MTRN / Materion Corporation - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

NAI-5001679929v1 AMENDMENT NO. 2 TO AMENDED AND RESTATED PRECIOUS METALS CONSIGNMENT AGREEMENT This AMENDMENT NO. 2 TO AMENDED AND RESTATED PRECIOUS METALS CONSIGNMENT AGREEMENT (this “Amendment”) is entered into as of August 20, 2025 by and between

executioncopy-xbmoamendm NAI-5001679929v1 AMENDMENT NO. 2 TO AMENDED AND RESTATED PRECIOUS METALS CONSIGNMENT AGREEMENT This AMENDMENT NO. 2 TO AMENDED AND RESTATED PRECIOUS METALS CONSIGNMENT AGREEMENT (this “Amendment”) is entered into as of August 20, 2025 by and between BANK OF MONTREAL, a Canadian chartered bank (the “Metal Consignor”), and each of MATERION CORPORATION, an Ohio corporation (“

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 20, 2025 MATERION CORPORATI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 20, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 8, 2025 MATERION CORPORATIO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 8, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

MATERION CORPORATION REPORTS SECOND-QUARTER 2025 FINANCIAL RESULTS

MATERION CORPORATION REPORTS SECOND-QUARTER 2025 FINANCIAL RESULTS MAYFIELD HEIGHTS, Ohio – Materion Corporation (NYSE: MTRN) today reported second-quarter 2025 financial results and affirmed full year outlook.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 27, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2025 MATERION CORPORATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Comm

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended June 27, 2025

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended June 27, 2025 Materion Natural Resources Inc.

Fifth Amended and Restated Credit Agreement, dated as of June 26, 2025, by and among Materion Corporation, the foreign subsidiary borrowers party thereto from time to time, the financial institutions party thereto as lenders, JPMorgan Chase Bank, N.A., as administrative agent, Wells Fargo Bank National Association and Bank of America, N.A., as co-syndication agents, KeyBank National Association and PNC Bank, National Association, as co-documentation agents, and JPMorgan Chase Bank, N.A., Wells Fargo Securities, LLC and BofA Securities, Inc., as joint bookrunners and joint lead arrangers

materion-2025jpmcreditag US-DOCS\159920855.12 EXHIBIT 10.1 EXECUTION COPY FIFTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of June 26, 2025 among MATERION CORPORATION The Foreign Subsidiary Borrowers Party Hereto The Lenders Party Hereto JPMORGAN CHASE BANK, N.A. as Administrative Agent WELLS FARGO BANK, NATIONAL ASSOCIATION and BANK OF AMERICA, N.A. as Co-Syndication Agents and KEYBANK NATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 26, 2025 MATERION CORPORATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 26, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Comm

0. UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUA

0. UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPORATI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 6070 Parkland Blvd. Mayfield Heights, Ohio 44124 (Address of princ

Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form

Exhibit 1.01 Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2024 to December 31, 2024 Overview This Conflict Minerals Report (this “Report”) of Materion Corporation (including its consolidated subsidiaries, “we”, “Materion” or the “Company”) has been prepared pursuant to Rule 13p-1 (the “Rules”) as promulgated under the Securities Exchange Act of 1934 for

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 20, 2025 MATERION CORPORATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 20, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2025 MATERION CORPORATION (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Filing Fee Table*

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Materion Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit (2) Maximum Aggregate Offering Price (2) Fee Rate Amount of Registration Fee Equity Common Stock, no par value Other 965,000 $80.

Materion Corporation 2025 Equity and Incentive Compensation Plan

Exhibit 4.3 MATERION CORPORATION 2025 EQUITY AND INCENTIVE COMPENSATION PLAN 1.Purpose. The purpose of this Plan is to permit award grants to non-employee Directors, officers and other employees of the Company and its Subsidiaries, and certain consultants to the Company and its Subsidiaries, and to provide to such persons incentives and rewards for service and/or performance. 2.Definitions. As use

As filed with the Securities and Exchange Commission on May 7, 2025.

As filed with the Securities and Exchange Commission on May 7, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Materion Corporation (Exact name of registrant as specified in its charter) Ohio 34-1919973 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer

Power of Attorney*

Exhibit 24.1 POWER OF ATTORNEY Each of the undersigned officers and directors of Materion Corporation, an Ohio corporation (the “Company”), does hereby make, constitute and appoint Jugal K. Vijayvargiya, Shelly M. Chadwick and Gregory R. Chemnitz, and each of them, with full power of substitution and resubstitution, as attorney of the undersigned, to sign, execute and file with the Securities and

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 28, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION C

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended March 28, 2025

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended March 28, 2025 Materion Natural Resources Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Materion and Subsidiaries Annual Incentive Plan for the 2025 Plan Year*

Exhibit 10.1 MATERION and SUBSIDIARIES ANNUAL INCENTIVE PLAN Summary Plan Document I. Introduction The Materion and Subsidiaries Annual Incentive Plan (the “Plan”) has been established by the Compensation and Human Capital Committee (the “Committee”), of the Company’s Board of Directors to provide incentive compensation to certain eligible employees based principally on annual financial performanc

Form of 2025 Performance-Based Restricted Stock Units Agreement under the Materion Corporation 2006 Stock Incentive Plan (As Amended and Restated as of May 3, 2017), covering grants made in 2025*

EXHIBIT 10.2 MATERION CORPORATION Performance-Based Restricted Stock Units Agreement WHEREAS, (the “Grantee”) is an employee of Materion Corporation, an Ohio corporation (the “Corporation”), or a Subsidiary; and WHEREAS the execution of an agreement in the form hereof (this “Agreement”) has been authorized by resolution of the Compensation Committee (the “Committee”) of the Board of Directors of t

MATERION CORPORATION REPORTS FIRST QUARTER 2025 FINANCIAL RESULTS

MATERION CORPORATION REPORTS FIRST QUARTER 2025 FINANCIAL RESULTS MAYFIELD HEIGHTS, Ohio – Materion Corporation (NYSE: MTRN) today reported first quarter 2025 financial results and provided an update to the full year outlook.

Materion Executive Deferred Compensation Program (formerly known as the Materion Corporation Executive Deferred Compensation Plan II), effective January 28, 2025

EXHIBIT 10.3 MATERION CORPORATION EXECUTIVE DEFERRED COMPENSATION PROGRAM TABLE OF CONTENTS Page ARTICLE 2 DEFINITIONS 1 2.1 Account 1 2.2 Base Salary 1 2.3 Board 1 2.4 Bonus 2 2.5 Code 2 2.6 Company 2 2.7 Compensation Committee 2 2.8 Deferred Compensation 2 2.9 Disability 2 2.10 Election Agreement 2 2.11 Employee 2 2.12 Employer 2 2.13 ERISA 2 2.14 In-Service Sub-Account 2 2.15 Nonelective Deferr

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. )

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)

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Year Ended December 31, 2024.

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Year Ended December 31, 2024 Materion Natural Resources Inc.

