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MKS Instruments Inc. 
 MA
  SEC # 1049502

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2,231  SEC Filings
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  from  11/14/97  to  3/27/24  (Yesterday)

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  Filer / Offerer   Owner / Insider   Issuer / Subject Company   Filing Agent   
 
Most-Recent Filing:    ‘ARS’ — Annual Report to Security Holders — for 12/31/23 — Filed as:  Filer / Offerer 
 
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notifications of all
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Filings
involving  MKS Instruments Inc. 

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Forms
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, Documents
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& Exhibits
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 in  477 Filings
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 Filed as:  Filer / Offerer  or  Owner / Insider


        
Latest Filing  Type    Category    Description        Documents
     
3/27/24 New Document this Past Month!ARSUpdate:  Annual Reports to Security Holders  New Document this Past Month! 12
3/27/24 New Document this Past Month!DEFA14AProxy:  Definitive Additional Proxy Soliciting Materials — Schedule 14A  New Document this Past Month! 13
3/27/24 New Document this Past Month!DEF 14AProxy:  Definitive Proxy Statements — Schedule 14A  New Document this Past Month!  — Financial Reports
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25
3/1/24 New Document this Past Month!EFFECTSEC:  SEC Notice of Effectiveness  New Document this Past Month! 1
2/27/2410-KUpdate:  Annual Reports — Form 10-K — Financial Reports
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24
2/21/24POS AMRegistration:  Post-Effective Amendment of a Registration Statement1
2/13/248-KUpdate:  Current Reports — Form 8-K — Press Releases
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& Conference Calls
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 — Financial Reports
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211

8-K Items: 
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2/13/24
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  Business & Operations: 
Entry into a Material Definitive Agreement — Item 1.01 — ‘EX-10’
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31
8/17/22 OLD"Termination of a Material Definitive Agreement — Item 1.02  OLD  — ‘EX-10’
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5
8/17/22 OLD
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  Financial Info: 
Completion of Acquisition or Disposition of Assets — Item 2.01  OLD  — ‘EX-2’
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3
2/7/24"Results of Operations and Financial Condition — Item 2.02 — Financial Reports
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84
2/13/24"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant — Item 2.03 — ‘EX-10’
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11
4/3/09 OLD"Cost Associated with Exit or Disposal Activities — Item 2.05  OLD  — ‘EX-2’
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2
8/17/22 OLD
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  Securities & Trading: 
Unregistered Sales of Equity Securities — Item 3.02  OLD  — ‘EX-1’
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1
2/8/24
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  Governance & Management: 
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers — Item 5.02 — List of Directors & Officers
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41
5/6/14 OLD"Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year — Item 5.03  OLD  — ‘EX-3’
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1
11/1/19 OLD"Amendments to the Registrant’s Code of Ethics, or Waiver of a Provision of the Code of Ethics — Item 5.05  OLD  — ‘EX-14’
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1
5/18/23"Submission of Matters to a Vote of Security Holders — Item 5.0715
1/22/24
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  Disclosures: 
Regulation FD Disclosure — Item 7.01 — ‘EX-99’
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21
6/5/23
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  Events: 
Other Events — Item 8.0126
2/13/24
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  Financials: 
Financial Statements and Exhibits — Item 9.01 — Financial Reports
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157

