Thank you, Quynh. Welcome, everyone, to our fourth quarter 2018 earnings call. I'm happy to report that we had a strong finish to our year, as we finished 2018 with our highest sales ever, our highest adjusted EBITDA ever, our second-best adjusted EPS ever and our best safety rate ever. At Koppers, we remain unwavering in our commitment to the safety and welfare of our people, an investment that we believe will lead to a stronger, more successful future for our company. We continue to believe that if we protect the health and well-being of our employees, success will follow in all else what we do. Now, as I just mentioned, I'm proud to announce we finished the year with our lowest total recordable rate in the history of our company, a 7% improvement over 2017. Moreover 19 out of 47 operating locations had no recordable injuries in 2018, proving that 0 is indeed possible. Our serious incident precursor has also continued to decline year-over-year, reaffirming our efforts to prioritize training around hazard identification. For 2018, our safety results worldwide showed that our team has achieved the best safety performance in company history. To date much of our Zero Harm training is in gear towards operational and executive leadership and we'll continue to expand the scope of our efforts to include all our people. Zero Harm training modules for frontline employees were successfully piloted in Australia during the past year, with plans to deploy globally beginning in 2019. Now our efforts at Koppers don't stop at safety as we also take environmental responsibility and sustainability very seriously. As our company's long-term strategy continues to evolve, so too, will our sustainability efforts. As a company that recycles waste streams generated from other industries and the key production feedstocks, while also utilizing renewable resources for another significant portion of our raw material requirements, we've been at the forefront of sustainability before it became fashionable. In 2018, we extended our sustainability business model even further with our acquisitions of M.A. Energy Resources, renamed Koppers Recovery Sources and Cox Industries renamed Koppers Utility and Industrial Products. Both businesses bring product life cycle management capabilities to Koppers in a way that hasn't existed before at our company. They're shining examples of our Zero Harm culture continues to be the foundation for how we operate. Now before going into the details of our financial performance, as shown on slide 3, I'd like to state that there are three takeaways from today's call that I hope to leave with everyone by the time we're finished. Number one: Our primary goal this year is to beat 2018. Now our adjusted EBITDA guidance for 2019 is $210 million to $225 million and that's where we want you to set your expectations. But make no mistake about the fact that we're working relentlessly to make 2019 a better year than the all-time high of $222 million of adjusted EBITDA achieved just this past year. Our goal at Koppers is to always push the bar higher and we've now done that for four straight years and are focused on making it 5. Number 2: We're intensely focused on the balance sheet. It also just happens that one of our core competencies is managing our leverage. From January of 2015 to December of 2017, we reduced leverage by two full turns to get down to 3.1 times. It's our goal to get back to at least 3 times by the end of 2020. Now to achieve that I believe we have a number of levers that will not involve the destruction of shareholder value. And we'll begin our journey by spending within our 2018/2019 two-year commitment of $140 million in capital spending, which means that this year's capital investment has been reduced to $30 million to offset spending that was pulled into 2018. This action will allow us to reduce our net debt by a minimum of $80 million in 2019. The third thing I'd like you to take away from today's call is, we will continue to play to our strengths, as master of portfolio managers, as we continue to look at shuffling the deck of our existing asset base. We will evaluate what should be added or subtracted to enhance the value of our overall brand. In the past five years, we've acquired five businesses, we've sold five, we've shut down six facilities, and built a new plant while transforming ourselves into the world leader in wood protection, while also drastically changing our financial profile in a positive way and reducing risk. You can expect more of the same as we not only will refine our focus on wood, but also be the kind of industrial company that's heavily committed to sustainability. So now let's discuss the financial results. For 2018, Koppers delivered $1.7 billion in sales, our highest sales year ever and a 16% improvement over 2017. Excluding the impact of the sales from our acquired companies, sales still increased by nearly 5%. For the second straight year, we achieved a record-high adjusted EBITDA. In 