Thanks, David. Good morning, everyone, and thank you for joining us today. MKS delivered strong fourth quarter revenue of $500 million, above the high end of our guidance range. Non-GAAP net earnings for the fourth quarter were $66 million or $1.20 per share, which was also above the high end of our guidance range. Our strong results were driven by an improvement in our semiconductor market, which extended across our broad portfolio of differentiated products. Our advanced markets revenue was in line with expectations as our Light and Motion business remained stable with third quarter levels. Our equipment and solutions division declined in the fourth quarter due to seasonally softer volumes, which we highlighted during our third quarter call. As we enter a new decade at MKS, we're excited about three important secular trends, driving both our semiconductor and advanced markets. First is the impact of a world that continues to be increasingly interconnected, resulting in an explosion of data storage, data transmission and data analytics requirements. This drives continued growth for advanced memory and logic chip demand. Second is the increasing complexity of technology transitions in the semiconductor manufacturing, which leads to inflections, such as extreme vertical structures and process engineering at the atomic level. These inflections provided more growth opportunities for MKS as we are uniquely positioned to deliver the broadest and deepest portfolio of solutions. And finally, is the accelerating need for laser-based precision manufacturing techniques, which are enabled by lasers, photonics, optics, motion and systems solutions. We believe our long history and deep expertise in solving critical problems positions us well to address these challenges for our customers. Now for additional color on fourth quarter results. Sales to our semiconductor market strengthened considerably in the fourth quarter, growing 22% sequentially driven by a strong foundry and logic spending as well as early signs of recovery in memory. We expect strong semiconductor capital spending to continue into the first quarter of 2020. In our Vacuum and Analysis business, we saw volume orders for RF generators and matching networks related to design wins discussed previously. But I want to emphasize that power is just one of several critical enabling technologies that we provide to our semiconductor customers. MKS is also a market leader in plasma and reactive gas solutions as well as banking, measurement and control, where we have the largest portfolio of pressure, flow, valves and residual gas analysis solutions. The combination of these leading product offerings serves as a key differentiator versus our peers, which we believe enables us to respond faster to disruptive technology inflections. Also in the fourth quarter, we secured multiple design wins in our plasma and reactive gas business, particularly for leading-edge foundry nodes. In pressure, we received a key design win, a deposition application, owing to improvements in our technology at high-end temperature operation. Additionally, we won a meaningful residual gas analyzer order with a leading foundry for their most advanced technology nodes. In our advanced markets, we are encouraged with the stabilization in our Light and Motion business in the fourth quarter. And we expect continued stabilization into the first quarter of 2020. Because of our industry-leading offerings in lasers, optics, photonics and motion, we are a critical technology enabler across various industries, including microelectronics manufacturing, solar, life and health sciences, research and defense. In the fourth quarter, we saw demand for our pulse lasers across multiple markets in solar, display and PCB drilling. A key enabler of advanced manufacturing and inspection is precision motion control. And we are encouraged with the traction we have seen in our motion business, with numerous design wins for applications in display manufacturing, semiconductor wafer renewing and 5G antenna testing. We are also proud to announce that our Ophir optics, long-range continuous zoom lens was named an SPIE 2020 Prism Award finalist. This zoom lens delivers high-resolution surveillance and identification capabilities of distances of over 25 kilometers and demonstrates our relentless focus on innovation. Revenue for our equipment and solutions division declined in the fourth quarter due to seasonally softer volume, which was consistent with our expectations. That said, we are pleased with the substantial progress we have made towards our cost synergies goal, having already achieved over $13 million of annualized savings. We are also pleased to announce that we have recognized revenue for our new high-density interconnect PCB drilling tool, which was a result of the purchase order we discussed on last quarter's call. Also in the fourth quarter, we shipped another beta system to an additional customer, which now totals three customers with beta systems in active testing. Key differentiation is unique to MKS lives and having both strong expertise in lasers, optics, photonics and motion control in our Light and Motion division, along with the system that's a materials processing knowledge in our equipment and solutions division. We expect that leveraging this combined broad expertise will enable us to develop innovative solutions faster, resulting in additional opportunities across the company. Before turning the call over to Seth for additional details on our fourth quarter results and our first quarter outlook, I want to offer a few comments on my recent transition to CEO, effective January 1st. I'm truly honored to have been chosen to lead MKS. It's such an exciting moment in the company's history. The accomplishments MKS has made over the past six years have been nothing but astounding, and I believe the best is yet to come. I would like to acknowledge the tremendous support and mentorship I have received from our previous CEO, Jerry Colella, whom I will continue to work closely with when he assumes the role of Chairman of the Board in May. I would also like to acknowledge the invaluable guidance and support I have received from the rest of the Board over the past 12 years, most notably from our current Chairman, John Bertucci. And now I'll turn the call over to Seth.