Gregory R. Chemnitz

CIK: 0001519910

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)13 (30.2%)

Position reduction

Option Exercises (M)7 (16.3%)

Derivative conversions

Awards (A)16 (37.2%)

Compensation grants

Other (G, F, J, C, D, …)7 (16.3%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MTRN

MATERION Corp

Officer

Discretionary Trading P&L

Holdings

Transaction History (43 total)

MTRN
MATERION Corp
Sep 4, 2026
Award(A)
Restricted Stock Units
Direct
2 shares-
MTRN
MATERION Corp
Jun 12, 2026
Award(A)
Restricted Stock Units
Direct
2 shares-
MTRN
MATERION Corp
Mar 9, 2026
Tax Payment(F)
Direct
5 shares at avg. $144.19$720.95
MTRN
MATERION Corp
Mar 6, 2026
Award(A)
Direct
5 shares-
MTRN
MATERION Corp
Mar 3, 2026
Sale(S)
Direct
3.4K shares at avg. $157.26$540K
MTRN
MATERION Corp
Mar 3, 2026
Sale(S)
Direct
1.1K shares at avg. $157.51$171K
MTRN
MATERION Corp
Mar 3, 2026
Exercise(M)
Direct
1.5K shares at avg. $135.58$199K
MTRN
MATERION Corp
Mar 3, 2026
Tax Payment(F)
Direct
4.4K shares at avg. $157.26$699K
MTRN
MATERION Corp
Mar 3, 2026
Exercise(M)
Direct
1K shares at avg. $87.36$89K
MTRN
MATERION Corp
Mar 3, 2026
Exercise(M)
Direct
3K shares at avg. $113.28$344K
MTRN
MATERION Corp
Mar 2, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $166.59$202K
MTRN
MATERION Corp
Mar 1, 2026
Award(A)
Stock Appreciation Rights
Direct
2.3K shares-
MTRN
MATERION Corp
Mar 1, 2026
Exercise(M)
Direct
2K shares-
MTRN
MATERION Corp
Mar 1, 2026
Award(A)
Restricted Stock Units
Direct
1.5K shares-
MTRN
MATERION Corp
Feb 17, 2026
Sale(S)
Direct
4K shares at avg. $157.09$628K
MTRN
MATERION Corp
Feb 12, 2026
Award(A)
Direct
2.2K shares-
MTRN
MATERION Corp
Jan 31, 2026
Award(A)
Restricted Stock Units
Direct
98 shares-
MTRN
MATERION Corp
Dec 5, 2025
Award(A)
Restricted Stock Units
Direct
4 shares-
MTRN
MATERION Corp
Nov 4, 2025
Exercise(M)
Direct
1.5K shares at avg. $68.82$100K
MTRN
MATERION Corp
Nov 4, 2025
Tax Payment(F)
Direct
1.1K shares at avg. $112.96$119K
MTRN
MATERION Corp
Nov 4, 2025
Exercise(M)
Direct
2.3K shares at avg. $80.85$182K
MTRN
MATERION Corp
Nov 4, 2025
Tax Payment(F)
Direct
1.8K shares at avg. $113.13$203K
MTRN
MATERION Corp
Nov 4, 2025
Sale(S)
Direct
864 shares at avg. $113.23$98K
MTRN
MATERION Corp
Sep 5, 2025
Award(A)
Restricted Stock Units
Direct
5 shares-
MTRN
MATERION Corp
Aug 4, 2025
Sale(S)
Direct
918 shares at avg. $104.65$96K

