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MKSI SEC Filings

SEC filings for MKSI. Annual and quarterly reports, 8-K events, Form 4 insider filings and 13D/G stake disclosures.

All10-K10-Q8-KProxyForm 413D/GLast 12 months
FormFiledAccession
10-QNov 5, 2026EDGAR
8-KNov 4, 2026EDGAR
4Lee John Tseng-ChungPresident & CEONov 3, 2026EDGAR
8-KOct 19, 2026EDGAR
SC 13G/AamendedJPMORGAN CHASE & COSep 3, 2026EDGAR
4Mora ElizabethSep 2, 2026EDGAR
4Lee John Tseng-ChungPresident & CEOAug 17, 2026EDGAR
8-KAug 6, 2026EDGAR
10-QAug 6, 2026EDGAR
4Williams John EdwardEVP & GM, PSDAug 4, 2026EDGAR
SC 13G/AamendedVictory Capital Management, Inc.Jul 24, 2026EDGAR
SC 13GJPMORGAN CHASE & COJul 17, 2026EDGAR
4Schreiner James AlanEVP & COOJun 17, 2026EDGAR
4Schreiner James AlanEVP & COOJun 11, 2026EDGAR
4McCarthy Michelle MSVP & Chief Accounting OfficerJun 8, 2026EDGAR
4Henry David PhilipEVP, Global Str Mktg & GM, MSDJun 2, 2026EDGAR
4Mora ElizabethJun 2, 2026EDGAR
4Donahue Joseph BMay 28, 2026EDGAR
4COLELLA GERALD GMay 28, 2026EDGAR
4Henry David PhilipEVP, Global Str Mktg & GM, MSDMay 28, 2026EDGAR
4Mayampurath RamakumarEVP & CFOMay 26, 2026EDGAR
4Lee John Tseng-ChungPresident & CEOMay 26, 2026EDGAR
4CANNONE PETER IIIMay 19, 2026EDGAR
4Moloney Jacqueline FMay 15, 2026EDGAR
4Moloney Jacqueline FMay 14, 2026EDGAR
8-KMay 13, 2026EDGAR
4Taranto Eric RobertEVP & GM, VSDMay 12, 2026EDGAR
4Moloney Jacqueline FMay 12, 2026EDGAR
4JABRE WISSAM GMay 12, 2026EDGAR
4Mora ElizabethMay 12, 2026EDGAR
4Burke Kathleen FlahertyEVP, GC & SecretaryMay 12, 2026EDGAR
4Donahue Joseph BMay 12, 2026EDGAR
4CANNONE PETER IIIMay 12, 2026EDGAR
4Batra RajMay 12, 2026EDGAR
4COLELLA GERALD GMay 12, 2026EDGAR
8-KMay 7, 2026EDGAR
10-QMay 7, 2026EDGAR
SC 13G/AamendedFMR LLC and 1 other reporting personMay 6, 2026EDGAR
SC 13GVanguard Capital ManagementApr 30, 2026EDGAR
SC 13GVanguard Portfolio ManagementApr 29, 2026EDGAR
4Williams John EdwardEVP & GM, PSDApr 20, 2026EDGAR
4McCarthy Michelle MSVP & Chief Accounting OfficerApr 16, 2026EDGAR
8-KApr 6, 2026EDGAR
SC 13G/AamendedThe Vanguard GroupMar 27, 2026EDGAR
4Moloney Jacqueline FMar 13, 2026EDGAR
4Taranto Eric RobertEVP & GM, VSDMar 9, 2026EDGAR
4Mora ElizabethMar 3, 2026EDGAR
4Schreiner James AlanEVP & COOFeb 25, 2026EDGAR
4COLELLA GERALD GFeb 25, 2026EDGAR
10-KFeb 25, 2026EDGAR
4CANNONE PETER IIIFeb 24, 2026EDGAR
4Taranto Eric RobertEVP & GM, VSDFeb 24, 2026EDGAR
4Henry David PhilipEVP, Global Str Mktg & GM, MSDFeb 24, 2026EDGAR
4McCarthy Michelle MVP & Chief Accounting OfficerFeb 24, 2026EDGAR
4Moloney Jacqueline FFeb 24, 2026EDGAR
4Williams John EdwardEVP & GM, PSDFeb 24, 2026EDGAR
4Burke Kathleen FlahertyEVP, GC & SecretaryFeb 24, 2026EDGAR
4Lee John Tseng-ChungPresident & CEOFeb 24, 2026EDGAR
4Taranto Eric RobertEVP & GM, VSDFeb 19, 2026EDGAR
4Henry David PhilipEVP, Global Str Mktg & GM, MSDFeb 19, 2026EDGAR
4Schreiner James AlanEVP & COOFeb 19, 2026EDGAR
4Williams John EdwardEVP & GM, PSDFeb 19, 2026EDGAR
4Mayampurath RamakumarEVP & CFOFeb 19, 2026EDGAR
4Burke Kathleen FlahertyEVP, GC & SecretaryFeb 19, 2026EDGAR
4Lee John Tseng-ChungPresident & CEOFeb 19, 2026EDGAR
8-KFeb 18, 2026EDGAR
SC 13G/AamendedT. Rowe Price Associates, Inc.Feb 17, 2026EDGAR
SC 13GInvesco Ltd.Feb 13, 2026EDGAR
8-KFeb 5, 2026EDGAR
8-KJan 29, 2026EDGAR
8-KJan 21, 2026EDGAR
4Mora ElizabethDec 3, 2025EDGAR
4Mayampurath RamakumarEVP & CFONov 19, 2025EDGAR

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Source: SEC EDGAR.