[Form 4] Materion Corporation Insider Trading Activity

Rhea-AI Filing Summary

Reddy N. Mohan, a director of Materion Corporation (MTRN), reported acquisitions on 09/05/2025. The filing shows 56.848 shares of common stock were acquired into a directors' deferred compensation plan at a reported price of $0, increasing indirect beneficial ownership to 45,111.525 shares held in the plan. In addition, 2 restricted stock units (each converting to one share) were acquired and are shown as 2 direct shares. The restricted stock units were issued as reinvested dividend equivalents and will vest on the earlier of May 8, 2026 or the next annual meeting of shareholders. The form was signed by an attorney-in-fact on 09/09/2025.

Insights

Securities Analyst

TL;DR: Director acquired a small number of shares via dividend reinvestment and two RSUs; holdings are largely indirect through a deferred compensation plan.

The Form 4 discloses routine insider activity: a 56.848-share acquisition into the director's deferred compensation plan at a reported price of $0 (reflecting dividend-equivalent reinvestment), and 2 restricted stock units (recorded as 2 direct shares) that vest by May 8, 2026 or at the next annual meeting. The filing indicates the director retains substantial indirect holdings in the deferred compensation plan (45,111.525 shares reported). These transactions appear administrative and compensation-related rather than market-driven purchases.

Corporate Governance Expert

TL;DR: Activity aligns with typical director compensation practices; vesting schedule and deferred plan holding are disclosed clearly.

The reported movements are consistent with equity-based director compensation: reinvested dividend equivalents increased RSU counts and a small number of RSUs converted to direct share equivalents. The filing clearly identifies the indirect ownership through the directors' deferred compensation plan and provides vesting timing for the RSUs. No leadership changes, disposals, or unusually large transfers are reported.

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^*

REDDY N MOHAN

(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)
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
Common Stock	09/05/2025		A		56.848	A	$0	45,111.525	I	Held in Directors Deferred Compensation Plan.

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		2		(2)	(3)	Common Stock	2	$0	2,002	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 (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	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 did MTRN director Reddy N. Mohan acquire on 09/05/2025?

He acquired 56.848 shares into a directors' deferred compensation plan (reported price $0) and 2 restricted stock units recorded as 2 direct shares.

How many MTRN shares does Reddy N. Mohan beneficially own after the transaction?

The filing reports 45,111.525 shares held indirectly in the directors' deferred compensation plan and 2 shares directly from RSUs, per the Form 4.

Why was the price reported as $0 for the 56.848 shares?

The filing states these units were acquired upon the reinvestment of dividend equivalents, which is reported with a price of $0 in this Form 4.

When will the restricted stock units vest?

The RSUs will vest on the earlier of May 8, 2026 or the date of the next annual meeting of Materion shareholders.

Who signed the Form 4 for Reddy N. Mohan and when?

The Form 4 was signed by Michelle R. Mekinda, as Attorney-In-Fact on 09/09/2025.