MKS Inc (MKSI) sees JPMorgan disclose 3.4M-share, 5% beneficial stake

Rhea-AI Filing Summary

JPMorgan Chase & Co. reports beneficial ownership of 3,417,585 shares of MKS Inc common stock, representing 5.0% of the class.

It has sole power to vote 3,229,004 shares and shared voting power over 4,191 shares, plus sole dispositive power over 3,416,018 shares and shared dispositive power over 1,243 shares. The position is held through multiple JPMorgan subsidiaries.

Key Figures

Beneficial ownership: 3,417,585 shares Percent of class: 5.0% Sole voting power: 3,229,004 shares +3 more

6 metrics

Beneficial ownership 3,417,585 shares Shares of MKS Inc common stock beneficially owned by JPMorgan Chase & Co.

Percent of class 5.0% Portion of MKS Inc common stock class beneficially owned

Sole voting power 3,229,004 shares Shares over which JPMorgan has sole power to vote or direct the vote

Shared voting power 4,191 shares Shares over which JPMorgan has shared power to vote or direct the vote

Sole dispositive power 3,416,018 shares Shares over which JPMorgan has sole power to dispose or direct disposition

Shared dispositive power 1,243 shares Shares over which JPMorgan has shared power to dispose or direct disposition

Key Terms

beneficially owned, Sole power to vote or to direct the vote, Sole power to dispose or to direct the disposition of, Schedule 13G, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: 3,417,585"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole power to vote or to direct the vote financial

"Number of shares as to which the person has | (i) Sole power to vote or to direct the vote"

Sole power to dispose or to direct the disposition of financial

"(iii) Sole power to dispose or to direct the disposition of: 3,416,018"

Schedule 13G regulatory

"Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

parent holding company regulatory

"If a parent holding company has filed this schedule, pursuant to (ii)(G)"

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Available on EDGAR 07/16/2026 - 04:07 PM Accepted by SEC EDGAR 07/16/2026 - 04:07 PM Learn about SEC filing dates

FAQ

What stake in MKSI does JPMorgan Chase & Co. report in this Schedule 13G?

JPMorgan Chase & Co. reports beneficial ownership of 3,417,585 MKS Inc shares, representing 5.0% of the common stock class. This ownership level triggers a Schedule 13G disclosure as a significant institutional holder of the company’s shares.

How much voting power over MKSI shares does JPMorgan have?

JPMorgan reports sole voting power over 3,229,004 shares and shared voting power over 4,191 shares. These figures show how many MKS Inc shares JPMorgan can vote independently versus those voted jointly with other parties.

What dispositive power over MKSI stock does JPMorgan report?

JPMorgan reports sole dispositive power over 3,416,018 shares and shared dispositive power over 1,243 shares. Dispositive power refers to the authority to sell or otherwise direct the disposition of the MKS Inc common stock.

Which JPMorgan entities are involved in holding MKSI shares?

The reported MKS Inc position is held through several JPMorgan subsidiaries, including J.P. Morgan Trust Company of Delaware, J.P. Morgan Securities LLC, JPMorgan Chase Bank, National Association, and other affiliated asset management and wealth management entities listed in the disclosure.

What class of MKSI securities is covered by JPMorgan’s 13G?

The Schedule 13G covers MKS Inc common stock with no par value. JPMorgan’s reported beneficial ownership, voting power, and dispositive power all relate specifically to this class of common equity securities identified by CUSIP 55306N104.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

MKS INC

(Name of Issuer)

Common Stock, no par value

(Title of Class of Securities)

55306N104

(CUSIP Number)

06/30/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 55306N104

1

Names of Reporting Persons

JPMORGAN CHASE & CO

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,229,004.00
6	Shared Voting Power 4,191.00
7	Sole Dispositive Power 3,416,018.00
8	Shared Dispositive Power 1,243.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,417,585.00

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)

5.0 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MKS INC
(b)	Address of issuer's principal executive offices: 2 TECH DRIVE, ANDOVER, MASSACHUSETTS, 01810.
Item 2.
(a)	Name of person filing: JPMORGAN CHASE & CO.
(b)	Address or principal business office or, if none, residence: 270 Park Avenue, New York, NY 10017
(c)	Citizenship: DE
(d)	Title of class of securities: Common Stock, no par value
(e)	CUSIP Number(s): 55306N104
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: 3,417,585
(b)	Percent of class: 5.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3,229,004
	(ii) Shared power to vote or to direct the vote: 4,191
	(iii) Sole power to dispose or to direct the disposition of: 3,416,018
	(iv) Shared power to dispose or to direct the disposition of: 1,243
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	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. J.P. Morgan Trust Company of Delaware; J.P. Morgan Securities LLC; JPMorgan Chase Bank, National Association; JPMorgan Asset Management (UK) Limited; J.P. MORGAN SE; J.P. Morgan Investment Management Inc.; JPMorgan Asset Management (Taiwan) Limited; J.P. Morgan Wealth Management Solutions Inc.; 55I, LLC
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	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.

JPMORGAN CHASE & CO

Signature:	Rachel Tsvaygoft
Name/Title:	Vice President
Date:	07/16/2026