11/8/2310-QUpdate:  Quarterly Reports — Form 10-Q — Financial Reports
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75
6/5/23424B7Registration:  Prospectuses – Selling Security Holders – Info Previously Omitted2
5/25/23SDUpdate:  Specialized Disclosure Reports re: Uses of Conflict Minerals — Form SD10
2/27/23 OLDNT 10-KUpdate:  Notice of a Late Filing of a Form 10-K Annual Report — Form 12b-25  OLD 1
8/24/22 OLDS-3ASRRegistration:  Automatic Shelf Registration Statement by a Well-Known Issuer — Form S-3  OLD 1
5/10/22 OLDS-8Registration:  Registration Statements – Securities for Certain Employee Benefit Plans — Form S-8  OLD 19
3/8/21 OLD425Registration:  Prospectuses and Communications – Mergers  OLD 8
12/14/18 OLDDFAN14AProxy:  Definitive Additional Non-Management Proxy Soliciting Materials — Schedule 14A  OLD 7
4/28/17 OLDCORRESPComment:  Comment-Response and Other Letters to the SEC  [ a.k.a. COVER ]  OLD  — All Correspondence with the SEC
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12
1/5/17 OLDCT ORDERSEC:  SEC Confidential Treatment Orders  OLD 22
9/1/09 OLDSC TO-IOwnership:  Tender-Offer Statements by Issuers — Schedule TO  OLD 6
3/11/05 OLDPRE 14AProxy:  Preliminary Proxy Statements — Schedule 14A  OLD 3
7/28/04 OLDREGDEXRegistration:  Notices of Exempt Offerings of Securities — Form D  OLD 3
1/15/04 OLD424B5Registration:  Prospectuses – Primary Offerings and Shelf Securities – New Facts or Events  OLD 2
10/16/03 OLDS-3Registration:  Registration Statements – Securities for Transactions — Form S-3  OLD 3
12/4/01 OLDDEFM14AProxy:  Definitive Proxy Statement – Merger or Acquisition — Schedule 14A  OLD 1
11/21/01 OLDPREM14AProxy:  Preliminary Proxy Statement – Merger or Acquisition — Schedule 14A  OLD 1
4/2/01 OLD10-K405Update:  Annual Report — Reg. S-K – Item 405 — Form 10-K  OLD 1
12/13/00 OLDS-4Registration:  Registration Statements – Securities for Mergers — Form S-4  OLD 2
10/11/00 OLDSC 13DOwnership:  Statement of Acquisition of Beneficial Ownership by an “Active” Investor — Schedule 13D  OLD 1
3/30/99 OLD424B1Registration:  Prospectus – Info Previously Omitted  OLD 1
3/23/99 OLDS-1Registration:  Registration Statements (General Form) — Form S-1  OLD 7
3/2/99 OLD8-A12GRegistration:  Registration Statements for Certain Classes of Securities — Form 8-A  OLD 2
11/18/98 OLDRWRegistration:  Registration Withdrawal Requests  OLD 2

General Exhibits: 
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2/27/24EX-97Clawback Policy re: Recovery of Erroneously Awarded Compensation1
2/27/24EX-23Consents of Experts and Counsel74
2/27/24EX-10Material Contracts274
2/27/24EX-21Subsidiaries Lists29
6/5/23EX-5Opinions of Counsel re: Legality26
6/5/23EX-1Underwriting Agreements and Conflict Minerals Reports  (and mislabeled “1st Exhibits”)16
8/24/22 OLDEX-FILING FEESFiling Fees  OLD 2
4/1/22 OLDEX-2Plans of Acquisitions, Reorganizations, Arrangements, Liquidations and Successions  OLD 7
2/28/20 OLDEX-4Instruments, Including Indentures, Defining the Rights of Security Holders  OLD 8
11/1/19 OLDEX-14Code of Ethics  OLD 1
5/6/14 OLDEX-3Articles of Incorporation/Organization and Bylaws  OLD 15
4/2/01 OLDEX-13Annual and Quarterly Reports to Security Holders  OLD 2
11/13/00 OLDEX-8Opinions of Counsel re: Tax Matters  OLD 2

Additional Exhibits: 
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2/7/24EX-99Miscellaneous Exhibits, such as Press Releases — Press Releases
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& Conference Calls
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234