2018, we were able to improve upon our prior year record high by $21.2 million or 10.6% to finish the year at $221.6 million, which was in line with our revised guidance. Our adjusted EBITDA margin of 13% also represents the second straight year that we achieved 13% level or greater. The only other time has been 2007 and 2008 in our history as a public company. In fact, the last three years 2016, 2017 and 2018, represent our three highest adjusted EBITDA margin levels in the company's last 10 years. Now in 2015 when I stepped into the CEO role, I made a commitment that our goal would be to achieve sustainable profitable growth averaging between 11% to 15% adjusted EBITDA margin through an economic cycle. Keep in mind that for the six prior years, our margin high had been at 11.3% and we had essentially seen flat-to-declining margins over that time span. In contrast, 2018 represents our fourth straight year of adjusted EBITDA improvement also the longest such streak in the company's history. Now looking ahead, we believe it's appropriate to have a cautious approach as we'll once again be challenged by the low-growth markets in which we operate. That said, we do have a number of opportunities available to us top line and bottom line and depending upon how they each play out, we can potentially deliver that fifth straight year of profitability improvement in 2019. Before covering our expectations for this year, I'd like to do a quick review of our recent fourth quarter as highlighted on page 4. So getting into fourth quarter results, most notably, we saw year-over-year volume improvement in our RUPS business for the first time since mid-2016. And if weather conditions during the quarter were more favorable, we would have had even greater production of untreated ties and profitability would have been even higher due to greater fixed cost absorption. Results were lower for our PC segment compared to prior year, but that was in line with our expectations. Finally, CMC maintained its healthy margin, which is at a relatively similar profitability level as the prior year. Now in our RUPS business, sales of $164.2 million increased by $54.7 million or 50% compared to sales of $109.5 million in the prior year quarter. Excluding the sales impact from acquisitions, sales in RUPS were up 4% over the prior year fourth quarter. In addition to acquisitions, sales benefited from favorable pricing trends for crossties and higher demand for its railroad bridge services, partially offset by lower volumes related to utility products in Australia. For the quarter, adjusted EBITDA was $8.9 million or 5.4% compared with $1.3 million or 1.2% in the prior year quarter. The improvement in RUPS included the contribution from recent acquisitions, but was actually driven even more by improved production utilization driven by slightly higher volumes and year-over-year cost savings. In our Performance Chemicals segment, sales of $99.3 million increased by $6.3 million or 6.8% compared to sales of $93 million in the prior year quarter. The increase was due primarily to higher average pricing driven by a more favorable mix as well as improved demand in North America. Adjusted EBITDA for the quarter was $13.9 million or 14% for the fourth quarter compared with $18.5 million or 19.9% in the prior year quarter. PC's margin was lower year-over-year due to the acceleration of commodity hedge gains in the prior year that contributed to abnormally lower raw material costs compared with the current year quarter. Our CMC business reported sales of $161.9 million, which decreased by $1.7 million or 1% compared to sales of $163.6 million in the prior year quarter. Excluding an unfavorable impact from foreign currency translation of $5.6 million, sales actually increased by $3.9 million or 2.4% from the prior year quarter. And the increase was due to higher demand for carbon pitch in North America and Australia, partially offset by lower pitch sales in China and phthalic anhydride in North America. Adjusted EBITDA was $24.2 million or 14.9% in the fourth quarter compared with $23.8 million or 14.5% in the prior year quarter. CMC's profitability improved slightly from the prior year quarter reflecting an attractive margin level. This was due to pricing outpacing raw material increases and permanent cost savings realized from some prior restructuring initiatives, partially offset by lower profitability in China due to our facility operating for approximately only one month under a special purchase order at lower than contractual pricing. At our new naphthalene plant in Stickney, Illinois operations successfully and safely completed the first full quarter online and our Stickney facility is now handling all naphthalene production. As expected, we're beginning to realize the benefits from both process and cost efficiencies. So before I provide our outlook for 2019, I will turn it over to Mike to discuss some other key highlights from the fourth quarter and the full year 2018.