Thank you, John. Before I discuss our results and outlook, I just want to say a heartfelt thank you to the entire MKS team, as well as our shareholders for their support and partnership in the past 18 years. It has been a privilege to serve as Chief Financial Officer of MKS. I am proud to have been a part of the company's substantial growth and transformation over that period. MKS' strong operating model and unique position to capitalize across a number of attractive secular growth opportunities, leaves me very excited about the company's future and look forward to following MKS' continued success. Let me now cover our fourth quarter and full year results and provide some thoughts on our first quarter of 2024. Starting with the fourth quarter, we delivered revenue of $893 million, above the high end of our guidance range, primarily due to better than expected revenue from a Semiconductor and Electronics and Packaging markets. Revenue was down 4% sequentially and down 18% year-over-year. Turning to our end market results. Fourth quarter semiconductor revenue was $362 million, declining 1% sequentially and 28% year-over-year. Fourth quarter electronics and packaging revenue was $226 million, a decrease of 7% sequentially and 15% year-over-year. Excluding the impact of foreign exchange and palladium pass-through, fourth quarter revenue declined 9% on a year-over-year basis. Moving to our specialty industrial market. Revenue in the fourth quarter was $305 million, down $0.05 sequentially and down 3% year-over-year. Excluding the impact of foreign exchange and palladium pass-through, fourth quarter revenue declined 3% year-over-year. In the fourth quarter, consumables and services revenue across our 3 end market categories comprised 41% of our total revenue. Turning to our margins. We reported fourth quarter gross margin of 46%, exceeding the midpoint of our guidance range. The more favorable gross margins were a function of unexpected volumes as well as favorable product mix. Our healthy gross margins reflect the value of technological capabilities in the complex problems we solve for our customers. Fourth quarter operating expenses were $229 million, below the low end of our guidance range, due to strong cost control, even though we had better than expected revenue. Fourth quarter operating margin was 20.3%, well above the high end of our guidance range due to higher revenue, favorable mix and prudent cost control, resulting in robust operating leverage. We continue to work toward our cost synergy targets with Atotech. We exited the fourth quarter, delivering almost $50 million of annualized run rate cost synergies, on track to achieve our cost synergy target of $55 million exiting the second quarter of 2024. Fourth quarter adjusted EBITDA was $218 million, also above our guidance range. Adjusted EBITDA margin was 24%. Net interest expense for the fourth quarter was $76 million, lower than anticipated due to more favorable interest rates relative to our expectations. Our tax rate for the fourth quarter was 16%. Net earnings for the fourth quarter was $78 million or $1.17 per diluted share. Turning to our balance sheet and cash flow. We exited the fourth quarter with more than $1.3 billion in liquidity, including cash and short-term investments of $875 million and an undrawn revolving credit facility of $500 million. We exited the quarter with gross debt of $5 billion. And last month, we successfully completed the refinancing of our $744 million secured Tranche A term loans by raising incremental secured U.S. dollar in euro Tranche B term loans. As a result of the refinancing, we extended maturity of the refinance debt to 2029, consistent with our existing Tranche B term loans. It eliminated the financial maintenance covenant that applied, while our Tranche A term loan was outstanding. Based on current interest rates, we also expect the refinancing result in modest interest savings. In addition, we made a voluntary debt prepayment of $50 million earlier this month, following the $100 million voluntary debt prepayment we made in the fourth quarter. We continue to prioritize deleveraging our balance sheet while managing the cash and investment needs of the business. In this context, it's worth noting that the first quarter typically has lower free cash flow due to timing of variable compensation payments. Our net leverage ratio exiting the fourth quarter was 4.7x based on trailing 12-month adjusted EBITDA of $863 million. For the fourth quarter, free cash flow was $146 million and unlevered free cash flow was $194 million. Consistent with prior quarters, we made a dividend payment of $15 million or $0.22 per share. Moving to full year 2023 results. Revenue was $3.6 billion, down 19% year-over-year on a combined company basis. Semiconductor revenue totaled $1.48 billion, declined 28% year-over-year due to a decline