Form 8-K

8-K — MKS INC

Accession: 0001193125-26-335274

Filed: 2026-08-05

Period: 2026-08-05

CIK: 0001049502

SIC: 3823 (INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — mksi-20260805.htm (Primary)

EX-99.1 (mksi-ex99_1.htm)

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XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: mksi-20260805.htm · Sequence: 1

8-K

0001049502false00010495022026-08-052026-08-05

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): August 05, 2026

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 August 5, 2026, MKS Inc. announced its financial results for the quarter ended June 30, 2026. 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 August 5, 2026

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:

August 5, 2026

By:

/s/ Ramakumar Mayampurath

Name: Ramakumar Mayampurath

Title: Executive Vice President and Chief Financial Officer

EX-99.1

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EX-99.1

EXHIBIT 99.1

MKS Inc. Reports Second Quarter 2026 Financial Results

•

Revenue of $1,248 million, above the high end of guidance

•

GAAP net income of $175 million and net income per diluted share of $2.41, each above the high end of guidance

•

Adjusted EBITDA of $358 million and Non-GAAP net earnings per diluted share of $3.30, each above the high end of guidance

Andover, MA, August 5, 2026 -- MKS Inc. (NASDAQ: MKSI), a global provider of enabling technologies that transform our world, today reported its financial results for the second quarter of 2026.

“MKS delivered accelerated double-digit year-over-year revenue growth across each of our end markets in the second quarter, demonstrating our foundational role as an enabler of advanced electronics,” said John T.C. Lee, President and Chief Executive Officer. “As AI-driven investment levels intensify across semiconductor and advanced packaging applications, our momentum is continuing to build, including rapidly growing order volumes. With the industry’s broadest technology capabilities, deep relationships in the electronics ecosystem, and enhanced capacity to deliver to customer demand, we are confident in MKS’ near- and long-term growth prospects.”

“Our second quarter revenue and key profitability metrics once again came in at or above the high end of our guided ranges, underscoring our strong execution and favorable position in a robust demand environment,” said Ram Mayampurath, Executive Vice President and Chief Financial Officer. “We are demonstrating our ability to drive profitable growth and healthy free cash flow as we further strengthen our balance sheet and invest for the future.”

Selected GAAP and Non-GAAP Financial Measures

(In millions, except per share data)

Three Months Ended

Six Months Ended

Q2 2026

Q1 2026

Q2 2025

Q2 2026

Q2 2025

Net Revenues

Semiconductor

554

466

432

1,019

846

Electronics & Packaging

381

321

266

703

519

Specialty Industrial

313

291

275

604

545

Total net revenues

1,248

1,078

973

2,326

1,910

Gross Margin

47.6

47.0

46.6

47.3

47.0

GAAP Financial Measures

Operating margin

20.1

13.8

13.9

17.2

12.9

Net income

175

258

114

Net income per diluted share

2.41

1.18

0.92

3.60

1.69

Non-GAAP Financial Measures

Operating margin

25.6

21.8

20.8

23.9

20.5

Net earnings

232

157

119

389

235

Net earnings per diluted share

3.30

2.30

1.77

5.61

3.48

Additional Financial Information

At June 30, 2026, the Company had $611 million in cash and cash equivalents, $1.5 billion of secured term loan principal outstanding, $1.4 billion of convertible senior notes outstanding, €1.0 billion of senior notes outstanding and up to $1.0 billion of additional borrowing capacity under a revolving credit facility, subject to certain leverage ratio requirements. The trading price of our common stock during the second quarter of 2026 resulted in the satisfaction of the stock price conversion condition under the indenture governing our convertible senior notes. As a result, the convertible senior notes are convertible, in whole or in part, at the option of the noteholders at any time during the third quarter of 2026, and were classified as short-term debt, net of issuances costs, at June 30, 2026.

In August 2026, the Company made a voluntary principal prepayment of $100 million on its USD term loan B.

Third Quarter 2026 Guidance

•

Revenue of $1,350 million, plus or minus $40 million

•

Gross margin of 47.0%, plus or minus 1.0%

•

GAAP operating expenses of $346 million, plus or minus $5 million and Non-GAAP operating expenses of $280 million, plus or minus $5 million

•

GAAP net income of $201 million, plus or minus $23 million and Non-GAAP net earnings of $257 million, plus or minus $22 million

•

GAAP net income per diluted share of $2.73, plus or minus $0.31 and Non-GAAP net earnings per diluted share of $3.58, plus or minus $0.31

•

Adjusted EBITDA of $395 million, plus or minus $28 million

The guidance for the third quarter is based on the current business environment, including the impact of U.S. import tariffs and the imposition of retaliatory actions taken by other countries up through but not including the date of this release. The Company will continue to monitor and adapt to changes in the business environment as needed.

