MATERION Corp — Director's Dealing 2026

Mar 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MATERION Corp (MTRN)
CIK: 0001104657
Period of Report: 2026-03-01

Reporting Person: Chadwick Shelly Marie (Vice President, Finance & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-03-01	Common Stock	M	5552	—	Acquired	21691	Direct
2026-03-02	Common Stock	F	3909	$166.59	Disposed	17782	Direct
2026-03-03	Common Stock	S	1039	$157.26	Disposed	16743	Direct
2026-03-03	Common Stock	S	1500	$162	Disposed	15243	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-03-01	Restricted Stock Units	$	M	5552	Disposed		Common Stock (5552)	Direct
2026-03-01	Restricted Stock Units	$	A	3590	Acquired		Common Stock (3590)	Direct
2026-03-01	Stock Appreciation Rights	$166.59	A	5498	Acquired	2033-03-01	Common Stock (5498)	Direct

Footnotes

F1: The reported sale of 1,039 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.

F2: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F3: These restricted stock units granted on 03/01/2023, 03/01/2024, and 03/01/2025, and any related dividend equivalents, vest in three equal annual installments.

F4: Expiration Date is the same as the Date Exercisable.

F5: These restricted stock units vest in three equal annual installments beginning March 1, 2027.

F6: These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027.