SAN DIEGO--(BUSINESS WIRE)--Illumina (NASDAQ: ILMN) today announced the closing of $400 million principal amount of 0.625% Convertible Senior Notes due 2014 through offerings to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). This includes the exercise of the underwriters’ over-allotment option to purchase an additional $50 million of notes.