Materion Insider Trading Policy

Exhibit 19.1 INSIDER TRADING POLICY BACKGROUND: Federal and state securities laws prohibit the purchase or sale of a company's securities by persons who are aware of material information about that company that is not generally known or available to the public. These laws also prohibit persons who are aware of such material non-public information from disclosing this information to others who may

Materion Corporation Reports Fourth Quarter and Full-Year 2024 Results, Provides 2025 Outlook and Establishes New Mid-Term Profitability Target

Materion Corporation Reports Fourth Quarter and Full-Year 2024 Results, Provides 2025 Outlook and Establishes New Mid-Term Profitability Target MAYFIELD HEIGHTS, Ohio – February 19, 2025 - Materion Corporation (NYSE: MTRN) today reported fourth quarter and full-year 2024 financial results, provided 2025 earnings guidance and announced a new mid-term profitability target.

to Fourth Amended and Restated Credit Agreement dated as of October 27, 2021, by and among Materion Corporation (the “Company”), Materion Netherlands B.V. (the “Dutch Borrower” and, together with the Company, the “Borrowers”), the financial institutions listed on the signature pages hereof and JPMorgan Chase Bank, N.A., as Administrative Agent (the “Administrative Agent”), under that certain Fourth Amended and Restated Credit Agreement dated as of October 27, 2021 by and among the Company, the Dutch Borrower, the other Foreign Subsidiary Borrowers from time to time party thereto

US-DOCS\139675000.5 EXECUTION COPY AMENDMENT NO. 2 Dated as of March 6, 2023 to FOURTH AMENDED AND RESTATED CREDIT AGREEMENT Dated as of October 27, 2021 THIS AMENDMENT NO. 2 (this “Amendment”) is made as of March 6, 2023 by and among Materion Corporation (the “Company”), Materion Netherlands B.V. (the “Dutch Borrower” and, together with the Company, the “Borrowers”), the financial institutions li

Amendment No. 3 dated as of December 19, 2024 to Fourth Amended and Restated Credit Agreement dated as of October 27, 2021, by and among Materion Corporation (the “Company”), Materion Netherlands B.V. (the “Dutch Borrower” and, together with the Company, the “Borrowers”), the financial institutions listed on the signature pages hereof and JPMorgan Chase Bank, N.A., as Administrative Agent (the “Administrative Agent”), under that certain Fourth Amended and Restated Credit Agreement dated as of October 27, 2021 by and among the Company, the Dutch Borrower, the other Foreign Subsidiary Borrowers from time to time party thereto

US-DOCS\155644137.4 EXECUTION COPY AMENDMENT NO. 3 Dated as of December 19, 2024 to FOURTH AMENDED AND RESTATED CREDIT AGREEMENT Dated as of October 27, 2021 THIS AMENDMENT NO. 3 (this “Amendment”) is made as of December 19, 2024 by and among Materion Corporation (the “Company”), Materion Netherlands B.V. (the “Dutch Borrower” and, together with the Company, the “Borrowers”), the financial institu

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of MATERION CORPORATION, an Ohio corporation (the “Corporation”), hereby constitutes and appoints Jugal K.

Materion Directors, Officers & Key Employees Insider Trading Policy

Exhibit 19.2 DIRECTORS, OFFICERS & KEY EMPLOYEES INSIDER TRADING POLICY POLICY PRINCIPLE: The Company wishes to facilitate compliance by directors, executive officers and certain key employees ("Insiders") with securities laws and regulations pertaining to trades in Materion Corporation securities. Preventive procedures minimize the possibility of a violation of the securities laws. PRACTICE AND I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 19, 2025 MATERION CORPORA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 19, 2025 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File Number 1-15885 MATERION CORPORAT

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of Registrant The Company has the following subsidiaries, all of which are wholly owned and included in the consolidated financial statements.

MATERION CORPORATION Compensation Clawback Policy Effective October 2, 2023

Exhibit 97 MATERION CORPORATION Compensation Clawback Policy Effective October 2, 2023 Purpose As required pursuant to the listing standards of the New York Stock Exchange (the “Stock Exchange”), Section 10D of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Rule 10D-1 under the Exchange Act, the Board of Directors (the “Board”) of Materion Corporation (the “Company”) has adopted this Compensation Clawback Policy (the “Policy”) to empower the Company to recover Covered Compensation (as defined below) erroneously awarded to a Covered Officer (as defined below) in the event of an Accounting Restatement (as defined below).

Materion Corporation and Subsidiaries Reconciliation of Net Sales to Value-added Sales, Net Income to EBITDA and Adjusted EBITDA

MATERION CORPORATION 6070 Parkland Boulevard, Mayfield Heights, OH 44124 216.486.4200 f 216.383.4005 www.materion.com December 23, 2024 CORRESPONDENCE FILING VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Technology 100 F Street, N.E. Washington, D.C. 20549 Attention: Stephany Yang   Andrew Blume Re: Materion Corporation   Form 10-K for the Fiscal Year

MTRN / Materion Corporation / Capital Research Global Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Materion Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to des

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 27, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERI

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended September 27, 2024

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended September 27, 2024 Materion Natural Resources Inc.

Materion Corporation Reports Third Quarter 2024 Financial Results

Materion Corporation Reports Third Quarter 2024 Financial Results MAYFIELD HEIGHTS, Ohio – October 30, 2024 - Materion Corporation (NYSE: MTRN) today reported third quarter 2024 financial results.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2024 MATERION CORPORAT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 1, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 28, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CO

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended June 28, 2024

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended June 28, 2024 Materion Natural Resources Inc.

Materion Corporation Reports Record Second Quarter 2024 Financial Results

Materion Corporation Reports Record Second Quarter 2024 Financial Results MAYFIELD HEIGHTS, Ohio - August 5, 2024 - Materion Corporation (NYSE: MTRN) today reported record second quarter 2024 financial results and updated 2024 earnings guidance.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 5, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

0. UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUA

0. UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPORATI

Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form

Exhibit 1.01 Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2023 to December 31, 2023 Overview This Conflict Minerals Report (this “Report”) of Materion Corporation (including its consolidated subsidiaries, “we”, “Materion” or the “Company”) has been prepared pursuant to Rule 13p-1 (the “Rules”) as promulgated under the Securities Exchange Act of 1934 for

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 6070 Parkland Blvd. Mayfield Heights, Ohio 44124 (Address of princ

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2024 MATERION CORPORATION (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Materion Corporation Reports First Quarter 2024 Financial Results

Materion Corporation Reports First Quarter 2024 Financial Results MAYFIELD HEIGHTS, Ohio - May 1, 2024 - Materion Corporation (NYSE: MTRN) today reported first quarter 2024 financial results and provided an update to 2024 earnings guidance.

