Materion (MTRN) director reports new stock and RSU awards on Form 4

Rhea-AI Filing Summary

Materion Corp director reported routine equity awards and holdings. On 12/05/2025, the director acquired 13.261 shares of Materion common stock at $0, increasing the balance to 12,015.767 shares held indirectly in a Directors Deferred Compensation Plan. The filing also reports 2 restricted stock units acquired on the same date from dividend equivalent reinvestment, bringing total directly held restricted stock units to 2,004.

Each restricted stock unit represents the right to receive one share of Materion common stock. These new units will vest at the same time as the related restricted stock units, which is the earlier of May 8, 2026 or the date of the next annual meeting of Materion shareholders. The report confirms the director’s ongoing equity-based compensation and alignment with shareholder interests.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider PHILLIPPY ROBERT J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	2	$0.00	--
Grant/Award	Common Stock	13.261	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 2,004 shares (Direct); Common Stock — 12,015.767 shares (Indirect, Held in Directors Deferred Compensation Plan); Common Stock — 5,158 shares (Direct)

Footnotes (1)

1. Each restricted stock unit represents a right to receive one share of MTRN common stock. 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 (earlier of May 8, 2026 and the date of the next annual meeting of MTRN's shareholders). Expiration Date is the same as the Date Exercisable.

Form 4 Insider Transactions: What Each Field Means →

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
Estimated average burden
hours per response:			0.5

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^*

PHILLIPPY ROBERT J

(Last) (First) (Middle)

6070 PARKLAND BLVD.

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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
Common Stock	12/05/2025		A		13.261	A	$0	12,015.767	I	Held in Directors Deferred Compensation Plan
Common Stock								5,158	D

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	2,004	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 (earlier of May 8, 2026 and the date of the next annual meeting of MTRN's shareholders).

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 (MTRN) report on this Form 4?

A Materion director reported acquiring 13.261 shares of common stock at $0 and 2 restricted stock units on 12/05/2025 as part of compensation arrangements.

How many Materion (MTRN) shares does the director now beneficially own?

Following the reported transaction, the director beneficially owns 12,015.767 shares of Materion common stock held indirectly in a Directors Deferred Compensation Plan.

What are the restricted stock units reported for Materion (MTRN)?

The filing shows 2 restricted stock units acquired on 12/05/2025, with a total of 2,004 restricted stock units beneficially owned directly. Each unit represents a right to receive one share of MTRN common stock.

When do the newly acquired Materion (MTRN) restricted stock units vest?

The new restricted stock units, acquired from dividend equivalent reinvestment, will vest at the earlier of May 8, 2026 or the date of the next annual meeting of Materion’s shareholders.

Was the Materion (MTRN) director acting as a 10% owner in this Form 4?

No. The Form 4 identifies the reporting person’s relationship to Materion as a Director, and the 10% Owner box is not checked.

Are the Materion (MTRN) shares held directly or indirectly by the director?

The 12,015.767 shares of Materion common stock are held indirectly through a Directors Deferred Compensation Plan, while the 2,004 restricted stock units are held directly.