MATERION CORP

Ticker: MTRN CUSIP: 576690101 Class: EQTY

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2022

Shares 216,396 Value ($000) $18,937 Avg Close $81.64 Range $64.89 - $89.26

Q3 2022

Shares 207,446 Value ($000) $16,596 Avg Close $82.42 Range $69.36 - $97.89

Q2 2022

Shares 51,026 Value ($000) $3,762 Avg Close $80.32 Range $68.75 - $89.68

Q1 2022

Shares 22,379 Value ($000) $1,918 Avg Close $85.47 Range $78.88 - $96.00

Q4 2021

Shares 12,079 Value ($000) $1,111 Avg Close $83.35 Range $68.09 - $95.60

Q3 2021

Shares 12,900 Value ($000) $885 Avg Close $71.56 Range $66.92 - $76.97

Q2 2021

Shares 12,900 Value ($000) $972 Avg Close $74.12 Range $64.48 - $80.39

Q3 2018

Shares 6,881 Value ($000) $416 Avg Close $60.17 Range $53.70 - $65.10

Q2 2018

Shares 6,881 Value ($000) $373 Avg Close $54.29 Range $49.40 - $57.45

Q1 2018

Shares 6,881 Value ($000) $351 Avg Close $51.05 Range $44.95 - $55.35

Q4 2017

Shares 6,881 Value ($000) $335 Avg Close $47.56 Range $42.10 - $52.10

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2022	216,396	$18,937	$81.64	$64.89 - $89.26
Q3 2022	207,446	$16,596	$82.42	$69.36 - $97.89
Q2 2022	51,026	$3,762	$80.32	$68.75 - $89.68
Q1 2022	22,379	$1,918	$85.47	$78.88 - $96.00
Q4 2021	12,079	$1,111	$83.35	$68.09 - $95.60
Q3 2021	12,900	$885	$71.56	$66.92 - $76.97
Q2 2021	12,900	$972	$74.12	$64.48 - $80.39
Q3 2018	6,881	$416	$60.17	$53.70 - $65.10
Q2 2018	6,881	$373	$54.29	$49.40 - $57.45
Q1 2018	6,881	$351	$51.05	$44.95 - $55.35
Q4 2017	6,881	$335	$47.56	$42.10 - $52.10