Materion and Subsidiaries Management Incentive Plan for the 2024 Plan Year

Exhibit 10.1 MATERION and SUBSIDIARIES MANAGEMENT INCENTIVE PLAN FOR THE 2024 PLAN YEAR Summary Plan Document I. INTRODUCTION The Materion and Subsidiaries Management Incentive Plan for the 2024 Plan Year (the “Plan”), has been established by the Compensation Committee (the “Compensation Committee”), of the Company’s Board of Directors to provide incentive compensation to certain eligible employee

Form of 2024 Performance-Based Restricted Stock Unit Agreement

EXHIBIT 10.2 MATERION CORPORATION Performance-Based Restricted Stock Units Agreement WHEREAS, (the “Grantee”) is an employee of Materion Corporation, an Ohio corporation (the “Corporation”), or a Subsidiary; and WHEREAS the execution of an agreement in the form hereof (this “Agreement”) has been authorized by resolution of the Compensation Committee (the “Committee”) of the Board of Directors of t

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended March

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended March 29, 2024 Materion Natural Resources Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 29, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION C

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 28, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

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. )

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)

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of MATERION CORPORATION, an Ohio corporation (the “Corporation”), hereby constitutes and appoints Jugal K.

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of Registrant The Company has the following subsidiaries, all of which are wholly owned and included in the consolidated financial statements.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 15, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

Materion Corporation Compensation Clawback Policy, effective October 2, 2023

Exhibit 97 MATERION CORPORATION Compensation Clawback Policy Effective October 2, 2023 Purpose As required pursuant to the listing standards of the New York Stock Exchange (the “Stock Exchange”), Section 10D of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Rule 10D-1 under the Exchange Act, the Board of Directors (the “Board”) of Materion Corporation (the “Company”) has adopted this Compensation Clawback Policy (the “Policy”) to empower the Company to recover Covered Compensation (as defined below) erroneously awarded to a Covered Officer (as defined below) in the event of an Accounting Restatement (as defined below).

Materion Corporation Reports Strong Fourth Quarter and Record Full-Year 2023 Financial Results and Provides 2024 Outlook

Materion Corporation Reports Strong Fourth Quarter and Record Full-Year 2023 Financial Results and Provides 2024 Outlook MAYFIELD HEIGHTS, Ohio - February 15, 2024 - Materion Corporation (NYSE: MTRN) today reported fourth quarter and record full-year 2023 financial results, provided 2024 earnings guidance and shared an update on key strategic initiatives.

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Year Ended December 31, 2023.

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Year Ended December 31, 2023 Materion Natural Resources Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File Number 1-15885 MATERION CORPORAT

MTRN / Materion Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01419-materioncorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 13)* Name of issuer: Materion Corp Title of Class of Securities: Common Stock CUSIP Number: 576690101 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the ru

MTRN / Materion Corporation / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9 )* Materion Corp (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desig

MTRN / Materion Corporation / Capital Research Global Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Materion Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desi

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 19, 2024 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended September 29, 2023

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended September 29, 2023 Materion Natural Resources Inc.

Materion Corporation Reports Record Third Quarter 2023 Results

Materion Corporation Reports Record Third Quarter 2023 Results MAYFIELD HEIGHTS, Ohio - November 1, 2023 - Materion Corporation (NYSE: MTRN) today reported third quarter financial results and affirmed the midpoint of the 2023 earnings guidance.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 29, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERI

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 1, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 4, 2023 MATERION CORPORATIO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 4, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended June 30, 2023

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended June 30, 2023 Materion Natural Resources Inc.

Materion Corporation Reports Record Second Quarter Results and Affirms 2023 Outlook

Materion Corporation Reports Record Second Quarter Results and Affirms 2023 Outlook MAYFIELD HEIGHTS, Ohio - August 2, 2023 - Materion Corporation (NYSE: MTRN) today reported second quarter financial results and affirmed 2023 earnings guidance.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 2, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ¨ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPORATION

Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form

Exhibit 1.01 Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2022 to December 31, 2022 Overview This Conflict Minerals Report (this “Report”) of Materion Corporation (including its consolidated subsidiaries, “we”, “Materion” or the “Company”) has been prepared pursuant to Rule 13p-1 (the “Rules”) as promulgated under the Securities Exchange Act of 1934 for

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 6070 Parkland Blvd. Mayfield Heights, Ohio 44124 (Address of princ

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2023 MATERION CORPORATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commi

Form of 2023 Appreciation Rights Agreement under the Materion Corporation 2006 Stock Incentive Plan

Exhibit 10.4 MATERION CORPORATION Appreciation Rights Agreement WHEREAS, (the “Grantee”) is an employee of Materion Corporation (the “Corporation”) or a Subsidiary. WHEREAS, the execution of an agreement in the form hereof (this “Agreement”) has been authorized by a resolution of the Compensation Committee (the “Committee”) of the Board of Directors (the “Board”) of the Corporation that was duly a

Materion Corporation Reports Record First Quarter 2023 Results and Raises 2023 Outlook

Materion Corporation Reports Record First Quarter 2023 Results and Raises 2023 Outlook MAYFIELD HEIGHTS, Ohio - May 3, 2023 - Materion Corporation (NYSE: MTRN) today reported first quarter financial results, raised 2023 earnings guidance, and shared growth highlights.

Materion and Subsidiaries Management Incentive Plan for the 2023 Plan Year

Exhibit 10.1 MATERION and SUBSIDIARIES MANAGEMENT INCENTIVE PLAN FOR THE 2023 PLAN YEAR Summary Plan Document I. INTRODUCTION The Materion and Subsidiaries Management Incentive Plan for the 2023 Plan Year (the “Plan”), has been established by the Compensation Committee (the “Compensation Committee”), of the Company’s Board of Directors to provide incentive compensation to certain eligible employee

Form of 2023 Restricted Stock Unit Agreement (Stock-Settled)

Exhibit 10.3 MATERION CORPORATION Restricted Stock Units Agreement (Stock-Settled) WHEREAS, (the “Grantee”) is an employee of Materion Corporation, an Ohio corporation (the “Corporation”) or a Subsidiary; and WHEREAS, the execution of an agreement in the form hereof (this “Agreement”) has been authorized by a resolution of the Compensation Committee (the “Committee”) of the Board of Directors of t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2023 MATERION CORPORATION (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended March 31, 2023

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended March 31, 2023 Materion Natural Resources Inc.