in global semiconductor capital equipment spending. The largest driver of that decrease was a significant decline in NAND spending, where we are a key enabler with certain subsystems such as RF power generators for high aspect ratio etching. Electronic and Packaging revenue was $916 million in 2023, down 19% year-over-year compared to combined company results in 2022. Excluding the impact of foreign exchange and palladium pass-through, Electronics and Packaging revenue declined 13% on a year-over-year basis. Within Electronics and Packaging market, total chemistry sales declined 10% year-over-year on a combined company basis when excluding the impact of foreign exchange and palladium pass-through. Specialty Industrial revenue was $1.23 billion in 2023, down 4% year-over-year on a combined company basis. Excluding the impact of foreign exchange and palladium pass-through, sales declined 2% year-over-year. In 2023, the revenue split between our Semiconductor, Electronics and Packaging, Specialty Industrial markets was 41%, 25% and 34%, respectively. For the full year, gross margin was approximately 46% and operating margin was approximately 20%. Again, that performance is a reflection of the value of our proprietary and differentiated technology as well as disciplined cost management. We are pleased with execution on margins, given the lower level of revenue due to broader industry softness. Turning to cash flow. We generated operating cash flow of $319 million and free cash flow of $232 million. Furthermore, we generate unlevered free cash flow of $473 million or 13% of total revenue. We are pleased with the strength of the underlying cash generation in our business, despite a challenging demand environment in our end markets, as well as the ransomware event in the first quarter of 2023. As our end markets recover, we expect cash generation to improve, which will enable us to accelerate our debt paydown. Now let me turn to our first quarter outlook. We expect first quarter revenue of $140 million, plus or minus $40 million. By end market, our [indiscernible] is as follows. Revenue from our semiconductor market of $330 million, plus or minus $15 million. Revenue from electronics and packaging market of $210 million, plus or minus $10 million; and revenue from our specialty industrial market of $300 million, plus or minus $15 million. Based on anticipated product mix and revenue levels, we estimate first quarter gross margin of 45.5%, plus or minus 1 percentage point. For the first quarter, we expect operating expenses of $240 million, plus or minus $5 million. Sequential increase was due to typical increase in fringe expenses, so we'll continue investments into the business. While operating expenses can fluctuate due to underlying business levels, we believe a $240 million to $250 million quarterly run rate is a reasonable estimate to think about OpEx for the balance of 2024. We'll also continue to manage our cost structure carefully. For the first quarter, we estimate adjusted EBITDA of $182 million, plus or minus $22 million. For the first quarter, net interest expense expected to be $78 million, reflecting current interest rates, our recent refinancing and the $50 million voluntary prepayment we made earlier this month. For the first quarter, we expect our tax rate to be approximately 24%. However, for the full year, we expect our tax rate to be approximately 20%. We are very pleased with execution optimizing our tax rate following the close of the Atotech acquisition in August of 2022. In fact, absent any tax -- changes in tax legislation, we now expect our long-term tax rate to be approximately 19% to 21% compared to a tax rate of 25% to 27% represented in our long-term financial model at our 2022 Analyst Day. Given these assumptions, we expect first quarter net earnings of $0.72 per diluted share, plus or minus $0.25. In closing, we performed well navigating through sickle softness in our end markets by focusing on what we can control. We maintained strong gross operating margins. We prudently manage our cost structure, while remaining aggressive on product innovation. We significantly lowered our tax rate through a series of tax planning initiatives. We optimized our balance sheet by extending certain debt maturities, and simplified our debt structure by eliminating the financial maintenance covenant that applied to our existing debt. We reduced our cost of debt through repricing our USD Term Loan B. We maintained strong liquidity as we manage through a slowdown. And finally, we deployed more than 80% of free cash flow to debt pay down. All these actions have made MKS a stronger company. We're well positioned to capture long-term secular growth opportunities we see across our portfolio and translate that into attractive value creation for our shareholders. With that, operator, you can now open up for Q&A.