AK Steel Holding (AKS)

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

The 2006 Annual Meeting of Stockholders of AK Steel Holding Corporation (the “Company”) will be held at The Ritz-Carlton Chicago, 160 East Pearson Street at Water Tower Place, Chicago, Illinois 60611-2124, on Friday, May 19, 2006, at 1:30 p.m., Central Daylight Saving Time, for the following purposes:

The Board of Directors has fixed March 27, 2006, as the record date for the determination of stockholders entitled to receive notice of and to vote at the Annual Meeting.

Stockholders will need to present personal photo identification and an admission ticket to attend the Annual Meeting. If you are a Holder of Record, an admission ticket is attached to your proxy card for this purpose. If your shares are not registered in your name, you must bring personal photo identification and proof of stock ownership to the meeting to receive an admission ticket. Please bring either a copy of your account statement or a letter from your broker, bank or other institution reflecting the number of shares of common stock you own as of March 27, 2006. Please note that no cameras, recording devices or other electronic devices will be permitted at the meeting. For your safety, we reserve the right to inspect all packages prior to admission at the Annual Meeting.

Middletown, Ohio

April 17, 2006

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

The 2005 Annual Meeting of Stockholders of AK Steel Holding Corporation (the “Company”) will be held at the Four Seasons Hotel, located at 120 East Delaware Place, Chicago, Illinois 60611, on Tuesday, May 17, 2005, at 1:30 p.m. Central Daylight Saving Time, for the following purposes:

The Board of Directors has fixed March 25, 2005, as the record date for the determination of stockholders entitled to receive notice of and to vote at the Annual Meeting.

Middletown, Ohio

April 22, 2005

WHETHER YOU PLAN TO ATTEND THE ANNUAL MEETING OR NOT, PLEASE MARK, DATE AND SIGN THE ENCLOSED FORM OF PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED ENVELOPE. YOU MAY REVOKE YOUR PROXY AT ANY TIME BEFORE IT IS VOTED BY FURNISHING WRITTEN NOTICE TO THAT EFFECT, BY SUBMITTING A SUBSEQUENTLY DATED PROXY OR BY ATTENDING THE ANNUAL MEETING AND VOTING IN PERSON.