Thank you, Arthur. Today I'll discuss both our quarterly and full year GAAP results which are heavily influenced by the transactions we've executed on as well as our non-GAAP results. As Arthur mentioned, we've been busy and that is reflected in our income statement. In our fourth quarter we recorded $190 million GAAP loss on the impairment of the NUCYNTA intangible asset due to our revised outlook for the future revenue performance of the product. It is also affirming Collegium's lower guidance in 2020. Subsequent to year-and we completed the sale of NUCYNTA to Collegium for $375 million plus the royalties we have received in 2020. In our first quarter results, those royalties will be treated as commercialization agreement revenues and we will see an additional loss and the remaining intangible balance. Also included in our GAAP results is $2.2 million of costs associated with the Gralise divestiture. While the transaction closed in January, we expensed the remaining Gralise sample inventories and the transactions costs incurred in the fourth quarter. The gain is associated with the transaction and all the royalties earned from Alvogen will be excluded from our non-GAAP adjusted EBITDA for future periods. Associated with the cost savings initiatives we announced last quarter we incurred a onetime restructuring charge of $3.9 million. We've implemented all the initiatives designed to accelerate $15 million of cost savings. And as you can see from our fourth quarter results, we were slightly ahead of plan on the timing of those savings. Turning to the operating results. Our adjusted EBITDA for the fourth quarter and full year 2019 was $31 million and $138.4 million respectively. This result was well above our previous full year guidance of $124 million to $129 million. The quarterly results were also impacted by a $3.2 million loss, which is included in both our GAAP and non-GAAP results related to the termination of the cosyntropin commercialization agreement, where we received only a partial payment in settlement of an outstanding receivable balance from West. If West is successful in finding a new partner and launching the product, we may receive up to $10 million of West's future licensing income for the product. The strong EBITDA performance in the quarter continues to exemplify the continued focus by the organization on operating efficiencies, and profitability. In addition, the quarter benefited from a strong top-line performance. Neurology revenues for the fourth quarter were $29.3 million, which is 1.3% above the prior year, and 11.4% above the prior quarter. Our full year neurology revenues were $108.1 million, which was also above our guidance of $102 million to $105 million. Had it not been for the returns issue we experienced with Zipsor this year, we would have been able to show year over year growth in 2019, as well. CAMBIA generated sales of $8.8 million for the fourth quarter, and $32.5 million for the full year. CAMBIA performed well with 7% annual and 5% sequential prescription growth in the quarter. As Arthur stated earlier, 2019 prescription volumes were 4% above 2018. Net revenues lagged prescription growth this year due to the unfavorable payer mix in both our commercial and government lines of business as we've discussed previously. We've invested in our patient access programs. And we're seeing the benefits and prescription growth, as well as 7.6% net revenue improvement over the third quarter. We see a lot of opportunity for CAMBIA in the future especially as we highlight the brand and refocus our sales efforts towards CAMBIA in the second quarter of 2020. Now with the returns issue behind us, we're seeing Zipsor net revenue performance return to growth. $3.5 million recorded in the fourth quarter represented 8% year over year, and 6% sequential net revenue growth. Prescription demand in the fourth quarter was especially strong for the product recording a multiyear quarterly high that was 28% above the prior year, and 12% above the prior quarter. We also finished the full year with 17% prescription growth, a testament to our patient access program and changes to our sales model over the year have improved the outlook for the product and franchise. Gralise sales, we had a good quarter delivering $17.1 million in net revenues for the quarter up 15.6% year-over-year improvement, despite a 3% decline in prescription demand. As the product continued to benefit from our favorable payer mix. The transaction with Alvogen closed in January 13th and to ensure a successful transition, we've agreed to promote the product for the first quarter of 2020 and Alvogen will reimburse us for our costs to do so. Beginning in the second quarter, we will realign our call plants to emphasize CAMBIA and Zipsor. Thus any benefits we may expect to see from this focus won't occur until later in the year. We recorded $29.5 million of GAAP commercialization agreement revenues from Collegium in the fourth quarter versus $27.3 million last quarter. After adjusting for the changes in the contract asset and the accounting for the Grünenthal royalty, the non-GAAP revenues were $25.4 million in the fourth quarter relative to $31.1 million in our third quarter. This decline is due to the step down of royalty rates to 14% for Collegium sales above $180 million, and the non-GAAP numbers are more reflective of the cash received under the agreement. Despite the $6 million difference in non-GAAP commercialization agreement revenues of $3.2 million direct cost and surplus charge and expensing nearly half of our full year R&D expenses in the fourth quarter. Our EBITDA performance in the fourth quarter of $31 million compares quite favorably to the $34.3 million in our third quarter due to our focus on operational efficiencies which drove the decline in our base SG&A. Subsequent to year-end and the closure of both the Gralise and NUCYNTA transactions we now only have $77 million of convertible debt outstanding. We have repaid our senior debt in full and entered into a number of privately negotiated transactions retirement approximately $188 million of par value of our converts at a small discount to par in mid-February. We expect that once we have repaid all of our indebtedness, we'll have approximately $50 million in cash, as well as the future royalties from the sale of Gralise totaling $52.5 million. Arthur and I are committed to having a business that is EBITDA positive by year-end. Now that the restrictive senior debt covenants, the owners' interest in debt service drains on our cash flows and our reliance on income from an opioid are gone. We can turn our efforts away from refinancing and restructuring activities and towards building and growing our business. The debt had occupied a significant amount of management's time and effort, as well as been a source of concern from potential business development and M&A counterparties. We feel a tremendous amount of weight has been removed from our shoulders and we're excited about the future and look forward to providing insight on a go forward plans shortly. That ends our prepared comments. Today, we will not be hosting a question and answer section on this call. As it was mentioned, we instead plan to hold a separate conference call in the near future, and we'll discuss our plans for the remainder of our convertible debt, and to explain how we intend to leverage or strengthen balance sheet to create a sustainable and growth oriented specialty pharmaceutical company. Thank you for your attention this afternoon. We look forward to speaking in the near future. And I'll now turn the call back over to Max for final comments.