Financials: 
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3/27/24 New Report this Past Month!XML  &  R#IDEA Financial Reports Info  New Report this Past Month!  — Financial Reports
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5,169
3/27/24 New Exhibit this Past Month!EX-101.*XBRL Data  (XBRL Files)  New Exhibit this Past Month! 481
3/27/24 New Exhibit this Past Month!JSONXBRL Instances as JavaScript Object Notation Data  (JSON Files)  New Exhibit this Past Month! 78
3/27/24 New Folder this Past Month!ZIPXBRL Zipped Folders
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  (Folders of XBRL Files)  New Folder this Past Month! 
114
2/27/24EX-31Certifications — §302 – SOA’02166
2/27/24EX-32Certifications — §906 – SOA’0289
2/27/24EXCELIDEA Workbooks of Financial Reports Info — Workbooks of Financial Reports
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120
2/26/16 OLDEX-18Letter re: a Change in Accounting Principles or Practices  OLD 1
11/14/00 OLDEX-27Financial Data Schedules {Pre-XBRL}  OLD  — Financial Reports
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11
11/14/97 OLDEX-11Statement re: the Computation of Earnings Per Share  OLD 1

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3/27/24 New Graphic this Past Month!GRAPHICPhotos, Images and Graphs  New Graphic this Past Month! 884


Forms
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, Documents
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& Exhibits
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 in  1,761 Filings
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 Filed re:  Issuer / Subject Company


        
New Filing!  List all Money Managers that own this Security Issuer:  CUSIP 55306N
 

        
Latest Filing  Type    Category    Description        Documents
     
3/7/24 New Document this Past Month!3Ownership:  Initial Statements of Beneficial Ownership of Securities by Insiders — Form 3  New Document this Past Month! 33
3/4/24 New Document this Past Month!4Ownership:  Statements of Changes in Beneficial Ownership of Securities by Insiders — Form 4  New Document this Past Month! 1,513
3/1/24 New Document this Past Month!144Ownership:  Notices of Proposed Sales of Securities by Insiders — Form 144  New Document this Past Month! 23
2/13/24SC 13GOwnership:  Statements of Acquisitions of Beneficial Ownership by “Passive” Investors — Schedule 13G123
2/6/19 OLD5Ownership:  Annual Statements of Changes in Beneficial Ownership of Securities by Insiders — Form 5  OLD 33
12/14/18 OLDDFAN14AProxy:  Definitive Additional Non-Management Proxy Soliciting Material — Schedule 14A  OLD 1
9/1/09 OLDSC TO-IOwnership:  Tender-Offer Statements by Issuers — Schedule TO  OLD 6
8/20/09 OLDCORRESPComment:  Comment-Response and Other Letters to the SEC  [ a.k.a. COVER ]  OLD  — All Correspondence with the SEC
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2
1/17/07 OLDSC 13DOwnership:  Statements of Acquisitions of Beneficial Ownership by “Active” Investors — Schedule 13D  OLD 16

Letters: 
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5/1/17 OLDLETTERComment and Other Letters from the SEC  [ a.k.a. UPLOAD ]  OLD  — All Correspondence with the SEC13

General Exhibits: 
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3/7/24 New Exhibit this Past Month!EX-24Powers of Attorney  New Exhibit this Past Month! 47
4/6/06 OLDEX-1Underwriting Agreements  (and mislabeled “1st Exhibits”)  OLD 5
2/8/02 OLDEX-3Articles of Incorporation/Organization or Bylaws  OLD 1
2/8/02 OLDEX-4Instrument Defining the Rights of Security Holders  OLD 1
2/8/02 OLDEX-5Opinion of Counsel re: Legality  OLD 1
2/8/02 OLDEX-2Plan of Acquisition, Reorganization, Arrangement, Liquidation or Succession  OLD 1

Additional Exhibits: 
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8/29/22 OLDEX-99Miscellaneous Exhibits, such as Press Releases  OLD 84

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8/20/09 OLDGRAPHICPhotos, Images and Graphs  OLD 52


        

Filings History

Year    # of Filings
In descending order
2024 46
2023 84
2022 77
2021 80
2020 56
2019 57
2018 77
2017 84
2016 100
2015 80
2014 91
2013 83
2012 109
2011 108
2010 108
2009 99
2008 102
2007 155
2006 272
2005 88
2004 86
2003 116
2002 18
2001 19
2000 18
1999 12
1998 4
1997 2

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