Aon Corp

Certification of approval for listing and registration on a national securities exchange

Registration of Securities on Exchange

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Prospectus Supplement for Primary Offering

Automatic Shelf Registration

Notification of removal from listing and/or registration on a national securities exchange

Notification of removal from listing and/or registration on a national securities exchange

Notification of removal from listing and/or registration on a national securities exchange

Certification of approval for listing and registration on a national securities exchange

Registration of Securities on Exchange

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Prospectus Supplement for Primary Offering

Notification of removal from listing and/or registration on a national securities exchange

Registration of Securities on Exchange

Registration of Securities on Exchange

Registration of Securities on Exchange

Registration of Securities on Exchange

Registration of Securities on Exchange

No description available

No description available

No description available

No description available

No description available

No description available

No description available

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC