Thank you, Jonathan, and thanks to all of you for joining us this afternoon to review Definitive Healthcare's fourth quarter 2025 financial results. On today's call, I'll provide highlights from our fourth quarter performance, review the operational progress we've made in 2025 and outline our key strategic priorities for 2026. Let me begin by reviewing our financial results for the fourth quarter, which were at or above the high end of our guidance ranges on both the top and bottom line. Total revenue was $61.5 million, down 1% year-over-year. We outperformed our revenue expectations on both subscription and professional services revenues. Adjusted EBITDA was $18.1 million, representing a margin of 29%, which was $1.1 million above the high end of our guidance. Our continued strong profitability performance is a testament to the underlying power of our business model and our ongoing expense discipline. We continue to generate solid cash flow, delivering approximately $55 million of unlevered free cash flow for the trailing 12 months. Our financial performance for 2025 compares favorably to the initial guidance we provided to investors last February. Setting appropriate expectations and delivering consistent financial results with transparency was one of the promises I made to investors when I became CEO, and I'm pleased that we were able to meet that objective in 2025. I would now like to review our operational performance for the year, supported by the 4 strategic pillars of data differentiation, integrations, customer success and innovation that we laid out for investors at the beginning of 2025. Before going into more detail, I do want to emphasize that we have made strong meaningful progress in each area and can confidently report that as we enter 2026 with a much stronger foundation for the future. While we are seeing improvements in all areas of focus, the expected benefits from these improvements will take time to fully be realized and that improvement trajectory is reflected in the 2026 guidance that Casey will review later. Starting with data differentiation. We delivered an important milestone in the second half of the year with the release of our fall expansion pack, which included bringing online a new claims data source. As you know, the claims market underwent a significant data disruption over the past 12 to 18 months. And with these releases, we have now restored our claims data volumes to above historical levels. Continuing to expand and strengthen our data assets with new elements that are not easily sourced remains foundational to our strategy. For example, we recently strengthened our core reference and affiliation data for health care executives and health care providers by adding mobile phone data. Overall, I am pleased with the progress we made in remediating the claims data market disruption, expanding our core data assets with new elements, ensuring our focus remains on maintaining our data differentiation and quality and expanding the value of our data over the course of 2025. This will remain a foundational priority going forward into 2026 and beyond. Our second pillar focused on seamless integrations. A core part of our strategy is ensuring it is as simple as possible for customers to utilize our data sets, proprietary software and analytical capabilities. Being an open platform is a foundational tenet of our product strategy, and we have successfully deepened the number of our integrations in 2025, including Snowflake, Databricks and the recent introduction of an important HubSpot integration in Q4. We launched a new pilot program with physician data and Salesforce, which we expect to be generally available this quarter. And we've been focused on increasing the automation of our integrations, which has dramatically shortened the time to integrate by about 25% over the course of 2025. This improves customer satisfaction and gets our data into the hands of our customers faster. Ensuring ease of integration to our customers' systems of record and systems of insight effectively improves retention as we know that those customers that are integrated will renew at higher rates than those that are not integrated. We are already seeing examples of this in action, including an important win in Q4, a large nonprofit academic affiliated integrated health system operating multiple hospitals, outpatient clinics and specialty service lines selected our population intelligence platform to enable more targeted segmentation within the region and surrounding markets. They needed to drive patient volumes across key inpatient and outpatient service lines while capturing additional market share. A core pain point was the significant internal effort required for data mining, layering, modeling and assumption-based analysis, which limited their ability to align resources around broader growth and strategy initiatives. Our seamless approach to integration and our agnostic capabilities that enabled flexible access to their systems were critical to this win where we delivered clean, enriched and actionable data directly into their existing workflows, allowing them to hydrate records and uncover incremental patient leads more efficiently. Turning to our third pillar, customer success. I am pleased with the improvement we have made throughout the year to improve customer satisfaction, ease of use and value-added services that will increase the stickiness of our solutions. While we will always be looking to iterate and improve our processes, I am confident that the steps we took in 2025 have built a strong, durable and repeatable customer engagement process. Retention improvement is more than just a customer success effort, though. Product development, data quality and GTM execution all play a significant role. The realignment of our focus across all functional groups working in service to a shared goal of improving the customer journey, including how they are compensated, is making a difference. Importantly, we have seen retention rates improve year-over-year for each of the past 3 quarters, including with the larger cohort of renewals we have in the fourth quarter. The impact of our coordinated customer-facing effort can be seen where our newly integrated commercial teams collaborated on an early risk identification, which proved critical in converting what was forecasted as a churn risk into a successful multiyear renewal. This example shows how proactive focus on addressing customer concerns will deliver tailored