Good morning. I am very pleased to say that 2015 was another exceptional year for Charles River. As was the case in 2014, our financial results demonstrated what we have worked very hard to achieve; strongest portfolio that we have ever had with the ability to support clients from target discovery through preclinical development; deep client relationships where we are a respected and trusted partner; a streamlined organization with the flexibility to respond to a changing industry and client requirements; and employees who are committed to providing exceptional service to our clients. We are extremely proud of the fact that we worked on 50% of the drugs approved by the FDA over the last 2 years, an accomplishment that few CROs can claim. We believe it’s a testament to the value our clients place on our contribution to their research efforts and we work everyday to enhance that value. Let me give you the highlights of our fourth quarter performance. We reported revenue of $353.9 million in the fourth quarter of 2015, 11.3% increase over the previous year in constant currency. Acquisitions contributed 3.4% to fourth quarter revenue growth and many of our businesses reported organic growth with the most significant contributions from Safety Assessment, Microbial Solutions, Biologics and Research Models. Sales to midsized biotechnology clients increased at a low double-digit rate and sales to global accounts also increased. The operating margin increased 410 basis points year-over-year to 20.7%. We were very pleased with the margin, which benefited both from higher revenue and efficiency initiatives. At 27.1%, the DSA segment reported the most significant margin improvement, although foreign exchange and the change in Quebec tax law contributed approximately 400 of the 770 basis point gain. David will provide more detail on that topic shortly. But even adjusted for these items, the DSA margin would have been approximately 23%. The RMS segment operating margin also improved 220 basis points year-over-year due primarily to the benefit of efficiency initiatives. Earnings per share were $1 in the fourth quarter, an increase of 23.1% from $0.81 in the fourth quarter of 2014. The improvement was due primarily to higher revenue and operating income as the shares outstanding in both the quarter and the full year were relatively unchanged as a result of our share repurchase program. In 2015, revenue was approximately $1.36 billion, a growth rate of 10.4% in constant currency with acquisitions contributing 4%. The operating margin improved by 180 basis points to 19.4% primarily as a result of leverage from higher revenue and operating efficiencies. Earnings per share were $3.76, an 8.7% increase over 2014, but a 14% increase when adjusting for the negative impact of foreign exchange and gains from limited partnership investments. We believe that our strong performance in 2015 thoroughly demonstrates the successful execution of our strategy to position Charles River as the early stage research partner of choice, a position that we believe will be enhanced by the pending acquisition of WIL Research. We are optimistic about the opportunities for growth in 2016. Strong demand for our unique portfolio of products and services, the potential for expanding strategic relationships and continuing gains from productivity and efficiency initiatives gives us confidence in our 2016 guidance. Revenue growth in 2016 in which we are including only acquisitions already completed is expected to be in the range from 9% to 11% in constant currency. Non-GAAP earnings per share are expected to be in the range from $4.07 to $4.17, including a gain of $0.04 from limited partnership investments. This would represent an earnings increase of just over 9.5% from last year at the midpoint. When including the expected impact from the WIL acquisition, the revenue growth rate on a constant currency basis, rises to a range of 20% to 23.5% and non-GAAP EPS estimates increases to a range of $4.27 to $4.40, representing an increase of approximately 15% year-over-year at the midpoint. I would like to provide you with details on the fourth quarter segment performance, beginning with the RMS segment. Revenue was $114.7 million, an increase of 2.1% in constant currency over the fourth quarter of 2014. Sales of Research Models were the primary contributor to the increase driven in nearly equal parts by North America and Europe. In both regions, we continue to see increased demand for inbred research models, which we believe are the models of choice for translational research. As was the case in the third quarter, sales in Japan continue to decline moderately. But when looking at Asia in total, higher revenue in China more than offset the decline in Japan. China continues to present a significant opportunity for us as the government and private industry both fund drug research. Therefore, we are moving ahead with plans to expand our footprint in China to increase our research model production capacity and provide associated services. It appears that the adverse effects of consolidation of the biopharmaceutical industry moderated in 2015 in both North America and Europe and that demand in China continue to increase. We expect similar trends in 2016 in all geographic areas and also expect to realize price increases of 2% to 3%. As expected, revenue for research models services increased slightly in the fourth quarter. We had discussed our expectation for a better second half of 2015, which was based primarily on the anniversaries of the NCI contract cancellation in the third quarter and the reduction of the significant GEMS colony by one client in the fourth quarter. In addition, the Insourcing Solutions business reported growth in the fourth quarter as a result of new contracts. In the fourth quarter, the RMS operating margin increased by 220 basis points to 25.4%. The revenue increase, the consolidation of our facilities