Conference Call Details

A conference call with management will be held on Thursday, August 6, 2026 at 8:30 a.m. (Eastern Time). To participate in the call by phone, participants should visit the Investor Relations section of MKS’ website at investor.mks.com and click on Events & Presentations, where you will be able to register online and receive dial-in details. We encourage participants to register and dial in to the conference call at least 15 minutes before the start of the call to ensure a timely connection. A live and archived webcast and related presentation materials will be available on the Investor Relations section of the MKS website.

About MKS Inc.

MKS Inc. (NASDAQ: MKSI) enables technologies that transform our world. We deliver foundational technology solutions to leading edge semiconductor manufacturing, electronics and packaging, and specialty industrial applications. We apply our broad science and engineering capabilities to create instruments, subsystems, systems, process control solutions and specialty chemicals technology that improve process performance, optimize productivity and enable unique innovations for many of the world's leading technology and industrial companies. Our solutions are critical to addressing the challenges of miniaturization and complexity in advanced device manufacturing by enabling increased power, speed, feature enhancement, and optimized connectivity. Our solutions are also critical to addressing ever-increasing performance requirements across a wide array of specialty industrial applications. Additional information can be found at www.mks.com.

Use of Non-GAAP Financial Results

This press release includes financial measures that are not in accordance with U.S. generally accepted accounting principles (“Non-GAAP financial measures”). These Non-GAAP financial measures should be viewed in addition to, and not as a substitute for, MKS’ reported results under U.S. generally accepted accounting principles (“GAAP”), and may be different from Non-GAAP financial measures used by other companies. In addition, these Non-GAAP financial measures are not based on any comprehensive set of accounting rules or principles. MKS management believes the presentation of these Non-GAAP financial measures is useful to investors for comparing prior periods and analyzing ongoing business trends and operating results. For further information regarding these Non-GAAP financial measures, please refer to the tables

presenting reconciliations of our Non-GAAP results to our GAAP results and the “Notes on Our Non-GAAP Financial Information” at the end of this press release.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS

This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 regarding the future financial performance, business prospects and growth of MKS Inc. (“MKS,” the “Company,” “our,” or “we”). These statements are only predictions based on current assumptions and expectations. Any statements that are not statements of historical fact (including statements containing the words “will,” “projects,” “intends,” “believes,” “plans,” “anticipates,” “expects,” “estimates,” “forecasts,” “continues” and similar expressions) should be considered forward-looking statements. Actual events or results may differ materially from those in the forward-looking statements set forth herein. Among the important factors that could cause actual events to differ materially from those in the forward-looking statements that we make are the level and terms of our substantial indebtedness and our ability to service such debt; risks related to pursuing, completing, and/or failing to realize the benefits of acquisitions and other strategic transactions critical to our growth strategy; risks related to cybersecurity, data privacy and intellectual property; manufacturing and sourcing risks, including supply chain disruptions, component shortages and price increases, the use of limited, sole source and international suppliers, the relocation of manufacturing operations, and product defects; risks associated with doing business internationally, including geopolitical conflicts, trade compliance, trade protection measures, such as import tariffs by the United States and/or retaliatory actions taken by other countries, regulatory restrictions on our products, components or markets, particularly the semiconductor market, and unfavorable currency exchange and tax rate fluctuations; conditions affecting the markets in which we operate, including intense competition, rapid technological and market changes, dependence on new product development, the ability to anticipate and meet customer demand, fluctuations in capital spending in the semiconductor, electronics manufacturing and automotive industries, and fluctuations in sales to our major customers; disruptions or delays from third-party service providers upon which our operations may rely; risks associated with the attraction and retention of key personnel; potential fluctuations in quarterly results; volatility of stock price; risks associated with chemical manufacturing and environmental regulation compliance; risks associated with artificial intelligence (“AI”); financial and legal risk management; and the other important factors described under the heading “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025 filed with the U.S. Securities and Exchange Commission and any subsequent Quarterly Reports on Form 10-Q. MKS is under no obligation to, and expressly disclaims any obligation to, update or alter these forward-looking statements, whether as a result of new information, future events or otherwise, even if subsequent events cause our views to change, after the date

of this press release. Amounts reported in this press release are preliminary and subject to finalization prior to the filing of our Quarterly Report on Form 10-Q for the quarter ended June 30, 2026.