		Type	Shares	Price		Ownership
Sep 4, 2026	MTRN MATERION Corp	Award(A) Restricted Stock Units	2	-	-	Direct
Jun 12, 2026	MTRN MATERION Corp	Award(A) Restricted Stock Units	2	-	-	Direct
Mar 9, 2026	MTRN MATERION Corp	Tax Payment(F)	5	$144.19	$721	Direct
Mar 6, 2026	MTRN MATERION Corp	Award(A)	5	-	$0	Direct
Mar 3, 2026	MTRN MATERION Corp	Sale(S)	3,434	$157.26	$540,031	Direct
Mar 3, 2026	MTRN MATERION Corp	Sale(S)	1,083	$157.51	$170,589	Direct
Mar 3, 2026	MTRN MATERION Corp	Exercise(M)	1,471	$135.58	$199,438	Direct
Mar 3, 2026	MTRN MATERION Corp	Tax Payment(F)	4,445	$157.26	$699,021	Direct
Mar 3, 2026	MTRN MATERION Corp	Exercise(M)	1,017	$87.36	$88,845	Direct
Mar 3, 2026	MTRN MATERION Corp	Exercise(M)	3,040	$113.28	$344,371	Direct
Mar 2, 2026	MTRN MATERION Corp	Tax Payment(F)	1,211	$166.59	$201,740	Direct
Mar 1, 2026	MTRN MATERION Corp	Award(A) Stock Appreciation Rights	2,265	-	-	Direct
Mar 1, 2026	MTRN MATERION Corp	Exercise(M)	2,003	-	$0	Direct
Mar 1, 2026	MTRN MATERION Corp	Award(A) Restricted Stock Units	1,479	-	-	Direct
Feb 17, 2026	MTRN MATERION Corp	Sale(S)	4,000	$157.09	$628,360	Direct
Feb 12, 2026	MTRN MATERION Corp	Award(A)	2,196	-	$0	Direct
Jan 31, 2026	MTRN MATERION Corp	Award(A) Restricted Stock Units	98	-	-	Direct
Dec 5, 2025	MTRN MATERION Corp	Award(A) Restricted Stock Units	4	-	-	Direct
Nov 4, 2025	MTRN MATERION Corp	Exercise(M)	1,459	$68.82	$100,408	Direct
Nov 4, 2025	MTRN MATERION Corp	Tax Payment(F)	1,053	$112.96	$118,947	Direct
Nov 4, 2025	MTRN MATERION Corp	Exercise(M)	2,254	$80.85	$182,236	Direct
Nov 4, 2025	MTRN MATERION Corp	Tax Payment(F)	1,796	$113.13	$203,181	Direct
Nov 4, 2025	MTRN MATERION Corp	Sale(S)	864	$113.23	$97,827	Direct
Sep 5, 2025	MTRN MATERION Corp	Award(A) Restricted Stock Units	5	-	-	Direct
Aug 4, 2025	MTRN MATERION Corp	Sale(S)	918	$104.65	$96,067	Direct

1-25 of 43 transactions

About Chemnitz Gregory R.

Chemnitz Gregory R. (SEC CIK 0001519910) files insider reports with the SEC as VP General Counsel & Secretary of MATERION Corp (MTRN).

Signal8 holds 20 ownership filings by Chemnitz Gregory R., all Form 4s, filed between Sep 10, 2024 and Sep 9, 2026. Those filings report 43 transactions, from Sep 6, 2024 to Sep 4, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Chemnitz Gregory R.'s filings is in MAYFIELD HEIGHTS, OH.

Recent filings by Chemnitz Gregory R.

Sep 4, 2026: Grant or award of MTRN derivative securities (Form 4, code A).
Jun 12, 2026: Grant or award of MTRN derivative securities (Form 4, code A).
Mar 9, 2026: Tax withholding of MTRN shares (Form 4, code F).
Mar 6, 2026: Grant or award of MTRN shares (Form 4, code A).
Mar 3, 2026: Open-market sales of MTRN shares (2 lines, Form 4, code S).

Other insiders filing for MATERION Corp (MTRN)

SHULAR CRAIG S, Director
Prevost Patrick M., Director
LIGGETT EMILY M, Director
KHILNANI VINOD M, Director
Chadwick Shelly Marie, Vice President, Finance & CFO
Fashinpaur Melissa A, Chief Accounting Officer

How to read Form 4 transaction codes