Materion Corp (MTRN) director reports sale of 3,705 common shares at $292

Rhea-AI Filing Summary

MATERION Corp director Darlene J. S. Solomon reported selling 3,705 shares of common stock on 2026-08-07 in an open-market or private transaction. The weighted average sale price was $292.224 per share, with trades occurring between $292.190 and $292.690. Following this sale, she directly holds 26,718 shares of MATERION common stock.

Insider Trade Summary

Net Seller: 3,705 shares

Net Sell 1 txn

Insider Solomon Darlene J. S.

Role Director

Sold 3,705 shs ($1.08M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	3,705	$292.224	$1.08M

Holdings After Transaction: Common Stock — 26,718 shares (Direct)

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 $292.190 to $292.690 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: 3,705 shares Weighted average sale price: $292.224 per share Price range of trades: $292.190–$292.690 per share +1 more

4 metrics

Shares sold 3,705 shares Non-derivative sale of common stock on 2026-08-07

Weighted average sale price $292.224 per share Price for 3,705 shares of common stock sold

Price range of trades $292.190–$292.690 per share Range of individual sale prices within the reported transaction

Shares held after sale 26,718 shares Director’s direct holdings of common stock following the transaction

Key Terms

weighted average price, open market or private transaction, non-derivative, direct ownership

4 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.

open market or private transaction financial

"Sale in open market or private transaction"

non-derivative financial

"transaction_type": "non-derivative""

direct ownership financial

"ownership_type": "direct""

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

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FAQ

What insider transaction did MATERION Corp (MTRN) report on this Form 4?

MATERION Corp reported that director Darlene J. S. Solomon sold 3,705 shares of common stock on 2026-08-07 in an open-market or private transaction, as disclosed in the Form 4 filing.

At what price did the MTRN director sell shares in this Form 4 filing?

The director’s sale used a weighted average price of $292.224 per share, with individual trades executed between $292.190 and $292.690, according to the transaction footnote in the filing.

How many MTRN shares does the reporting person hold after this Form 4 sale?

After selling 3,705 shares, director Darlene J. S. Solomon directly holds 26,718 shares of MATERION Corp common stock, as reported in the post-transaction holdings column of the Form 4.

Was the MTRN Form 4 sale by Darlene J. S. Solomon under a Rule 10b5-1 plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed for this transaction. The filing does not state that the reported sale was made pursuant to a Rule 10b5-1 trading plan.

What type of security was involved in the MTRN Form 4 transaction?

The transaction involved common stock of MATERION Corp. The Form 4 reports a non-derivative sale of 3,705 shares, with resulting direct ownership of 26,718 common shares by the director.

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^*

Solomon Darlene J. S.

(Last) (First) (Middle)

6070 PARKLAND BLVD.

(Street)

MAYFIELD HEIGHTS 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)
08/07/2026

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	08/07/2026		S		3,705	D	$292.224(1)	26,718	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

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 $292.190 to $292.690 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	08/11/2026
	** 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)