Thank you, Mark, and good morning, everyone. In addition to the earnings press release issued this morning, we announced a leadership transition plan to guide Lantheus into its next chapter of long-term growth. As a part of this plan, I will retire from Lantheus at the end of this year and transition into an advisory role. Mary Anne Heino, our current Board Chairperson and prior CEO, will assume the role of Executive Chairperson now and serve as interim CEO following my retirement. This structure allows Mary Anne and me to work closely together with our leadership team to ensure a smooth transition over the coming months. Mary Ann led Lantheus as CEO for 9 years, driving significant growth throughout her tenure before becoming Chairperson in early 2024. With her extensive industry experience and deep knowledge of Lantheus, Mary Anne is well-positioned to continue executing our strategy and driving momentum while we prepare for the expected launch of our new F-18 PSMA PET formulation. The Board has initiated a comprehensive CEO search led by our Lead Independent Director to identify and appoint our next CEO, who will build on our strong foundation. We also announced that our President, Paul Blanchfield, will be leaving Lantheus for a new opportunity. We thank Paul for his many contributions and wish him continued success in his new role. I would also like to note that Amanda Morgan will return from leave and continue in her role as Chief Commercial Officer, reporting directly to Mary Anne. Before Bob and I review the business performance, I want to express what an honor it has been to serve on the Board and lead such a talented and purpose-driven group of employees at Lantheus. I am proud of our collective achievements and the remarkable progress we've made to strengthen Lantheus' position as the leading radiopharmaceutical focused company. We executed a series of strategic transactions, including the acquisitions of Life Molecular Imaging, Evergreen Theragnostics and Meilleur Technologies, along with key licensing agreements. These transactions diversified our revenue streams, expanded our capabilities across the radiopharmaceutical value chain and positioned us for successful regulatory submissions. Most importantly, they enabled us to build a robust and innovative pipeline of radiodiagnostics, including advancing our position in the growing Alzheimer's disease imaging market and our early-stage radiotherapeutic products. Now turning to the Lantheus results. In the third quarter, our top priority was and remains executing our commercial strategy to maximize the long-term value of our prostate cancer franchise. Our PYLARIFY results for this quarter reflect our ongoing efforts to maintain a disciplined approach to pricing and to raise awareness of PYLARIFY's clinical differentiation. The pricing stabilization across our accounts that began early in the third quarter has continued and actions we implemented in the second and third quarters to maintain our market leadership will continue to play out over time. Looking ahead, we are preparing for the potential approval of our new F-18 formulation in 2026. We anticipate this will qualify for 3 years of transitional pass-through payment status, supporting our PSMA PET franchise growth beginning in late 2026 and into 2027. Now turning to PYLARIFY. Sales were $240.6 million during the quarter, down approximately 7% year-over-year, with U.S. volumes up 3.3% and down slightly sequentially due to seasonality, both consistent with our expectations. And further to that point, large institutions continued to diversify their PSMA agents across PYLARIFY and gallium-68 agents, while smaller accounts grew in line with market rates. Importantly, our educational efforts and customer feedback reflects increasing recognition of PYLARIFY's clinical value. And anecdotally, we are seeing some sites return after trialing alternatives. As I mentioned earlier, signs of pricing stabilization persisted throughout the third quarter and into October. We are preparing for the expected launch of our new F-18 PSMA PET formulation, which optimizes the manufacturing process to potentially increase batch size by approximately 50%, which could enhance production efficiency, supply resilience and enable increased patient access. We plan to introduce this new agent to the market following the receipt of coding, coverage and reimbursement, including a HCPCS code and transitional pass-through payment status. We expect this plan to level the reimbursement playing field. For the remainder of '25, we expect low single-digit volume growth offset by further price compression as 340B or best price resets in the fourth quarter as a result of the 2-quarter lag in government price reporting, reflecting price concessions offered in the second quarter. Importantly, we do not anticipate any material changes to 340B from the fourth quarter into the first quarter of 2026 as PYLARIFY's in-market best price remained consistent from the second quarter to the third quarter of this year. These resets are factored into our guidance, and we are actively mitigating the impact through targeted commercial strategies. Our focus remains on preserving the long-term value of our PSMA PET franchise. DEFINITY continues to deliver consistent performance, growing more than 6% year-over-year despite experiencing slight unfavorable customer mix in the quarter. We remain confident in DEFINITY's market leadership and the continued growth of the ultrasound-enhancing agent market. DEFINITY's success continues to be anchored in its proven clinical and commercial value at 24-year track record of clinical application and continued customer satisfaction. Turning now to our neurology franchise. We see significant growth potential in the U.S. Alzheimer's disease radiodiagnostic market, driven by rising prevalence, expanded PET imaging guidelines and increasing use of amyloid beta and tau PET imaging agents alongside disease-modifying therapies. Today, there are 2 approved therapies and more than 100 in development, including approximately 30 tau-directed therapies and 40 beta-directed amyloid therapies, underscoring the critical role PET imaging can play in diagnosis and treatment selection. In the third quarter, Neuraceq delivered sales consistent with expectations. Neuraceq is our F-18 PET imaging agent used to detect beta amyloid plaques in patients being evaluated for Alzheimer's disease and select patients for amyloid beta-directed therapy and is already enhancing the depth of our relationships with nuclear medicine customers and our manufacturing partners. Our strategy for Neuraceq focuses on 3 main priorities: first, expanding geographic coverage to ensure broad access across leading Alzheimer's centers and community practices, including with the recent addition of 2 new PMFs in Southern California and Illinois. Neuraceq, has growing geographic coverage in the U.S. across 20 PMFs, and we plan to launch 6 additional PMFs in '26. Second, improving availability and scheduling flexibility; and third, leveraging revised appropriate use criteria or AUC, and updated benefit manager guidelines, which recommend repeat scanning. We are advancing MK-6240, RF-18 PET imaging agent for detecting tau in adults being evaluated for Alzheimer's disease, and the FDA has set a PDUFA date of August 13, 2026. Our NDA submission was supported by data from 2 pivotal Phase III clinical trials, which evaluated MK-6240's performance in detecting tau pathology in early Alzheimer's disease. These studies met their co-primary endpoints of sensitivity and specificity to detect tau tangles. MK-6240 previously received fast track designation reinforcing its potential to address a significant unmet need in Alzheimer's disease diagnostics. We believe PET imaging is foundational to the diagnosis and management of Alzheimer's disease. The recent FDA approval of blood-based biomarkers is an important advancement, enabling earlier identification of patients. We believe these tests will expand the readily addressable market over time and complement, not replace the critical value PET imaging provides in visualizing and quantifying disease. In addition to our work progressing our new F-18 PSMA PET formulation and for MK-6240, we also are planning for potential approval of LNTH2501 which is also known as OCTEVY, which is a PET diagnostic imaging kit targeting somatostatin receptor-positive neuroendocrine tumors or as we commonly refer to them, NETs. If approved, LNTH2501 may complement Lantheus' therapeutic candidate, PNT2003 as part of a theragnostic pair, advancing the company's strategy to deliver integrated diagnostic and therapeutic solutions for patients with cancer. These 4 products strategically diversify our business and further solidify Lantheus' position as the nuclear medicine partner of choice. As we execute our strategy and advance our leadership in radiopharmaceuticals, we remain focused on delivering strong financial performance and disciplined capital allocation. To provide more detail on our third quarter results and outlook, I'll now turn the call over to Bob.