UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.      )

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o		Preliminary Proxy Statement		o		Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o		Definitive Proxy Statement
þ		Definitive Additional Materials
o		Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12

AK STEEL HOLDING CORPORATION

(Name of Registrant as Specified In Its Certificate)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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Stockholder Meeting Notice

Important Notice Regarding the Availability of Proxy Materials for the
Stockholder Meeting to be Held on May 26, 2011

Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual stockholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important!

This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy materials, which include the Notice and Proxy Statement, Annual Report on Form 10-K and a Letter to Stockholders from the Chairman, President and Chief Executive Officer, and access to the proxy voting site are available at:

When you go online, you can also help the environment by consenting to receive electronic delivery of future materials.

		Obtaining a Copy of the Proxy Materials — If you want to receive a paper or e-mail copy of these documents, you must request one. There is no charge to you for requesting a copy. Please make your request for a copy as instructed below on or before May 15, 2011 to facilitate timely delivery.

Stockholder Meeting Notice

AK Steel Holding Corporation’s Annual Meeting of Stockholders will be held on on Thursday, May 26, 2011 at The Ritz Carlton Hotel Chicago, 160 E. Pearson Street, Chicago, Illinois 60611, at 1:30 p.m. Central Time.

Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations.

The Board recommends a vote “FOR” Proposals 1, 2 and 3 and for the option of “THREE YEARS” on Proposal 4.

	1.		To elect as Directors of the Company the ten candidates nominated by the Board (Proposal 1);
	2.		To ratify the Audit Committee’s appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for 2011 (Proposal 2);
	3.		To approve, by a non-binding advisory vote, the compensation of our Named Executive Officers (Proposal 3); and
	4.		To select, by a non-binding advisory vote, the frequency for future stockholder votes concerning Named Executive Officer compensation (Proposal 4).

PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must vote online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you.

01BDRC