Revenue Performance - EXPAREL net product sales remained flat at 538.12millionin2023comparedto536.90 million in 2022, with a 4% increase in gross vial volume offset by a 3% decrease in net selling price per unit [446]. - ZILRETTA revenue increased by 5% to 111.10millionin2023,drivenbya319.69 million in 2023, primarily due to a 33% increase in Smart Tip volume [447]. - Total revenues for 2023 were 674.98million,a1666.82 million in 2022 [446]. Gross Margin and Expenses - Gross margin improved to 73% in 2023, up from 70% in 2022, mainly due to lower inventory reserves and reduced royalty expenses [449]. - Total research and development expenses decreased by 10% to 76.26millionin2023,representing1124.47 million in 2023, attributed to the completion of certain trials [454]. - Product development and manufacturing capacity expansion expenses increased by 35% to 33.37million,drivenbynewproductdevelopmentcostsandscale−upactivitiesforEXPAREL[455].−Totalselling,generalandadministrativeexpensesroseby6269.4 million, which is 40% of total revenue [458]. - Sales and marketing expenses increased by 6% in 2023 to 153.0million,drivenbymarketinginvestmentsandeducationalinitiatives[459].−Generalandadministrativeexpensesincreasedby1282.7 million, primarily due to legal fees from ongoing litigation [461]. Cash Flow and Financing - Net cash provided by operating activities was 154.6millionin2023,anincreaseof9.4 million from 2022 [479]. - Net cash provided by investing activities was 77.5millionin2023,reflecting99.5 million from available-for-sale investment maturities [480]. - Net cash used in financing activities was 183.0millionin2023,includinga296.9 million repayment of TLB Term Loan principal [482]. - The company had an accumulated deficit of 106.8millionandcashandcashequivalentsof281.0 million as of December 31, 2023 [476]. Debt and Interest - Interest expense decreased by 49% in 2023 to 20.3million,attributedtotheTLATermLoanenteredinMarch2023[470].−AsofDecember31,2023,theoutstandingprincipalontheTLATermLoanwas116.6 million, with a borrowing rate of 8.46% [485]. - The company made a scheduled principal payment of 2.8millionand30.6 million in voluntary principal prepayments during the year ended December 31, 2023, resulting in no required principal payments for 2024 [485]. - The company incurred a 16.9millionlossonearlyextinguishmentofdebtafterrepayingthe287.5 million principal on the TLB Term Loan [488]. - The TLA Term Loan has a principal amount of 150.0million,withanoutstandingprincipalof116.6 million as of December 31, 2023, and an interest rate of 8.46% [508]. Tax and Equity - The effective tax rate for 2023 was 32%, significantly higher than the U.S. statutory tax rate of 21% due to non-deductible expenses [474]. - The company has raised 344.5millioninnetproceedsfromthesaleofcommonstockandotherequitysecuritiessinceitsinceptioninDecember2006[484].RegulatoryandManagementChanges−TheFDAapprovedthesNDAfora200−literEXPARELmanufacturingsuiteinFebruary2024,expectedtoenhancegrossmarginsovertime[445].−ThecompanyappointedFrankD.LeeasCEOinDecember2023,bringingoverthreedecadesofexperienceinthebiotechandpharmaceuticalindustry[444].−Regulatoryandotherresearchanddevelopmentexpensesincreasedby22372.3 million related to the Flexion Acquisition, contingent on achieving certain regulatory and commercial milestones [494]. - As of December 31, 2023, the outstanding principal on the 2025 Convertible Senior Notes was 402.5million,maturingonAugust1,2025[489].−Thecompanyhadnetminimumcommitmentsof78.6 million for operating leases as of December 31, 2023, with $13.0 million due in 2024 [496]. - The company is required to maintain a Senior Secured Net Leverage Ratio of no greater than 3.00 to 1.00 and a Fixed Charge Coverage Ratio of no less than 1.50 to 1.00 under the TLA Credit Agreement [486]. - Accounts receivable are primarily concentrated with three large wholesalers, posing a risk of material adverse impact on financial condition if there is non-performance or non-payment [510].