As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 4/13/21  Advanced Emissions Solutions, Inc 8-A12B/A               1:31K                                                             
 4/13/21  Advanced Emissions Solutions, Inc PRE 14A    12/31/20    1:5M                                                              
 4/13/21  Advanced Emissions Solutions, Inc 8-K:1,3,5,9  4/8/21   13:210K                                                            

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¹	Filing/Form Types:
	8-A12B	Registration Statement for a Class of Securities — Form 8-A.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
	PRE 14A	Preliminary Proxy Statement — Schedule 14A.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.