Thanks, Tim. Good afternoon, everyone and thank you for joining us. We are very pleased with our strong start to the year highlighted by a number of record achievements in the quarter. This includes: record revenue which was well above the high end of our guidance range; record ACV Capital attach rates; and record margins in ACV Transport. While we benefited from positive market tailwind from the quarter, it was continued execution by the ACV team that drove market share gains, while also delivering to the bottom line. Looking at the balance of 2023, we expect the industry headwinds experienced over the past two years to continue to moderate, while remaining focused on growing market share, expanding our technology moat and driving scale to deliver on our adjusted EBITDA target. With that, let's turn to a brief recap of first quarter 2023 results on slide 4. First quarter revenue of $120 million was $10 million above the high end of guidance resulting in 16% growth year-over-year. GMV of $2.4 billion was flat year over year with solid unit growth in the quarter offsetting an 8% decrease in GMV per unit as wholesale vehicle prices decreased from historical highs in the first half of 2022. We sold 152,000 vehicles on our marketplace, which was 21% sequential growth from last quarter and 8% growth year-over-year, which exceeded our expectations due to continued market share gains and conversion rates improving from low levels we experienced in the back half of last year. On slide 5, I'll frame the rest of today's discussion around the three pillars of our strategy to drive long-term shareholder value: growth, innovation and scale. I'll begin with growth. On slide 7, we're again providing context on the dealer wholesale market in relation to the broader automotive market. In Q1, new light vehicle SAAR increased 8% year-over-year, which is the third quarter in a row of growth. Of course, SAAR is still running about 12% below pre-pandemic levels. But inventories are slowly building which is key to a more robust recovery in retail sales. Used vehicle retail sales increased quarter-over-quarter in Q1, but were down in the mid-single digits year-over-year as affordability issues impacted demand in segments of the used vehicle market. Combined new plus used retail sales increased modestly year-over-year, which is a positive sign for supply in the wholesale market. As I mentioned earlier, conversion rates bounced back in Q1 as wholesale price depreciation normalized. And we assume conversion rates will normalize throughout the year. On balance, I think, it's fair to say that end market conditions are showing some early signs of improvement giving us confidence to raise guidance for the year, which Bill will take you through later. Turning now to slide 8. We estimate that the US dealer wholesale market continues to remain below normalized volume, but showed a nice sequential improvement in the seasonally strong first quarter. We remain focused on executing against our key growth initiatives and gaining market share. Given our 8% year-over-year unit growth and an estimated market contraction of 11% this implies that ACV grew market share by approximately 19% in Q1. Next, I would like to wrap up the growth section with highlights on our value-added services. On slide 9, I'm pleased to share that ACV Transportation delivered another impressive quarter and continues to scale ahead of schedule. Our strong carrier network and fast cycle times resulted in attach rates once again exceeding 50%. In fact, we achieved record cycle times again this quarter, benefiting both sellers and buyers on our marketplace. Over 80% of our transports were automatically dispatched in Q1, which is a great example of how our technology investments are driving growth and operating efficiencies. These efficiencies resulted in revenue margins in the mid-teens, which is impressive given that ACV Transport was breakeven a year ago. As a reminder, our current 2026 financial targets assumes Transport revenue margins of 15%. So we managed to achieve this target three years ahead of plan. Turning to slide 10. Our ACV Capital team also delivered great Q1 results. Capital attach rates exceeded 10% for the first time, driving over 85% loan volume growth. And combined with RPU expansion resulted in over 100% revenue growth. We have continued to ramp our investments to drive dealer engagement and scale to ensure that ACV Capital is an important growth and profit driver going forward. Turning to the second element of our strategy to drive long-term shareholder value innovation. On slide 12, I'd like to highlight a few of our growth-oriented product innovations that helped contribute to our strong Q1 results. Two areas of focus were dealer acquisition and conversion rates. On the dealer acquisition front, solutions like private marketplaces and consumer sourcing tools like Drivably and Monk were key to attracting new dealers to ACV's marketplace. This was especially true with large dealer groups, which continue to be an attractive source of new dealer partners. Next, we expanded several capabilities to enhance conversion rates, including new auction formats and pricing intelligence. As you know, ACV's traditional format is a 20-minute live auction, which has experienced broad market adoption. Based on dealer feedback, we began testing new formats and the results were very encouraging, especially on higher-end vehicles. In just a few short quarters, we now have about half of our auctions running for two hours. And our strong Q1 conversion rates demonstrates this is working. We will continue to invest in testing enabling us to continuously optimize auction formats for different types of vehicles. Additional innovation enabling our growth is our pricing engine, powered by machine learning leveraging both our industry-leading vehicle condition data and a growing curated automotive dataset. This innovation is leading to better guidance for our dealer partners. For the past year, we've expanded the price point coverage, and its use cases creating a broader range of guidance for our dealer partners. The ACV pricing engine now powers several ACV products, including ACV Auctions Market Report, consumer tools such as Drivably and elements of MAX Digital. On slide 13 are examples of tech investments that extend into our operations, delivering customer success while reducing costs. In Q1, our costs of revenue declined year-over-year despite delivering 16% revenue growth. As I mentioned earlier, ACV Transport was a key contributor to these results. We also benefited from lower arbitration frequency, which reflects ACV's investment in technology and inspector training. Several innovations that are improving inspection accuracy and efficiency are Apex, Copilot and ArbGuard. Our next-gen collection device Apex delivers significantly higher transparency into vehicle operating conditions, while also increasing the inspection productivity of our VCI teammates. More recent innovations like Copilot and ArbGuard, leverage machine learning predictive analytics, and sensor data to inform our VCIs on vehicle-specific issues before and after conducting an inspection again driving inspector accuracy and efficiency. To wrap up on innovation, I think you'll agree that our team is delivering industry leading technologies to the market and our own operation. We have an exciting roadmap of innovation to drive both growth and scale, and we look forward to providing more detail at our Analyst Day in June. With that, let me hand it over to Bill to take you through our financial results and how we're driving growth at scale.