THOUSAND OAKS, Calif.--(BUSINESS WIRE)--Amgen (NASDAQ:AMGN) today announced the pricing of $1.1 billion principal amount of 5.85 percent Senior Notes due 2017, $900 million principal amount of 6.375 percent Senior Notes due 2037, and $2 billion principal amount of 18 month floating rate Senior Notes, for an aggregate transaction size of $4 billion. The eighteen month floating rate Senior Notes will bear interest at a rate equal to the three month LIBOR plus 0.08 percent and will be reset and payable quarterly, and will be callable by Amgen beginning six months after issuance. The notes are being sold in a private placement to qualified institutional buyers pursuant to Rule 144A and Regulations S under the Securities Act of 1933, as amended (the “Securities Act”). The sale of the notes is expected to close on May 30, 2007, subject to customary closing conditions.