-19 under the Exchange Act, which notice must be postmarked or transmitted

electronically to our Secretary at our principal executive offices no later than 60 calendar days prior to the anniversary date of

the 2024 Annual Meeting (for the 2025 Annual Meeting, no later than March 10, 2024). However, if the date of the 2025

Annual Meeting is changed by more than 30 calendar days from such anniversary date, then notice must be provided by the

later of 60 calendar days prior to the date of the 2025 Annual Meeting or the 10th calendar day following the day on which

public announcement of the date of the 2025 Annual Meeting is first made.

Our proxy related to the 2025 annual meeting of Materion Corporation’s shareholders will give discretionary authority to the proxy holders to vote with respect to all proposals submitted outside the processes of Rule 14a-8 received by us after the date determined in accordance with our code of regulations.

Important Notice Regarding the Availability of Proxy Materials for

the Annual Meeting of Shareholders to be held on May 9, 2024

This proxy statement, along with our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 and our 2023 Annual Report, are available free of charge at http://investor.shareholder.com/materion/annuals.cfm.

Unless we have received contrary instructions from one or more of the shareholders sharing your address, we will send only one Notice of Internet Availability to your address. You may request a separate copy of the Notice of Internet Availability be sent to your address by calling 1-866-540-7095 or by writing to Broadridge Householding Department, 51 Mercedes Way, Edgewood, NY 11717. Shareholders sharing an address who now receive multiple copies of the Notice of Internet Availability may request delivery of a single set by calling the above number or writing to the above address.

OTHER MATTERS

We do not know of any matters to be brought before the meeting except as indicated in the notice. However, if any other matters properly come before the meeting for action of which we did not have notice prior to March 10, 2024 or that applicable laws otherwise permit proxies to vote on a discretionary basis, it is intended that the person authorized under solicited proxies may vote or act thereon in accordance with his or her own judgment.

By order of the Board of Directors,

MATERION CORPORATION

Gregory R. Chemnitz

Secretary

Mayfield Heights, Ohio

March 26, 2024

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Materion Corporation

Reconciliation of Non-GAAP Financial Measures - Profitability

(Unaudited)

(millions)
	2023		2022
Net Sales - GAAP	$	1,665.2	$	1,757.1
Less: pass-through metal costs	538.1		642.7
Value-added sales	$	1,127.1	$	1,114.4
Net income	$	95.7	$	86.0
Income tax expense	12.2		17.1
Interest expense - net	31.3		21.9
Depreciation, depletion and amortization	61.6		53.4
Consolidated EBITDA	$	200.8	$	178.4
Consolidated EBIT	$	139.2	$	125.0
External Reporting Special Items
Restructuring and cost reduction	11.1		1.6
Pension settlement	0.2		(0.5)
Merger and acquisition costs	—		12.4
Additional start-up resources and scrap	5.6		4.1
Adjusted EBITDA	$	217.7	$	196.0
Adjusted EBIT	$	156.1	$	142.6
Special Items excluded from Incentive Compensation Adjusted EBIT
Restructuring and cost reduction	11.1		1.6
Pension settlement	0.2		—
Additional start-up resources and scrap	5.6		4.1
Incentive Compensation Adjusted EBIT	$	139.2	$	136.9
GAAP Net income	$	95.7	$	86.0
External Reporting Special Items	16.9		17.6
Tax impact of special Items and Tax Special Items	(4.4)		(3.9)
Adjusted Net Income	$	108.2	$	99.7
External Reporting Acquisition Amortization - net of tax	9.8		9.8
Adjusted Net Income excluding Acquisition Amortization	$	118.0	$	109.5
Shares Outstanding - Diluted	20,911		20,760
GAAP EPS - Diluted	$	4.58	$	4.14
Adjusted EPS - Diluted	$	5.17	$	4.80
Adjusted EPS excluding Acquisition Amortization - Diluted	$	5.64	$	5.27

The cost of gold, silver, platinum, palladium, copper, ruthenium, iridium, rhodium, rhenium, and osmium is passed through to customers and, therefore, the trends and comparisons of net sales are affected by movements in the market price of these metals. Internally, management also reviews net sales on a value-added basis. Value-added sales is a non-GAAP (generally accepted accounting principles) financial measure that deducts the value of the pass-through metals sold from net sales. Value-added sales allows management to assess the impact of differences in net sales between periods or segments and analyze the resulting margins and profitability without the distortion of the movements in pass-through metal prices. The dollar amount of gross margin and operating profit is not affected by the value-added sales calculation. The Company sells other metals and materials that are not considered direct pass throughs, and these costs are not deducted from net sales to calculate value-added sales.

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The Company’s pricing policy is to pass the cost of these metals on to customers in order to mitigate the impact of price volatility on the Company’s results from operations. Value-added information is being presented since changes in metal prices may not directly impact profitability. It is the Company’s intent to allow users of the financial statements to review sales with and without the impact of the pass-through metals.

In addition to presenting financial information prepared in accordance with U.S. generally accepted accounting principles (GAAP), this proxy statement contains financial measures, including operating profit, earnings before interest and taxes, net income, and earnings per share, on a non-GAAP basis. As detailed in the above reconciliation, we have adjusted the results for certain special items such as restructuring and cost reductions (which includes costs associated with temporarily idled facilities as a result of decreased demand), additional start up resources and scrap, merger and acquisition costs, and certain discrete income tax items from the applicable GAAP financial measure. Internally, management reviews the results of operations without the impact of these costs in order to assess the profitability from ongoing activities. We are providing this information because we believe it will assist investors in analyzing our financial results and, when viewed in conjunction with the GAAP results, provide a more comprehensive understanding of the factors and trends affecting our operations.

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