Good afternoon, everyone. Thank you for joining us to discuss our fourth quarter and full year 2025 results. As we stand here at the beginning of 2026, I'm incredibly proud of the progress our team made over the past year and the momentum that we have today. 2025 was the year we validated our winning MRD strategy. 2026 is the year we expect to scale. Physicians increasingly trust our NeXT Personal test. Our Clinical volumes are building, and our strategic road map is being validated by the medical community. For those listening in for the first time, Personalis is a leader in MRD testing services, and we're helping patients, partners and doctors see more in cancer samples. We operate at the leading edge of MRD sensitivity. Our ultrasensitive NeXT Personal test is capable of detecting approximately single fragment of tumor DNA at 1 million. This is not merely a technical improvement. It's a Clinical necessity. This level of sensitivity allows physicians to detect cancer recurrence months ahead of standard imaging and provides them with far greater confidence in a negative result. The Clinical market for these types of tests known as Minimal Residual Disease or MRD test is growing rapidly and is expected to mature into a $20-plus billion opportunity, and Personalis is exceptionally well positioned to command a significant share of that opportunity. Beyond Clinical testing, we remain a leader in supporting biopharma companies through Clinical trials and drug development. Our platforms are used by our partner companies to analyze tumors and identify new biomarkers serving as the foundation for the next generation of personalized therapies. We are the engine that supports researchers as they explore new treatments and allow physicians to personalize treatment for every cancer patient. Now turning to our results. The headline of our performance is our explosive Clinical growth and our achievement of 2 Medicare coverage decisions. In the fourth quarter, we delivered 6,183 Clinical tests, this represents a 41% sequential growth over the third quarter of 2025 and a 329% increase year-over-year. Now to put that in context, in Q4 of 2024, we delivered just 1,441 tests. Our performance this quarter reflects the strong uptake of NeXT Personal in the marketplace. For the full year of 2025, we delivered more than 16,000 Clinical tests, growing 394% over 2024. We achieved $17.3 million of revenue in the fourth quarter, in line with our preliminary announcement last month. Our full year revenue of $69.6 million reflects a transitional period for our top line. As we previously discussed, we've shifted our commercial focus from lower-value project work to higher-value MRD partnerships, which meant that we experienced a nearly $20 million year-over-year decline in revenue from Natera while we set the stage for growth with our MRD engine. The uneven biopharma spending environment we discussed last year has persisted, creating variability in the timing of large project-based translational research. However, it is critical to note that the underlying demand for our strategic MRD offering remains exceptionally strong. We grew our MRD biopharma revenue by nearly 240% over 2024. We believe we are the partner of choice for biopharma companies who need to see what others cannot. And we expect penetration of our MRD testing into biopharma companies to be a growth driver for years to come. NeXT Personal has the potential to help these partners fail in early Clinical trials sooner, succeed in these trials quicker and enroll the right patients into their studies. Now innovation is the heartbeat of Personalis. Just as we've led the way in pioneering ultrasensitive MRD detection down to 1 part per million, we recently announced the next evolution of our NeXT Personal MRD test, our real-time variant tracker report. Cancer changes over time, and it can change in reaction to treatment. The real-time variant tracker allows for the detection of mutations targetable with therapy and the identification of resistance mutations during MRD surveillance with NeXT Personal. As an example, in metastatic HR-positive breast cancer patients, the ESR1 gene can acquire mutations over time that cause resistance to the hormone therapy patients may be receiving. Knowing when these mutations can happen allows physicians to adjust therapy proactively. The addition of this opt-in report is intended to give clinicians a dynamic window into how a patient's cancer is evolving in real time. We announced the early access program for this module for Clinical and academic leaders in January of this year. The feedback from early discussions with doctors has been positive, and we believe this provides a powerful new tool for physicians as they seek the best possible outcome for their patients. This new addition to NeXT Personal underlines our continued innovation in MRD and most importantly, our commitment to innovate for patients. Looking ahead to 2026, we expect total revenue to be in the range of $78 million to $80 million. However, to understand the velocity of the business, you must look at our strategic growth engines, that is, our Clinical revenue and our biopharma MRD revenue. We expect our strategic revenue to grow from approximately $14 million in 2025 to a range of $30 million to $32 million in 2026, which would be roughly 121% growth driven by the expectation that Clinical volumes will quadruple. I will now dig deeper into the 3 pillars of our Win-in-MRD strategy that are driving us forward. The first pillar is Clinical adoptions. Now the numbers speak for themselves. Last quarter, we had more than 900 oncologists