Form of 2023 Performance-Based Restricted Stock Unit Agreement

EXHIBIT 10.2 MATERION CORPORATION Performance-Based Restricted Stock Units Agreement WHEREAS, (the “Grantee”) is an employee of Materion Corporation, an Ohio corporation (the “Corporation”), or a Subsidiary; and WHEREAS the execution of an agreement in the form hereof (this “Agreement”) has been authorized by resolution of the Compensation Committee (the “Committee”) of the Board of Directors of t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION C

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. )

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)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 22, 2023 MATERION CORPORATIO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 22, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

© 2023 Materion Corporation March 2023 Materion A Global Leader in Advanced Materials Solutions 1 Forward-Looking Statements and Non-GAAP Financial Information 2 These slides contain (and the accompanying oral discussion will contain, where applicabl

materioncorporationinves © 2023 Materion Corporation March 2023 Materion A Global Leader in Advanced Materials Solutions 1 Forward-Looking Statements and Non-GAAP Financial Information 2 These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

Amendment No. 1 dated as of January 13, 2023 to Fourth Amended and Restated Credit Agreement dated as of October 27, 2021, by and among Materion Corporation (the “Company”), Materion Netherlands B.V. (the “Dutch Borrower” and, together with the Company, the “Borrowers”), the financial institutions listed on the signature pages hereof and JPMorgan Chase Bank, N.A., as Administrative Agent (the “Administrative Agent”), under that certain Fourth Amended and Restated Credit Agreement dated as of October 27, 2021 by and among the Company, the Dutch Borrower, the other Foreign Subsidiary Borrowers from time to time party thereto

US-DOCS\137539355.5 EXECUTION COPY AMENDMENT NO. 1 Dated as of January 13, 2023 to FOURTH AMENDED AND RESTATED CREDIT AGREEMENT Dated as of October 27, 2021 THIS AMENDMENT NO. 1 (this “Amendment”) is made as of January 13, 2023 by and among Materion Corporation (the “Company”), Materion Netherlands B.V. (the “Dutch Borrower” and, together with the Company, the “Borrowers”), the financial instituti

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of Registrant The Company has the following subsidiaries, all of which are wholly owned and included in the consolidated financial statements.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 16, 2023 MATERION CORPORA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 16, 2023 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of MATERION CORPORATION, an Ohio corporation (the “Corporation”), hereby constitutes and appoints Jugal K.

Materion Corporation Reports Record Fourth Quarter and Full-Year 2022 Financial Results and Provides 2023 Outlook

Materion Corporation Reports Record Fourth Quarter and Full-Year 2022 Financial Results and Provides 2023 Outlook MAYFIELD HEIGHTS, Ohio - February 16, 2023 - Materion Corporation (NYSE: MTRN) today reported record fourth quarter and full-year 2022 financial results, provided 2023 earnings guidance, and shared an update on key strategic initiatives.

3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File Number 1-15885 MATERION CORPOR

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Year Ended December 31, 2022.

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Year Ended December 31, 2022 Materion Natural Resources Inc.

MTRN / Materion Corp / Capital Research Global Investors - SEC SCHEDULE 13G Passive Investment

SC 13G 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Materion Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designat

MTRN / Materion Corp / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8 )* Materion Corp (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desig

MTRN / Materion Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Materion Corp. Title of Class of Securities: Common Stock CUSIP Number: 576690101 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rul

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 2, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended September 30, 2022 Materion Natural Resources Inc.

Materion Corporation Reports Record Third Quarter Results and Updates Full Year 2022 Outlook

Materion Corporation Reports Record Third Quarter Results and Updates Full Year 2022 Outlook MAYFIELD HEIGHTS, Ohio – November 2, 2022 - Materion Corporation (NYSE: MTRN), a world leader in high performance advanced materials, today reported record third quarter financial results, updated 2022 earnings guidance and shared an update on key strategic initiatives.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERI

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 12, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Co

Metals Consignment Agreement, dated as of August 12, 2022

Exhibit 10.1 Execution Copy AMENDED AND RESTATED METALS CONSIGNMENT AGREEMENT Dated as of August 12, 2022 by and among BANK OF MONTREAL as the Metal Consignor and MATERION CORPORATION; MATERION ADVANCED MATERIALS TECHNOLOGIES AND SERVICES INC.; MATERION TECHNICAL MATERIALS INC.; MATERION BRUSH INC.; and MATERION ADVANCED MATERIALS TECHNOLOGIES AND SERVICES CORP.; as the Customers NAI-1529679909v8

Materion Corporation Reports Record Second Quarter Results and Affirms Full Year 2022 Outlook

Materion Corporation Reports Record Second Quarter Results and Affirms Full Year 2022 Outlook MAYFIELD HEIGHTS, Ohio - August 3, 2022 - Materion Corporation (NYSE: MTRN), a world leader in high performance advanced materials, today reported record second quarter financial results, affirmed 2022 earnings guidance and shared an update on key strategic initiatives.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended July 1, 2022 Materion Natural Resources Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 1, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION COR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ¨ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPORATION

Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2021 to December 31, 2021

Exhibit 1.01 Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2021 to December 31, 2021 Overview This Conflict Minerals Report (this ?Report?) of Materion Corporation (including its consolidated subsidiaries, ?we?, ?Materion? or the ?Company?) has been prepared pursuant to Rule 13p-1 (the ?Rules?) as promulgated under the Securities Exchange Act of 1934 for

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 6070 Parkland Blvd. Mayfield Heights, Ohio 44124 (Address of princ

May 10, 2022

MATERION CORPORATION 6070 Parkland Boulevard, Mayfield Heights, OH 44124 216.486.4200 f 216.383.4005 www.materion.com May 10, 2022 CORRESPONDENCE VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.C. 20549 Attn: Heather Clark Andrew Blume Re: Materion Corporation Form 10-K for the Year Ended December 31,

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 4, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 4, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 1, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CO

Form of 2022 Restricted Stock Unit Agreement (Stock-Settled)

Exhibit 10.3 MATERION CORPORATION Restricted Stock Units Agreement (Stock-Settled) WHEREAS, (the ?Grantee?) is an employee of Materion Corporation, an Ohio corporation (the ?Corporation?) or a Subsidiary; and WHEREAS, the execution of an agreement in the form hereof (this ?Agreement?) has been authorized by a resolution of the Compensation Committee (the ?Committee?) of the Board of Directors of t

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended April 1, 2022

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended April 1, 2022 Materion Natural Resources Inc.

Materion Corporation Reports Record Quarterly Results and Raises Full Year 2022 Outlook

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Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 28, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

Materion and Subsidiaries Management Incentive Plan for the 2022 Plan Year

Exhibit 10.1 MATERION and SUBSIDIARIES MANAGEMENT INCENTIVE PLAN FOR THE 2022 PLAN YEAR Summary Plan Document I. INTRODUCTION The Materion and Subsidiaries Management Incentive Plan for the 2022 Plan Year (the ?Plan?), has been established by the Compensation Committee (the ?Compensation Committee?), of the Company?s Board of Directors to provide incentive compensation to certain eligible employee

Form of 2022 Performance-Based Restricted Stock Unit Agreement

Exhibit 10.2 MATERION CORPORATION Performance-Based Restricted Stock Units Agreement WHEREAS, (the ?Grantee?) is an employee of Materion Corporation, an Ohio corporation (the ?Corporation?), or a Subsidiary; and WHEREAS the execution of an agreement in the form hereof (this ?Agreement?) has been authorized by resolution of the Compensation Committee (the ?Committee?) of the Board of Directors of t

Summary of Net Income, EBITDA, and Adjusted EBITDA

Summary of Net Income, EBITDA, and Adjusted EBITDA (Unaudited) Beginning with the first quarter of 2022, Materion Corporation (the ?Company?) began using earnings before interest, taxes, depreciation, depletion and amortization ("EBITDA") as the main operating income metric used by management to measure financial performance of the Company and each segment.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 21, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

April 7, 2022

April 7, 2022 CORRESPONDENCE VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.

