Thanks, Kate. And good day, everyone. ICON made a good start to 2023, in quarter one, delivering solid results while continuing to develop our strategic initiatives in health care intelligence. We continue to navigate macroeconomic headwinds that are impacting our industry. While we expect these challenges to cause uncertainty in the short to medium term, now more than ever, our customers are turning to ICON is a strong, stable and strategic partner that has the broad service -- resources and capabilities to optimally manage their clinical development programs and functions. Notwithstanding this, we have seen a generally stable underlying market demand across customer segments, supported by the fundamental drivers of increasing R&D spend and further outsourcing penetration. This has resulted in improving sequential RFP trends in quarter one. Within customer segments, demand from mid- and large biopharma companies continues to show growth with a recent increase in the number of larger FSP opportunities. In the emerging biotech segment, cautiousness with regard to spending has continued as the broader funding environment remained challenged. Companies are actively conserving cash and prioritizing programs until they have improved visibility to additional funding. As a result, we have seen some delays in decision-making within this segment and more considered assessments on the scale and timing of their studies. While this dynamic creates a more challenging environment in the segment in the near term, our commitment remains unchanged in this area of the market that continues to fuel innovation in R&D. We are partnering with many of our biotech customers at an early phase of development and connecting our operational and medical experts with their leadership teams to collaboratively regenerate optimal development plans and conduct their studies. In doing so, we get to truly understand our customers' objectives, and this builds meaningful and long-term partnerships. We remain encouraged by the traction we are gaining broadly in the marketplace and the opportunity ahead of ICON. Our unique position as a world-leading provider of clinical development services appeals to customers across all segments. And we've made good progress in advancing a number of strategic discussions with large and mid-sized pharma companies since our union with PRA Health Sciences. There is an increasing amount of engagement taking place at a strategic level in customer accounts as companies evaluate and review their optimal clinical development strategies. We are seeing a growing need for full-service, functional and hybrid solutions, with customers seeking a partner that has the necessary scale, expertise, experience and breadth of offering to seamlessly execute their programs and/or augment their existing infrastructure. To that end, in quarter one, we announced a strategic partnership with LEO Pharma, a global leader in dermatology, with ICON acting as their sole provider of clinical development services. The partnership will leverage both fully outsourced and functional outsourcing activities in a tailored and flexible hybrid approach to development. This unique model is designed to provide patients improved access to innovative trials while effectively and flexibly managing LEO's development portfolio. In addition, our late-phase business was awarded a full-service strategic partnership in real-world solutions by a large biopharma sponsor in quarter one. This customer cited ICON's strong history of delivering real-world evidence studies, collaborative approach to deliver solutions and assessment of CRO leadership as key decision criteria when awarding this partnership. We continue to see opportunity to improve our execution in key development activities such as Study Start Up, site selection, patient identification and recruitment as trial complexity increases and durations expand. With challenging dynamics in the market such as sites facing resource constraints, increasingly niche patient populations and an overall uptick in regulatory requirements, the need for novel solutions and new approaches is accelerating. As a consequence, our focus and investment in innovation has continued to increase across a number of areas within our organization. We have demonstrated success with several tools we have developed at ICON and believe we are in the early stages of creating even more meaningful improvements in clinical development. Our approach to innovation recognizes the importance of coupling our unique experience and expertise alongside technology to develop solutions that deliver value for customers. OneSearch, our integrated AI tool for site identification and selection, is driving remarkably better delivery of studies, with a 53% reduction in the median time for site identification and a 50% reduction in the percentage of non-enrolling sites on ICON studies. Separately, we have launched a new customer-facing tool with our late-phase business called Cassandra, designed to more accurately predict post-marketing commitments. This model utilizes machine learning technologies, along with our leading expertise in Phase IV and post-marketing clinical trials, to generate insights on late-phase strategy and planning. Outside of technology, we are further investing in our differentiated capabilities with the purchase of the remaining shares in our joint venture with Oncacare, a global cancer research site network. Oncacare is uniquely positioned to increase patient engagement and oncologists' participation in clinical research through more efficient clinical trial delivery and a patient-led approach. We are excited to add Oncacare to our leading site and patient solutions business with critical therapeutic expertise and experience it brings to further enhance our offer. Moving to our financial performance in quarter one. ICON delivered solid results with a 5.3% revenue growth on a constant currency organic basis over quarter one 2022. Excluding COVID-related work on a constant currency basis, revenue increased 9% year-over-year. Gross bookings increased 6% sequentially, but a higher level of cancellations and contract modifications in the quarter resulted in net bookings growth of 3% over quarter four 2022 and a net book-to-bill of 1.22. Solid direct fee revenue growth drove gross margin expansion of 200 basis points on a year-over-year basis. We also saw another quarter of impressive growth in adjusted EBITDA resulting in an increase of 17.2% year-over-year, driven by cost management and the continued execution of our hub location strategy across global business services. Our capital deployment strategy continued as planned, with a further reduction in our floating-rate debt exposure in the quarter. Additionally, we remain active in evaluating potential acquisition opportunities that strategically align with our portfolio and further enhance our offering. We are reaffirming our full year 2023 financial guidance of revenue in the range of $7.94 billion to $8.34 billion, representing 2.6% to 7.7% growth on a year-over-year reported basis; and adjusted earnings per share in the range of $12.40 to $13.05, representing growth of 5.5% to 11.1% on a year-over-year basis. The guidance assumes double-digit adjusted EBITDA growth for the full year 2023, over 2022. Finally, I want to thank our employees across ICON for their significant contributions to our performance in quarter one. We remain steadfast in our commitment to advancing and accelerating clinical development; and we are encouraged by the value we are delivering for customers, sites and patients. I'll now turn the call over to Brendan for additional comments on our financial results. Brendan?