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

 4/29/11  Nelson Gregory L                  3          Officer²    2:7K   Ameren Illinois Co.               Ameren Illinois Co.      
 4/29/11  Nelson Gregory L                  3          Officer²    2:6K   Union Electric Co.                Union Electric Co.       
 4/29/11  Nelson Gregory L                  3          Officer²    2:8K   Ameren Corp.                      Ameren Corp.             
 4/21/11  Ameren Illinois Co.               8-K:5,9     4/21/11    2:83K                                    Donnelley … Solutions/FA 
          Ameren Corp.
          Union Electric Co.
  3/9/11  Ameren Corp.                      DEF 14A     4/21/11    1:1.3M                                   Donnelley … Solutions/FA 
  3/9/11  Ameren Illinois Co.               DEF 14C     4/21/11    1:884K                                   Donnelley … Solutions/FA 
  3/9/11  Union Electric Co.                DEF 14C     4/21/11    1:892K                                   Donnelley … Solutions/FA 
 2/23/11  Ameren Corp.                      PRE 14A     4/21/11    1:1.3M                                   Donnelley … Solutions/FA 

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¹	Filing/Form Types:
	3	Initial Statement of Beneficial Ownership of Securities by an Insider — Form 3 { The Filer is an Insider² of the Issuer }.
	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 }.
	DEF 14A	Definitive Proxy Statement — Schedule 14A.
	DEF 14C	Definitive Proxy Info Statement — Schedule 14C.
	PRE 14A	Preliminary Proxy Statement — Schedule 14A.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.