Gregory R. Chemnitz - 22 Feb 2022 Form 4/A - Amendment 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: 22 Feb 2022
Net transactions value: $0
Form type: 4/A - Amendment
Filing time: 25 Mar 2022, 15:45:03 UTC
Date Of Original Report: 24 Feb 2022
Previous filing: 23 Feb 2022
Next filing: 02 Mar 2022
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	+3,799	+21%	$0.000000	21,895	22 Feb 2022	Direct	F1

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	-3,799	-31%	$0.000000	8,517	22 Feb 2022	Common Stock	3,799		Direct	F2, F3, F4

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

Explanation of Responses:

Id	Content
F1	This amendment is being filed solely to report the exempt vesting of restricted stock units (no rows from the original Form 4 are repeated in this amendment).
F2	Each restricted stock unit represents a right to receive one share of MTRN common stock.
F3	The restricted stock units are subject to a three year vesting period.
F4	Expiration Date is the same as the Date Exercisable.