ordering our test, and we're seeing strong retention among those who adopt NeXT Personal. We're scaling our commercial footprint to onboard more oncologists and drive testing volumes. We now have more than 10 dedicated reps in the field working in close coordination with our partner, Tempus. In 2025, we expanded our relationship with Tempus to include colorectal cancer, and our commercial efforts are fully aligned to champion the market shift towards ultrasensitive MRD testing. We're setting our initial 2026 annual volume guidance at 43,000 to 45,000 tests, which would be about 170% growth year-over-year. This underscores the tremendous momentum we are seeing and our confidence in our commercial team and our physician partners. Our second pillar is building Clinical evidence and the data we need to support continued positive reimbursement decisions. We made massive strides here in 2025. We submitted 3 dossiers for coverage to Medicare, backed by industry-leading Clinical data. In the fourth quarter, we successfully achieved Medicare coverage for breast cancer with favorable pricing. And just a few weeks ago, we received Medicare coverage for lung cancer. These coverage decisions validate the value of our technology and changing patient lives, and I'm proud of our team for these accomplishments. Both reimbursement frameworks are for ongoing cancer surveillance for patients, so our test can be used at multiple time points along the patient's cancer journey and across many years. We currently have an additional dossier under review with MolDX for the use of NeXT Personal to monitor immunotherapy in metastatic cancer patients. Though exact timing remains subject to MolDX review, we remain confident in our data. Our drive towards coverage has been powered by data and the strong performance of our NeXT Personal test. These last several months, we continue to build upon our foundation to transform Personalis from a high-growth testing company into a high-margin reimbursed Clinical powerhouse. The landmark studies with TRACERx, Royal Marsden and VHIO published in cells, Annals of Oncology and Clinical Cancer Research, respectively, are the anchors of our evidence base. The TRACERx lung cancer study is one of the largest, longest and most rigorous lung cancer MRD studies to date with over 400 patients. In this study, NeXT Personal showed exceptional sensitivity and specificity throughout the patient journey from diagnosis to surveillance even in lung adenocarcinoma, the most common yet difficult to detect subtype. Our Royal Marsden breast cancer study also showed exceptional sensitivity and specificity across HR-positive, HER2-positive and triple-negative breast cancers with 15-month plus medium lead time ahead of imaging. The VHIO study across 24 cancer types showed that advanced cancer patients receiving immunotherapy who achieved durable molecular clearance had 100% overall survival. The Pan-Cancer UCSD I-PREDICT study was just published in npj Precision Oncology, and it showed that NeXT Personal identified molecular progression and medium of 161 days over 5 months before imaging in late-stage cancer patients receiving immunotherapy. Yale University is leading the case study to demonstrate the utility of NeXT Personal in breast cancer. Furthermore, our prospective B-STRONGER-1 trial in triple-negative breast cancer is well underway, having now enrolled more than 200 patients. Overall, we're now involved in 35-plus additional studies that are powering the next generation of evidence, and that number just continues to grow. In 2026, we're focused on neoadjuvant breast cancer and colorectal cancer and submitting for coverage there. As a reminder, we've presented data earlier from PREDICT and SCANDARE. Those studies showed the power of NeXT Personal in neoadjuvant breast cancer and the British Columbia Cancer study showed the power of the technology in colorectal cancer. The third pillar is leading in the biopharma sector. MRD or NeXT Personal biopharma revenue grew nearly 240% this past year. Biopharma companies are realizing that to prove the efficacy of their next-generation therapies, they need the most sensitive detection tools available, and this has led to our success in driving their adoption of NeXT Personal. We made tremendous strides this last year with biopharma companies in terms of their adoption of NeXT Personal. As a part of that progress, our business has been evolving towards more prospective work where revenue from a project is spread out over several years compared with retrospective analysis where an entire study is analyzed in one batch. In 2026, we expect our biopharma revenue to be in the range of $20 million to $21 million. This growth in our core MRD offering is expected to propel our entire biopharma segment, providing a stable and high-value revenue stream that complements our Clinical expansion. In closing, Personalis is a different company than it was just a year ago. We've proven that we can build world-class Clinical evidence and win Medicare coverage, and we've proven that our technology is the gold standard for sensitivity. We're starting 2026 with the winds at our backs and the confidence that we are winning in MRD. Changing the way medicine is practiced is never easy, but progress like we've seen over the past year shows our efforts have been worthwhile. I want to thank our employees and collaborators for a great year and thank our biopharma partners, physician champions and their patients for trusting us to provide results that truly matter. Thank you. And I'll now turn it over to Aaron to dig deeper into our financial results.