Thanks, Dave. Good morning everyone and thank you for joining us. Q1 was an excellent start to 2025 for ATI, continuing the strong momentum we built in the fourth quarter. Our focus is firmly on execution and our results reflect that. Demand remains strong in our core aerospace and defense markets. Customers continue to turn to ATI for our differentiated products, recognizing us as a critical supplier in their value chain. Our ability to deliver high quality consistently at scale has led to expansion of long-term contracts and increased share positions across key platforms. Before we discuss our growth drivers, let's look at the Q1 results we announced this morning. Revenues grew 10% year-over-year, exceeding $1.1 billion for the quarter. Adjusted EBITDA reached $195 million, surpassing the top end of our guidance range by $15 million. Adjusted earnings per share came in at $0.72, again beating the top of our guidance range of $0.55 to $0.61. And last week, we reported that 1,000 USW represented employees in our AA&S segment ratified a six year labor agreement. This is a good outcome for ATI and our team. It brings long-term labor stability to a critical part of our operations and sets the foundation for continued success. Don will walk through the financials in greater detail shortly, but the takeaway is clear. ATI started the year strong. We're confident in our position, particularly given the sustained strength in A&D demand. At the same time we're staying prudent amid the recent trade related uncertainty affecting the industrial markets. As such, we're maintaining our full year 2025 guidance for adjusted EBITDA and free cash flow as we monitor how the environment evolves. Our capital deployment reflects that confidence. We continue to prioritize returning value to the shareholders. In Q1, we repurchased shares worth $70 million in line with our plan. Looking ahead, we intend to repurchase as much as $250 million in the second quarter, effectively pulling forward our full year buyback program. We see clear value in our current share price and recognize the opportunity to capture it. Now, turning to the evolving trade and tariff environment, we recognize this is top of mind for many. While the headlines continue to shift, we remain confident in our view that ATI is uniquely positioned to navigate the evolving tariff and trade landscape. Here's why. One, ATI is a U.S. based producer with the majority of our production footprint located domestically even as we serve global aerospace and defense programs. Two, we have a flexible, diversified global supply chain. While certain raw materials must be imported due to the lack of domestic availability, our sourcing strategy allows us to adapt our supply chain to maintain quality and manage costs effectively. And three, our customer contracts are built to handle volatility. Many include built in mechanisms like pass-throughs and surcharges to help offset inflation, raw material swings and tariff costs. I'm pleased to report that to date these tools are working as intended, preserving income and limiting financial exposure. We're actively deploying all available levers, including duty drawback programs, defense related exemptions and ongoing operational efficiencies to mitigate remaining impacts. Let's talk about the tariffs announced in 2025 and currently in effect including those paused. These represent approximately $50 million in annual cost exposure prior to offset. Thanks to these mitigation offsets. We anticipate minimal impact on our full year earnings, allowing us to reaffirm our current guidance. From a demand standpoint, tariffs are having little effect on the aerospace and defense markets. Both airframers have recently reaffirmed robust backlog and ATI continues to see strong engine material orders with no cancellations or back pushouts. On the industrial side, which represents approximately 20% of our total business, some customers are taking a wait and see posture that impact, if any, would be confined to our AA&S segment. To illustrate how ATI creates value, particularly in A&D, consider a recent example. In Q1, we renewed a profitable sole source contract for an Advanced Alloys co-developed with a major engine OEM. This material is critical in MRO applications due to its unique performance characteristics. This agreement extends well into the next decade and reinforces ATI's role as a trusted partner in delivering high performance materials for the most demanding applications. Commercial jet engine remains our most strategic end market, accounting for 37% of total Q1 revenue. Sales in this area grew 35% year-over-year. Our alloys for the rotating components in the hot section of the current and coming generation engines are essential. We're the sole source supplier for five of the seven alloys found in the hot section, secured under long-term contracts that extend well into the 2030s and even 2040s. Our relationships span all three major commercial engine manufacturers. As engine production ramps up, ATI is growing with it. We're proud to earn contract extensions and increase share by consistently delivering innovation, quality and scale. Beyond engines, our airframe business is also growing, representing 18% of Q1 revenue. Our titanium capabilities are in high demand. We've just recently finalized a major new contract with a leading airframe OEM, establishing ATI as one of their top suppliers for flat products. In defense, our momentum continues to build. We are well positioned across a variety of funded platforms. We've recently qualified a new material for a long-term classified program and our R&D pipeline has strong backing from the U.S. government and our allies. Our defense sales grew 11% year-over-year in the first quarter. The bottom line, our strategy is working. We're increasing yields, strengthening reliability, expanding capabilities and unlocking capacity through debottlenecking. The investments we have made in press, forging and downstream assets for testing and finishing are translating into higher output, improved reliability and enhanced customer value. With strong order rates and a robust backlog, the message from our customers is clear. They need our products and ATI is delivering. Since 2020, we've been executing our growth strategy to focus on high value A&D applications. This transformation is evident in our results. In Q1, A&D represented 66% of our total revenue. We are pleased to announce that effective today, ATI's Global Industry Classification Standard, or GICS code, has been reclassified to aerospace and defense. This reclassification validates our strategic evolution and provides greater visibility of ATI as a world class A&D supplier. All of this is made possible by our ATI team, who continue to deliver high quality products safely, on schedule and at scale. It's the result of strategic focus, operational discipline and execution. Our customers are gaining momentum and with them so too is ATI. With that, I will turn it over to Don.