Materion director sells 1,012 shares at $232.42

Materion Corp director Emily M. Liggett disclosed an open-market sale of 1,012 shares and now holds stock both directly and through a deferred compensation plan.

Rhea-AI Filing Summary

MATERION Corp (MTRN) director Emily M. Liggett reported selling 1,012 shares of common stock on September 1, 2026 in an open-market or private transaction at a weighted average price of $232.42 per share, with individual trades ranging from $232.31 to $232.59. After this sale, she held 3,161 shares directly and 1,271.302 shares indirectly through the Directors Deferred Compensation Plan. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Net Seller: 1,012 shares

Net Sell 2 txns

Insider LIGGETT EMILY M

Role Director

Sold 1,012 shs ($235K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	1,012	$232.421	$235K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 3,161 shares (Direct); Common Stock — 1,271.302 shares (Indirect, Held in Directors Deferred Comp. Plan)

Footnotes (1)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $232.310 to $232.590, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Shares sold: 1,012 shares Weighted average sale price: $232.42 per share Sale price range: $232.31–$232.59 per share +2 more

5 metrics

Shares sold 1,012 shares Common stock sale by director on September 1, 2026

Weighted average sale price $232.42 per share Open-market or private sale on September 1, 2026

Sale price range $232.31–$232.59 per share Range of individual trade prices for the 1,012 shares sold

Direct holdings after transaction 3,161 shares Common stock directly owned by Emily M. Liggett after the sale

Indirect holdings after transaction 1,271.302 shares Common stock held through the Directors Deferred Compensation Plan

Key Terms

weighted average price, Directors Deferred Comp. Plan, open market or private transaction

3 terms

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Directors Deferred Comp. Plan financial

"Held in Directors Deferred Comp. Plan"

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did MTRN director Emily M. Liggett report?

Emily M. Liggett reported selling 1,012 shares of Materion Corp common stock on September 1, 2026 in an open-market or private transaction, at a weighted average price of $232.42 per share, with trade prices ranging from $232.31 to $232.59.

How many MTRN shares does Emily M. Liggett hold after the reported sale?

After the reported sale, Emily M. Liggett held 3,161 shares of Materion Corp common stock directly and 1,271.302 shares indirectly through the Directors Deferred Compensation Plan as of September 1, 2026.

At what prices were the sold MTRN shares traded?

The 1,012 Materion Corp shares were sold at a weighted average price of $232.42 per share. According to the disclosure, the individual transactions occurred at prices ranging from $232.31 to $232.59 per share, inclusive.

Was the MTRN insider sale made under a Rule 10b5-1 trading plan?

No. The disclosure indicates that the Rule 10b5-1 checkbox is not marked, so no Rule 10b5-1 trading plan is reported in connection with Emily M. Liggett’s sale of 1,012 Materion Corp shares.

What portion of Emily M. Liggett’s MTRN holdings are indirect?

Emily M. Liggett reported 1,271.302 shares of Materion Corp common stock held indirectly through the Directors Deferred Compensation Plan, in addition to her directly held 3,161 shares as of September 1, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/03/2026 - 10:18 AM EDT Accepted by SEC EDGAR 09/03/2026 - 10:17 AM EDT Learn about SEC filing dates

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^*

LIGGETT EMILY M

(Last) (First) (Middle)

6070 PARKLAND BLVD.

(Street)

MAYFIELD HTS. OHIO 44124

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/01/2026		S		1,012	D	$232.421(1)	3,161	D
Common Stock								1,271.302	I	Held in Directors Deferred Comp. 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

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $232.310 to $232.590, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

	/s/Michelle R. Mekinda, as Attorney-In-Fact	09/03/2026
	** 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.
* Form 4: SEC 1474 (03-26)