Schedule 13G: State Street Holds 6.2% Stake in Materion (MTRN)

Rhea-AI Filing Summary

State Street Corporation reported beneficial ownership of 1,298,956 shares of Materion Corp, representing 6.2% of the company’s common stock. The Schedule 13G shows no sole voting or dispositive power and shared voting power of 1,224,482 shares with shared dispositive power over 1,298,956 shares, and states the holdings are held in the ordinary course of business and not for the purpose of changing control.

The filing names several State Street Global Advisors entities as the subsidiaries through which the securities were acquired and is signed by Elizabeth Schaefer, Senior Vice President and Chief Accounting Officer.

Positive

• Material disclosure: Beneficial ownership of 1,298,956 shares (6.2%) is clearly reported
• Passive classification: Filed on Schedule 13G and certified as held in the ordinary course of business

Negative

• None.

Insights

Financial Analyst

TL;DR: State Street holds a material passive stake of 6.2% in Materion, disclosed via Schedule 13G.

The filing documents a meaningful ownership position of 1,298,956 shares (6.2%), with shared voting power on 1,224,482 shares. Because this is a Schedule 13G, State Street characterizes the position as held in the ordinary course and not with the intent to influence control, which generally signals a passive, fiduciary or index-related holding rather than an activist stake. For investors, the item is notable as a sizeable institutional holding but does not indicate active governance engagement based on the filing language.

Corporate Governance Expert

TL;DR: The filing is a standard disclosure of a >5% passive holding with shared powers and named advisor entities.

The Schedule 13G lists multiple State Street Global Advisors entities as the relevant subsidiaries, consistent with asset-manager custody and advisory structures. The absence of sole voting or dispositive power and the explicit certification that the securities are not held to change control suggest limited direct influence by State Street on Materion governance based on this filing alone. This is a material disclosure for ownership transparency but does not, by itself, signal governance action.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

MATERION CORP

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

576690101

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 576690101

1

Names of Reporting Persons

STATE STREET CORPORATION

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,224,482.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,298,956.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,298,956.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.2 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MATERION CORP
(b)	Address of issuer's principal executive offices: 6070 PARKLAND BLVD , MAYFIELD HEIGHTS, OHIO, 44124
Item 2.
(a)	Name of person filing: STATE STREET CORPORATION;
(b)	Address or principal business office or, if none, residence: ONE CONGRESS STREET, SUITE 1, BOSTON MA 02114, UNITED STATES
(c)	Citizenship: MA
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 576690101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1298956.00
(b)	Percent of class: 6.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 1,224,482
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1,298,956
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. NOT APPLICABLE
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. SSGA FUNDS MANAGEMENT, INC. (IA);STATE STREET GLOBAL ADVISORS EUROPE LIMITED (IA);STATE STREET GLOBAL ADVISORS LIMITED (IA);STATE STREET GLOBAL ADVISORS TRUST COMPANY (IA);STATE STREET GLOBAL ADVISORS, AUSTRALIA, LIMITED (IA);STATE STREET GLOBAL ADVISORS, LTD. (IA);
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. NOT APPLICABLE
Item 9.	Notice of Dissolution of Group.
	Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5. NOT APPLICABLE

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

STATE STREET CORPORATION

Signature:	ELIZABETH SCHAEFER
Name/Title:	SENIOR VICE PRESIDENT, CHIEF ACCOUNTING OFFICER
Date:	08/08/2025

FAQ

Who filed the Schedule 13G for Materion (MTRN)?

The filing was made by State Street Corporation, signed by Elizabeth Schaefer, Senior Vice President and Chief Accounting Officer.

How many Materion (MTRN) shares does State Street report owning?

State Street reports beneficial ownership of 1,298,956 shares of Materion common stock.

What percentage of Materion (MTRN) does the reported stake represent?

The reported stake represents 6.2% of the class.

What voting and dispositive powers are reported?

The filing shows 0 sole voting power, 1,224,482 shared voting power, 0 sole dispositive power, and 1,298,956 shared dispositive power.

Was the stake reported as intended to change control of Materion (MTRN)?

No. The Schedule 13G certification states the shares are held in the ordinary course of business and were not acquired to change or influence control.

Which State Street entities are identified as holding the securities?

The filing lists several State Street Global Advisors entities including SSGA Funds Management, Inc. and other State Street Global Advisors affiliates as the relevant subsidiaries.