Company Contact:

Paretosh Misra

Vice President, Investor Relations

Telephone: (978) 284-4705

Email: paretosh.misra@mks.com

MKS Inc.

Unaudited Consolidated Statements of Operations

(In millions, except per share data)

Three Months Ended

Six Months Ended

June 30,

March 31,

June 30,

2026

2025

2026

2025

Net revenues:

Products

1,104

954

848

2,058

1,668

Services

144

124

125

268

242

Total net revenues

1,248

1,078

973

2,326

1,910

Cost of revenues:

Products

582

514

463

1,096

900

Services

129

113

Total cost of revenues (exclusive of amortization shown separately below)

653

571

520

1,225

1,013

Gross profit

595

507

453

1,101

897

Research and development

157

145

Selling, general and administrative

200

190

175

389

361

Restructuring and other

Legal settlement

—

Fees and expenses related to debt activities

—

Amortization of intangible assets

125

122

Income from operations

251

149

135

400

246

Interest income

)

Interest expense

108

Loss on extinguishment of debt

Other (income) expense, net

)

Income before income taxes

213

102

314

131

Provision for income taxes

Net income

175

258

114

Net income per common share:

Basic

2.59

1.24

0.92

3.83

1.69

Diluted

2.41

1.18

0.92

3.60

1.69

Cash dividends per common share

0.25

0.22

0.50

0.44

Weighted average common shares outstanding:

Basic

67.6

67.4

67.2

67.5

67.3

Diluted

72.7

71.1

67.4

71.9

67.5

MKS Inc.

Unaudited Consolidated Balance Sheets

(In millions)

June 30,

December 31,

2026

2025

ASSETS

Cash and cash equivalents

611

675

Trade accounts receivable, net

830

651

Inventories

1,033

921

Other current assets

300

263

Total current assets

2,774

2,510

Property, plant and equipment, net

798

810

Right-of-use assets

265

270

Goodwill

2,580

2,574

Intangible assets, net

2,015

2,140

Other assets

509

492

Total assets

8,941

8,796

LIABILITIES AND STOCKHOLDERS' EQUITY

Short-term debt

1,399

Accounts payable

534

407

Other current liabilities

491

469

Total current liabilities

2,424

927

Long-term debt, net

2,544

4,150

Non-current deferred taxes

438

474

Non-current accrued compensation

147

149

Non-current lease liabilities

243

246

Other non-current liabilities

157

131

Total liabilities

5,953

6,077

Stockholders' equity:

Common stock

—

Additional paid-in capital

2,093

2,101

Retained earnings

936

711

Accumulated other comprehensive loss

(41

)

(93

)

Total stockholders' equity

2,988

2,719

Total liabilities and stockholders' equity

8,941

8,796

MKS Inc.

Unaudited Consolidated Statements of Cash Flows

(In millions)

Three Months Ended

Six Months Ended

June 30,

March 31,

June 30,

2026

2025

2026

2025

Cash flows from operating activities:

Net income

175

258

114

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

171

172

Unrealized (gain) loss on foreign currency and derivative instruments

)

—

)

Amortization of debt issuance costs and original issue discounts

Loss on extinguishment of debt

Stock-based compensation

Provision for excess and obsolete inventory

Deferred income taxes

(20

)

(24

)

(44

)

(44

)

(80

)

Other

)

—

Changes in operating assets and liabilities

(18

)

(134

)

(151

)

Net cash provided by operating activities

243

165

296

306

Cash flows from investing activities:

Purchases of investments

—

)

—

Proceeds from sale of long-lived assets

—

Purchases of property, plant and equipment

(55

)

(25

)

(29

)

(79

)

(47

)

Net cash used in investing activities

(55

)

(25

)

(27

)

(80

)

(45

)

Cash flows from financing activities:

Repurchase of common stock

—

(45

)

Proceeds from borrowings

—

1,192

—

1,192

—

Payments of borrowings

(104

)

(1,274

)

(113

)

(1,378

)

(225

)

Payments of deferred financing fees

—

(22

)

—

(22

)

—

Dividend payments

(17

)

(17

)

(15

)

(34

)

(30

)

Net payments related to employee stock awards

(26

)

(16

)

—

(42

)

Other financing activities

)

—

)

Net cash used in financing activities

(148

)

(137

)

(129

)

(285

)

(309

)

Effect of exchange rate changes on cash and cash equivalents

Increase (decrease) in cash and cash equivalents

(106

)

(64

)

(40

)

Cash and cash equivalents at beginning of period

569

675

655

675

714

Cash and cash equivalents at end of period

611

569

674

611

674

The following supplemental Non-GAAP earnings information is presented to aid in understanding MKS’ operating results:

MKS Inc.

