MTRN Form 144: Insider sale of 8,976 shares reported

MTRN insider sale notice and proposed sale related to restricted stock vesting.

Accepted by SEC EDGAR 03/03/2026 - 01:17 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

MTRN insider sale notice and proposed sale related to restricted stock vesting. The filing lists a proposed sale entry for Common stock tied to Restricted Stock Vesting with a trade/notice date of 03/01/2026. It also records a reported sale by Shelly Chadwick of 8,976 shares on 02/23/2026 for $1,311,638.33.

Insights

Insider Compliance Specialist

Forms show a vesting-triggered sale notice and a reported insider disposition.

The entry lists a proposed sale related to Restricted Stock Vesting with a date of 03/01/2026, indicating securities eligible for sale following vesting. The filing separately records a reported sale of 8,976 shares by Shelly Chadwick on 02/23/2026 for $1,311,638.33.

Timing and method details beyond these dates are not provided in the excerpt; subsequent brokerage or Form 4/5 disclosures may clarify settlement, any holding-period rules, or the plan permitting the sale.

FAQ

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

What did MTRN's Form 144 disclose about insider transactions?

The filing discloses a proposed sale tied to Restricted Stock Vesting dated 03/01/2026 and a reported sale of 8,976 shares on 02/23/2026 for $1,311,638.33. The excerpt does not detail settlement or sale method.

Who reported the sale in the MTRN Form 144 filing?

The reported disposition is by Shelly Chadwick, showing a sale of 8,976 shares on 02/23/2026 for $1,311,638.33. The excerpt also lists Fidelity Brokerage Services LLC as a broker reference.

Does the Form 144 indicate why the shares were sold?

The filing links a proposed sale to Restricted Stock Vesting with a date of 03/01/2026. The documented sale by Shelly Chadwick appears separate and the excerpt does not state additional motives or conditions.

Are proceeds and transaction dates provided in the filing for MTRN?

Yes. The excerpt shows proceeds of $1,311,638.33 for the sale of 8,976 shares on 02/23/2026, and a proposed vesting-related sale dated 03/01/2026. No settlement timing is shown.

Does the Form 144 entry indicate who receives the cash from the sale?

The excerpt records the sale and proceeds amount but does not specify the recipient of cash proceeds. It names the reporting person and a broker but does not state cash-flow recipients in the provided text.

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	0001688289
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	Chadwick Shelly Marie
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	1039	163393.14	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	03/01/2026	Restricted Stock Vesting	Issuer			1039	03/01/2026	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
Shelly Chadwick 6070 Parkland Blvd Mayfield Heights OH 44124	Common	02/23/2026	8976	1311638.33

144: Remarks and Signature

Remarks
Date of Notice	03/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/30/2025
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 Shelly Chadwick
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)