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Signature
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/s/Michelle R. Mekinda, as Attorney-In-Fact
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Issuer symbol
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MTRN
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Transactions as of
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01 Mar 2026
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Net transactions value
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-$1,057,593
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Form type
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4
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Filing time
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03 Mar 2026, 19:16:46 UTC
Reporting Owners (1)
| Name |
Relationship |
Address |
Signature |
Signature date |
CIK |
| Chadwick Shelly Marie |
Vice President, Finance & CFO |
6070 PARKLAND BLVD., MAYFIELD HTS. |
/s/Michelle R. Mekinda, as Attorney-In-Fact |
03 Mar 2026 |
0001688289 |
Transactions Table
| Type |
Sym |
Class |
Transaction |
Value $ |
Shares |
Change % |
* Price $ |
Shares After |
Date |
Ownership |
Footnotes |
| transaction |
MTRN |
Common Stock |
Options Exercise |
$0 |
+5,552 |
+34% |
$0.000000 |
21,691 |
01 Mar 2026 |
Direct |
|
| transaction |
MTRN |
Common Stock |
Tax liability |
$651,200 |
-3,909 |
-18% |
$166.59 |
17,782 |
02 Mar 2026 |
Direct |
|
| transaction |
MTRN |
Common Stock |
Sale |
$163,393 |
-1,039 |
-5.8% |
$157.26 |
16,743 |
03 Mar 2026 |
Direct |
F1 |
| transaction |
MTRN |
Common Stock |
Sale |
$243,000 |
-1,500 |
-9% |
$162.00 |
15,243 |
03 Mar 2026 |
Direct |
|
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 |
-5,552 |
-38% |
$0.000000 |
8,886 |
01 Mar 2026 |
Common Stock |
5,552 |
|
Direct |
F2, F3, F4 |
| transaction |
MTRN |
Restricted Stock Units |
Award |
$0 |
+3,590 |
+40% |
$0.000000 |
12,476 |
01 Mar 2026 |
Common Stock |
3,590 |
|
Direct |
F2, F4, F5 |
| transaction |
MTRN |
Stock Appreciation Rights |
Award |
$0 |
+5,498 |
|
$0.000000 |
5,498 |
01 Mar 2026 |
Common Stock |
5,498 |
$166.59 |
Direct |
F6 |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
Explanation of Responses: