[Form 4] Materion Corporation Insider Trading Activity

Rhea-AI Filing Summary

Chadwick Shelly Marie, Vice President, Finance & CFO of Materion Corporation (MTRN), reported an internal equity award transaction dated 09/05/2025. She acquired 18 restricted stock units (RSUs) valued at $0 as the result of reinvested dividend equivalents; each RSU converts to one share of common stock and will vest on the same schedule as the related awards. Following this transaction, she beneficially owns 14,310 shares of MTRN common stock on a direct basis. The Form 4 was signed on behalf of the reporting person by an attorney-in-fact on 09/09/2025.

Insights

Financial Analyst

TL;DR: A routine insider equity accrual—18 RSUs added via dividend reinvestment increases direct holdings to 14,310 shares; immaterial to valuation.

The disclosed transaction is a non-cash acquisition of 18 RSUs from dividend-equivalent reinvestment, exercisable/expiring on the vesting date of the underlying awards. The small size (18 shares) relative to total holdings indicates no material change to insider ownership or control. This is consistent with standard executive compensation mechanics and does not signal a novel corporate action or material shift in insider alignment.

Corporate Governance Expert

TL;DR: Properly reported Form 4 for an officer; disclosure shows routine compensation mechanics and timely filing via attorney-in-fact.

The filing documents an officer-level recipient and records requisite details: acquisition date, nature of award (RSUs), conversion ratio (1:1 to common stock), and post-transaction beneficial ownership. The transaction was reported within standard practice and signed by an attorney-in-fact, which is acceptable when so authorized. No governance red flags or departures are evident from the form's content.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chadwick Shelly Marie

(Last) (First) (Middle)

6070 PARKLAND BLVD.

(Street)

MAYFIELD HTS. OH 44124

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MATERION Corp [ MTRN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Vice President, Finance & CFO

3. Date of Earliest Transaction (Month/Day/Year)
09/05/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	09/05/2025		A		18		(2)	(3)	Common Stock	18	$0	14,310	D

Explanation of Responses:

1. Each restricted stock unit represents a right to receive one share of MTRN common stock.

2. These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

3. Expiration Date is the same as the Date Exercisable.

Remarks:

	/s/Michelle R. Mekinda, as Attorney-In-Fact	09/09/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did MTRN insider Chadwick Shelly Marie report on Form 4?

She reported acquiring 18 restricted stock units (RSUs) on 09/05/2025 through reinvestment of dividend equivalents.

How many MTRN shares does Chadwick Shelly Marie beneficially own after the transaction?

She beneficially owns 14,310 shares of Materion common stock on a direct basis following the reported transaction.

Did the Form 4 disclose any cash purchase price for the RSUs?

No. The form shows a $0 price for the RSUs, indicating they were awarded via dividend-equivalent reinvestment rather than a cash purchase.

When was the Form 4 signed and who signed it?

The form was signed on behalf of the reporting person by Michelle R. Mekinda, as Attorney-In-Fact on 09/09/2025.

Do the RSUs have a separate exercisability or expiration date listed?

The filing states the date exercisable equals the expiration date and that the RSUs will vest on the same schedule as the related awards; no separate calendar dates are provided in the form.