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~~October 2029, 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)			(Commission File Number)			(I.R.S. Employer Identification No.)

6070 Parkland Blvd., Mayfield Hts., Ohio 44124


(Address of principal executive offices)						(Zip Code)

Registrant's telephone number, including area code (216) 486-4200

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class			Trading Symbol(s)			Name of each exchange on which registered

Common Stock, no par value MTRN New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§204.12b-2 of this chapter).

Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act ☐

Item 12.0102 ~~Entry~~Results ~~into~~of aOperations ~~Material~~and ~~Definitive~~Financial ~~Agreement~~Condition.

On ~~August~~October 2029, 2025, Materion Corporation ~~(the~~issued ~~“Company”)~~a ~~and~~press ~~certain~~release ofannouncing its ~~subsidiaries~~results ~~entered~~for ~~into an amendment (~~the ~~“Amendment”)~~third toquarter ~~their Amended and Restated Precious Metals Consignment Agreement governing their U.S. consignment facility (the “Consignment Facility”) with Bank~~ of ~~Montreal (“BMO”). Among other things, the Amendment extends the maturity date of the Consignment Facility from August 31,~~ 2025 ~~to August 31, 2028~~. The ~~Consignment~~press ~~Facility~~release is ~~the~~attached ~~Company’s~~hereto ~~largest~~as ~~precious~~Exhibit ~~metals consignment facility~~99.1, ~~with~~which ais ~~consignment~~incorporated ~~limit~~herein ofby ~~$150~~reference.~~0 million.~~

The Amendment is filed as Exhibit 10.1 to this Current Report on Form 8-K. The foregoing description of the Amendment is qualified in its entirety by reference to the full text of the Amendment, which is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

Exhibits.

Exhibit Number						Description of Exhibit
10.1*						Amendment No. 2 to Amended and Restated Metals Consignment Agreement, dated as of August 20, 2025
99.1						Materion Corporation press release, dated October 29, 2025
104						Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Portions of this exhibit have been omitted, which portions will be furnished to the Securities and Exchange Commission upon request.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		Materion Corporation
August 21, 2025	By:	/s/ Melissa A. Fashinpaur
October 29, 2025	By:	/s/ Melissa A. Fashinpaur
		Melissa A. Fashinpaur
		Chief Accounting Officer

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