Human Genome Sciences Announces July 16 as the Date for Submission of Definitive Acquisition Proposals

Human Genome Sciences Announces July 16 as the Date for Submission of Definitive Acquisition Proposals
June 15, 2012

ROCKVILLE, Md.--(BUSINESS WIRE)--Human Genome Sciences, Inc. (Nasdaq: HGSI) today announced that, in connection with its ongoing strategic alternative review process, it had previously set a bid date of July 16, 2012 for the submission of definitive proposals to acquire all outstanding common shares of HGS. In this regard, HGS yesterday sent a letter to GlaxoSmithKline (GSK) once again inviting GSK to participate in the ongoing process according to the same procedures previously established and to provide, by no later than July 16, 2012, GSK's final bid terms, including a response to a draft agreement which will be provided to all interested bidders. The letter specifically noted that the HGS Board of Directors has previously rejected $13.00 per share as inadequate.

HGS is committed to completing its exploration of strategic alternatives in a manner that ensures that HGS stockholders have the benefit of a complete and fair process and welcomes GSK to fully participate in such process.

There can be no assurance that the timing of the process will not change or that the process being conducted will result in any transaction. HGS does not intend to comment further on the process unless and until an agreement in principle or definitive agreement is signed, except as otherwise required by law.

ABOUT HUMAN GENOME SCIENCES

Human Genome Sciences exists to place new therapies into the hands of those battling serious disease.

For more information about HGS, please visit the Company's web site at www.hgsi.com. Health professionals and patients interested in clinical trials of HGS products may inquire via email to [email protected].

HGS, Human Genome Sciences and BENLYSTA® are trademarks of Human Genome Sciences, Inc. Other trademarks referenced are the property of their respective owners.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This announcement includes statements that are forward-looking. These forward-looking statements are based on our current intentions, beliefs and expectations regarding future events. We cannot guarantee that any forward-looking statement will be accurate. Investors should realize that if underlying assumptions prove inaccurate or unknown risks or uncertainties materialize, actual results could differ materially from our expectations. Investors are, therefore, cautioned not to place undue reliance on any forward-looking statement. Any forward-looking statement speaks only as of the date of this announcement, and, except as required by law, we do not undertake to update any forward-looking statement to reflect new information, events or circumstances.

Some important factors that could cause our actual results to differ from our expectations in these forward-looking statements include: our lack of commercial experience and dependence on the sales growth of BENLYSTA; any failure to commercialize BENLYSTA successfully; the occurrence of adverse safety events with our products; changes in the availability of reimbursement for BENLYSTA; the inherent uncertainty of the timing, success of, and expense associated with, research, development, regulatory approval and commercialization of our pipeline products, including darapladib and albiglutide, and new indications for existing products; uncertainty as to the future success of darapladib and GSK's ability to develop and commercialize darapladib; substantial competition in our industry, including from branded and generic products; the highly regulated nature of our business; uncertainty regarding our intellectual property rights and those of others; the ability to manufacture at appropriate scale, and in compliance with regulatory requirements, to meet market demand for our products; our substantial indebtedness and lease obligations; our dependence on collaborations over which we may not always have full control; foreign exchange rate valuations and fluctuations; the impact of our acquisitions and strategic transactions; changes in the health care industry in the U.S. and other countries, including government laws and regulations relating to sales and promotion, reimbursement and pricing generally; significant litigation adverse to the Company, including product liability and patent infringement claims; our ability to attract and retain key personnel; increased scrutiny of the health care industry by government agencies and state attorneys general resulting in investigations and prosecutions; risks and uncertainties associated with the Offer or any other offer or proposal; the outcome of any litigation related to the Offer or any other offer or proposal; and the Board's recommendation to the stockholders concerning the Offer or any other offer or proposal.

The foregoing sets forth many, but not all, of the factors that could cause actual results to differ from our expectations in any forward-looking statement. Investors should consider this cautionary statement, as well as the risk factors identified in our periodic reports filed with the SEC, when evaluating our forward-looking statements.

IMPORTANT INFORMATION FOR INVESTORS AND STOCKHOLDERS

This communication does not constitute an offer to buy or a solicitation of an offer to sell any securities. In response to the tender offer commenced by GlaxoSmithKline plc through its wholly owned subsidiary, H. Acquisition Corp., HGS has filed a solicitation/recommendation statement on Schedule 14D-9 with the SEC. INVESTORS AND STOCKHOLDERS OF HGS ARE URGED TO READ THE SOLICITATION/RECOMMENDATION STATEMENT AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY BECAUSE THEY CONTAIN IMPORTANT INFORMATION. Investors and stockholders may obtain a copy of these documents free of charge at the SEC's website at www.sec.gov. HGS also will provide a copy of these materials without charge on its website at www.hgsi.com, or stockholders may call HGS' Information Agent, Innisfree M&A Incorporated, toll-free at 877-717-3926.

Contacts

HGS CONTACTS
Media:
Susannah Budington
Director, Corporate Public Relations
301-545-1062
or
Jerry Parrott
Vice President, Corporate Communications
301-315-2777
or
Investor Contact:
Claudine Prowse, Ph.D.
Vice President, Investor Relations
301-610-5800
or
Additional Contacts:
Joele Frank / Dan Katcher / Jamie Moser
Joele Frank, Wilkinson Brimmer Katcher
(212) 355-4449
or
Arthur Crozier / Jennifer Shotwell / Larry Miller
Innisfree M&A Incorporated
(212) 750-5833