Gregory R. Chemnitz - 01 Mar 2023 Form 4 Insider Report for MATERION Corp (MTRN)

Role: VP General Counsel & Secretary
Signature: /s/Michelle R Mekinda, as Attorney-in-Fact
Issuer symbol: MTRN
Transactions as of: 01 Mar 2023
Net transactions value: -$24,129
Form type: 4
Filing time: 03 Mar 2023, 10:55:44 UTC
Previous filing: 27 Feb 2023
Next filing: 14 Mar 2023
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	+738	+3.9%	$0.000000	19,521	01 Mar 2023	Direct
transaction	MTRN	Common Stock	Tax liability	$24,129	-213	-1.1%	$113.28	19,308	01 Mar 2023	Direct
holding	MTRN	Common Stock						5,265	01 Mar 2023	Held in 401(k) Plan

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 Unit	Options Exercise	$0	-738	-13%	$0.000000	4,743	01 Mar 2023	Common Stock	738		Direct	F1, F2, F3

* 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	The restricted stock units granted on 03/01/2022 vest in three equal annual installments.
F3	Expiration Date is the same as the Date Exercisable.