MATERION CORP

Ticker: MTRN CUSIP: 576690101 Class: EQTY

Harvey Partners, LLC's Holding History (CIK: 0001406484)

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

Q4 2025

Shares 319,500 Value ($000) $39,720 Avg Close $123.31 Range $109.61 - $135.33

Q3 2025

Shares 318,000 Value ($000) $38,418 Avg Close $105.00 Range $78.40 - $122.73

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	319,500	$39,720	$123.31	$109.61 - $135.33
Q3 2025	318,000	$38,418	$105.00	$78.40 - $122.73