MATERION (MTRN) director gains additional RSUs and deferred common shares

Rhea-AI Filing Summary

MATERION Corp director Robert J. Phillippy reported routine equity awards. He received 2.0000 restricted stock units, each representing one share of common stock, through dividend-equivalent reinvestment. He also acquired 11.4860 common shares credited to a Directors Deferred Compensation Plan. Following these awards, he holds 2,006.0000 restricted stock units, 12,027.2530 common shares indirectly through the plan, and 5,158.0000 common shares directly. The new restricted stock units vest at the earlier of May 8, 2026 or the next annual shareholder meeting.

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^*

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)
03/06/2026

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	03/06/2026		A		11.486	A	$0	12,027.253	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)	03/06/2026		A		2		(2)	(3)	Common Stock	2	$0	2,006	D

Explanation of Responses:

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

2. The restricted stock units, which were acquired upon the reinvestment of the 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:

	/s/Michelle R. Mekinda, as Attorney-In-Fact	03/10/2026
	** 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 transactions did MATERION (MTRN) director Robert J. Phillippy report?

Robert J. Phillippy reported acquiring equity awards, not making market trades. He received 2.0000 restricted stock units via dividend-equivalent reinvestment and 11.4860 common shares credited to a Directors Deferred Compensation Plan, both classified as grant or award acquisitions.

How many restricted stock units does MTRN director Robert J. Phillippy now hold?

After the reported grant, Phillippy holds 2,006.0000 restricted stock units. Each unit represents the right to receive one share of MATERION common stock, providing him with additional deferred equity exposure instead of immediate cash compensation.

When do Robert J. Phillippy’s new MTRN restricted stock units vest?

The newly acquired restricted stock units will vest at the earlier of May 8, 2026 or the date of MATERION’s next annual shareholder meeting, matching the vesting schedule of the original restricted stock units to which these dividend-equivalent units relate.

Did MTRN director Robert J. Phillippy buy or sell shares on the open market?

The filing shows no open-market purchases or sales. All reported activity consists of grant or award acquisitions and a holding entry, reflecting routine compensation and deferred share credits rather than discretionary trading in MATERION stock.

What are Robert J. Phillippy’s direct and indirect common stock holdings in MTRN after these transactions?

Following the reported awards, Phillippy holds 5,158.0000 MATERION common shares directly. Indirectly, through a Directors Deferred Compensation Plan, he holds 12,027.2530 common shares, reflecting accrued and credited amounts in that deferred compensation arrangement.

What does each MTRN restricted stock unit reported by Robert J. Phillippy represent?

Each reported restricted stock unit represents a right to receive one share of MATERION common stock. These units are non-cash equity awards that convert into shares upon vesting, aligning the director’s compensation with long-term shareholder interests over time.