Commission

File Number

Exact Name of Registrant as Specified of

Incorporation; Address and Telephone Number

IRS Employer

Identification Number

Ameren Corporation

(Missouri Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222

Union Electric Company

(Missouri Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222

Ameren Illinois Company

(Illinois Corporation)

300 Liberty Street

Peoria, Illinois 61602

(309) 677-5271

Ameren Energy Generating Company

(Illinois Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222

NAMED EXECUTIVE OFFICER

Voss

Lyons

Baxter

Sullivan

Naslund

Cisel

make indemnification mandatory (i.e., changing “may indemnify” to “shall indemnify”), to the extent permitted by law and the By-Laws, for Ameren Missouri directors, officers and employees and to persons who serve as a director or officer of another entity at the request of Ameren Missouri and limit such indemnification by excluding “agents” of Ameren Missouri and persons serving as employees or agents of another entity at the request of Ameren Missouri from the class of indemnitees;

specify that “serving at the request of the Company,” which was not previously defined, shall be established solely (a) by express approval of such service by Ameren’s Nominating and Corporate Governance Committee or (b) by such Committee’s annual review of a list of non-affiliated organizations that Ameren Missouri officers are serving as a director or officer of, so long as such Committee does not notify any such officer that such person is not serving at the request of Ameren Missouri;

provide that indemnification or advancement of expenses by Ameren Missouri to a person serving at the request of Ameren Missouri as a director or officer of another entity shall be secondary to any payments to be received from the other entity for which a person is serving (Ameren Missouri’s By-Laws did not previously include a hierarchy of indemnification payments and expense advancement);

make the advancement of expenses mandatory for all indemnitees who are Ameren Missouri directors or officers or persons serving at the request of Ameren Missouri as a director or officer of another entity upon an undertaking by such person to repay such amounts unless it is ultimately determined that such person was entitled to indemnification by Ameren Missouri (Ameren Missouri’s By-Laws previously provided that any such expense advancement was at the discretion of the Board of Directors (advancement of expenses for indemnitees who serve as an employee of Ameren Missouri continues to be at the discretion of the Board of Directors upon receipt of an undertaking by such employee to repay such amounts unless it is ultimately determined that such person was entitled to indemnification by Ameren Missouri)); and

limit the maximum liability of Ameren Missouri, Ameren and Ameren’s other majority owned subsidiaries for indemnification and advancement of expenses to any person “serving at the request of the Company” under the By-Laws or applicable law for such service to $25 million, except with respect to an employee benefit plan of Ameren Missouri, Ameren or Ameren’s other majority owned subsidiaries (or such plan’s participants or beneficiaries) or as otherwise expressly approved by the Board of Directors (Ameren Missouri’s By-Laws did not previously include an express dollar limit on any such indemnification and advancement of expenses).

limit the indemnification currently provided in the Bylaws or by applicable law to Ameren Illinois directors, officers and employees and to persons who serve as a director or officer of another entity at the request of Ameren Illinois, by excluding “agents” of Ameren Illinois and persons serving as employees or agents of another entity at the request of Ameren Illinois from the class of indemnitees;

specify that “serving at the request of the Company,” which was not previously defined, shall be established solely (a) by express approval of such service by Ameren’s Nominating and Corporate Governance Committee or (b) by such Committee’s annual review of a list of non-affiliated organizations that Ameren Illinois officers are serving as a director or officer of, so long as such Committee does not notify any such officer that such person is not serving at the request of Ameren Illinois;

include a standard required under Illinois law, as recently amended, that persons requesting payment of expenses when successful in defense of any action must have acted in good faith and in a manner he or she reasonably believed to be in and not opposed to the best interests of Ameren Illinois;

include a provision relating to partial indemnification and a right of contribution to the extent permitted by law and public policy, where full and complete indemnification for persons entitled to indemnification under the Bylaws is prohibited by law or public policy;

provide that indemnification or advancement of expenses by Ameren Illinois to a person serving at the request of Ameren Illinois as a director or officer of another entity shall be secondary to any payments to be received from the other entity for which a person is serving (Ameren Illinois’ Bylaws did not previously include a hierarchy of indemnification payments and expense advancement);

make the advancement of expenses mandatory for all indemnitees who are Ameren Illinois directors or officers or persons serving at the request of Ameren Illinois as a director or officer of another entity upon an undertaking by such person to repay such amounts if it is ultimately determined that such person was not entitled to indemnification by Ameren Illinois (Ameren Illinois’ Bylaws previously provided that any such expense advancement was at the discretion of the Board of Directors (advancement of expenses for indemnitees who serve as an employee of Ameren Illinois continues to be at the discretion of the Board of Directors));

limit the requirement that Ameren Illinois notify shareholders of indemnity payments and advances of expenses only to the extent required under Illinois law; and

limit the maximum liability of Ameren Illinois, Ameren and Ameren’s other majority owned subsidiaries for indemnification and advancement of expenses to any person “serving at the request of the Company” under the Bylaws or applicable law for such service to $25 million, except with respect to an employee benefit plan of Ameren Illinois, Ameren and Ameren’s other majority owned subsidiaries (or such plan’s participants or beneficiaries) or as otherwise expressly approved by the Board of Directors (Ameren Illinois’ Bylaws did not previously include an express dollar limit on any such indemnification and advancement of expenses).

limit the indemnification currently provided in the Bylaws or by applicable law to Genco directors, officers and employees and to persons who serve as a director or officer of another entity at the request of Genco, by excluding “agents” of Genco and persons serving as employees or agents of another entity at the request of Genco from the class of indemnitees;

specify that “serving at the request of the Company,” which was not previously defined, shall be established solely (a) by express approval of such service by Ameren’s Nominating and Corporate Governance Committee or (b) by such Committee’s annual review of a list of non-affiliated organizations that Genco officers are serving as a director or officer of, so long as such Committee does not notify any such officer that such person is not serving at the request of Genco;

include a standard required under Illinois law, as recently amended, that persons requesting payment of expenses when successful in defense of any action must have acted in good faith and in a manner he or she reasonably believed to be in and not opposed to the best interests of Genco;

include a provision relating to partial indemnification and a right of contribution to the extent permitted by law and public policy, where full and complete indemnification for persons entitled to indemnification under the Bylaws is prohibited by law or public policy;

provide that indemnification or advancement of expenses by Genco to a person serving at the request of Genco as a director or officer of another entity shall be secondary to any payments to be received from the other entity for which a person is serving (Genco’s Bylaws did not previously include a hierarchy of indemnification payments and expense advancement);

make the advancement of expenses mandatory for all indemnitees who are Genco directors or officers or persons serving at the request of Genco as a director or officer of another entity upon an undertaking by such person to repay such amounts if it is ultimately determined that such person was not entitled to indemnification by Genco (Genco’s Bylaws previously provided that any such expense advancement was at the discretion of the Board of Directors (advancement of expenses for indemnitees who serve as an employee of Genco continues to be at the discretion of the Board of Directors));

limit the requirement that Genco notify shareholders of indemnity payments and advances of expenses only to the extent required under Illinois law; and

limit the maximum liability of Genco, Ameren and Ameren’s other majority owned subsidiaries for indemnification and advancement of expenses to any person “serving at the request of the Company” under the Bylaws or applicable law for such service to $25 million, except with respect to an employee benefit plan of Genco, Ameren and Ameren’s other majority owned subsidiaries (or such plan’s participants or beneficiaries) or as otherwise expressly approved by the Board of Directors (Genco’s Bylaws did not previously include an express dollar limit on any such indemnification and advancement of expenses).

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