Thank you, Chief. Good afternoon, everybody. Thank you for joining Penumbra's third quarter 2021 conference call. Our total revenues for the third quarter were $190.1 million, a year-over-year increase of 25.8% as reported and 25.6% in constant currency and a 3.2% sequential increase from the prior quarter. For the third quarter of 2021, we recorded operating income of $8.8 million, or 4.6% of revenue, compared to an operating loss of $20.2 million or 13.3% of revenue during the same period last year. Against the backdrop of this spreading Delta variant particularly in the first part of the quarter, our team executed very well. Our vascular business achieved record results. And our neuro business nearly matched a record quarter as well. Our business was exceptionally strong in the United States, where our latest products in both vascular and neuro thrombectomy are experiencing strong adoption. Overall, our business accelerated throughout the quarter driven by the Red series of stroke catheters and continued strength in vascular thrombectomy. While our immobilization business also performed well, especially as the fall season progressed, I also want to acknowledge our physician customers and hospital staff, who against challenging circumstances, especially with COVID work particularly hard to take care of their patients. As a company, we think we are in the best position we've ever been to help more patients than ever before. As we look forward and the world emerges from this pandemic, the three key dynamics that have defined Penumbra, constant innovation, hiring the best people and execution once again to find our work in the third quarter and give us a lot of confidence that we can deliver strong durable growth for years to come. As it relates to hiring the best people we are adding remarkable people to the Penumbra team. In addition to the new engineers, other professionals and best-in-class salespeople that we added, I would like to call your attention to new senior additions. Fred Hobart and John Christiansen recently joined us with decades of senior medical device experience. Fred will lead international commercial efforts as Senior Vice President focused on areas outside of Europe and North America. John will lead our efforts in Europe and the Middle East as Vice President and Head of Europe. Also Riley Russell, a former senior executive at Sony Interactive Entertainment, working on Sony PlayStation and third party developers, has joined us as Executive Vice President of Third Party Partnerships for Immersive Healthcare. And Amir Rubin, the former CEO of Sixense is leading our research efforts for Immersive Healthcare as Executive Vice President of Research for Immersive Healthcare. Also, we will continue to promote, as well as add additional senior members to the team in the quarters ahead. Now let's focus on our products. Starting with our vascular business, we reported growth of 40.3% year-over-year to $105.5 million in the third quarter, vascular thrombectomy revenue increased 10% sequentially in the United States, with strong performances across venous, PE, arterial and coronary, we continue to see accelerating growth in new physician customers, adopting our thrombectomy products in the third quarter, which we think is a testament to both excellent patient outcomes and the value proposition our proprietary Computer Aided lightening thrombectomy system brings to the healthcare system. We are focused on the opportunity to expand the paradigm of single session therapy to many more patients going forward. As evidenced by strong results in the third quarter, our computer aided lightning technology is resonating with an increasing number of physicians, and is becoming an integral part of the treatment algorithms in PE, venous and arterial procedures. Indeed, both Lightning 12 and Lightning 7 produce strong growth in the quarter, growing double digit sequentially in the US. Like other unique and transformational products we have developed, our Lightning platform is the product of our focus on constant innovation, dedicated to what's truly important to successful and safe outcomes for patients, and the most talented team of engineers and product development professionals in the industry. Moreover, we continue to invest in innovation, clinical studies and market development initiatives to reach the 90% of patients that can still benefit from this technology each year. In sum, we are just getting started and our team's work continues. Moving to coronary, we continued seeing an accelerating number of physicians utilize cataracts to treat their patients in the quarter. We have a tremendous opportunity ahead of us with cataracts having reached only about 10% of the coronary patients; we believe we can help the most those with high thrombus burden. Also, we look forward to the presentation of results of the CHEETAH study, which will be highlighted during the featured clinical research session at the upcoming TCT conference in Orlando, Florida in two days on Friday, November 5. I will be in attendance and I hope to see many of you there. Within our vascular immobilization business, we matched our record second quarter results notwithstanding Q2 benefited from some catch up in deferred procedure while this quarter faced a modest COVID headwind, the uniqueness and breadth of our vascular immobilization portfolio continues to resonate with physicians who are finding more reasons to use our products in both chronic and acute settings, including continued strong adoption of Ruby LP, which had another record quarter. Let me now turn to our neuro business, in which we recorded growth of 11.5% year-over-year to $84.7 million in the third quarter. The neuro team has done incredible work alongside our physician customers throughout this pandemic, the initial launch during the quarter of RED 72 and RED 68 in the United States went extraordinarily well, paired with RED 62, The RED series expands upon our US stroke portfolio, which recorded robust 17% sequential growth this quarter. Physicians in the United States have responded very positively to the RED series. The extraordinary tractability and clot removal capabilities of the RED series, driven by our new red glide coding technology and proprietary catheter architecture are unrivaled in the field. And the breadth of the RED series allows physicians to choose the catheter that best matches the patient's vessel size. In sum, the RED series is designed to give physicians the technology they need to use aspiration as frontline treatment, and maximize the ability to achieve first task success. One of the hallmarks of our neuro business is portfolio breath. With our stroke, access and embolization franchises complementing each other extraordinarily well. Our neuro access business produced another record quarter led by continued adoption of BMX96 and strong international growth. Our neuro embolization business nearly matched our record Q2 results, notwithstanding the COVID related headwinds to these types of procedures in the third quarter. In sum, we expect momentum to continue in our neuro business as we continue to invest in our team, our innovation engine, and important initiatives to expand access to our neuro products to more patients going forward. Let me now turn to our Immersive Healthcare business. We hosted an Investor Day in late September that marked a monumental moment for Penumbra. In addition to announcing the acquisition of Sixense, a leader in virtual reality technology and our long time partner, we outlined plans to build a platform to provide immersive therapy to 10s of millions of patients across a broad range of healthcare settings. The combination of our proprietary hardware, tracking technology, software and unique content sourced from our own studio, second party partners as well as a robust group of third party developers define the real platform and the ecosystem we plan to build, as we try to help over 15 million patients in the US alone. The feedback we have received since this event from the healthcare community has been extremely positive. We are dedicated to the important work ahead. Turning to our international markets, China continues to be a strong contributor to our business, and we see significant opportunities for additional growth well into the future. In addition, we continue to see good momentum in our Japanese business, where we look forward to introducing our latest stroke in neuro products, our entire vascular product portfolio, and eventually our immersive healthcare platform in the future. Our EMEA, Latin America and Asia Pacific businesses all showed solid growth year-over-year. And we think there are many opportunities to expand our presence in each one of these geographies going forward. Overall, notwithstanding the challenges all companies are facing, we are confident that we are set up to help more and more patients with our existing and future products across all of our product categories and geographies. I would now like to turn the call over to Maggie to go over our financial results for the quarter.