March 30, 2022

March 30, 2022 CORRESPONDENCE VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.

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. )

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)

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Year Ended December 31, 202

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Year Ended December 31, 2021 Materion Natural Resources Inc.

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of Registrant The Company has the following subsidiaries, all of which are wholly owned and included in the consolidated financial statements.

Amendment No. 1, dated September 30, 2021, to Third Amended and Restated Credit Agreement, dated September 24, 2019, by and among Materion, Materion’s subsidiary, Materion Netherlands B.V., Materion’s other foreign subsidiaries party thereto from time to time, the financial institutions party thereto from time to time as lenders, JPMorgan Chase Bank, N.A., as administrative agent, Wells Fargo Bank National Association and Bank of America, N.A., as co-syndication agents, and KeyBank National Association, as documentation agent

US-DOCS\126403985.6 EXECUTION COPY AMENDMENT NO. 1 Dated as of September 30, 2021 to THIRD AMENDED AND RESTATED CREDIT AGREEMENT Dated as of September 24, 2019 THIS AMENDMENT NO. 1 (this ?Amendment?) is made as of September 30, 2021 by and among Materion Corporation (the ?Company?), Materion Netherlands B.V. (the ?Dutch Borrower? and, together with the Company, the ?Borrowers?), the financial inst

Materion Corporation Reports Record Fourth Quarter and Full-Year 2021 Financial Results and Provides 2022 Guidance

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Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 17, 2022 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of MATERION CORPORATION, an Ohio corporation (the ?Corporation?), hereby constitutes and appoints Jugal K.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File Number 1-15885 MATERION CORPORAT

Technical Report Summary on the Spor Mountain Mine

Technical Report Summary 2021 Spor Mountain Mine Delta, Utah Prepared for: Materion Natural Resources 6070 Parkland Blvd.

MTRN / Materion Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01393-materioncorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Materion Corp. Title of Class of Securities: Common Stock CUSIP Number: 576690101 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the r

MTRN / Materion Corp / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* Materion Corp (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

Unaudited Pro Forma Combined Financial Statements

Exhibit 99.3 Unaudited Pro Forma Combined Financial Statements The following unaudited pro forma combined financial statements reflect adjustments to the historical financial results of Materion Corporation (?Materion? or the ?Company?) in connection with the Transaction, as defined below. These unaudited pro forma combined financial statements adjust the historical financial statements to give ef

HCS-Electronic Materials (A Carve-Out Business of H.C. Starck Inc., USA) Combined Financial Statements Fiscal Year Ended December 31, 2020 Report of Independent Auditors 1 Combined Balance Sheet 2 Combined Statement of Operations 3 Combined Statement

Exhibit 99.1 HCS-Electronic Materials (A Carve-Out Business of H.C. Starck Inc., USA) Combined Financial Statements Fiscal Year Ended December 31, 2020 Contents Report of Independent Auditors 1 Combined Balance Sheet 2 Combined Statement of Operations 3 Combined Statement of Changes in Net Parent Investment 4 Combined Statement of Cash Flows 5 Notes to Combined Financial Statements 6 Report of Ind

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 27, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation

HCS-Electronic Materials (A Carve-Out Business of H.C. Starck Inc., USA) Interim Condensed Combined Unaudited Financial Statements For the Nine Months Ended September 30, 2021 Condensed Combined Unaudited Balance Sheet 2 Condensed Combined Unaudited

Exhibit 99.2 HCS-Electronic Materials (A Carve-Out Business of H.C. Starck Inc., USA) Interim Condensed Combined Unaudited Financial Statements For the Nine Months Ended September 30, 2021 Contents Condensed Combined Unaudited Balance Sheet 2 Condensed Combined Unaudited Statement of Operations 3 Condensed Combined Unaudited Statement of Changes in Net Parent Investment 4 Condensed Combined Unaudi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 1, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended October 1, 2021 Materion Natural Resources Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 2, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

MATERION CORPORATION REPORTS RECORD THIRD QUARTER FINANCIAL RESULTS AND RAISES FULL YEAR OUTLOOK

EX-99.1 2 q32021pressrelease.htm EX-99.1 MATERION CORPORATION REPORTS RECORD THIRD QUARTER FINANCIAL RESULTS AND RAISES FULL YEAR OUTLOOK MAYFIELD HEIGHTS, Ohio – November 2, 2021 - Materion Corporation (NYSE: MTRN), a world leader in high performing advanced materials, today reported record third quarter financial results and further raised its 2021 outlook. Third Quarter 2021 Highlights •Net sal

Fourth Amended and Restated Credit Agreement, by and among Materion Corporation, Materion Netherlands B.V., the other foreign borrowers party thereto from time to time, the financial institutions party thereto from time to time as lenders, JPMorgan Chase Bank, N.A., as administrative agent, Wells Fargo Bank, National Association and Bank of America, N.A., as co-syndication agents, KeyBank National Association, as documentation agent, and JPMorgan Chase Bank, N.A., Wells Fargo Securities, LLC and BofA Securities, Inc., as joint bookrunners and joint lead arrangers

Exhibit 10.1 EXECUTION COPY FOURTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of October 27, 2021 among MATERION CORPORATION MATERION NETHERLANDS B.V. The Other Foreign Subsidiary Borrowers Party Hereto The Lenders Party Hereto JPMORGAN CHASE BANK, N.A. as Administrative Agent WELLS FARGO BANK, NATIONAL ASSOCIATION and BANK OF AMERICA, N.A. as Co-Syndication Agents KEYBANK NATIONAL ASSOCIATION

1 November 1, 2021 MATERION COMPLETES ACQUISITION OF H.C. STARCK’S ELECTRONIC MATERIALS PORTFOLIO CREATING A GLOBAL LEADER IN PREMIUM THIN FILM MATERIALS FOR THE SEMICONDUCTOR MARKET MAYFIELD HEIGHTS, Ohio – November 1, 2021 - Materion Corporation (N

1 November 1, 2021 MATERION COMPLETES ACQUISITION OF H.C. STARCK?S ELECTRONIC MATERIALS PORTFOLIO CREATING A GLOBAL LEADER IN PREMIUM THIN FILM MATERIALS FOR THE SEMICONDUCTOR MARKET MAYFIELD HEIGHTS, Ohio ? November 1, 2021 - Materion Corporation (NYSE: MTRN), a world leader in high performing advanced materials, announced today that it has completed its previously announced acquisition of H.C. S

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 27, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 30, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization)

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 19, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization)

1 MATERION TO ACQUIRE H.C. STARCK’S ELECTRONIC MATERIALS PORTFOLIO, CREATING A GLOBAL LEADER IN PREMIUM THIN FILM MATERIALS FOR THE SEMICONDUCTOR MARKET • Acquiring industry-leading, premium electronic materials portfolio, significantly increasing ac

1 MATERION TO ACQUIRE H.C. STARCK?S ELECTRONIC MATERIALS PORTFOLIO, CREATING A GLOBAL LEADER IN PREMIUM THIN FILM MATERIALS FOR THE SEMICONDUCTOR MARKET ? Acquiring industry-leading, premium electronic materials portfolio, significantly increasing access to the high-growth semiconductor market ? Meaningfully increases scale and total addressable market in the semiconductor space, while providing g

Share Purchase Agreement, dated as of September 19, 2021, by and among Materion Corporation, HCST Hungary Holding Vagyonkezelő Korlátolt Felelősségű Társaság, H.C. Starck Group GmbH and Opus HoldCo S.à r.l.

