[144] MATERION Corp SEC Filing

Rhea-AI Filing Summary

Mohan N. Reddy reported proposed dispositions of Common Stock under Form 144 with multiple sale dates in May–June 2026. The filing lists sale entries of 2,006 shares on 05/08/2026, 10,000 shares on 06/02/2026, 4,303 shares on 06/03/2026, and 646 shares on 06/04/2026. Brokerage information shows Fidelity Brokerage Services LLC and an entry dated 06/05/2026.

Key Figures

Sale - 05/08/2026: 2,006 shares Sale - 06/02/2026: 10,000 shares Sale - 06/03/2026: 4,303 shares +3 more

6 metrics

Sale - 05/08/2026 2,006 shares sale date 05/08/2026 with $400,253.47 shown

Sale - 06/02/2026 10,000 shares sale date 06/02/2026 with $2,303,091.09 shown

Sale - 06/03/2026 4,303 shares sale date 06/03/2026 with $989,702.96 shown

Sale - 06/04/2026 646 shares sale date 06/04/2026 with $148,580.00 shown

Broker entry date 06/05/2026 Fidelity Brokerage Services LLC entry associated with Common stock

Form type Form 144 Notice of proposed sale by an affiliate

Key Terms

Form 144, Deferred Compensation, Issuer

3 terms

Form 144 regulatory

"reported proposed dispositions of Common Stock under Form 144"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Deferred Compensation financial

"Common | 06/01/2026 | Deferred Compensation | Issuer"

Deferred compensation is pay that employees or executives have earned now but will receive at a later date, such as delayed bonuses, retirement benefits, or stock grants. It matters to investors because it creates future obligations and shapes incentives—like a promise to pay later that can affect a company’s reported profits, cash needs and potential stock dilution—so it helps signal how a business manages costs and retains key people.

Issuer financial

"Deferred Compensation | Issuer | 6818 | 06/01/2026"

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	6818	1568140.00	20801485	06/05/2026	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	06/01/2026	Deferred Compensation	Issuer			6818	06/01/2026	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
Mohan N. Reddy 6070 Parkland Blvd. Mayfield Heights OH 44124	Common	05/08/2026	2006	400253.47
Mohan N. Reddy 6070 Parkland Blvd. Mayfield Heights OH 44124	Common	06/02/2026	10000	2303091.09
Mohan N. Reddy 6070 Parkland Blvd. Mayfield Heights OH 44124	Common	06/03/2026	4303	989702.96
Mohan N. Reddy 6070 Parkland Blvd. Mayfield Heights OH 44124	Common	06/04/2026	646	148580.00

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What transactions does the MTRN Form 144 show for Mohan N. Reddy?

The filing shows proposed dispositions totaling multiple entries: 2,006 shares (05/08/2026), 10,000 shares (06/02/2026), 4,303 shares (06/03/2026), and 646 shares (06/04/2026). The filing lists broker details with Fidelity.

Which broker is listed on the MTRN Form 144?

The form lists Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield, RI. The filing associates the brokerage entry with the Common stock transactions and includes a date of 06/05/2026.

Are dollar amounts provided for the shares on the MTRN Form 144?

Yes, the filing includes dollar figures next to each sale entry such as $400,253.47 for the 2,006 shares and $2,303,091.09 for the 10,000-share entry, presented alongside the respective sale dates.

Does the MTRN Form 144 indicate the transaction type or source of shares?

The filing lists one entry labeled Deferred Compensation and marks Issuer as the related party for that line. Other sale entries are reported as proposed dispositions by the reporting person.