<PAGE>
AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 23, 1999
Registration Statement No. 333-43743
________________________________________________________________________________
________________________________________________________________________________
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
AMENDMENT NO. 1
(POST-EFFECTIVE)
to
FORM S-8
Registration Statement
Under The
Securities Act Of 1933
______________________________
AMEREN CORPORATION
(Exact name of registrant as specified in its charter)
Missouri 43-1723446
(State or other jurisdiction of (I.R.S. Employer
incorporation or organization) Identification No.)
1901 Chouteau Avenue
St. Louis, Missouri 63103
(Address, including zip code, of principal executive offices)
______________________________
CENTRAL ILLINOIS PUBLIC SERVICE COMPANY EMPLOYEE LONG-TERM SAVINGS PLAN
CENTRAL ILLINOIS PUBLIC SERVICE COMPANY EMPLOYEE LONG-TERM SAVINGS PLAN - IUOE
LOCAL NO. 148
CENTRAL ILLINOIS PUBLIC SERVICE COMPANY EMPLOYEE LONG-TERM SAVINGS PLAN - IBEW
LOCAL NO. 702
(Full titles of the plans)
DONALD E. BRANDT, Senior Vice President, Finance
STEVEN R. SULLIVAN, Vice President, General Counsel and Secretary
1901 Chouteau Avenue, St. Louis, Missouri 63103
(314) 621-3222
(Names, address and telephone number,including area code, of agents for service)
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________________________________________________________________________________
________________________________________________________________________________
Removal from Registration of Unsold Securities. The Central Illinois Public
Service Company Employee Long-Term Savings Plan (the "Plan") has been merged
into another plan. Of the 200,000 shares of Common Stock, $.01 par value
(including related plan interests), registered with the Securities and Exchange
Commission for offer and sale under the Plan, 112,990 shares have not been and
will not be sold; accordingly Ameren Corporation hereby removes from
registration such shares of Common Stock (including related plan interests).
Following such removal, the number of shares registered under this Registration
Statement is as follows:
|-----------------------------------------------------|------------------------|
| | |
| Title of securities registered | Amount Registered |
|-----------------------------------------------------|------------------------|
| | |
|Common Stock, $.01 par value, including related plan | |
|interests - Employee Long-Term Savings Plan | 87,010 shares* |
|-----------------------------------------------------|------------------------|
| | |
|Common Stock, $.01 par value, including related plan | |
|interests- Employee Long-Term Savings Plan IUOE Local| |
|No. 148 | 200,000 shares |
|-----------------------------------------------------|------------------------|
| | |
|Common Stock, $.01 par value, including related plan | |
|interests - Employee Long-Term Savings Plan | |
|IBEW Local No. 702 | 200,000 shares |
|-----------------------------------------------------|------------------------|
| | |
| | |
| Total | 487,010 shares |
|-----------------------------------------------------|------------------------|
* Shares previously sold under the Plan.
SIGNATURES
The Registrant. Pursuant to the requirements of the Securities Act of 1933,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Amendment No. 1 (Post-Effective) to Registration Statement to be signed on its
behalf by the undersigned thereunto duly authorized, in the City of St. Louis,
State of Missouri, on the 23rd day of November, 1999.
AMEREN CORPORATION
By /s/Donald E. Brandt
---------------------
DONALD E. BRANDT
Senior Vice President, Finance
<PAGE>
The Plans. Pursuant to the requirements of the Securities Act of 1933, the
persons who administer the undersigned employee benefit plans have duly caused
this Amendment No. 1 (Post-Effective) to Registration Statement to be signed on
their behalf by the undersigned thereunto duly authorized, in the City of St.
Louis, State of Missouri, on the 23rd day of November, 1999.
CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
EMPLOYEE LONG-TERM SAVINGS PLAN
CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
EMPLOYEE LONG-TERM SAVINGS PLAN - IUOE
LOCAL NO. 148
CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
EMPLOYEE LONG-TERM SAVINGS PLAN - IBEW
LOCAL NO. 702
By /s/ Donald E. Brandt
----------------------
DONALD E. BRANDT
Senior Vice President, Finance
Ameren Corporation
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