X0202 4 2005-09-28 0001100813 OPSWARE INC OPSW 0001166586 HOROWITZ BENJAMIN A C/O OPSWARE INC. 599 N MATHILDA AVENUE SUNNYVALE CA 94085 1 1 0 0 President and CEO Common Stock 2005-09-28 4 P 0 12000 4.4631 A 46997 I By Horowitz Family Trust Common Stock 250003 I By Children's Trusts Common Stock 3872453 D Indirect ownership by the Horowitz Family Trust dated August 29, 1997, Benjamin A. Horowitz and Felicia A. Horowitz, Trustees. The trust also includes 34,997 shares transferred on June 21, 2005 from the dissolution of the Horowitz Family Limited Partnership. Indirect ownership by the Horowitz children's trusts dated June 8, 2000, Jonathan Daniel, Trustee. Represents shares transferred June 21, 2005 from the dissolution of the Horowitz Family Limited Partnership. /s/ Benjamin A. Horowitz 2005-09-28