Other Information
−Removed: During the quarter ended September 26, 2025, no director or officer (as defined in Rule 16a-1(f) under the Exchange Act) of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as each term is defined in Item 408 of Regulation S-K).
+Added: During the quarter ended April 3, 2026, no director or officer (as defined in Rule 16a-1(f) under the Exchange Act) of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as each term is defined in Item 408 of Regulation S-K).
All documents referenced below were filed pursuant to the Exchange Act by Materion Corporation, file number 001-15885, unless otherwise noted.
4.1 Amendment No.
−Removed: 2 to Amended and Restated Metals Consignment Agreement, dated as of August 20, 2025 (filed as Exhibit 10.1 to the Company's 8-K filed on August 21, 2025), incorporated herein by reference.
−Removed: 10.2 Form of 2025 Restricted Stock Units Agreement (Stock-Settled) under the Materion Corporation 2025 Equity and Incentive Compensation Plan, covering grants made in 2025 *
+Added: 1 dated as of June 26, 2025 to 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*
+Added: 10.1 Materion and Subsidiaries Annual Incentive Plan for the 2026 Plan Year*
+Added: 10.2 Form of 2026 Performance-Based Restricted Stock Unit Agreement under the Materion Corporation 2025 Equity and Incentive Compensation Plan, covering grants made in 2026*
+Added: 10.3 Form of 2026 Appreciation Rights Agreement under the Materion Corporation 2025 Equity and Incentive Compensation Plan, covering grants made in 2026*
+Added: 10.4 Form of 2026 Restricted Stock Unit Agreement under the Materion Corporation 2025 Equity and Incentive Compensation Plan, covering grants made in 2026*
31.1 Certification of Chief Executive Officer required by Rule 13a-14(a) or 15d-14(a)*
2 unchanged sentences
Section 1350*
−Removed: 95 Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended September 26, 2025 *
+Added: 95 Mine Safety Disclosure Pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act for the period ended April 3, 2026 *
101.INS XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document*
8 unchanged sentences
MATERION CORPORATION
−Removed: October 30, 2025
+Added: April 29, 2026
/s/ Shelly M.
Vice President, Finance and Chief Financial Officer
−Removed: (Principal Financial Officer)
+Added: (Principal Financial and Accounting Officer)
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.