Thank you, Paul. We're proud to say fiscal '21 was a memorable year despite the challenges of the COVID-19 pandemic. It was a year in which we executed our IPO and continued to make strong progress toward our strategic transformation. Execution on our four major areas of transformation, manufacturing, growth market alignment, sales strategy and R&D strategy, are effectively driving revenue and profitability acceleration. As we wrap up the fiscal year, I want to put that transformation into context. First, in terms of manufacturing footprint, we delivered ahead of schedule on our plans to streamline our back-end operations. We also announced a planned sale of our Thailand facility, an important step to enhance our gross margins. In parallel, we supported record volumes, particularly in the strategic focus areas, while ramping up new suppliers. Despite the pandemic's negative impact on the first-half demand and the sharp second-half recovery, our experienced team responded quickly with a well-managed inventory and supply chain strategy, enabling us to support revenue levels nearly a year ahead of where we expected this time in 2020. Second, we strengthened our business in high-growth markets. Nearly 50% of Allegro's design wins in fiscal '21 were in strategic markets, another step function increase. Third, our sales team realignment increased our customer base to include more than 100 customers over $1 million of revenue. Our increasing presence in the distribution channel directly contributed to the outsized growth in our industrial business. Channel revenue grew from 30% of revenue in fiscal '20 to 37% of revenue in fiscal '21. Fourth is the successful execution of our transformational R&D strategy. In fiscal '21, the R&D team released major technology innovations on xMR for xEV transmissions, cordless current sensors or inverters in xEV and solar and the industry's largest portfolio of automotive-grade, 48-volt power products for xEV. The R&D funnel has never been better aligned with strategic growth areas, with roughly two-thirds dedicated to new growth opportunities. I'm also proud to report we reached a record total -- record for total patents issued, bringing our total to 1,117, an impressive number for a company of our size and a reflection of the strength of our IP. The progress on our transformation positions Allegro to not only benefit from the COVID-19 recovery but to deliver sustained growth through new products, new customers and high-growth markets at a margin profile that drives leverage and strong bottom line growth. Now let me turn to the business results of the fourth quarter. Starting with products, magnetic sensor ICs reached an all-time record, growing 7% sequentially and 16% year over year. This reflected strength in automotive but also strong pull-through in our industrial end markets. For the full fiscal year, magnetic sensor ICs grew 3% and represented 65% of revenue. Our power ICs were up 5% sequentially and an impressive 36% year over year, also achieving record revenue levels. Power ICs benefited from pull-through in automotive, contributing to system content gains and established beachheads in a variety of industrial applications through our expanding channel. For the year, power IC products grew 23% and represented 34% of revenue. Our industrial revenue for the fourth quarter was up 23%, well ahead of expectations. Throughout the quarter, demand momentum increased, with increased -- with extended auto visibility from our large industrial customers and our distribution channel. Outperformance was fueled by three applications, up double digits sequentially: data center; building and factory automation; and green energy. In data centers, customers are adopting our embedded fan controllers to replace more complex solutions at a faster rate than we anticipated. We're also benefiting from the customer transition from single-phase to three-phase architectures, resulting in nearly tripling of data center revenue for fiscal '21. In building and factory automation, demand increased in warehouse robotics and security and surveillance. And we ramp new business in traditional applications like variable frequency drives and industrial motors. And we had record demand for green energy applications, particularly solar, as well as new business and EV charging stations. Lastly, broad-based industrial coming off a strong Q3 declined sequentially but grew significantly year over year and was up 13% for the full year. Looking into fiscal '22, we expect all of our major industrial end markets to grow. We expect outsized year-over-year growth in Industry 4.0 applications. We expect our momentum to continue in data center at a faster pace than end market growth as we continue to increase share and content. And we expect the broad-based industrial business to benefit from a growing presence in the channel. Turning to the automotive end market. Revenue increased sequentially by 4% to a new high for the business and excellent result in an industry supply constrained environment. We are benefiting from both demand recovery and our market leadership position. Additionally, the strength of our customers' demand reflects three important market dynamics aligned exactly with our order strategy: First, customer demand is shifting from car to light truck and SUV models, which benefits Allegro given a higher ADAS content in these platforms. Second, carmakers are increasing value-added features on current models to maximize the profit, driving demand for our sensor and power products across ADAS and comfort and convenience applications. Third, we are seeing a meaningful shift to xEV. We expanded our xEV customer penetration to more than 50 customers globally, including all of the market leaders. Combined, ADAS and xEV represented 33% of the automotive revenue in the fourth quarter and is expected to increase as a percentage of mix in fiscal '22. As you know, we have been working to bring the LIDAR products we acquired last year to the automotive market. I'm pleased to report we are on track and customer interest is very high. We're at the early stages of sampling to auto customers and expect to be able to report design win progress later this fiscal year. We continue to target lighter automotive revenue in calendar '24. For the coming year, we expect continued growth in automotive driven by automakers' increased investments in electrification and ADAS while also biasing vehicle production mix toward feature-rich vehicles. The supply/demand imbalance will continue impacting our near-term growth rate, but we continue to see strong market share gains driven by our design win momentum. Finally, Allegro's other business benefited from end market recovery, particularly in IoT applications. Growth will continue to be offset in the coming year as the COVID-specific momentum we experienced in fiscal '21 in printers and peripherals, for example, revert to historical norms. As a result, we would expect the other business to be down in fiscal '22. Now for the outlook. We believe we have demonstrated that we have a resilient supply chain. But we are not immune, of course, to foundry constraints and the challenges of addressing quarter-to-quarter shifts in product mix. In our experience, supply constraints, particularly of the magnitude currently facing the industry, tend to get a little worse before getting better. For that reason, we anticipate the industry will continue to struggle to meet both real demand and customer desire to build inventory throughout our fiscal '22. We intend to invest where we can to satisfy customer demand. And we'll continue to make decisions to maximize the long-term potential of the business versus solely capitalizing on near-term opportunities. Looking at the outlook for fiscal Q1, we expect revenue to be in the range of $176 million to $179 million. Given current supply constraints, we expect the automotive and industrial business to be up. We expect our other business to be down slightly. We expect non-GAAP gross margin to be about flat, reflecting increasing input costs in a tight supply chain. We anticipate non-GAAP earnings per diluted share of $0.15 to $0.17. As we enter a new fiscal year with backlog and visibility at an all-time high, we also have a good deal to be excited about in terms of our R&D pipeline, the impact of the ramp of our recent design wins and the differentiation we are delivering from process innovation to circuit design. As we capitalize on this recovery, we expect that Allegro's technology, content and market share expansion and gross margin acceleration will be the foundation of our long-term story. We will now be happy to take your questions. Katie?