Roche (SIX: RO, ROG; OTCQX: RHHBY) announced today that it has increased its offer price for all outstanding publicly-held shares of Illumina, Inc. (NASDAQ: ILMN) to US$ 51.00 per share in cash. All other terms and conditions of the tender offer remain unchanged.

Severin Schwan, Chief Executive Officer of Roche, said: “Based on our discussions with Illumina shareholders we have seen interest to accelerate the takeover process. As a result, we are increasing our offer price to US$ 51.00 per share. Roche’s preference continues to be a negotiated transaction. We look forward to the possibility of a swift completion that offers immediate value to Illumina’s shareholders.”

Copies of the Offer to Purchase, Letter of Transmittal and other related materials are available on the SEC website at https://www.sec.gov or may be obtained from MacKenzie Partners, Inc., the information agent for the offer, at (212) 929-5500 or (800) 322-2885 (Toll-Free).

Additional information about the transaction, including the offering documents, is available at www.transactioninfo.com/roche.

Greenhill & Co., LLC and Citigroup Global Markets, Inc. are acting as financial advisors to Roche and Davis Polk & Wardwell LLP is acting as legal counsel.

About Roche

Headquartered in Basel, Switzerland, Roche is a leader in research-focused healthcare with combined strengths in pharmaceuticals and diagnostics. Roche is the world’s largest biotech company with truly differentiated medicines in oncology, virology, inflammation, metabolism and CNS. Roche is also the world leader in in-vitro diagnostics, tissue-based cancer diagnostics and a pioneer in diabetes management. Roche’s personalized healthcare strategy aims at providing medicines and diagnostic tools that enable tangible improvements in the health, quality of life and survival of patients. In 2011, Roche had over 80’000 employees worldwide and invested over 8 billion Swiss francs in R&D. The Group posted sales of 42.5 billion Swiss francs. Genentech, United States, is a wholly owned member of the Roche Group. Roche has a majority stake in Chugai Pharmaceutical, Japan. For more information: www.roche.com

About Roche

Headquartered in Basel, Switzerland, Roche is a leader in research-focused healthcare with combined strengths in pharmaceuticals and diagnostics. Roche is the world’s largest biotech company with truly differentiated medicines in oncology, virology, inflammation, metabolism and CNS. Roche is also the world leader in in-vitro diagnostics, tissue-based cancer diagnostics and a pioneer in diabetes management. Roche’s personalized healthcare strategy aims at providing medicines and diagnostic tools that enable tangible improvements in the health, quality of life and survival of patients. In 2011, Roche had over 80’000 employees worldwide and invested over 8 billion Swiss francs in R&D. The Group posted sales of 42.5 billion Swiss francs. Genentech, United States, is a wholly owned member of the Roche Group. Roche has a majority stake in Chugai Pharmaceutical, Japan. For more information: www.roche.com