in Japan and other efficiency initiatives generated a benefit in the fourth quarter. We continued to identify opportunities to streamline our RMS operations, particularly through the automation of manual processes and implementation of systems to improve data availability and accuracy. We maintain our belief that an annual RMS operating margin in the high 20% range is achievable and sustainable. The Manufacturing Support segment finished a very strong year with fourth quarter revenue of $78.6 million, representing a growth rate of 32.4% in constant currency. The acquisitions of Celsis and Sunrise contributed 13.7% to growth. On an organic basis, growth was 18.7% with each of the businesses in the segment, Microbial Solutions, Biologics and Avian, delivering double-digit growth. Microbial Solutions was the primary driver of the increase, reporting growth of more than 20% on an organic basis. Client conversion to our rapid Endotoxin testing methods has increased both our demand for PTS machines and the associated use of cartridges. Our continuous product innovation has expanded the applications to the PTS whether as a result of faster processing like the Nexus or improved connectivity like the nexgen. We continued to broaden our capabilities with the acquisition of Celsis in July, which positions Microbial Solutions as the only provider that can offer a unique comprehensive solution for rapid quality control testing of both sterile and non-sterile biopharmaceutical and consumer products. The integration of Celsis has progressed well and the sales organization has been extensively trained on selling the broader Microbial Solutions portfolio. We are optimistic that execution of our sales strategies for both the sterile and non-sterile markets will be a key component of revenue growth in 2016 and that our ability to provide a total microbial testing solution to our clients will be a driver of our goal for Microbial Solutions to continue to deliver at least low double-digit organic revenue growth for the foreseeable future. The Biologics business reported one of its strongest performances ever in the fourth quarter, delivering robust revenue growth and an improved operating margin. Our continued investment in expanding our Biologics portfolio through the development of new assays and additional capabilities has enabled us to provide a broader testing solution for our clients. This investment is particularly important now when the number of biologic drugs in development is increasing. Our goal is to be well positioned to participate in this expanding opportunity and we are pleased with the progress we have made to-date. The Manufacturing segment’s fourth quarter operating margin was 33.8%, a 120 basis point decline year-over-year, although well in line with our goal of a low 30% margin. DSA revenue in the fourth quarter was $160.5 million, a 9.8% increase in constant currency. The Discovery acquisitions of ChanTest and Oncotest contributed 1.7% to the segment’s fourth quarter growth. The organic growth of 8.1% was driven primarily by the Safety Assessment business, which reported a low double-digit revenue increase over the fourth quarter of 2014, marking the fifth consecutive quarter with growth above 10%. We were exceptionally pleased with this performance, which resulted primarily from improved client demand especially from our small and mid-sized biotech clients and the successful execution of our targeted sales strategies. As I noted earlier, when adjusted for the Quebec tax change and foreign exchange, the DSA operating margin would have been approximately 23.1%, an improvement of 370 basis points from the 19.4% in the fourth quarter of 2014. The improvement was due primarily to the Safety Assessment business as a result of leverage from higher revenue. We were very pleased to see the Safety Assessment margin about 20% again and believe that we will continue to drive further improvement. Despite the fact that the DSA segment margin was above 20% for three quarters in 2015, in line with our strategic goal, I will remind you that the margin varies from quarter-to-quarter based on a number of factors, so margin improvement may not be linear. In addition, WIL’s operating margin is lower than the DSA margin, which we expect will moderate the DSA segment’s potential for margin expansion in 2016. The expansion of our portfolio to include discovery capabilities has greatly enhanced our ability to support our clients’ research efforts. We have selectively acquired assets and combine them with in-house capabilities to create a discovery business, which can assist our clients in solving complex challenges of early stage research. These capabilities are especially important now when global biopharma companies are making the decision to increase their reliance on CROs and small and mid-sized biotech companies, which have always relied on external resources are investing in their pipelines. Our Discovery business had a challenging year in 2015, primarily due to the cancellation at the end of 2014 of a large contract by a client that reprioritized its pipeline. We expect 2016 to be a more robust year for revenue growth because of the strength of demand combined with enhanced strategies for partnering with clients. We are adept at developing flexible working arrangements, which have become increasingly important to our clients. Higher revenue will drive margin expansion as well efficiency initiatives. We have recently implemented plans to consolidate two of our smaller sites by transferring employees and work streams to larger sites. In addition to improving operating efficiency, these initiatives will centralize scientific expertise, enhancing the opportunities for collaboration and for implementation of best practices. We are continuing to have extensive discussions with heads of research at global biopharma and small and mid-sized biotech companies to identify the opportunities to