[144] Materion Corporation SEC Filing

Rhea-AI Filing Summary

Materion Corporation (MTRN) – Form 144 filing. An unidentified insider has notified intent to sell 1,140 common shares through Fidelity Brokerage Services at an aggregate market value of $120,091.30. The planned trade date is 08 Aug 2025. The shares represent roughly 0.0055% of the company’s 20,726,917 shares outstanding and were acquired via two restricted-stock vesting events on 01 Mar 2025 (276 sh) and 01 Aug 2025 (864 sh). No prior sales were reported in the past three months. The filer certifies no undisclosed material adverse information. Because of the small size relative to float and absence of additional context, the transaction appears routine and is unlikely to affect trading dynamics.

Positive

• None.

Negative

• Insider intends to sell shares, which can sometimes be perceived negatively, although the amount is immaterial.

Insights

Financial Analyst

TL;DR: Routine insider sale of 1,140 shares worth $120k; immaterial to MTRN valuation.

The Form 144 discloses a prospective sale amounting to 0.0055% of outstanding shares, sourced from recent restricted-stock vesting. Such filings are common for executives managing tax obligations. With no indication of concurrent negative developments and given Materion’s ~$2 bn market cap, the impact on liquidity, ownership structure, or signal value is negligible. I classify the news as neutral, noteworthy only for disclosure compliance.

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	1140	120091.30	20726917	08/04/2025	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			276	03/01/2025	Compensation
Common	08/01/2025	Restricted Stock Vesting	Issuer			864	08/01/2025	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

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

How many Materion (MTRN) shares are being sold?

The Form 144 covers 1,140 common shares.

What is the total market value of the planned sale?

The aggregate value is $120,091.30 based on the filing.

When is the anticipated sale date for the shares?

The filer lists an approximate sale date of 08/04/2025.

What percentage of Materion’s outstanding shares does this sale represent?

Roughly 0.0055% of the 20,726,917 shares outstanding.

How were the shares acquired by the insider?

They were obtained via restricted-stock vesting on 03/01/2025 and 08/01/2025.

Were any shares sold by this insider in the past three months?

The filing reports "Nothing to Report" for prior three-month sales.