MTRN insider sells 433 shares for $68,019.97

MTRN: Gregory R. Chemnitz reported the sale of 433 common shares on 02/17/2026 for $68,019.97.

Accepted by SEC EDGAR 03/03/2026 - 11:17 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

MTRN: Gregory R. Chemnitz reported the sale of 433 common shares on 02/17/2026 for $68,019.97.

The filing also lists securities tied to issuer compensation vesting: 446 restricted shares vesting on 03/01/2025, 2,988 restricted shares vesting on 03/01/2026, and 1,083 stock appreciation rights on 03/03/2026.

Insights

Securities Compliance Counsel

Form 144 reports a director/insider sale and lists upcoming issuer vesting events.

The filing documents a reported disposal of $68,019.97 tied to 433 common shares sold on 02/17/2026. It also itemizes issuer-held compensation instruments with specified vesting dates.

These entries are routine regulatory disclosures reflecting a reported sale and scheduled vesting; timing and further sales will depend on holder actions and applicable resale conditions.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did MTRN insider Gregory R. Chemnitz report on Form 144?

He reported a sale of 433 common shares on 02/17/2026 for $68,019.97. The filing also lists issuer compensation vesting of 446, 2,988 restricted shares and 1,083 SARs with specific vesting dates.

Which securities and vesting dates are listed in the MTRN excerpt?

The excerpt lists 446 restricted shares vesting 03/01/2025, 2,988 restricted shares vesting 03/01/2026, and 1,083 SARs dated 03/03/2026. Each is labeled as issuer compensation.

How much cash proceeds were reported for the insider sale on MTRN Form 144?

The reported proceeds for the sale were $68,019.97 associated with the sale of 433 common shares on 02/17/2026. The filing pairs the share count with the aggregate sale amount.

Does the filing state who will receive proceeds from future vesting shares?

The excerpt labels the listed instruments as issuer compensation and ties them to vesting dates; it does not specify the recipient of future proceeds beyond the named reporting person and issuer context.

Is the Form 144 filing on MTRN indicative of planned additional sales?

The filing shows securities eligible upon vesting (restricted shares and SARs) but does not state any definite planned sales; future sale activity would depend on holder decisions and applicable resale rules.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001519910
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MATERION Corp
SEC File Number	001-15885
Address of Issuer	6070 PARKLAND BLVD. MAYFIELD HTS. OHIO 44124
Phone	2163834931
Name of Person for Whose Account the Securities are To Be Sold	Chemnitz Gregory R.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	4517	710619.59	20736213	03/03/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/01/2025	Restricted Stock Vesting	Issuer			446	03/01/2025	Compensation
Common	03/01/2026	Restricted Stock Vesting	Issuer			2988	03/01/2026	Compensation
Common	03/03/2026	SAR	Issuer			1083	03/03/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Gregory R. Chemnitz 6070 Parkland Blvd. Mayfield Heights OH 44124	Common	02/17/2026	433	68019.97

144: Remarks and Signature

Remarks
Date of Notice	03/03/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Gregory Chemnitz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)