Materion plans sale of 3,705 common shares

Materion Corporation plans to sell 3,705 shares of its common stock through Fidelity Brokerage Services LLC on the NYSE, with an approximate sale date of August 7, 2026.

Accepted by SEC EDGAR 08/07/2026 - 03:38 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Materion Corporation plans to sell 3,705 shares of its common stock through Fidelity Brokerage Services LLC on the NYSE, with an approximate sale date of August 7, 2026. The shares have an aggregate market value of $1,082,690.50, compared with 20,833,725 common shares outstanding. The seller previously acquired restricted stock through compensation-related vesting events in 2023, 2024, and 2025.

Key Figures

Shares to be sold: 3,705 shares Aggregate market value: $1,082,690.50 Shares outstanding: 20,833,725 shares +4 more

7 metrics

Shares to be sold 3,705 shares Common stock proposed for sale through Fidelity Brokerage Services LLC

Aggregate market value $1,082,690.50 Value of 3,705 common shares proposed for sale

Shares outstanding 20,833,725 shares Common shares outstanding, for comparison to planned sale size

Approximate sale date 08/07/2026 Planned date for sale of common shares on the NYSE

Restricted stock vesting 2023 1,398 shares Restricted stock vesting on 05/05/2023 as compensation

Restricted stock vesting 2024 1,152 shares Restricted stock vesting on 05/09/2024 as compensation

Restricted stock vesting 2025 1,155 shares Restricted stock vesting on 05/07/2025 as compensation

Key Terms

Restricted Stock Vesting, aggregate market value, compensation

3 terms

Restricted Stock Vesting financial

"Common | 05/05/2023 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

aggregate market value financial

"3705 | 1082690.50 | 20833725 | 08/07/2026 | NYSE"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

compensation financial

"1398 | 05/05/2023 | Compensation Common"

FAQ

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

What does Materion (MTRN) disclose about shares it plans to sell?

Materion discloses a planned sale of 3,705 common shares through Fidelity Brokerage Services LLC on the NYSE, with an aggregate market value of $1,082,690.50 and an approximate sale date of August 7, 2026.

How many Materion (MTRN) shares are outstanding compared with those to be sold?

Materion reports 20,833,725 common shares outstanding, while the planned sale covers 3,705 shares. This gives context for the relative size of the proposed transaction versus the company’s total common shares outstanding.

What is the value of the Materion (MTRN) shares planned for sale?

The filing lists an aggregate market value of $1,082,690.50 for the 3,705 common shares to be sold. This figure reflects the market value used for the notice related to the planned NYSE sale through Fidelity Brokerage Services LLC.

When were the Materion (MTRN) shares to be sold originally acquired?

The shares relate to restricted stock that vested as compensation on May 5, 2023 (1,398 shares), May 9, 2024 (1,152 shares), and May 7, 2025 (1,155 shares). These vesting events are listed as sources of the securities.

Which broker and market are involved in the planned Materion (MTRN) share sale?

The proposed transaction will be executed through Fidelity Brokerage Services LLC, located in Smithfield, Rhode Island, with the shares to be traded on the NYSE. This identifies both the intermediary and the marketplace for the sale.

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	0001526849
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	Solomon Darlene J. S.
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	Director

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	3705	1082690.50	20833725	08/07/2026	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	05/05/2023	Restricted Stock Vesting	Issuer			1398	05/05/2023	Compensation
Common	05/09/2024	Restricted Stock Vesting	Issuer			1152	05/09/2024	Compensation
Common	05/07/2025	Restricted Stock Vesting	Issuer			1155	05/07/2025	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/07/2026
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/ Tyler Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Darlene J. Solomon
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)