SHARE PURCHASE AGREEMENT BY AND AMONG H.C. STARCK GROUP GMBH, HCST HUNGARY HOLDING VAGYONKEZEL? KORL?TOLT FELEL?SS?G? T?RSAS?G, OPUS HOLDCO S.? R.L. AND MATERION CORPORATION DATED AS OF SEPTEMBER 19, 2021 Exhibit 2.1 i TABLE OF CONTENTS PAGE ARTICLE 1 CERTAIN DEFINITIONS ....................................................................................................... 6 Section 1.1 Certain De

MATERION CORPORATION REPORTS STRONG SECOND QUARTER FINANCIAL RESULTS AND RAISES FULL YEAR OUTLOOK

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Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended July 2, 2021 Materion Natural Resources Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 2, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION COR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ¨ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPORATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 6070 Parkland Blvd. Mayfield Heights, Ohio 44124 (Address of princ

You’ve Exceeded the SEC’s Traffic Limit

Exhibit 1.01 Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2020 to December 31, 2020 Overview This Conflict Minerals Report (this ?Report?) of Materion Corporation (including its consolidated subsidiaries, ?we?, ?Materion? or the ?Company?) has been prepared pursuant to Rule 13p-1 (the ?Rule?) as promulgated under the Securities Exchange Act of 1934 for

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 6, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 29, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

MATERION CORPORATION Restricted Stock Units Agreement (Stock-Settled)

Exhibit 10.4 MATERION CORPORATION Restricted Stock Units Agreement (Stock-Settled) WHEREAS, (the ?Grantee?) is an employee of Materion Corporation, an Ohio corporation (the ?Corporation?) or a Subsidiary; and WHEREAS, the execution of an agreement in the form hereof (this ?Agreement?) has been authorized by a resolution of the Compensation Committee (the ?Committee?) of the Board of Directors of t

MATERION CORPORATION REPORTS STRONG FIRST QUARTER FINANCIAL RESULTS AND PROVIDES SECOND QUARTER AND FULL YEAR 2021 EARNINGS GUIDANCE

MATERION CORPORATION REPORTS STRONG FIRST QUARTER FINANCIAL RESULTS AND PROVIDES SECOND QUARTER AND FULL YEAR 2021 EARNINGS GUIDANCE MAYFIELD HEIGHTS, Ohio ? April 29, 2021 - Materion Corporation (NYSE: MTRN) today reported first quarter financial results and provided second quarter and full year 2021 earnings guidance.

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 2, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CO

Materion and Subsidiaries Management Incentive Plan for the 2021 Plan Year

Exhibit 10.1 MATERION and SUBSIDIARIES MANAGEMENT INCENTIVE PLAN FOR THE 2021 PLAN YEAR Summary Plan Document I. INTRODUCTION The Materion and Subsidiaries Management Incentive Plan for the 2021 Plan Year (the ?Plan?), has been established by the Compensation Committee (the ?Compensation Committee?), of the Company?s Board of Directors to provide incentive compensation to certain eligible employee

You’ve Exceeded the SEC’s Traffic Limit

U.S. Securities and Exchange Commission You’ve Exceeded the SEC’s Traffic Limit Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes. Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

EX-95 9 mtrn-ex952021q110q.htm EX-95 Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended April 2, 2021 Materion Natural Resources Inc., a wholly owned subsidiary, operates a beryllium mining complex in the State of Utah which is regulated by both the U.S. Mine Safety and Hea

You’ve Exceeded the SEC’s Traffic Limit

Exhibit 10.2 MATERION CORPORATION Performance-Based Restricted Stock Units Agreement WHEREAS, (the ?Grantee?) is an employee of Materion Corporation, an Ohio corporation (the ?Corporation?), or a Subsidiary; and WHEREAS, the execution of an agreement in the form hereof (this ?Agreement?) has been authorized by resolution of the Compensation Committee (the ?Committee?) of the Board of Directors of

- DEFA14A

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)

- DEF 14A

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)

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 2, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Comm

INVESTOR PRESENTATION March 2021 Exhibit 99.1 These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These st

EX-99.1 2 a2020q4irpresentation.htm EX-99.1 INVESTOR PRESENTATION March 2021 Exhibit 99.1 These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve known and unknown risks, uncertainties and other factors that could cause our actual resu

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of MATERION CORPORATION, an Ohio corporation (the ?Corporation?), hereby constitutes and appoints Jugal K.

LIFO Preferability Letter

EX-18.1 4 exhibit181.htm EX-18.1 Exhibit 18.1 February 18, 2021 Board of Directors Materion Corporation 6070 Parkland Blvd Mayfield Heights, Ohio 44124 Ladies and Gentlemen: Note A of the Notes to the consolidated financial statements of Materion Corporation included in its Annual Report on Form 10-K for the year ended December 31, 2020 describes a change in the method of accounting for inventory

CFO Offer Letter for Shelly M. Chadwick

MATERION CORPORATION 6070 Parkland Boulevard, Mayfield Heights, OH 44124 p 216.486.4200 f 216.383.4005 www.materion.com October 23, 2020 Shelly M. Chadwick 7566 Huntington Road Hudson, Ohio 44236 Dear Shelly, It is with great pleasure that I extend to you an offer of employment for the full-time position of Chief Financial Officer, reporting directly to me and based at our Mayfield Heights, Ohio h

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File Number 1-15885 MATERION CORPORAT

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Year Ended December 31, 2020.

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Year Ended December 31, 2020 Materion Natural Resources Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 18, 2021 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

MATERION CORPORATION REPORTS FOURTH QUARTER AND FULL-YEAR 2020 FINANCIAL RESULTS AND PROVIDES FIRST QUARTER 2021 EARNINGS GUIDANCE

EX-99.1 2 q4pressrelease.htm EX-99.1 MATERION CORPORATION REPORTS FOURTH QUARTER AND FULL-YEAR 2020 FINANCIAL RESULTS AND PROVIDES FIRST QUARTER 2021 EARNINGS GUIDANCE MAYFIELD HEIGHTS, Ohio – February 18, 2021 - Materion Corporation (NYSE: MTRN) today reported fourth quarter and full-year 2020 financial results, provided first quarter 2021 earnings guidance, and provided an update on key strategi

Severance Agreement for Shelly M. Chadwick

EX-10.11 2 exhibit1011severanceagreem.htm EX-10.11 Exhibit 10.11 SEVERANCE AGREEMENT THIS SEVERANCE AGREEMENT (this “Agreement”), dated as of December 15, 2020, is made and entered into by and between Materion Corporation, an Ohio corporation (the “Company”), and Shelly Chadwick (the “Executive”). WITNESSETH: WHEREAS, the Executive is an executive of the Company and is expected to make major contr

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of Registrant The Company has the following subsidiaries, all of which are wholly owned and included in the consolidated financial statements.

