MKSI gains new 5.64% institutional holder as Victory Capital files 13G

Rhea-AI Filing Summary

Victory Capital Management, Inc. filed a Schedule 13G indicating a passive ownership stake in MKS Inc. (MKSI). As of 30 Jun 2025 the investment adviser beneficially owned 3,787,201 common shares, representing 5.64 % of the outstanding class. The firm holds sole voting power over 3,787,201 shares (3,711,418 specifically listed for sole vote) and sole dispositive power over the full position, with no shared voting or dispositive authority.

Key points:

• Filing trigger: first time (or updated) crossing the 5 % threshold, requiring disclosure under Exchange Act Rule 13d-1(b).
• Reporting person classification: Investment Adviser (IA) headquartered in New York; business address in San Antonio, TX.
• Certification states the shares were acquired in the ordinary course and not for the purpose of influencing control.
• Signature by Chief Compliance Officer Barry Garrett on 08 Aug 2025.

Positive

• Victory Capital’s 5.64 % holding adds a notable institutional owner to MKSI’s register, potentially signaling confidence.

Negative

• None.

Insights

Equity Portfolio Manager

TL;DR — Passive 5.64 % stake; modest signal of institutional interest, limited immediate impact.

Crossing the 5 % threshold obliges disclosure but does not imply activism. Victory Capital’s 3.8 m-share position suggests growing institutional support, yet the certification affirms no intent to influence control. For investors, the filing adds transparency to MKSI’s shareholder base but offers no guidance on operations or earnings. Absent activist language or coordinated group activity, market impact is likely neutral.

Corporate Governance Analyst

TL;DR — Ownership disclosure enhances transparency; governance risk unchanged.

Because Victory Capital reports sole voting and dispositive power, board dynamics remain unaffected. The ordinary-course certification mitigates control-change concerns. Therefore, governance implications are minimal; however, the presence of a regulated adviser subject to comparable foreign rules may reassure some investors about stewardship quality.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

MKS Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

55306N104

(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. 55306N104

1

Names of Reporting Persons

Victory Capital Management, Inc.

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

NEW YORK

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,787,201.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,711,418.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,787,201.00

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)

5.64 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MKS Inc
(b)	Address of issuer's principal executive offices: 2 Tech DR Andover, Ma 01810-2434
Item 2.
(a)	Name of person filing: Victory Capital Management, Inc.
(b)	Address or principal business office or, if none, residence: 15935 La Cantera Pkwy San Antonio, TX 78256
(c)	Citizenship: New York
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 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: 3,787,201
(b)	Percent of class: 5.64 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3,711,418
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3,787,201
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
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.
	Not Applicable
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. By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Victory Capital Management, Inc. is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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.

Victory Capital Management, Inc.

Signature:	Barry Garrett
Name/Title:	Chief Compliance Officer
Date:	08/08/2025

FAQ

How many MKSI shares does Victory Capital own?

Victory Capital reports 3,787,201 common shares of MKS Inc., equating to 5.64 % of shares outstanding.

Does the filing indicate activist intentions toward MKSI?

No. The Schedule 13G certification states the shares were acquired in the ordinary course and not to influence control.

What voting power does Victory Capital hold over MKSI shares?

The firm has sole voting power over 3,787,201 shares and no shared voting authority.

Who signed the Schedule 13G for Victory Capital Management?

Chief Compliance Officer Barry Garrett signed the statement on 08 Aug 2025.

Why was this Schedule 13G filed?

Crossing the 5 % ownership threshold on 30 Jun 2025 triggered the disclosure requirement under Rule 13d-1(b).