Thank you, Sonya, and good afternoon, everyone. Thank you for joining us today as we discuss the operational and financial results for the fourth quarter and 12 months of 2018. As is customary, today's call is open to all participants and, in addition, the call is being recorded and is copyrighted by Emergent BioSolutions. Participating on the call with prepared comments will be Dan Abdun-Nabi, Chief Executive Officer; Bob Kramer, President and Chief Operating Officer; and Rich Lindahl, Chief Financial Officer. Other members of the senior team are present and available during the Q&A session that will follow our prepared comments. Before beginning, I will remind everyone that during today's call either on our prepared comments or the Q&A session, management may make projections and other forward-looking statements related to our business, future events, our prospects or future performance. These forward-looking statements are based on 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. Any forward-looking statement speaks only as of the date of this conference call and, except as required by law, we do not undertake to update any forward-looking statement to reflect new information, events or circumstances. Investors should consider this cautionary statement as well as the risk factors identified in our periodic reports filed with the Securities and Exchange Commission when evaluating our forward-looking statements. During our prepared comments as well as during the Q&A session, we may also refer to certain non-GAAP financial measures that involve adjustments to GAAP figures in order to provide greater transparency regarding Emergent’s operating performance. Please refer to the tables found in today's press release regarding our use of adjusted net income, EBITDA and adjusted EBITDA and the reconciliations between our GAAP financial measures and these non-GAAP financial measures. For the benefit of those who may be listening to the replay of the webcast, this call was held and recorded on February 21, 2019. Since then, Emergent may have made announcements related to topics discussed during today's call. You are once again encouraged to refer to our most recent press releases and the SEC filings, all of which may be found on the Investors homepage of our website. And with that introduction, I would now like to turn the call over to Dan Abdun-Nabi, Emergent BioSolutions' CEO. Dan?