Materion (MTRN) legal chief sells 4,000 shares at $157.09

Rhea-AI Filing Summary

MATERION Corp executive Gregory R. Chemnitz, VP General Counsel & Secretary, reported an open-market sale of 4,000 shares of common stock at $157.09 per share. After this sale, he directly holds 8,572 shares, and an additional 5,343.175 shares are held indirectly in a 401(k) plan.

Insider Trade Summary

Net Seller: 4,000 shares

Net Sell 2 txns

Insider Chemnitz Gregory R.

Role VP General Counsel & Secretary

Sold 4,000 shs ($628K)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,000	$157.09	$628K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,572 shares (Direct); Common Stock — 5,343.175 shares (Indirect, Held in 401(k) Plan)

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 02/19/2026 - 07:42 PM Learn about SEC filing dates

FAQ

What insider transaction did MTRN executive Gregory Chemnitz report?

Gregory R. Chemnitz reported selling 4,000 shares of MATERION Corp common stock in an open-market transaction at $157.09 per share. The filing shows this as a non-derivative sale coded “S” on February 17, 2026.

How many MTRN shares does Gregory Chemnitz hold after this Form 4?

After the sale, Gregory Chemnitz directly holds 8,572 shares of MATERION Corp common stock. The filing also shows 5,343.175 additional shares held indirectly through a 401(k) plan, reported as indirect ownership.

Was the MTRN insider transaction a buy or a sell?

The insider transaction was a sell. Gregory Chemnitz executed an open-market sale of 4,000 MATERION Corp common shares, identified with transaction code “S” and described as a sale in an open market or private transaction.

What price did the MTRN insider receive per share in the sale?

The reported sale price was $157.09 per share. This price applies to the 4,000 MATERION Corp common shares sold in the open-market transaction disclosed in the Form 4 filed for Gregory Chemnitz.

Does the MTRN Form 4 show any indirect holdings for Gregory Chemnitz?

Yes. Besides his direct holdings, the Form 4 reports 5,343.175 MATERION Corp shares held indirectly in a 401(k) plan. These are classified as indirect ownership, separate from his directly held 8,572 shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Chemnitz Gregory R.

(Last) (First) (Middle)

6070 PARKLAND BLVD.

(Street)

MAYFIELD HEIGHTS OH 44124

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MATERION Corp [ MTRN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP General Counsel & Secretary

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/17/2026		S		4,000	D	$157.09	8,572	D
Common Stock								5,343.175	I	Held in 401(k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/Michelle R. Mekinda, as Attorney-In-Fact	02/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.