Gregory R. Chemnitz - 01 Mar 2026 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 2026
Net transactions value
-$978,726
Form type
4
Filing time
03 Mar 2026, 19:16:41 UTC
Previous filing
19 Feb 2026
Next filing
10 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chemnitz Gregory R. VP General Counsel & Secretary 6070 PARKLAND BLVD., MAYFIELD HEIGHTS /s/Michelle R. Mekinda, as Attorney-In-Fact 03 Mar 2026 0001519910

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MTRN Common Stock Options Exercise $0 +2,003 +23% $0.000000 10,575 01 Mar 2026 Direct
transaction MTRN Common Stock Tax liability $201,740 -1,211 -11% $166.59 9,364 02 Mar 2026 Direct
transaction MTRN Common Stock Options Exercise $344,371 +3,040 +32% $113.28 12,404 03 Mar 2026 Direct
transaction MTRN Common Stock Options Exercise $199,438 +1,471 +12% $135.58 13,875 03 Mar 2026 Direct
transaction MTRN Common Stock Options Exercise $88,845 +1,017 +7.3% $87.36 14,892 03 Mar 2026 Direct
transaction MTRN Common Stock Tax liability $699,021 -4,445 -30% $157.26 10,447 03 Mar 2026 Direct
transaction MTRN Common Stock Sale $170,589 -1,083 -10% $157.52 9,364 03 Mar 2026 Direct
transaction MTRN Common Stock Sale $540,031 -3,434 -37% $157.26 5,930 03 Mar 2026 Direct
holding MTRN Common Stock 5,343 01 Mar 2026 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 Units Options Exercise $0 -2,003 -49% $0.000000 2,060 01 Mar 2026 Common Stock 2,003 Direct F1, F2, F3
transaction MTRN Restricted Stock Units Award $0 +1,479 +72% $0.000000 3,539 01 Mar 2026 Common Stock 1,479 Direct F1, F3, F4
transaction MTRN Stock Appreciation Rights Award $0 +2,265 $0.000000 2,265 01 Mar 2026 Common Stock 2,265 $166.59 Direct F5
transaction MTRN Stock Appreciation Rights Options Exercise $0 -3,040 -100% $0.000000 0 03 Mar 2026 Common Stock 3,040 $113.28 Direct F6
transaction MTRN Stock Appreciation Rights Options Exercise $0 -1,471 -67% $0.000000 736 03 Mar 2026 Common Stock 1,471 $135.58 Direct F7
transaction MTRN Stock Appreciation Rights Options Exercise $0 -1,017 -33% $0.000000 2,034 03 Mar 2026 Common Stock 1,017 $87.36 Direct F8
* 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 These restricted stock units granted on 03/01/2023, 03/01/2024, and 03/01/2025, and any related dividend equivalents, vest in three equal annual installments.
F3 Expiration Date is the same as the Date Exercisable.
F4 These restricted stock units vest in three equal annual installments beginning March 1, 2027.
F5 The Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027.
F6 The Stock Appreciation Rights vested in three equal annual installments beginning March 1, 2024.
F7 These Stock Appreciation Rights vest in three equal installments beginning March 1, 2025.
F8 These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2026.