Thank you, Martina, and good morning, everyone. I'm delighted to be joining for my very first earnings call here at S&P Global Inc. and especially pleased to be able to talk through such strong results this quarter. Starting with slide eighteen, you'll see on the left panel that we delivered a very strong start to 2025. Solid growth in every division and 9% organic constant currency revenue growth for the company. Revenue growth of 8% and expense growth of 6% allowed us to deliver 100 basis points of margin expansion year over year and 9% in adjusted diluted EPS growth. As Martina mentioned earlier, we continue to engage proactively with customers across the board this quarter while maintaining strict discipline on expenses. That focus and execution helped us to deliver a strong first quarter and also positions us well to deliver strong results for the rest of 2025. Slide nineteen illustrates the progress we continue to make in key strategic growth areas. Sustainability and energy transition revenue grew 20% to $93 million in the quarter, driven by strong demand for commodity insights energy transition products, and data and insights from market intelligence. We continue to see very strong demand for our sustainability offerings in all divisions and saw a number of competitive wins in the quarter, especially around our physical risk solutions. Moving to private markets, revenue increased by 21% year over year to $140 million. Growth was driven by debt and bank loan ratings, as well as continued strength in iLevel and other private market solutions within market intelligence. Private credit continues to be a significant driver of growth for us, and we continue to see strong demand for an S&P Global Inc. rating on debt, whether it is issued in the public or the private markets. We are also nearing the finish line on our revenue synergies. We exited the first quarter with run rate revenue synergies of $311 million and remain ahead of pace to achieve our target of $350 million by 2026. Finally, we are pleased that we continue to deliver the vitality index at or above our 10% target. In the first quarter, we saw contributions from new and enhanced products in every division and are pleased to see the financial impact of the product investments we've made in recent years. Turning to our divisions, market intelligence revenue increased 5% in the first quarter with a net impact of acquisitions and divestitures creating a roughly 30 basis point headwind to growth. Revenue from our data analytics and insights products accelerated on both the to 7% and 4% year over year, respectively. First-quarter revenue in the business line includes a net contribution from Visible Alpha, less the lost revenue from the Prime One divestiture. Enterprise Solutions benefited from an increase in issuance volume in the debt and equity capital markets, as well as strong growth in subscription products. Reported revenue growth of 1% includes the impact of $21 million in FinCENTRIC revenue in the year-ago period. Excluding that impact, organic growth was 8% year over year. Credit and risk solutions grew 6%, supported by strong new sales and price realization, particularly for Ratings Express subscriptions. Consistent with the commentary we made during our last call, margins were below the full-year guidance range in the first quarter but actually came in slightly better than we initially expected based on some tight expense controls we put in place at the start of the year. Margins of 32.8% improved slightly year over year. We expect some modest improvement in the quarterly revenue growth rates in 2025 as we progress through the year. We see strong growth in the sales pipeline and stable renewal rates, and we expect both of those dynamics to continue as we lap more of the cancellations from 2024. We're also encouraged by the continued momentum we're seeing in our competitive win rate in market intelligence as our enterprise approach continues to resonate with more and more customers. Now turning to ratings on slide twenty-one. As Martina mentioned earlier, we saw issuers take advantage of favorable financing conditions and open market windows to drive growth in issuance volumes in the first quarter. Q1 was actually the fifth consecutive quarter of more than $1 billion in revenue for our ratings division. Ratings revenue increased 8% year over year as we saw positive growth across all revenue categories. Transaction revenue grew by 7% in the first quarter, as heightened refinancing activity increased bank loan and structured finance fees. Non-transaction revenue increased 10%, primarily due to an increase in annual fee revenue and elevated issuer credit rating or ICR revenue. Importantly, much of our growth in ICR came from private market mandates as more and more participants in the private markets are looking to capture the value that comes from an S&P Global Inc. rating. Given the pullback we've seen in April issuance volumes, we do expect bond issuance to be down low double digits in the second quarter and flattish in the second half. This will primarily impact the cadence of transaction revenue while non-transaction revenue continues to grow at a healthy pace each quarter. As Martina mentioned earlier, we benefit from this strong base of non-transaction revenue in our ratings business, and we expect non-transaction revenue to grow faster than transaction revenue in a year like 2025. That provides some additional stability to our ratings business through the cycle. Adjusted expenses increased only 4% in the quarter. We continue to actively monitor the issuance environment and manage expense levers in our market-driven businesses tightly to preserve margins and ensure we're positioned to deliver against the profitability targets we set out for 2025. Now turning to commodity insights. Revenue increased 9% following the sixth consecutive quarter of double-digit growth in energy and resource data and insights. Price assessments and data and insights grew 8% and 10%, respectively. We continue to see commercial momentum as we transition more customers to enterprise contract relationships. We are approximately one quarter of the way through the eligible customer base in that transition and expect to be nearly halfway through by year-end. Advisory and transactional