Materion Corp (MTRN) Chief Accounting Officer reports 2 new RSUs in Form 4

Rhea-AI Filing Summary

MATERION Corp reported a small equity grant to one of its senior executives. On 12/05/2025, the company’s Chief Accounting Officer received 2 restricted stock units (RSUs) of MATERION common stock at a price of $0 per unit. These RSUs were acquired through the reinvestment of dividend equivalents, meaning cash dividends attributable to existing RSUs were converted into additional units rather than paid in cash.

The newly issued RSUs will vest at the same time as the original RSUs to which they relate, so they follow the same schedule rather than creating a new vesting timeline. After this transaction, the officer directly beneficially owns 2,214 derivative securities in the form of RSUs tied to MATERION common stock.

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

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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^*

Fashinpaur Melissa A

(Last) (First) (Middle)

6070 PARKLAND BOULEVARD

(Street)

MAYFIELD HEIGHTS 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)
	Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/05/2025

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)	12/05/2025		A		2		(2)	(3)	Common Stock	2	$0	2,214	D

Explanation of Responses:

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

2. These restricted stock 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:

Exhibit 24 Power of Attorney

	/s/Michelle R. Mekinda, as Attorney-In-Fact	12/09/2025
	** 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 insider transaction did MATERION Corp (MTRN) report in this Form 4?

MATERION Corp disclosed that its Chief Accounting Officer acquired 2 restricted stock units (RSUs) of MTRN common stock on 12/05/2025, at a price of $0 per unit.

How many MTRN restricted stock units does the reporting person own after this transaction?

Following the reported transaction, the officer directly beneficially owns 2,214 derivative securities in the form of restricted stock units tied to MATERION common stock.

Why did the MATERION Corp (MTRN) officer receive 2 additional restricted stock units?

The 2 RSUs were acquired upon the reinvestment of dividend equivalents, where dividends related to existing RSUs were converted into additional restricted stock units instead of being paid in cash.

When do the new MTRN restricted stock units vest?

The newly acquired restricted stock units will vest at the same time as the restricted stock units to which they relate, using the same vesting schedule.

What is the relationship of the reporting person to MATERION Corp (MTRN)?

The reporting person is an officer of MATERION Corp, serving as the company’s Chief Accounting Officer, and filed this Form 4 as an individual filer.

Is the reported MTRN transaction a derivative or non-derivative security?

The transaction involves a derivative security, specifically restricted stock units that represent rights to receive shares of MATERION common stock.