MATERION CORP

Ticker: MTRN CUSIP: 576690101 Class: EQTY

Cornerstone Management, Inc.'s Holding History (CIK: 0001587867)

Note: Option positions (PUT/CALL) are excluded.

Q1 2023

Shares 18 Value ($000) $2 Avg Close $100.24 Range $84.23 - $118.20

Q4 2022

Shares 18 Value ($000) $2 Avg Close $81.64 Range $64.89 - $89.26

Q3 2022

Shares 18 Value ($000) $1 Avg Close $82.42 Range $69.36 - $97.89

Q2 2022

Shares 18 Value ($000) $1 Avg Close $80.32 Range $68.75 - $89.68

Q1 2022

Shares 18 Value ($000) $2 Avg Close $85.47 Range $78.88 - $96.00

Q4 2021

Shares 18 Value ($000) $2 Avg Close $83.35 Range $68.09 - $95.60

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	18	$2	$100.24	$84.23 - $118.20
Q4 2022	18	$2	$81.64	$64.89 - $89.26
Q3 2022	18	$1	$82.42	$69.36 - $97.89
Q2 2022	18	$1	$80.32	$68.75 - $89.68
Q1 2022	18	$2	$85.47	$78.88 - $96.00
Q4 2021	18	$2	$83.35	$68.09 - $95.60