services revenue grew 19%. As Martina noted earlier, times of volatility and uncertainty drive increased demand for a number of our products, and we saw this positive impact in the first quarter. We had a record quarter in global trading services and record attendance at CERAWeek, both of which contributed to the outsized growth we saw here too. Upstream data and insights revenue grew by 1% year over year, with growth tempered by somewhat elevated cancellations due to the consolidation we've seen in the energy space. We expect that consolidation to impact upstream a bit more in the remaining quarters of 2025. Adjusted expenses increased 8% due to higher compensation costs and ongoing investment in growth initiatives. Operating profit for commodity insights increased 11%, and operating margin improved by 90 basis points to 48.1%. Now turning to mobility. Revenue increased 9% year over year. This includes roughly a 70 basis point headwind from currency impact, largely due to exposure to the Canadian dollar. Dealer revenue increased 11% year over year, driven by new business growth in products such as CARFAX and Automotive Mastermind. Dealer revenue benefits from its higher exposure to the used car market, which is generally more resilient through the cycle than the new car market. Manufacturing increased 1%, with growth impacted by the decline in transaction revenue related to the recall business. As a reminder, we began calling out the impact of the decline in recalls earlier last year and will lap that impact beginning in the second quarter. Financials and other increased 11% as the business line continues to benefit from strong underwriting volumes and commercial momentum. Adjusted expenses increased 8%, primarily due to the increased advertising and promotional investment. That investment has helped drive significant growth in CARFAX Car Care, which now has approximately 46 million users, a nearly 65% increase since our investor day in 2022. Margins for the segment improved 40 basis points year over year to 38.5%. Now turning to S&P Dow Jones Indices. Revenue increased 15%, primarily due to strong growth in asset-linked fees, which benefited from higher AUM and continued strength in exchange-traded derivative revenue. Revenue associated with asset-linked fees was up a strong 18% in the first quarter. This was driven by higher ETF and mutual fund AUMs, benefiting from both market appreciation and net inflows. As a reminder, there's a slight delay in revenue recognition in our asset-linked fees, which allows us to continue benefiting from higher equity valuations we saw during the fourth quarter of last year. We do expect growth in asset-linked fees to moderate in Q2 and beyond, given the declines we've seen in market valuations since we gave our initial guidance. Exchange-traded derivatives revenue grew 11%, primarily driven by the strong volumes in SPX products and price realization. Data and custom subscriptions increased 7% year over year, driven by new business growth in end-of-day contracts, which saw mid-teens growth in the quarter. Revenue from custom subscriptions, however, somewhat offset the very strong growth in end-of-day contracts. Adjusted expenses increased 15% year over year, primarily due to increased investments in strategic growth initiatives, as well as an increase in compensation expense. Indices operating profit increased 15%, and operating margin remained unchanged year over year at a very strong 72.9%. Now turning to guidance. Given our new debt issuance expectations and the current equity market levels, slide twenty-five outlines our enterprise guidance on a GAAP and adjusted basis. We are now expecting total revenue growth in the range of 4% to 6% with adjusted margins in the range of 48.5% to 49.5%. We remain confident in our ability to deliver solid revenue growth, strong margins, and growth in adjusted EPS this year. As I'll discuss on the next slide, we do expect slightly lower growth in ratings and indices, our two market-driven and highest margin businesses. But we plan to manage expenses so that we can preserve margin guidance in all five divisions this year. However, due to the planned closing of the Ostra sale later this year, we will see slightly lower operating income, with no corresponding revenue impact, which will directly impact margins for the year. The Ostra impact and the mix shift in revenue are the primary drivers for the change to our enterprise margin guidance. We expect to use the proceeds from Ostra for additional share repurchases, which will offset much of the EPS impact. Our discipline on both expenses and strong capital returns allows us to keep the high end of our EPS guidance intact. Given the market volatility and variability in our market-driven businesses, we think it's prudent to widen the range a bit and now expect adjusted diluted EPS in the range of $16.75 to $17.25. Moving to our division outlook, our revenue guidance for Market Intelligence is unchanged. For ratings, based on the current expectation for flattish bond issuance this year, we expect revenue growth to be flat to up 4%. We have a slightly lower but also slightly broader range compared to our previous guidance. Revenue guidance for commodity insights and mobility are also unchanged. For indices, we've obviously seen the market pullback, particularly in US equities, since we gave our initial guidance. Given that pullback, we now expect revenue growth in the range of 5% to 7%. This guidance assumes the S&P 500 is flat from April 15th through the end of the year, modest growth in ETD volumes, and subscription growth similar to what we saw in the first quarter. On the next slide, we are reiterating the margin outlook for all five of our divisions. While we do expect somewhat lower revenue in ratings and indices, we expect to offset that impact with expense discipline and modest adjustments to incentive compensation. We have multiple levers that we can pull as needed this year, and we've proactively identified and prioritized those. We want to make sure we are prudent and don't pull them too early or too aggressively, though, and preserve our ability to invest in the important revenue growth opportunities we see over the next few years. With that, I'll turn the call back over to Mark for your questions.