X0303 4 2009-09-30 0000918160 AK STEEL HOLDING CORP AKS 0001423981 Cuneo Dennis C 9227 CENTRE POINTE DRIVE WEST CHESTER OH 45069 1 Common Stock 2009-09-30 4 A 0 1329.072 0 A 6928.367 D Common Stock 2000 I As Trustee For Bonita M Cuneo Revocable Trust The securities reported in this column consist of restricted stock units which give the reporting person a contractual right to receive at a future date one share of common stock of AK Steel Holding Corporation for each restricted stock unit held. The number of securities reported in this column includes 4,555.367 restricted stock units held by the reporting person as of the date of this filing. That includes 7.536 restricted stock units that were acquired as a result of the reinvestment of dividends paid by the company on September 10, 2009. /s/ Amy Collins, attorney-in-fact for Mr. Cuneo 2009-10-02