Shelly Marie Chadwick - 23 Feb 2026 Form 4 Insider Report for MATERION Corp (MTRN)

Role: Vice President, Finance & CFO
Signature: /s/Michelle R. Mekinda, as Attorney-In-Fact
Issuer symbol: MTRN
Transactions as of: 23 Feb 2026
Net transactions value: -$1,311,637
Form type: 4
Filing time: 25 Feb 2026, 15:07:24 UTC
Previous filing: 20 Feb 2026
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chadwick Shelly Marie	Vice President, Finance & CFO	6070 PARKLAND BLVD., MAYFIELD HTS.	/s/Michelle R. Mekinda, as Attorney-In-Fact	25 Feb 2026	0001688289

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MTRN	Common Stock	Sale	$576,490	-3,975	-16%	$145.03	21,140	23 Feb 2026	Direct	F1
transaction	MTRN	Common Stock	Sale	$735,147	-5,001	-24%	$147.00	16,139	23 Feb 2026	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $144.960 to 145.500, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Content

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $144.960 to 145.500, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.