SAN DIEGO–Illumina, Inc. (NASDAQ:ILMN), a leading developer, manufacturer, and marketer of life science tools and integrated systems for the analysis of genetic variation and function, tonight acknowledged the announcement by Roche (RHHBY.PK) that Roche has made an unsolicited acquisition proposal and intends to commence a tender offer to acquire all of the outstanding shares of Illumina’s common stock for $44.50 per share in cash.

Consistent with its fiduciary duties and responsibilities, and in consultation with its financial and legal advisors, Illumina’s Board of Directors will thoroughly review Roche’s proposal and make a recommendation to stockholders in due course that the Board believes is in the best interests of Illumina stockholders. Illumina stockholders are advised to take no action at this time pending the Board’s recommendation.

Goldman, Sachs & Co. and Bank of America Merrill Lynch are acting as financial advisors and Dewey & LeBoeuf LLP is acting as legal counsel to Illumina.

About Illumina

Illumina (www.illumina.com) is a leading developer, manufacturer, and marketer of life science tools and integrated systems for the analysis of genetic variation and function. We provide innovative sequencing and array-based solutions for genotyping, copy number variation analysis, methylation studies, gene expression profiling, and low-multiplex analysis of DNA, RNA and protein. We also provide tools and services that are fueling advances in consumer genomics and diagnostics. Our technology and products accelerate genetic analysis research and its application, paving the way for molecular medicine and ultimately transforming healthcare.