Shelly Marie Chadwick - 01 Mar 2025 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: 01 Mar 2025
Net transactions value: -$161,878
Form type: 4
Filing time: 04 Mar 2025, 17:52:26 UTC
Previous filing: 18 Feb 2025
Next filing: 06 Mar 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MTRN	Common Stock	Options Exercise	$0	+3,345	+19%	$0.000000	20,914	01 Mar 2025	Direct
transaction	MTRN	Common Stock	Tax liability	$161,878	-1,853	-8.9%	$87.36	19,061	03 Mar 2025	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MTRN	Restricted Stock Units	Options Exercise	$0	-3,345	-39%	$0.000000	5,148	01 Mar 2025	Common Stock	3,345		Direct	F1, F2, F3
transaction	MTRN	Restricted Stock Units	Award	$0	+4,417	+86%	$0.000000	9,565	01 Mar 2025	Common Stock	4,417		Direct	F1, F3, F4
transaction	MTRN	Stock Appreciation Rights	Award	$0	+6,517		$0.000000	6,517	01 Mar 2025	Common Stock	6,517	$87.36	Direct	F5

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a right to receive one share of MTRN common stock.
F2	These restricted stock units granted on 03/01/2022, 03/01/2023, and 03/01/2024, and any related dividend equivalents, vest in three equal annual installments.
F3	Expiration Date is the same as the Date Exercisable.
F4	The restricted stock units vest in three equal annual installments beginning March 1, 2026.
F5	These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2026.