Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
HARBERT MANAGEMENT CORP
   2. Issuer Name and Ticker or Trading Symbol
AK STEEL HOLDING CORP [AKS] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
ONE RIVERCHASE PARKWAY SOUTH, 		 3. Date of Earliest Transaction (Month/Day/Year)
04/09/2008
(Street)

BIRMINGHAM, AL 35244		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 04/09/2008   P   133,334 A $ 63.7 10,866,667 (1) I By Harbinger Capital Partners Master Fund I, Ltd.
Common Stock 04/09/2008   P   46,667 A $ 63.66 10,913,334 (1) I By Harbinger Capital Partners Master Fund I, Ltd.
Common Stock 04/09/2008   P   66,666 A $ 63.7 5,433,333 (2) I By Harbinger Capital Partners Special Situations Fund, L.P.
Common Stock 04/09/2008   P   23,333 A $ 63.66 5,456,666 (2) I By Harbinger Capital Partners Special Situations Fund, L.P.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HARBERT MANAGEMENT CORP
ONE RIVERCHASE PARKWAY SOUTH
BIRMINGHAM, AL 35244		     X    
FALCONE PHILIP
555 MADISON AVE
16TH FLOOR
NEW YORK, NY 10022		     X    
HARBERT RAYMOND J
ONE RIVERCHASE PARKWAY SOUTH
BIRMINGHAM, AL 35244		     X    
LUCE MICHAEL D
ONE RIVERCHASE PARKWAY SOUTH
BIRMINGHAM, AL 35244		     X    

Signatures

 Harbert Management Corporation, By: /s/ William R. Lucas, Jr.   04/11/2008
**Signature of Reporting Person Date
 /s/ Philip Falcone   04/11/2008
**Signature of Reporting Person Date
 /s/ Raymond J. Harbert   04/11/2008
**Signature of Reporting Person Date
 /s/ Michael D. Luce   04/11/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These securities are owned by Harbinger Capital Partners Master Fund I, Ltd. (the "Master Fund"). These securities may be deemed to be beneficially owned by Harbert Management Corporation ("HMC"), Philip Falcone, Raymond J. Harbert and Michael D. Luce. Philip Falcone is the portfolio manager of the Master Fund and a shareholder of HMC. Raymond J. Harbert and Michael D. Luce are shareholders of HMC. Each such Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
(2) These securities are owned by Harbinger Capital Partners Special Situations Fund, L.P. (the "Special Situations Fund"). These securities may be deemed to be beneficially owned by HMC, Philip Falcone, Raymond J. Harbert and Michael Luce. HMC wholly owns the managing member of the Special Situations Fund's general partner. Philip Falcone is the portfolio manager of the Special Situations Fund and is a shareholder of HMC. Raymond J. Harbert and Michael D. Luce are shareholders of HMC. Each such Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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