Thank you, Erika. And thank you everyone for joining us today. I'm pleased to be together with all of you for my first earnings call with Novavax. And I'm excited to have the honour of helping to shape this new chapter in the company's history, in partnership with our Board, our leadership team, and all of our employees. After spending 25 years in the pharmaceutical industry, and having led the growth of several different organizations to become mature commercial entities, there are a few key factors that drew me drew me to Novavax, including their validated and innovative technology platform, which has produced a differentiated and effective COVID 19 vaccine, a pipeline of additional assets and their adjuvant matrix M that together offer the potential to create significant value for the organization. There are fully integrated set of capabilities, ranging from discovery and manufacturing, to commercial execution on a global scale. And finally Novavax’s people and company values, which have cultivated a mission driven culture dedicated to improving global public health. Today, I would like to share a few insights from my first five weeks at the company and outline our near term priorities before handing it over to additional members of our leadership team to discuss our results from the previous quarter. So let's talk about my observations during the first five weeks. Since joining Novavax in late January, I've spent my time listening, learning about the business and gaining perspective from key stakeholders across our organization. Though I will certainly continue to listen and learn for months to come as they visit our global facilities and meet all of our amazing employees, customers and partners. I've had the chance in these initial weeks to gather some early insights, and to gain an initial picture of our current business, our capabilities, and our challenges. These early interactions have made it clear to me that we need to focus our entire organization on a few key priorities, which I believe will give us the best chance for success and 2023. Importantly, they have also reinforced to me the remarkable technology, capability set and talent that we have as a company and the opportunity we have to build long term value by leveraging the foundation that has been laid to date. So let's take a moment and talk about our near term priorities. While the significant investments made to build the company over the past three years were necessary for Novavax to deliver our first commercial product during a complex global pandemic. We are now seeing a more traditional commercial market emerging as the pandemic settles into an endemic face. This new emerging commercial market will require the company to adjust our level of investment and our plans to better align our efforts with this opportunity. In fact, the leadership team and I have already taken decisive actions together during my first few weeks, with this in mind. These actions are intended to focus our efforts on the things that we believe are most important to our near term success, while at the same time reducing our spend, and our resource commitments in areas that may no longer be aligned with those goals. I'd like to take a few minutes to share with you these priorities and some of the actions we've already taken since my arrival. Priority one, deliver a competitive product for the upcoming 2023 fall vaccination season. We are a global company, and our intention is to deliver an updated COVID vaccine that aligns with public health recommendations. Additionally, we intend to make this product available in smaller dose files, which we know is important for our customers. Together these factors are intended to help ensure we are well positioned to compete as markets move from an advanced purchase agreement to a commercial orientation overtime. Importantly, globally, we do not yet have full clarity on strain selection for the upcoming 23 fall vaccination season, which will be an important factor for us as we update our vaccine. In the US, for example, we are working in partnership with the FDA to inform them about what we will need in order to deliver our product, including the timing of strain selection, and the nuances of our own manufacturing process as a protein based vaccine. Let's move on to priority two. Reduce our rate of spend, manage our cash flow and evolve our scale and structure. Since my arrival, we have taken immediate steps to reduce our rate of spend better align our investments with our near term priorities, and focus our efforts and energy with the intent of delivering a successful launch this fall. I have already taken an important initial step to evolve our structure by modifying the organization of our executive leadership team, which we discussed in our earnings press release. These changes will allow us to better align our internal resources, operate more efficiently and helped to position us for long term success. Highlights of these changes include the appointment of Elaine O'Hara as our new Chief Strategy Officer who will focus on business and corporate development, portfolio strategy and Alliance management. Elaine brings to the organization over 15 years of senior Strategic and Commercial leadership experience in vaccines and infectious disease, including Chief Commercial Officer in North America for Sanofi vaccines and senior roles at both Otsuka and Pfizer. In addition, Dr. Filip Dubovsky will assume the role of President Research and Development, following the retirement of Dr. Greg Glenn. Right we'll move into a consulting role as a strategic R&D adviser to the company. Silvia Taylor, who’s a Chief Corporate Affairs and Advocacy Officer with expanded responsibility including government affairs, policy and advocacy. Troy Morgan, our Chief Compliance Officer will remain in his role and now report directly to me as CEO in order to elevate our company's focus on compliance. And finally, investor relations will move under our CFO Jim Kelly, among other changes. In the coming months, we will be assessing our global structure in more detail with these priorities and long term value creation in mind, and look forward to sharing any additional potential changes with you during future calls. You will hear more today about how we are reducing and streamlining our investments from Jim Kelly, later in the call. And finally, priority three, leverage our technology platform, our capabilities, and our portfolio of assets to drive additional value beyond new alone. Beyond our COVID 19 vaccine and the near term opportunity for the fall ‘23 vaccination campaign, we have a differentiated technology platform, a global footprint with a fully integrated capability set and a portfolio of promising assets, including a COVID-19 influenza combination vaccine in Phase 2, with data expected mid-year, that presents significant opportunity for value creation. It is our intention to unlock the potential of these assets and capabilities, both in the near term and over time, via different strategies, including but not limited to business and corporate development. This could include the potential for out licensing, partnering, co-promotion and or other related activities. To further align our resources against this objective, I have added the new role of chief strategy officer to my executive team as mentioned earlier. As part of a role, Elaine will be undertaking a strategic review of our pipeline, including an assessment of how we will prioritize our pipeline investments. We have already decided to pause clinical development on RSV, which Phillip will discuss in more detail. As noted in my opening comments, I have been trying to learn as much as I can during my first few weeks at Novavax. And although I still have a lot to learn as I continue to get to know our business, what I can say for sure already, is that I have truly been impressed with the energy and talent of this team. Impressed with our technology and the remarkable set of assets and capabilities we have built as an organization on a global scale, and importantly, the significant opportunity for future growth and value that this represents. At the same time, I'm aware that over the past few years along this journey, we have experienced both highs and lows. And although the company has achieved many successes along the way, we have also experienced some disappointments. I would like to take a moment today to pledge to you our commitment to be transparent about our opportunities as well as our challenges to provide balance and perspective about the near term and future priorities we are focusing on and with humility to admit the challenges we face. I would like to say thank you to all of our investors, our partners, and the consumers of our vaccine for your faith and us. And in this opportunity. And for your patience as we now lead Novavax down a path towards a new and exciting future. The road ahead will be filled with potential opportunity, as well as some significant challenges. And it won't be easy. But we commit to give you all our energy and our effort with a goal of success. And we made fall through along the way. But if we do, we'll work hard to correct our path and be continuously thankful for your belief and our potential. So let me close my opening comments by saying in the coming months, we are committed to maintaining a strong focus on the priorities I shared with you today with the goal of strengthening our position as a company in the near term, and putting us in a good position for future growth and success. With that, I would like to hand it over to the team to discuss our results in more detail, beginning with John Trizzino, to provide an update on our commercial activities on Slide five. John?