Thank you, Chris. Good afternoon, and thank you everyone for joining the call. Today, we will discuss our performance during the fourth quarter and full-year 2023 and our focus on operational execution in 2024. As we build a leading diversified specialty pharmaceutical company committed to improving the lives of people living with serious medical conditions, we strive to do good as we do well. We are proud of our partnerships with organizations to drive equitable access to STEM education and underserved communities. As part of this commitment, we recently launched the Collegium Pharmaceutical Scholarship Program for which we will award two full scholarships to Massachusetts-based high school seniors, pursuing a STEM-related major at a U.S. university. We are proud to provide this opportunity to students who have demonstrated financial need, academic achievement, leadership, community service and a commitment to learning as they pursue a career in STEM. Also, yesterday, we published our 2023 ESG report, which reflects our commitment to operating with responsibility, integrity and purpose. I encourage you to read the report on our website. I'd also like to recognize the Collegium team for their commitment to our mission and for their contributions and accomplishments in 2023. 2023 was a banner year for Collegium Pharmaceutical. We delivered on our financial commitments and executed our capital deployment strategy. Key accomplishments in 2023 include: we delivered record revenue and record adjusted EBITDA; we returned BELBUCA to sequential quarterly prescription growth starting in Q2 2023, and saw year-over-year quarterly growth in Q3 and Q4. In the fourth quarter, BELBUCA total prescriptions grew 3.2% compared to Q4 2022. We expect to see BELBUCA prescription growth in 2024. We successfully renegotiated a major Medicare Part D plan, accounting for 12% of BELBUCA prescriptions, maintaining access and materially rolling back rebates. This will result in year-on-year gross-to-net improvement. We also won new Medicare Part D plan, representing approximately one million covered lives. We improved Xtampza ER gross-to-net in 2023 to 59.6%, a decrease of 9.7 percentage points over 2022. We successfully renegotiated contracts, representing 30% of all Xtampza ER prescriptions, maintaining access and improving rebates in 57% of plans. We expect to see gross-to-net improve to 56% to 58% in 2024. We received new patient population exclusivity for Nucynta, extending the period of U.S. exclusivity from June 27, 2025 to July 3, 2026. We submitted a pediatric extension for the Nucynta franchise in December, that if approved, will extend exclusivity of the franchise an additional six months. We expect a decision in the second half of 2024. The new patient population exclusivity for Nucynta, together with the potential pediatric extension for the Nucynta franchise, bolster our outlook in 2025 and 2026. We executed our capital deployment strategy, paying down $162.5 million in debt and returning $75 million in capital to our shareholders through our share repurchase program, and we ended the year with over $310 million in cash and marketable securities. Our record financial performance and operational achievements in 2023 position the organization for success in 2024 and beyond. We expect to deliver record revenue, adjusted EBITDA, free cash flow and net income in 2024. In 2024, top line growth will be fueled by BELBUCA and Xtampza ER. We are encouraged by the BELBUCA prescription growth we saw in the fourth quarter of 2023, and we expect to see full-year prescription growth in 2024, along with gross-to-net improvement. Over the past two years, we renegotiated contracts representing 84% of all Xtampza ER prescriptions, maintaining access and rolling back rebates in 77% of plans. This is a major accomplishment that will fuel Xtampza ER revenue growth in 2024. We expect gross-to-net to improve to 56% to 58%. The team is working hard to mitigate anticipated pressure on prescriptions. The Nucynta franchise is a key contributor to our pain portfolio. We do expect some pressure on Nucynta franchise revenue in 2024 because of the American Recovery Act eliminating the Medicaid cap. Beginning in 2025 through loss of exclusivity, we expect to be able to deliver relatively stable year-on-year results. The new population exclusivity achieved for Nucynta in 2023 and the anticipated pediatric extensions for the franchise in 2024, along with the reduction in the royalties we pay on Nucynta franchise sales from 14% to 7% beginning on June 27, 2025, bolster our outlook for the franchise in 2025 and 2026. In 2024, our focus is on operational execution. We are committed to achieving our financial objectives and deploying capital to create long-term value for our shareholders. We aim to achieve record financial performance while rapidly paying down debt and returning capital to our shareholders by opportunistically leveraging our $150 million share repurchase program. I am confident that we are well positioned to deliver on our financial and capital deployment objectives. I will now hand the call over to Colleen to discuss the financials.