[Form 4] Materion Corporation Insider Trading Activity

Rhea-AI Filing Summary

Emily M. Liggett, a director of Materion Corporation (MTRN), reported transactions on 09/05/2025. The filing discloses the acquisition of 2 restricted stock units that each represent a right to one share and were recorded at a price of $0; those units will vest in line with the related restricted stock units (vesting no later than May 8, 2026 or the next annual meeting). The report also shows 2,002 shares beneficially owned following the reported derivative transactions (direct) and 1,267.944 shares held indirectly in the Directors Deferred Compensation Plan. The Form 4 was signed by an attorney-in-fact on 09/09/2025.

Positive

• Director participation in compensation plans: Acquisition of 2 restricted stock units demonstrates alignment with shareholder interests through equity-based pay.
• Significant indirect holdings: 1,267.944 shares held in the Directors Deferred Compensation Plan indicate ongoing stake retention by the director.

Negative

• Reported disposition of 3,776 common shares: A sale is recorded in the filing without explanatory detail on price or purpose.
• Limited context provided: The Form 4 does not disclose prices or reasons for the disposition, preventing assessment of materiality.

Insights

Corporate Governance Expert

TL;DR: Routine director compensation and internal plan activity; no unexpected governance red flags.

The Form 4 reports standard director compensation mechanics: reinvested dividend equivalents converted into 2 restricted stock units and recorded as acquisitions at $0, with vesting tied to existing award schedules. The presence of indirect holdings in a Directors Deferred Compensation Plan is common for director deferrals. The filing does show a disposal line of 3,776 common shares, which is recorded but not explained in the form; the filing itself contains no indication of related-party transactions or governance concerns. This appears to be administrative reporting of compensation and plan-related movements rather than material corporate action.

Securities/Insider Trading Analyst

TL;DR: Insider activity includes small RSU acquisitions and a reported disposition; activity looks immaterial to market.

The reported acquisition of 2 restricted stock units (worth one share each) at $0 and the indirect holding of 1,267.944 shares in a deferred comp plan represent routine, low-dollar insider compensation transactions. The filing also lists a disposition of 3,776 common shares; without price or context provided in the Form 4, it is not possible to assess proceeds or tax-driven motives. Overall, these transactions are typical director plan activity and unlikely to be material for investors by themselves.

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^*

LIGGETT EMILY M

(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)

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		1.6	A	$0	1,267.944	I	Held in Directors Deferred Comp. Plan
Common Stock								3,776	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)	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.
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FAQ

What transactions did Emily M. Liggett report on the Form 4 for MTRN?

The Form 4 dated 09/05/2025 shows acquisition of 2 restricted stock units (each representing one share) and a reported disposition of 3,776 common shares; it also reports 1,267.944 shares held indirectly in a Directors Deferred Compensation Plan.

When do the acquired restricted stock units vest according to the filing?

The restricted stock units acquired upon reinvestment of dividend equivalents vest at the same time as the related restricted stock units, no later than May 8, 2026 or the date of the next annual meeting of shareholders.

How many shares does Liggett beneficially own after the reported transactions?

The filing indicates 2,002 shares beneficially owned following the reported derivative transactions (direct) and 1,267.944 shares held indirectly in the Directors Deferred Compensation Plan.

Was the Form 4 signed by the reporting person?

The Form 4 was signed on behalf of the reporting person by an attorney-in-fact, Michelle R. Mekinda, on 09/09/2025.

Does the Form 4 explain the reason for the 3,776-share disposition?

No. The Form 4 records a disposition of 3,776 common shares but does not provide a price or explanation for the sale within the filing.