183 filings
Page 4 of 10
8-K
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31 May 22
Submission of Matters to a Vote of Security Holders
4:26pm
8-K
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29 Apr 22
Departure of Directors or Certain Officers
5:06pm
8-K
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28 Apr 22
Ecovyst Announces New Chief Executive Officer and New Chairman of the Board of Directors, Reports First Quarter
4:50pm
8-K
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25 Feb 22
Ecovyst Reports Strong Fourth Quarter and Full Year 2021 Results as Growth Momentum Boosted Profitability
6:17am
S-8
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14 Jan 22
Registration of securities for employees
4:59pm
8-K
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23 Nov 21
Entry into a Material Definitive Agreement
4:23pm
424B7
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19 Nov 21
Prospectus with selling stockholder info
4:11pm
424B7
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16 Nov 21
Prospectus with selling stockholder info
4:31pm
8-K
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16 Nov 21
Other Events
4:08pm
8-K
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9 Nov 21
Upgrading 2021 Financial Outlook on Strong Performance
6:28am
8-K
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14 Sep 21
Regulation FD Disclosure
7:55am
8-K
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5 Aug 21
Board Declares Special Dividend of $3.20 per share
6:16am
8-K/A
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4 Aug 21
Departure of Directors or Certain Officers
4:13pm
8-K
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3 Aug 21
Termination of a Material Definitive Agreement
4:08pm
8-K
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23 Jul 21
PQ Group Holdings Announces Date and Details for Corporate Name Change to Ecovyst Inc. and Second Quarter 2021 Earnings Conference Call
6:15am