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    <title>MKS INSTRUMENTS INC (MKSI) - Company Filings</title>
    <link>https://www.developersdigest.tech/markets/mksi/filings</link>
    <description>Latest company filings for MKS INSTRUMENTS INC (MKSI) - annual reports, quarterly reports, major events, and insider trades, newest first.</description>
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    <lastBuildDate>Thu, 09 Jul 2026 23:51:30 GMT</lastBuildDate>
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      <title><![CDATA[MKSI: Insider sale notice (144)]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Insider sale notice (144) on 2026-05-22.]]></description>
      <pubDate>Fri, 22 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Insider sale notice (144)]]></title>
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      <pubDate>Fri, 22 May 2026 12:00:00 GMT</pubDate>
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      <pubDate>Tue, 19 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Insider sale notice (144)]]></title>
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      <pubDate>Mon, 18 May 2026 12:00:00 GMT</pubDate>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Insider trade (4) on 2026-05-15.]]></description>
      <pubDate>Fri, 15 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Insider sale notice (144)]]></title>
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      <pubDate>Thu, 14 May 2026 12:00:00 GMT</pubDate>
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      <pubDate>Thu, 14 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Insider sale notice (144)]]></title>
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      <pubDate>Wed, 13 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Major company event (8-K)]]></title>
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      <pubDate>Tue, 12 May 2026 12:00:00 GMT</pubDate>
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      <pubDate>Tue, 12 May 2026 12:00:00 GMT</pubDate>
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      <pubDate>Tue, 12 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Insider sale notice (144)]]></title>
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      <pubDate>Mon, 11 May 2026 12:00:00 GMT</pubDate>
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      <pubDate>Mon, 11 May 2026 12:00:00 GMT</pubDate>
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    <item>
      <title><![CDATA[MKSI: Employee stock plan (S-8)]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Employee stock plan (S-8) on 2026-05-11.]]></description>
      <pubDate>Mon, 11 May 2026 12:00:00 GMT</pubDate>
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    <item>
      <title><![CDATA[MKSI: Quarterly report (10-Q)]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Quarterly report (10-Q) on 2026-05-07.]]></description>
      <pubDate>Thu, 07 May 2026 12:00:00 GMT</pubDate>
      <category>10-Q</category>
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      <title><![CDATA[MKSI: Major company event (8-K)]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Major company event (8-K) on 2026-05-06.]]></description>
      <pubDate>Wed, 06 May 2026 12:00:00 GMT</pubDate>
      <category>8-K</category>
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    <item>
      <title><![CDATA[MKSI: SCHEDULE 13G/A]]></title>
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      <pubDate>Wed, 06 May 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G/A</category>
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      <title><![CDATA[MKSI: SCHEDULE 13G]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a SCHEDULE 13G (SCHEDULE 13G) on 2026-04-30.]]></description>
      <pubDate>Thu, 30 Apr 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: SCHEDULE 13G]]></title>
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      <pubDate>Wed, 29 Apr 2026 12:00:00 GMT</pubDate>
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      <pubDate>Mon, 20 Apr 2026 12:00:00 GMT</pubDate>
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      <pubDate>Thu, 16 Apr 2026 12:00:00 GMT</pubDate>
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      <pubDate>Mon, 06 Apr 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Annual report to shareholders (ARS)]]></title>
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      <pubDate>Tue, 31 Mar 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Proxy materials (DEFA14A)]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Proxy materials (DEFA14A) on 2026-03-31.]]></description>
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      <title><![CDATA[MKSI: Proxy statement (DEF 14A)]]></title>
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      <description><![CDATA[MKS INSTRUMENTS INC filed a Proxy statement (DEF 14A) on 2026-03-31.]]></description>
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      <title><![CDATA[MKSI: SCHEDULE 13G/A]]></title>
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      <pubDate>Fri, 27 Mar 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: PRE 14A]]></title>
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      <pubDate>Fri, 13 Mar 2026 12:00:00 GMT</pubDate>
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      <pubDate>Mon, 09 Mar 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[MKSI: Annual report (10-K)]]></title>
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