work together across Discovery and Safety Assessment. The success of our targeted sales strategies was demonstrated by our DSA revenue growth in 2015. Biotech companies were the primary driver as sales to these clients increased at a mid-teens rate year-over-year. We were also pleased that sales to global biopharma clients increased in a mid single-digit rate in 2015 due primarily to strong demand for Safety Assessment services as clients chose to work with us. In addition, we continued to initiate new and expand existing strategic relationships with our clients. As a result, revenue from strategic relationships gained approximately 300 basis points, representing more than 30% of total revenue in 2015. As clients have increasingly chosen to work with us, our capacity has filled and we are now operating at near optimal utilization levels in most of our Safety Assessment facilities. In order to accommodate demand and ensure we have sufficient capacity for future growth, we opened additional study rooms in 2014 and 2015 and reopened a portion of Charles River Massachusetts in January. At this point, most required physicians have been filled at Charles River Mass and we have begun to shift work streams to the facility. We continued to actively market the facility and client response has been very positive. Site visits are accelerating and clients are beginning to place their first studies in the facility. As a result, we are very optimistic that Charles River Mass will meet its targets in 2016. We believe this approach will be another key element of our continued ability to support our clients’ early stage research efforts and our long-term growth goals. We will provide capacity for growth as well as a needed footprint in Continental Europe. It also strengthens our existing service offerings in different geographic regions enabling us to provide broader services more approximate to our clients’ locations in North America and Europe. We are moving forward with our integration planning process in order to be well prepared for an early second quarter close. We are investing a significant amount of time meeting WIL’s management and continued to be very impressed with their scientific expertise, operational capabilities and client focus. We are working on a comprehensive management structure for Charles River Safety Assessment business, which will maximize the talents and best-in-class processes of both organizations. We are also preparing detailed plans for our sales and finance organizations as well as for IT and ERP solutions. Our goal is to get off to a strong start as soon as the acquisition closes maximizing the benefits of our larger organization and minimizing disruption. As David will discuss in a moment, our focus for capital deployment in 2016 will be on repaying debt associated with the WIL acquisition, so that we can lower our leverage to less than 3x EBITDA within 18 months of the close. We intend to continue to assess opportunities to broaden our early stage portfolio with small, strategic acquisitions and in-house development to increase our capabilities and therapeutic area expertise. However, our priority will be to integrate the acquisitions we have made in order to ensure that we obtain the expected benefits. We will also continue with our very successful productivity and efficiency initiatives, which have enabled us to enhance our operations and increase the value that we provide to clients offering our unique portfolio world-class scientific expertise and best-in-class client service at an effective price has been the cornerstone of our value proposition for clients and is clearly resonated. Disciplined investments we are making in infrastructure, both systems and personnel, are as important as the investments we make to expand and enhance our portfolio. In previous conference calls, I have discussed the systems we have implemented to provide improved access to data, ERP, inventory and client portals to name just a few. We have noted additions to our management ranks to augment our scientific expertise and operational capabilities such as the dedicated integration team we established in 2015. Identifying and hiring the best scientific and operational personnel continues to be one of the most critical components of the effective execution of our business strategy, which is the foundation for our future growth. By leveraging the investments we have made and new ones we intend to make in our portfolio and infrastructure, we will enhance the role we play in supporting our clients early stage drug research processes by providing critical capabilities, which they do not have in-house or which enable them to eliminate the internal investment. We are very enthusiastic about the opportunities that are available to us in 2016 and are working hard to capitalize on them. All of our efforts to-date have been focused on positioning Charles River as the premier early stage contract research organization with a unique portfolio and a scientific expertise to partner with all types of clients, global biopharma companies, which are increasingly making a more significant commitment to outsourcing as they strive to improve operating efficiency and increase pipeline productivity, biotech companies, which have always preferred outsourcing to build infrastructure and academic institutions, which are partnering with biopharma to monetize innovation and require partners to provide expertise in drug discovery and development. We believe that our global biopharma, biotech and academic clients are searching for the right partner to support them by taking on a broader role within their organizations and Charles River intends to be that partner. In conclusion, I would like to thank our employees for their exceptional work and commitment and our shareholders for their support. Now, I would like David Smith to give you additional details on our fourth quarter results and 2016 guidance.