Materion (MTRN) director granted RSUs, exercises 2,006 share units

Rhea-AI Filing Summary

Materion Corp director Craig S. Shular reported equity compensation and an option-style exercise. On May 8, 2026, he received a grant of 758 restricted stock units (RSUs), each representing one share of Materion common stock. On May 7, 2026, RSUs granted on May 8, 2025 vested and were exercised for 2,006 shares of common stock at a conversion price of $0.00 per share, reflecting a compensation-related conversion rather than a market purchase.

Following these transactions, Shular holds 5908.972 shares of common stock directly and 54,793.053 shares indirectly through a directors deferred compensation plan, along with 758 RSUs outstanding. No shares were sold or disposed of in this filing, indicating an exercise-and-hold pattern with continued equity exposure to Materion.

Insights

Equity compensation analyst

Routine director equity awards and RSU exercise with no share sales.

Director Craig S. Shular received 758 RSUs and exercised 2,006 RSUs into common stock at a $0.00 conversion price. These are standard equity compensation events rather than open-market trades, so they carry limited signaling value.

The filing shows Shular holding 5908.972 shares directly and 54,793.053 shares indirectly via a directors deferred compensation plan after the transactions, plus 758 RSUs outstanding. With no reported sales, this reflects an exercise-and-hold pattern, and the overall impact on Materion’s share count appears modest from the disclosed figures.

Insider Trade Summary

2,006 shares exercised/converted

Mixed 4 txns

Insider SHULAR CRAIG S

Role null

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	758	$0.00	--
Exercise	Restricted Stock Units	2,006	$0.00	--
Exercise	Common Stock	2,006	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 758 shares (Direct, null); Common Stock — 54,793.053 shares (Indirect, Held In Directors Deferred Comp. Plan); Common Stock — 5,908.972 shares (Direct, null)

Footnotes (1)

1. Each restricted stock unit represents a right to receive one share of MTRN common stock. These shares were issued pursuant to the vesting of a restricted stock unit award made May 8, 2025 that vested on May 7, 2026. Expiration Date is the same as the Date Exercisable. The restricted stock units generally vest on the earlier of (1) the first anniversary of the grant date and (2) the next annual meeting of MTRN's shareholders that follows the grant.

Key Figures

New RSU grant: 758 RSUs RSUs exercised: 2,006 shares Conversion price: $0.00 per share +3 more

6 metrics

New RSU grant 758 RSUs Granted May 8, 2026 to director Craig S. Shular

RSUs exercised 2,006 shares RSUs granted May 8, 2025, vested and converted May 7, 2026

Conversion price $0.00 per share Exercise of 2,006 restricted stock units into common stock

Direct common shares held 5908.972 shares Direct ownership after reported transactions

Indirect common shares held 54,793.053 shares Indirect ownership via directors deferred compensation plan after transactions

RSUs outstanding 758 units Restricted stock units remaining after grant and exercises

Key Terms

Restricted Stock Units, directors deferred compensation plan, Exercise or conversion of derivative security, Grant, award, or other acquisition, +1 more

5 terms

Restricted Stock Units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

directors deferred compensation plan financial

"Held In Directors Deferred Comp. Plan"

A directors deferred compensation plan lets a board member postpone receiving part or all of their cash fees or stock-based pay until a future date, often retirement, allowing taxes to be delayed and payouts to be structured over time. Investors care because these plans change a company’s future cash obligations and reveal how the board’s pay is aligned with long-term performance—like choosing to take a paycheck later to tie personal reward to the company’s future results.

Exercise or conversion of derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

vesting financial

"These shares were issued pursuant to the vesting of a restricted stock unit award made May 8, 2025 that vested on May 7, 2026."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Form 4 Insider Transactions: What Each Field Means →

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^*

SHULAR CRAIG S

(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)
05/07/2026

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	05/07/2026		M		2,006	A	(1)	54,793.053	I	Held In Directors Deferred Comp. Plan
Common Stock								5,908.972	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)	05/07/2026		M			2,006	(2)	(3)	Common Stock	2,006	$0	0	D
Restricted Stock Units	(1)	05/08/2026		A		758		(4)	(3)	Common Stock	758	$0	758	D

Explanation of Responses:

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

2. These shares were issued pursuant to the vesting of a restricted stock unit award made May 8, 2025 that vested on May 7, 2026.

3. Expiration Date is the same as the Date Exercisable.

4. The restricted stock units generally vest on the earlier of (1) the first anniversary of the grant date and (2) the next annual meeting of MTRN's shareholders that follows the grant.

Remarks:

	/s/Michelle R. Mekinda, as Attorney-In-Fact	05/11/2026
	** 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)

FAQ

What insider transactions did Materion (MTRN) director Craig S. Shular report?

Craig S. Shular reported a grant of 758 restricted stock units and the exercise of 2,006 previously granted RSUs into common stock at a $0.00 conversion price. The filing shows these as compensation-related equity awards, not open-market purchases or sales.

How many Materion (MTRN) shares does Craig S. Shular hold after these transactions?

After the reported transactions, Craig S. Shular holds 5908.972 shares of Materion common stock directly and 54,793.053 shares indirectly through a directors deferred compensation plan. He also has 758 restricted stock units outstanding, each representing a right to receive one share.

Were any Materion (MTRN) shares sold in Craig S. Shular’s latest Form 4?

No shares were reported as sold. The Form 4 shows a grant of 758 restricted stock units and the exercise of 2,006 restricted stock units into common stock, with no sale code or tax-withholding disposition entries, indicating no share disposals in this filing.

What do the 758 restricted stock units granted to the Materion (MTRN) director represent?

Each of the 758 restricted stock units represents a right to receive one share of Materion common stock. According to the disclosure, these RSUs generally vest on the earlier of the first anniversary of the grant date or the next annual meeting of Materion shareholders.

What was the nature of the 2,006-share Materion (MTRN) transaction on May 7, 2026?

The 2,006-share transaction on May 7, 2026 reflects the exercise of restricted stock units granted on May 8, 2025 that vested on May 7, 2026. The exercise converted RSUs into common stock at a $0.00 price as part of the director’s equity compensation.

How are Craig S. Shular’s indirect Materion (MTRN) holdings structured?

Shular’s indirect holdings consist of 54,793.053 shares of Materion common stock held in a directors deferred compensation plan. The Form 4 describes this as indirect ownership, separate from his directly held 5908.972 shares and 758 outstanding restricted stock units.