solutions that restore confidence in service of retention, not individual objectives. The integrated team approach with sales, support and success working together with a shared goal of producing happy customers benefits both the customer and our own retention goals. These changes are complex and took the early part of the year to put into effect with the impact showing improvement in the second half of the year. Intuitively, the improved sales, onboarding, training and success process will begin to show up as those customers experience the benefits in time. Therefore, we expect that the improved trajectory that we can already see will continue to accelerate, especially as the impact begins to show up in the new business we are signing now and starts renewing later this year without the legacy impact of prior disruptions from the claims situation or past organizational miscues. Finally, we had a notably successful year delivering against our fourth pillar, innovation and our focus on digital engagement. This pillar has been focused on several distinct sub areas. The first is digital activations, which enables customers to combine our data with other digital assets to generate actionable customer engagement. Over the course of the year, we signed nearly 30 agencies and already have more than 1/3 of them actively generating bookings for Definitive Healthcare. As a reminder, there is a natural lag between signing up of an activation customer or partner and when they begin generating revenue. We had ambitious growth plans for our activation business in 2025, and I am pleased to report that we outperformed this target. We are also tracking excellent progress in building from the agency activation channel, and we expect our early successes in this channel will make it easier to directly sign customer activation programs in 2026. Second is partnerships where we are building a dedicated partnership team that will help customers seeking syndication rights and new distribution channels. One example of this type of partnership was launched last quarter with Bombora and their curated ecosystem audiences. This platform helps distribute off-the-shelf and fully customizable audiences for activation on a variety of platforms such as The Trade Desk, Yahoo! DSP, Reddit or data marketplaces like LiveRamp. It extends the reach of our specialized intelligence and addressable audiences to the customer bases of these platforms that need to access comprehensive views of the health care organizations and professionals across the entire ecosystem. In addition, we see AI as a core enabling technology for growth that DH can harness with several important incumbent advantages. First, our proprietary data is our powerful foundation. Definitive is a data company first. AI presents a way to retrieve, analyze and harness data. Our advantage is the proprietary data itself, much of which is not publicly available as well as within our data curation system and processes. An AI model is only as good as the data it ingests and our advantage is taking today's high-performing AI models and applying them to our domain-specific proprietary and differentiated data. Second, in addition to the proprietary nature of our data, the longitudinal aspect of our data from over 15 years of intensive accumulation cannot be recreated. This data is critical to a customer that needs to understand how the health care ecosystem and its affiliations have changed over time. Third, contextual expertise. In-depth domain expertise is required to effectively operate as a trusted partner in health care, and our customers rely on us for that expertise. Competing in health care is complex. To provide effective AI workflow and analytics, it is essential to have that deep understanding of the complex relationships among the health care providers and their corresponding use cases, which require years of expertise to develop. Contextual relevancy and accuracy is required by this industry. The importance is evidenced by the fact that 60% of our largest life sciences customers leverage our advanced analytics expertise in addition to our data and half of our top 20 customers across all verticals rely on contextual domain expertise and advanced analytical insights. Finally, embedded customer relationships. As we integrate Gen AI into our products, beginning with our flagship view platform next quarter, our deep relationships with approximately 2,300 customers provide integration points for rapid deployment. Because our pricing and packaging strategy is based on value, not seats, the increased capabilities unlocked with Gen AI will drive both new use cases and adoption of new offerings such as digital activation. Almost 50% of our customers already integrate our data directly into their systems of insight and record via CRM connectors, APIs or lake-to-lake and our next-gen SaaS platform will offer another accelerant to our integrated strategic focus area, which we know drives increased retention. Overall, we have accomplished much in 2025, and I want to thank the entire Definitive team for delivering these improvements and advancing our strategy. In 2026, we expect to build upon the progress we made last year. The signs of success, especially in the second half of the year, have reinforced our belief that we have the right strategy in place. As we look ahead to 2026, our key priorities remain unchanged from our 2025 pillars. As noted above, different pillars are in different phases of maturation and delivering success. But as the year unfolds, we will be focused on investing incremental dollars in those areas showing the most promise. Given the success ramp we are seeing, we anticipate there will be opportunity to accelerate digital activation with our customers, extend our partnership and distribution efforts, and we have confidence that our Gen AI enablement of view will provide new and incremental upsell, cross-sell opportunities later this year. Our primary strategic objective remains that of returning the business to consistent revenue growth. Fundamental to that objective is improving retention, and we remain confident that the steps we are taking can and will deliver that outcome over time. While the macro environment remains challenging, we will continue to focus on those areas we can control, and we will be making the investments necessary to steadily improve operational performance. With that, I'd like to turn this over to Casey to discuss our financial results in greater detail. Casey?