Optimer Pharmaceuticals, Inc. Reports Fourth Quarter and Full Year 2009 Financial Results

SAN DIEGO, March 11 /PRNewswire-FirstCall/ -- Optimer Pharmaceuticals, Inc. today announced 2009 fourth quarter and full year financial results and accomplishments.

(Logo: http://www.newscom.com/cgi-bin/prnh/20090413/LA97352LOGO)

Optimer reported a net loss for the three months ended December 31, 2009 of $9.6 million, or $0.28 per common share, as compared to a net loss of $10.4 million, or $0.35 per common share, for the same period in 2008. Optimer reported a net loss for the year ended December 31, 2009 of $42.2 million, or $1.30 per common share, as compared to a net loss of $35.6 million, or $1.24 per common share, for 2008. The increase of $6.6 million was due primarily to an increase in development expenses, manufacturing scale-up expenses, and expenses to prepare regulatory filings related to fidaxomicin and Pruvel(TM) (prulifloxacin).

As of December 31, 2009, Optimer held cash, cash equivalents and short-term investments of $38.2 million. In March 2010, Optimer raised an additional $51.2 million of net proceeds in a public offering of common stock.

“Recently, we announced robust results from our second Phase 3 trial of fidaxomicin confirming the positive results of our first Phase 3 trial showing that fidaxomicin has the potential to be a first-in-class drug for the treatment of Clostridium difficile infection,” said Michael N. Chang, President and CEO of Optimer. “2010 will be a significant year for Optimer, as we focus on completing fidaxomicin and Pruvel regulatory filings, publish existing data and continue to prepare for the commercialization of these product candidates.”

Optimer expects to use cash, cash equivalents and short-term investments of approximately $50 million for its operating activities in 2010, based on its current operating plans.

Optimer 2009 and Recent Highlights

Scheduled Conference Call

The Company will host both a conference call and webcast to discuss the fourth quarter and full year 2009 financial results and to provide a corporate update today, Thursday, March 11, 2010 at 4:30 p.m. Eastern time (1:30 p.m. Pacific time).

The conference call may be accessed by dialing (877) 375-5161 for domestic callers and (631) 291-4558 for international callers. Please specify to the operator that you would like to join the “Optimer Earnings Call.” The conference call will be webcast live under the Investors section of Optimer’s website at www.optimerpharma.com, where it will be archived for 30 days following the call.

About Optimer Pharmaceuticals

Optimer Pharmaceuticals, Inc. is a biopharmaceutical company focused on discovering, developing and commercializing innovative anti-infectives to treat serious infections and address unmet medical needs. Optimer has two late-stage anti-infective product candidates under development. Fidaxomicin, formerly known as OPT-80, is the first of a new class of antibiotics with narrow spectrum bactericidal activity targeted at the site of infection. Recently reported positive top-line results from the second Phase 3 trial confirmed the results from the first Phase 3 trial regarding fidaxomicin’s safety and efficacy in patients with Clostridium difficile infection. Optimer has also successfully completed two Phase 3 trials with Pruvel(TM), for the treatment of travelers’ diarrhea, a form of infectious diarrhea. Additional information can be found at http://www.optimerpharma.com.

Forward-looking Statements

Statements included in this press release that are not a description of historical facts are forward-looking statements, including without limitation all statements related to the development of fidaxomicin and Pruvel, anticipated uses of cash, cash equivalents and short term investments, the timing of anticipated regulatory submissions, and the future presentation of clinical data. Words such as “believes,” “anticipates,” “plans,” “expects,” “intend,” “will,” “goal” and similar expressions are intended to identify forward-looking statements. The inclusion of forward-looking statements should not be regarded as a representation by Optimer that any of its plans will be achieved. Actual results may differ materially from those set forth in this release due to the risks and uncertainties inherent in Optimer’s business including, without limitation, risks relating to: the timing, progress and likelihood of success of its product research and development programs, the timing and status of its preclinical and clinical development of potential drugs, uncertainty regarding regulatory requirements for approval and the timing of regulatory submissions, an inability to enter into partnerships on favorable terms or at all, and other risks detailed in Optimer’s filings with the Securities and Exchange Commission.

CONTACT: John Prunty, CFO & VP, Finance, or Christina Donaghy, Corporate
Communications Manager, both of Optimer Pharmaceuticals, Inc.,
+1-858-909-0736; or Jason I. Spark, Vice President of Porter Novelli Life
Sciences, +1-619-849-6005, for Optimer Pharmaceuticals, Inc.

Web site: http://www.optimerpharma.com/

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