MKS Inc. (MKSI) furnishes Q3 2025 results via 8-K, Exhibit 99.1

MKS Inc. furnished an 8-K to announce financial results for the quarter ended September 30, 2025.

Rhea-AI Filing Summary

MKS Inc. furnished an 8-K to announce financial results for the quarter ended September 30, 2025. The company made the news available through a press release, which is attached as Exhibit 99.1.

The company specified that the information in this report and its exhibit is furnished, not filed, under the Exchange Act. As a result, it is not subject to Section 18 liabilities and will only be incorporated by reference in other filings if specifically referenced. MKS Inc.’s common stock trades on the Nasdaq Global Select Market under the symbol MKSI.

Insights

Equity disclosure analyst

Routine 8-K furnishing of earnings release; administrative in nature.

MKS Inc. announced quarterly results for the period ended September 30, 2025 via an attached press release (Exhibit 99.1). The company used Item 2.02, which typically accompanies earnings disclosures.

The company states the information is furnished, not filed, under the Exchange Act, which limits Section 18 liability and standard incorporation by reference. This is a common approach for earnings releases.

Without financial figures in the excerpt, the market impact hinges on details contained in Exhibit 99.1. Subsequent filings may provide further context if specifically incorporated by reference.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

FAQ

What did MKS Inc. (MKSI) announce in this 8-K?

MKS Inc. announced financial results for the quarter ended September 30, 2025, via a press release attached as Exhibit 99.1.

Which period do the MKSI results cover?

The results cover the quarter ended September 30, 2025.

Where can I find the detailed MKSI results?

Details are in the press release attached as Exhibit 99.1 to the 8-K.

Is the MKSI information considered filed or furnished?

The company states the information is furnished, not filed, and not subject to Section 18 liabilities.

What exchange and symbol does MKS Inc. trade under?

MKS Inc.’s common stock trades on the Nasdaq Global Select Market under the symbol MKSI.

Which 8-K item did MKSI use for this disclosure?

Item 2.02, Results of Operations and Financial Condition.

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

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Accepted by SEC EDGAR 11/05/2025 - 04:31 PM Learn about SEC filing dates

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 05, 2025

MKS INC.

(Exact name of Registrant as Specified in Its Charter)

Massachusetts			000-23621	04-2277512
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
2 Tech Drive
Andover, Massachusetts				01810
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: 978 645-5500

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, no par value		MKSI		Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On November 5, 2025, MKS Inc. announced its financial results for the quarter ended September 30, 2025. The full text of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

The information in this Form 8-K and the Exhibit attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

99.1 Press Release dated November 5, 2025

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			MKS INC.
Date:	November 5, 2025	By:	/s/ Ramakumar Mayampurath
			Name: Ramakumar Mayampurath Title: Executive Vice President and Chief Financial Officer