Gregory R. Chemnitz - 01 Mar 2026 Form 4 Insider Report for MATERION Corp (MTRN)

Reporting relationship: VP General Counsel & Secretary
Issuer ticker: MTRN
Reported as of: 01 Mar 2026
Net transaction value: -$978,726
SEC form: 4
Accepted by SEC: 03 Mar 2026, 19:16:41 UTC
Prior SEC filing: 19 Feb 2026
Next SEC filing: 10 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/Michelle R. Mekinda, as Attorney-In-Fact

Key filing fact

Gregory R. Chemnitz filed Form 4 for MATERION Corp (MTRN) on 03 Mar 2026.

Key facts

This page summarizes Gregory R. Chemnitz's Form 4 filing for MATERION Corp (MTRN).
14 reported transactions and 6 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 19:16.

Change

Previous filing in this sequence was filed on 19 Feb 2026.
Current net transaction value: -$978,726.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001519910 Primary reporting owner

Chemnitz Gregory R.

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MTRN transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +2,003
Change %: +23%
Price: $0.000000
Shares after: 10,575
Date: 01 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Tax liability

Transaction value: $201,740
Shares: -1,211
Change %: -11%
Price: $166.59
Shares after: 9,364
Date: 02 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Options Exercise

Transaction value: $344,371
Shares: +3,040
Change %: +32%
Price: $113.28
Shares after: 12,404
Date: 03 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Options Exercise

Transaction value: $199,438
Shares: +1,471
Change %: +12%
Price: $135.58
Shares after: 13,875
Date: 03 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Options Exercise

Transaction value: $88,845
Shares: +1,017
Change %: +7.3%
Price: $87.36
Shares after: 14,892
Date: 03 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Tax liability

Transaction value: $699,021
Shares: -4,445
Change %: -30%
Price: $157.26
Shares after: 10,447
Date: 03 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Sale

Transaction value: $170,589
Shares: -1,083
Change %: -10%
Price: $157.52
Shares after: 9,364
Date: 03 Mar 2026
Ownership: Direct

MTRN transaction

Common Stock

Sale

Transaction value: $540,031
Shares: -3,434
Change %: -37%
Price: $157.26
Shares after: 5,930
Date: 03 Mar 2026
Ownership: Direct

MTRN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,343
Date: 01 Mar 2026
Ownership: Held in 401(k) Plan

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MTRN transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -2,003
Change %: -49%
Price: $0.000000
Shares after: 2,060
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,003
Exercise price
Footnotes: F1, F2, F3

MTRN transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +1,479
Change %: +72%
Price: $0.000000
Shares after: 3,539
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,479
Exercise price
Footnotes: F1, F3, F4

MTRN transaction Derivative

Stock Appreciation Rights

Award

Transaction value: $0
Shares: +2,265
Change %
Price: $0.000000
Shares after: 2,265
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,265
Exercise price: $166.59
Footnotes: F5

MTRN transaction Derivative

Stock Appreciation Rights

Options Exercise

Transaction value: $0
Shares: -3,040
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 03 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,040
Exercise price: $113.28
Footnotes: F6

MTRN transaction Derivative

Stock Appreciation Rights

Options Exercise

Transaction value: $0
Shares: -1,471
Change %: -67%
Price: $0.000000
Shares after: 736
Date: 03 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,471
Exercise price: $135.58
Footnotes: F7

MTRN transaction Derivative

Stock Appreciation Rights

Options Exercise

Transaction value: $0
Shares: -1,017
Change %: -33%
Price: $0.000000
Shares after: 2,034
Date: 03 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,017
Exercise price: $87.36
Footnotes: F8

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

Each restricted stock unit represents a right to receive one share of MTRN common stock.

Footnote 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.

Footnote F3

Expiration Date is the same as the Date Exercisable.

Footnote F4

These restricted stock units vest in three equal annual installments beginning March 1, 2027.

Footnote F5

The Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027.

Footnote F6

The Stock Appreciation Rights vested in three equal annual installments beginning March 1, 2024.

Footnote F7

These Stock Appreciation Rights vest in three equal installments beginning March 1, 2025.

Footnote F8

These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2026.