Schedule Reconciling Selected Non-GAAP Financial Measures

(In millions, except per share data)

Three Months Ended

Six Months Ended

June 30,

March 31,

June 30,

2026

2025

2026

2025

Net income

175

258

114

Restructuring and other

Legal settlement

—

Amortization of intangible assets

125

122

Loss on extinguishment of debt

Amortization of debt issuance costs

Loss from de-designation of interest rate hedges

—

Fees and expenses related to debt activities

—

Tax effect of Non-GAAP adjustments

(18

)

(23

)

(17

)

(42

)

(38

)

Non-GAAP net earnings

232

157

119

389

235

Non-GAAP net earnings per diluted share

3.30

2.30

1.77

5.61

3.48

Weighted average diluted shares outstanding

72.7

71.1

67.4

71.9

67.5

Convertible debt capped calls

(2.4

)

(2.9

)

—

(2.7

)

—

Non-GAAP weighted average diluted shares outstanding

70.3

68.2

67.4

69.2

67.5

Net cash provided by operating activities

243

165

296

306

Purchases of property, plant and equipment

(55

)

(25

)

(29

)

(79

)

(47

)

Free cash flow

188

136

217

259

Operating expenses

344

358

318

701

651

Restructuring and other

Legal settlement

—

Amortization of intangible assets

125

122

Fees and expenses related to debt activities

—

Non-GAAP operating expenses

275

271

251

547

505

Income from operations

251

149

135

400

246

Operating margin

20.1

13.8

13.9

17.2

12.9

Restructuring and other

Legal settlement

—

Amortization of intangible assets

125

122

Fees and expenses related to debt activities

—

Non-GAAP income from operations

320

235

202

555

392

Non-GAAP operating margin

25.6

21.8

20.8

23.9

20.5

Interest expense, net

101

Amortization of debt issuance costs

Loss from de-designation of interest rate hedges

—

Non-GAAP interest expense, net

Net income

175

258

114

Interest expense, net

101

Other (income) expense, net

)

Provision for income taxes

Depreciation

Amortization of intangible assets

125

122

Stock-based compensation

Restructuring and other

Legal settlement

—

Loss on extinguishment of debt

Fees and expenses related to debt activities

—

Adjusted EBITDA

358

277

240

635

476

Adjusted EBITDA margin

28.6

25.7

24.7

27.3

24.9

MKS Inc.

Schedule Reconciling Selected Non-GAAP Financial Measures

(In millions, except per share data)

Three Months Ended June 30, 2026

Three Months Ended March 31, 2026

Income Before

Income Taxes

Provision

for Income Taxes

Effective

Tax Rate

Income

Before

Income Taxes

Provision

for Income Taxes

Effective

Tax Rate

GAAP

213

17.8%

102

17.7%

Restructuring and other

—

Legal settlement

—

Amortization of intangible assets

—

Loss on extinguishment of debt

—

Amortization of debt issuance costs

—

Loss from de-designation of interest rate hedges

—

Fees and expenses related to debt activities

—

Tax effect of Non-GAAP adjustments

—

Non-GAAP

288

19.6%

198

20.9%

Three Months Ended June 30, 2025

Income Before

Income Taxes

Provision

for Income Taxes

Effective

Tax Rate

GAAP

13.6%

Restructuring and other

—

Amortization of intangible assets

—

Loss on extinguishment of debt

—

Amortization of debt issuance costs

—

Fees and expenses related to debt activities

—

Tax effect of Non-GAAP adjustments

—

Non-GAAP

146

18.2%

Six Months Ended June 30, 2026

Six Months Ended June 30, 2025

Income Before

Income Taxes

Provision

for Income Taxes

Effective

Tax Rate

Income

Before

Income Taxes

Provision

for Income Taxes

Effective

Tax Rate

GAAP

314

17.8%

131

13.0%

Restructuring and other

—

Legal settlement

—

Amortization of intangible assets

125

—

122

—

Loss on extinguishment of debt

—

Amortization of debt issuance costs

—

Loss from de-designation of interest rate hedges

—

Fees and expenses related to debt activities

—

Tax effect of Non-GAAP adjustments

—

Non-GAAP

486

20.1%

290

19.1%

MKS Inc.