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Materion Corp (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Materion Corp. Title of Class of Securities: Common Stock CUSIP Number: 576690101 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rul

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 28, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Regulation FD Disclosure, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Exhibit 99.1 INVESTOR PRESENTATION October 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation

EX-99.1 2 a2020q3irpresentation.htm EX-99.1 Exhibit 99.1 INVESTOR PRESENTATION October 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve known and unknown risks, uncertainties and other factors tha

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 25, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION

Materion Corporation and Subsidiaries Consolidated Statements of Income Third Quarter Ended Nine Months Ended (In thousands except per share amounts) September 25, 2020 September 27, 2019 September 25, 2020 September 27, 2019 Net sales $ 287,171 $ 30

NEWS RELEASE MAYFIELD HEIGHTS, Ohio – October 22, 2020 - Materion Corporation (NYSE: MTRN) today reported third quarter 2020 financial results and provided an update on key strategic initiatives.

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended September 25, 2020 Materion Natural Resources Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 22, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Exhibit 99.1 INVESTOR PRESENTATION July 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Re

july2020irpresentation Exhibit 99.1 INVESTOR PRESENTATION July 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve known and unknown risks, uncertainties and other factors that could cause our actual

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Comm

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 23, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Comm

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 26, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPO

Form of 2020 Non-Employee Directors Restricted Stock Unit Agreement

exhibit101q22020 EXHIBIT 10.1 MATERION CORPORATION Non-Employee Directors’ Restricted Stock Units Agreement WHEREAS, (the “Director”) is a member of the Board of Directors (the “Board”) of Materion Corporation, an Ohio corporation (the “Company”), and is not an employee of the Company; and WHEREAS, the execution of an agreement in the form hereof (this “Agreement”) has been authorized by a resolut

MATERION CORPORATION REPORTS SECOND QUARTER 2020 FINANCIAL RESULTS

EX-99.1 2 q2pressrelease.htm EX-99.1 NEWS RELEASE MATERION CORPORATION REPORTS SECOND QUARTER 2020 FINANCIAL RESULTS MAYFIELD HEIGHTS, Ohio – July 23, 2020 - Materion Corporation (NYSE: MTRN) today reported second quarter 2020 financial results and provided an update on key strategic initiatives. •Net sales were $271.5 million; value-added sales increased 2% sequentially to $161.6 million •Net inc

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended June 26, 2020 Materion Natural Resources Inc.

Exhibit 99.1 MATERION COMPLETES OPTICS BALZERS ACQUISITION MAYFIELD HEIGHTS, Ohio – July 20, 2020 – Materion Corporation announced today that it has completed the previously announced acquisition of Optics Balzers AG. The combination of Materion and

EX-99.1 2 a2020materionpressreleas.htm EXHIBIT 99.1 Exhibit 99.1 MATERION COMPLETES OPTICS BALZERS ACQUISITION MAYFIELD HEIGHTS, Ohio – July 20, 2020 – Materion Corporation announced today that it has completed the previously announced acquisition of Optics Balzers AG. The combination of Materion and Optics Balzers creates a premier optical thin film coating solutions provider with a highly comple

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 20, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Comm

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 1, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commi

- 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 11-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORPORATION

Exhibit 99.1 NEWS RELEASE MATERION CORPORATION TO ACQUIRE OPTICS BALZERS COMBINATION CREATES A GLOBAL LEADER IN OPTICAL THIN FILM COATINGS MAYFIELD HEIGHTS, Ohio, June 8, 2020 -- Materion Corporation (NYSE:MTRN) today announced it has entered into a

EX-99.1 2 finalpressreleaseob.htm EXHIBIT 99.1 Exhibit 99.1 NEWS RELEASE MATERION CORPORATION TO ACQUIRE OPTICS BALZERS COMBINATION CREATES A GLOBAL LEADER IN OPTICAL THIN FILM COATINGS MAYFIELD HEIGHTS, Ohio, June 8, 2020 - Materion Corporation (NYSE:MTRN) today announced it has entered into a definitive agreement to acquire Optics Balzers, AG, an industry leader in thin film optical coatings. Tr

Exhibit 99.2 Optics Balzers Acquisition Creates a Global Leader in Optical Thin Film Coatings June 8, 2020 Forward-Looking Statements Disclaimer These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looki

exhibit992investorpresen Exhibit 99.2 Optics Balzers Acquisition Creates a Global Leader in Optical Thin Film Coatings June 8, 2020 Forward-Looking Statements Disclaimer These slides contain (and the accompanying oral discussion will contain, where applicable) “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve known and

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 8, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commi

Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2019 to December 31, 2019

Exhibit 1.01 Conflict Minerals Report of Materion Corporation for the Reporting Period from January 1, 2019 to December 31, 2019 Overview This Conflict Minerals Report (this “Report”) of Materion Corporation (including its consolidated subsidiaries, “we”, “Materion” or the “Company”) has been prepared pursuant to Rule 13p-1 (the “Rule”) as promulgated under the Securities Exchange Act of 1934 for

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 6070 Parkland Blvd. Mayfield Heights, Ohio 44124 (Address of princ

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 13, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commi

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Commis

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 30, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

Exhibit 99.1 INVESTOR PRESENTATION April 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward- looking statements” within the meaning of the Private Securities Litigation

a2020q1irpresentation Exhibit 99.1 INVESTOR PRESENTATION April 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward- looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve known and unknown risks, uncertainties and other factors that could cause the actua

Form of 2020 Performance-Based Restricted Stock Units Agreement

a151012209132019prsuform Exhibit 10.2 MATERION CORPORATION Performance-Based Restricted Stock Units Agreement WHEREAS, (the “Grantee”) is an employee of Materion Corporation, an Ohio corporation (the “Corporation”), or a Subsidiary; and WHEREAS, the execution of an agreement in the form hereof (this “Agreement”) has been authorized by resolution of the Compensation Committee (the “Committee”) of t

Form of 2020 Restricted Stock Unit Agreement (Stock-Settled)

a151012199322019rsuformo Exhibit 10.4 MATERION CORPORATION Restricted Stock Units Agreement (Stock-Settled) WHEREAS, (the “Grantee”) is an employee of Materion Corporation, an Ohio corporation (the “Corporation”) or a Subsidiary; and WHEREAS, the execution of an agreement in the form hereof (this “Agreement”) has been authorized by a resolution of the Compensation Committee (the “Committee”) of th

MATERION CORPORATION REPORTS FIRST QUARTER 2020 FINANCIAL RESULTS

NEWS RELEASE MATERION CORPORATION REPORTS FIRST QUARTER 2020 FINANCIAL RESULTS MAYFIELD HEIGHTS, Ohio - April 23, 2020 - Materion Corporation (NYSE:MTRN) today reported first quarter 2020 financial results and progress on key strategic initiatives.

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended March 27, 2020

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended March 27, 2020 Materion Natural Resources Inc.

Form of 2020 Appreciation Rights Agreement under the Materion Corporation 2006 Stock Incentive Plan

EX-10.3 4 a151012211922019sarformo.htm EXHIBIT 10.3 Exhibit 10.3 MATERION CORPORATION Appreciation Rights Agreement WHEREAS, (the “Grantee”) is an employee of Materion Corporation (the “Corporation”) or a Subsidiary. WHEREAS, the execution of an agreement in the form hereof (this “Agreement”) has been authorized by a resolution of the Compensation Committee (the “Committee”) of the Board of Direct

Materion and Subsidiaries Management Incentive Plan for the 2020 Plan Year

a2020mipplandocfor10q EXHIBIT 10.1 MATERION and SUBSIDIARIES MANAGEMENT INCENTIVE PLAN FOR THE 2020 PLAN YEAR Summary Plan Document I. INTRODUCTION The Materion and Subsidiaries Management Incentive Plan for the 2020 Plan Year (the “Plan”), has been established by the Compensation Committee (the “Compensation Committee”), of the Company’s Board of Directors to provide incentive compensation to cer

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 23, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Com

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 27, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION CORP

MTRN / Materion Corp. DEFA14A - - DEFA14A

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)

MTRN / Materion Corp. DEF 14A - - DEF 14A

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)

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 14, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

INVESTOR PRESENTATION February 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward- looking statements” within the meaning of the Private Securities Litigation Reform Act

a2019q4irpresentation INVESTOR PRESENTATION February 2020 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward- looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

2019 Management Incentive Plan

a2019mipplandocumentfina MATERION and SUBSIDIARIES MANAGEMENT INCENTIVE PLAN FOR THE 2019 PLAN YEAR Summary Plan Document I.

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File Number 1-15885 MATERION CORPORAT

MATERION CORPORATION REPORTS FULL-YEAR AND FOURTH QUARTER 2019 FINANCIAL RESULTS AND PROVIDES 2020 EARNINGS GUIDANCE

EX-99.1 2 a21320q4pressrelease.htm EXHIBIT 99.1 NEWS RELEASE MATERION CORPORATION REPORTS FULL-YEAR AND FOURTH QUARTER 2019 FINANCIAL RESULTS AND PROVIDES 2020 EARNINGS GUIDANCE MAYFIELD HEIGHTS, Ohio - February 13, 2020 - Materion Corporation (NYSE:MTRN) today reported full-year and fourth quarter 2019 financial results, provided 2020 earnings guidance, and announced the date of the Annual Meetin

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of Registrant The Company has the following subsidiaries, all of which are wholly owned and included in the consolidated financial statements.

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Year Ended December 31, 2019

EX-95 10 mtrn-ex9520191231.htm EXHIBIT 95 Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Year Ended December 31, 2019 Materion Natural Resources Inc., a wholly owned subsidiary, operates a beryllium mining complex in the State of Utah which is regulated by both the U.S. Mine Safety and Heal

Powers of Attorney

Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and officers of MATERION CORPORATION, an Ohio corporation (the “Corporation”), hereby constitutes and appoints Jugal K.

Description of Materion Corporation Common Stock

exhibit41descriptionofco Exhibit 4.1 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description is a general summary of the terms of the common shares, no par value, of Materion Corporation, an Ohio corporation (the “Company”). The description below does not include all of the terms of the common shares and should be read together with th

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 13, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

MTRN / Materion Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* MATERION CORP (Name of Issuer) Common Stock (Title of Class of Securities) 576690101 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

MTRN / Materion Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Materion Corp Title of Class of Securities: Common Stock CUSIP Number: 576690101 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 4, 2020 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 15, 2019 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 31, 2019 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

INVESTOR PRESENTATION November 2019 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward- looking statements” within the meaning of the Private Securities Litigation Reform Act

a2019q3irpresentationvf1 INVESTOR PRESENTATION November 2019 Forward-looking Statements These slides contain (and the accompanying oral discussion will contain, where applicable) “forward- looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 24, 2019 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (C

MATERION CORPORATION REPORTS RECORD THIRD QUARTER 2019 FINANCIAL RESULTS, NARROWS FULL-YEAR EARNINGS GUIDANCE, AND DECLARES FOURTH QUARTER DIVIDEND

NEWS RELEASE MATERION CORPORATION REPORTS RECORD THIRD QUARTER 2019 FINANCIAL RESULTS, NARROWS FULL-YEAR EARNINGS GUIDANCE, AND DECLARES FOURTH QUARTER DIVIDEND MAYFIELD HEIGHTS, Ohio - October 24, 2019 - Materion Corporation (NYSE:MTRN) today reported third quarter 2019 financial results.

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 27, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-15885 MATERION

Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended September 27, 2019

Exhibit 95 Materion Corporation Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the Fiscal Quarter Ended September 27, 2019 Materion Natural Resources Inc.

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 24, 2019 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization)

Third Amended and Restated Credit Agreement, dated September 24, 2019, by and among Materion Corporation, Materion Netherlands B.V., the other foreign borrowers from time to time party thereto, the financial institutions from time to time party thereto as lenders, JPMorgan Chase Bank, N.A. as administrative agent, Wells Fargo Bank, National Association and Bank of America, N.A., as co-syndication agents, and KeyBank National Association, as documentation agent

a15091703101thirdamended Exhibit 10.1 EXECUTION COPY THIRD AMENDED AND RESTATED CREDIT AGREEMENT dated as of September 24, 2019 among MATERION CORPORATION MATERION NETHERLANDS B.V. The Other Foreign Subsidiary Borrowers Party Hereto The Lenders Party Hereto JPMORGAN CHASE BANK, N.A. as Administrative Agent WELLS FARGO BANK, NATIONAL ASSOCIATION and BANK OF AMERICA, N.A. as Co-Syndication Agents KE

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 27, 2019 MATERION CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-15885 34-1919973 (State or other jurisdiction of incorporation or organization) (Co

Metals Consignment Agreement, dated as of August 27, 2019

bmomaterionmetalsconsign Exhibit 10.1 Execution Version METALS CONSIGNMENT AGREEMENT Dated as of August 27, 2019 by and among BANK OF MONTREAL as the Metal Lender and MATERION CORPORATION; MATERION ADVANCED MATERIALS TECHNOLOGIES AND SERVICES INC.; MATERION TECHNICAL MATERIALS INC.; MATERION BRUSH INC.; MATERION LARGE AREA COATINGS LLC; and MATERION ADVANCED MATERIALS TECHNOLOGIES AND SERVICES COR