Schedule Reconciling Selected Non-GAAP Financial Measures - Q3’26 Guidance

(In millions, except per share data)

Three Months Ending September 30, 2026

$ Amount

Per Share

GAAP net income and net income per share

201

2.73

Restructuring and other

Amortization of intangible assets

Loss on extinguishment of debt

Amortization of debt issuance costs

Tax effect of Non-GAAP adjustments

(19

)

Non-GAAP net earnings and net earnings per share

257

3.58

Weighted average diluted shares

73.6

Convertible debt capped calls

(1.8

)

Non-GAAP weighted average diluted shares

71.8

GAAP operating expenses

346

Restructuring and other

)

Amortization of intangible assets

(61

)

Non-GAAP operating expenses

280

GAAP net income

201

Interest expense, net

Provision for income taxes

Depreciation

Restructuring and other

Amortization of intangible assets

Stock-based compensation

Loss on extinguishment of debt

Adjusted EBITDA

395

MKS Inc.

Notes on Our Non-GAAP Financial Information

Non-GAAP financial measures adjust GAAP financial measures for the items listed below. These Non-GAAP financial measures should be viewed in addition to, and not as a substitute for, MKS’ reported GAAP results, and may be different from Non-GAAP financial measures used by other companies. In addition, these Non-GAAP financial measures are not based on any comprehensive set of accounting rules or principles. MKS management believes the presentation of these Non-GAAP financial measures is useful to investors for comparing prior periods and analyzing ongoing business trends and operating results. Totals presented may not sum and percentages may not recalculate using figures presented due to rounding.

Restructuring and other includes incremental expenses incurred in connection with restructuring programs and other strategic initiatives, primarily related to changes in business and/or cost structure. Such costs may include third-party services, one-time termination benefits, facility-related costs, contract termination fees and other items that have no direct correlation to our future business operations.

Legal settlement includes charges related to the resolution of legal matters.

Amortization of intangible assets includes non-cash amortization expense associated with intangible assets acquired in acquisitions.

Loss on extinguishment of debt includes the non-cash write-off of unamortized debt issuance costs and original issue discount costs incurred from voluntary prepayments, refinancings and/or repricings of our term loan facility.

Amortization of debt issuance costs includes non-cash additional interest expense related to the amortization of debt issuance costs associated with our debt.

Loss from de-designation of interest rate hedges includes a cash loss from the de-designation of certain interest rate hedges in connection with the voluntary prepayment of the USD term loan B.

Fees and expenses related to debt activities includes direct third-party costs related to repricings or refinancings of our term loan facility and the issuance of our €1.0 billion of senior notes due 2034 in February 2026.

Convertible debt capped calls includes the antidilutive impact of the capped call transactions entered into in connection with the issuance of $1.4 billion of convertible senior notes in May 2024. The capped calls are designed to reduce potential dilution to the Company’s common stock and/or offset cash payments in excess of the principal upon conversion of the notes, subject to a cap. Because the capped calls are excluded from GAAP diluted share calculations, GAAP and Non‑GAAP diluted share counts will differ.

Tax effect of Non-GAAP adjustments includes the impact of Non-GAAP adjustments that are tax effected at applicable statutory rates resulting in a difference between the GAAP and Non-GAAP tax rates.

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v3.26.1

Document And Entity Information

Aug. 05, 2026

Cover [Abstract]

Document Type

8-K

Amendment Flag

false

Document Period End Date

Aug. 05, 2026

Entity Registrant Name

MKS INC.

Entity Central Index Key

0001049502

Entity Emerging Growth Company

false

Entity File Number

000-23621

Entity Incorporation, State or Country Code

Entity Tax Identification Number

04-2277512

Entity Address, Address Line One

2 Tech Drive

Entity Address, City or Town

Andover

Entity Address, State or Province

Entity Address, Postal Zip Code

01810

City Area Code

978

Local Phone Number

645-5500

Entity Information, Former Legal or Registered Name

Not Applicable

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock, no par value

Trading Symbol

MKSI

Security Exchange Name

NASDAQ

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

Period Type:

duration

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

Former Legal or Registered Name of an entity

+ References

No definition available.

+ Details

Name:

dei_EntityInformationFormerLegalOrRegisteredName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration