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DUBLIN, Ireland, March 04, 2024 (GLOBE NEWSWIRE) -- Avadel Pharmaceuticals plc (Nasdaq: AVDL), today issued a statement in response to a jury ruling from the United States District Court for the District of Delaware (“Court”) in a patent suit brought by Jazz Pharmaceuticals Inc. regarding LUMRYZ™. Avadel is pleased with the jury’s decision ruling in favor of Avadel with respect to one of the contested patents. As it relates to the jury’s decision against Avadel regarding the additional contested patent, the company is disappointed in the outcome. Avadel will vigorously defend its position with the pursuit of all options, including an appeal, to overturn the unfavorable aspect of the jury’s decision upon final entry of the decision by the Court. Avadel does not expect the jury’s decision to impact the ongoing commercial launch or potential for LUMRYZ™ to transform the lives of people living with narcolepsy. About LUMRYZ™ (sodium oxybate) for extended-release oral suspension LUMRYZ, is an extended-release sodium oxybate medication approved by the FDA on May 1, 2023, as the first and only once-at-bedtime treatment for cataplexy or excessive daytime sleepiness (EDS) in adults with narcolepsy.   The FDA approval of LUMRYZ was supported by results from REST-ON, a randomized, double-blind, placebo-controlled, pivotal Phase 3 trial in adults with narcolepsy. LUMRYZ demonstrated statistically significant and clinically meaningful improvements in the three co-primary endpoints: EDS, clinicians’ overall assessment of patients’ functioning (CGI-I) and cataplexy attacks, for all three evaluated doses when compared to placebo.   With its approval, the FDA also granted seven years of Orphan Drug Exclusivity to LUMRYZ for the treatment of cataplexy or EDS in adults with narcolepsy due to a finding of clinical superiority of LUMRYZ relative to currently available oxybate treatments. In particular, the FDA found that LUMRYZ makes a major contribution to patient care over currently available, twice-nightly oxybate products by providing a once-nightly dosing regimen that avoids nocturnal arousal to take a second dose. About Avadel Pharmaceuticals plcAvadel Pharmaceuticals plc (Nasdaq: AVDL) is a biopharmaceutical company focused on transforming medicines to transform lives. Our approach includes applying innovative solutions to the development of medications that address the challenges patients face with current treatment options. Avadel’s commercial product, LUMRYZ™, was approved by the U.S. Food & Drug Administration (FDA) as the first and only once-at-bedtime oxybate for the treatment of cataplexy or excessive daytime sleepiness (EDS) in adults with narcolepsy. For more information, please visit www.avadel.com. IMPORTANT SAFETY INFORMATION WARNING: Taking LUMRYZ™ (sodium oxybate) with other central nervous system (CNS) depressants, such as medicines used to make you fall asleep, including opioid analgesics, benzodiazepines, sedating antidepressants, antipsychotics, sedating anti-epileptic medicines, general anesthetics, muscle relaxants, alcohol or street drugs, may cause serious medical problems, including trouble breathing (respiratory depression), low blood pressure (hypotension), changes in alertness (drowsiness), fainting (syncope) and death.The active ingredient of LUMRYZ (sodium oxybate) is a form of gamma hydroxybutyrate (GHB), a controlled substance. Abuse or misuse of illegal GHB alone or with other CNS depressants (drugs that cause changes in alertness or consciousness) have caused serious side effects. These effects include seizures, trouble breathing (respiratory depression), changes in alertness (drowsiness), coma and death. Call your doctor right away if you have any of these serious side effects.Because of these risks, LUMRYZ is available only by prescription and filled through certified pharmacies in the LUMRYZ REMS. You must be enrolled in the LUMRYZ REMS to receive LUMRYZ. Further information is available at www.LUMRYZREMS.com or by calling 1-877-453-1029. INDICATIONSLUMRYZ (sodium oxybate) for extended-release oral suspension is a prescription medicine used to treat the following symptoms in adults with narcolepsy: sudden onset of weak or paralyzed muscles (cataplexy)excessive daytime sleepiness (EDS) It is not known if LUMRYZ is safe and effective in people less than 18 years of age. Do not take LUMRYZ if you take other sleep medicines or sedatives (medicines that cause sleepiness), drink alcohol or have a rare problem called succinic semialdehyde dehydrogenase deficiency. Keep LUMRYZ in a safe place to prevent abuse and misuse. Selling or giving away LUMRYZ may harm others and is against the law. Tell your doctor if you have ever abused or been dependent on alcohol, prescription medicines or street drugs. Anyone who takes LUMRYZ should not do anything that requires them to be fully awake or is dangerous, including driving a car, using heavy machinery or flying an airplane, for at least six (6) hours after taking LUMRYZ. Those activities should not be done until you know how LUMRYZ affects you. Falling asleep quickly, including while standing or while getting up from the bed, has led to falls with injuries that have required some people to be hospitalized. LUMRYZ can cause serious side effects, including the following: Breathing problems, including slower breathing, trouble breathing and/or short periods of not breathing while sleeping (e.g., sleep apnea). People who already have breathing or lung problems have a higher chance of having breathing problems when they take LUMRYZ.Mental health problems, including confusion, seeing or hearing things that are not real (hallucinations), unusual or disturbing thoughts (abnormal thinking), feeling anxious or upset, depression, thoughts of killing yourself or trying to kill yourself, increased tiredness, feelings of guilt or worthlessness and difficulty concentrating. Tell your doctor if you have or had depression or have tried to harm yourself. Call your doctor right away if you have symptoms of mental health problems or a change in weight or appetite.Sleepwalking. Sleepwalking can cause injuries. Call your doctor if you start sleepwalking. Tell your doctor if you are on a salt-restricted diet or if you have high blood pressure, heart failure or kidney problems. LUMRYZ contains a lot of sodium (salt) and may not be right for you. The most common side effects of LUMRYZ in adults include nausea, dizziness, bedwetting, headache and vomiting. Your side effects may increase when you take higher doses of LUMRYZ. LUMRYZ can cause physical dependence and craving for the medicine when it is not taken as directed. These are not all the possible side effects of LUMRYZ. For more information, ask your doctor or pharmacist. Call your doctor for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088. Please see full Prescribing Information, including BOXED Warning. Cautionary Disclosure Regarding Forward-Looking Statements This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements relate to our future expectations, beliefs, plans, strategies, objectives, results, conditions, financial performance, prospects or other events. Such forward-looking statements include, but are not limited to, expectations regarding the outcome of the litigation involving Jazz Pharmaceuticals Inc.; Avadel’s intent to pursue options to overturn certain aspects of the jury’s decision; and the potential disruption or adverse effect on the launch efforts for LUMRYZ. In some cases, forward-looking statements can be identified by the use of words such as “will,” “may,” “could,” “believe,” “expect,” “look forward,” “on track,” “guidance,” “anticipate,” “estimate,” “project,” “next steps” and similar expressions and the negatives thereof (if applicable). The Company’s forward-looking statements are based on estimates and assumptions that are made within the bounds of our knowledge of our business and operations and that we consider reasonable. However, the Company’s business and operations are subject to significant risks, and, as a result, there can be no assurance that actual results and the results of the company’s business and operations will not differ materially from the results contemplated in such forward-looking statements. Factors that could cause actual results to differ from expectations in the Company’s forward-looking statements include the risks and uncertainties described in the “Risk Factors” section of Part I, Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the Securities and Exchange Commission (SEC) on February 29, 2024, and subsequent SEC filings. Forward-looking statements speak only as of the date they are made and are not guarantees of future performance. Accordingly, you should not place undue reliance on forward-looking statements. The Company does not undertake any obligation to publicly update or revise our forward-looking statements, except as required by law. Investor Contact:Courtney MogerleyStern Investor Relations, Inc.Courtney.Mogerley@sternir.com (212) 698-8687 Media Contact:Lesley StanleyReal Chemistrylestanley@realchemistry.com(609) 273-3162

-- Generated $19.5 million in fourth quarter and $28.0 million of full year 2023 net revenue from sales of LUMRYZ™ -- -- As of January 31st, greater than 2,200 patients enrolled in RYZUPTM and more than 1,200 patients initiated therapy -- -- Payer coverage now in place for greater than 80% of commercially covered lives for LUMRYZ through new listings including United Healthcare and Anthem -- -- FDA target action date of September 7, 2024, issued for the Supplemental New Drug Application (sNDA) for LUMRYZ in pediatric narcolepsy-- -- Management to host a conference call today at 7:30 a.m. ET -- DUBLIN, Ireland, March 04, 2024 (GLOBE NEWSWIRE) -- Avadel Pharmaceuticals plc (Nasdaq: AVDL), a biopharmaceutical company focused on transforming medicines to transform lives, today provided a corporate update and announced its financial results for the fourth quarter ended December 31, 2023. “We are carrying significant momentum into 2024 following the successful launch of LUMRYZ and are pleased with the strong early launch results we have seen. We have established a strong foundation with patients, prescribers and payers to build on and advance our mission of transforming the lives of people living with narcolepsy,” said Greg Divis, Chief Executive Officer of Avadel Pharmaceuticals. “While the launch is still in the early stages, we believe the meaningful increase in patients initiating therapy with LUMRYZ underscores the significant unmet need for a once-at-bedtime therapy. We look forward to expanding the LUMRYZ indication for the pediatric narcolepsy population with the anticipated approval decision in September, initiating our Phase 3 pivotal trial program in idiopathic hypersomnia and continuing our robust commercial execution throughout 2024.” Fourth Quarter and Recent Company Highlights LUMRYZ Commercial Updates Through the End of January 2024: Greater than 2,200 patients enrolled in Avadel’s RYZUP patient support services: More than 1,200 patients initiated therapy.The majority of RYZUP enrollments and patients currently being treated with LUMRYZ are patients who switched from first generation oxybates, with the balance made up of patients who previously tried and discontinued a first generation oxybate and patients who are new to oxybate treatment. Secured payor coverage policies for greater than 80% of commercially covered lives with the inclusion of Anthem and the United Healthcare national formulary. Contracts now established with all 3 PBM-owned GPOs (Ascent/ESI, Zinc/CVS and Emisar/Optum). Approximately 1,900 health care providers have completed the LUMRYZ REMS certification process, including both experienced oxybate prescribers as well as providers who have never previously prescribed an oxybate. Pipeline Updates: U.S. Food and Drug Administration (FDA) accepted the Supplemental New Drug Application (sNDA) for LUMRYZ for treatment of cataplexy or EDS in the pediatric narcolepsy population. The FDA has assigned a target action date of September 7, 2024, for its approval decision.With potential approval in the pediatric population, LUMRYZ could alleviate the burden placed on families and caregivers of children with narcolepsy who are responsible for waking up in the middle of the night to administer a second dose.Pediatric patients currently represent approximately 3-5% of all oxybate treated narcolepsy patients.Planning to enroll the first patient in a clinical study for the use of LUMRYZ to treat idiopathic hypersomnia in the second half of 2024. Overview of Fourth Quarter and Full Year Results Recognized $19.5 million and $28.0 million in net product revenue for the quarter and year ended December 31, 2023, respectively. Net product revenue consists of LUMRYZ product sales, which was launched in the U.S. on June 5, 2023. R&D expenses for the quarter and year ended December 31, 2023, were $2.4 million and $13.3 million, respectively, compared to $6.2 million and $20.7 for the same periods in 2022. The decreases were driven primarily by lower pre-commercial LUMRYZ related costs that were capitalized into inventory beginning in May 2023 upon FDA approval of LUMRYZ. SG&A expenses for the quarter and year ended December 31, 2023, were $41.3 million and $151.7 million, compared to $17.0 million and $74.5 million for the same periods in 2022. These increases were driven primarily by higher costs associated with the commercial launch of LUMRYZ, higher compensation costs due to increased headcount, higher marketing and market research activities, and higher legal fees. Net losses for the quarter and year ended December 31, 2023, were $28.8 million, or ($0.32) per diluted share and $160.3 million, or ($2.00) per diluted share, respectively, compared to net losses of $27.5 million, or ($0.44) per diluted share, and $137.5 million, or ($2.29) per diluted share, for the same periods in 2022. Cash, cash equivalents and marketable securities were $105.1 million as of December 31, 2023. Conference call details A live audio webcast of the call can be accessed by visiting the investor relations section of the Company’s website, www.avadel.com. A replay of the webcast will be archived on Avadel’s website for 90 days following the event. Participants may register for the conference call here and are advised to do so at least 10 minutes prior to joining the call. About LUMRYZ™ (sodium oxybate) for extended-release oral suspension LUMRYZ, is an extended-release sodium oxybate medication approved by the FDA on May 1, 2023, as the first and only once-at-bedtime treatment for cataplexy or excessive daytime sleepiness (EDS) in adults with narcolepsy.   The FDA approval of LUMRYZ was supported by results from REST-ON, a randomized, double-blind, placebo-controlled, pivotal Phase 3 trial in adults with narcolepsy. LUMRYZ demonstrated statistically significant and clinically meaningful improvements in the three co-primary endpoints: EDS, clinicians’ overall assessment of patients’ functioning (CGI-I) and cataplexy attacks, for all three evaluated doses when compared to placebo.   With its approval, the FDA also granted seven years of Orphan Drug Exclusivity to LUMRYZ for the treatment of cataplexy or EDS in adults with narcolepsy due to a finding of clinical superiority of LUMRYZ relative to currently available oxybate treatments. In particular, the FDA found that LUMRYZ makes a major contribution to patient care over currently available, twice-nightly oxybate products by providing a once-nightly dosing regimen that avoids nocturnal arousal to take a second dose. About Avadel Pharmaceuticals plc Avadel Pharmaceuticals plc (Nasdaq: AVDL) is a biopharmaceutical company focused on transforming medicines to transform lives. Our approach includes applying innovative solutions to the development of medications that address the challenges patients face with current treatment options. Avadel’s commercial product, LUMRYZ, was approved by the U.S. Food & Drug Administration (FDA) as the first and only once-at-bedtime oxybate for the treatment of cataplexy or excessive daytime sleepiness (EDS) in adults with narcolepsy. For more information, please visit www.avadel.com. IMPORTANT SAFETY INFORMATION WARNING: Taking LUMRYZ™ (sodium oxybate) with other central nervous system (CNS) depressants, such as medicines used to make you fall asleep, including opioid analgesics, benzodiazepines, sedating antidepressants, antipsychotics, sedating anti-epileptic medicines, general anesthetics, muscle relaxants, alcohol or street drugs, may cause serious medical problems, including trouble breathing (respiratory depression), low blood pressure (hypotension), changes in alertness (drowsiness), fainting (syncope) and death.The active ingredient of LUMRYZ (sodium oxybate) is a form of gamma hydroxybutyrate (GHB), a controlled substance. Abuse or misuse of illegal GHB alone or with other CNS depressants (drugs that cause changes in alertness or consciousness) have caused serious side effects. These effects include seizures, trouble breathing (respiratory depression), changes in alertness (drowsiness), coma and death. Call your doctor right away if you have any of these serious side effects.Because of these risks, LUMRYZ is available only by prescription and filled through certified pharmacies in the LUMRYZ REMS. You must be enrolled in the LUMRYZ REMS to receive LUMRYZ. Further information is available at www.LUMRYZREMS.com or by calling 1-877-453-1029. INDICATIONSLUMRYZ (sodium oxybate) for extended-release oral suspension is a prescription medicine used to treat the following symptoms in adults with narcolepsy: sudden onset of weak or paralyzed muscles (cataplexy)excessive daytime sleepiness (EDS) It is not known if LUMRYZ is safe and effective in people less than 18 years of age. Do not take LUMRYZ if you take other sleep medicines or sedatives (medicines that cause sleepiness), drink alcohol or have a rare problem called succinic semialdehyde dehydrogenase deficiency. Keep LUMRYZ in a safe place to prevent abuse and misuse. Selling or giving away LUMRYZ may harm others and is against the law. Tell your doctor if you have ever abused or been dependent on alcohol, prescription medicines or street drugs. Anyone who takes LUMRYZ should not do anything that requires them to be fully awake or is dangerous, including driving a car, using heavy machinery or flying an airplane, for at least six (6) hours after taking LUMRYZ. Those activities should not be done until you know how LUMRYZ affects you. Falling asleep quickly, including while standing or while getting up from the bed, has led to falls with injuries that have required some people to be hospitalized. LUMRYZ can cause serious side effects, including the following: Breathing problems, including slower breathing, trouble breathing and/or short periods of not breathing while sleeping (e.g., sleep apnea). People who already have breathing or lung problems have a higher chance of having breathing problems when they take LUMRYZ.Mental health problems, including confusion, seeing or hearing things that are not real (hallucinations), unusual or disturbing thoughts (abnormal thinking), feeling anxious or upset, depression, thoughts of killing yourself or trying to kill yourself, increased tiredness, feelings of guilt or worthlessness and difficulty concentrating. Tell your doctor if you have or had depression or have tried to harm yourself. Call your doctor right away if you have symptoms of mental health problems or a change in weight or appetite.Sleepwalking. Sleepwalking can cause injuries. Call your doctor if you start sleepwalking. Tell your doctor if you are on a salt-restricted diet or if you have high blood pressure, heart failure or kidney problems. LUMRYZ contains a lot of sodium (salt) and may not be right for you. The most common side effects of LUMRYZ in adults include nausea, dizziness, bedwetting, headache and vomiting. Your side effects may increase when you take higher doses of LUMRYZ. LUMRYZ can cause physical dependence and craving for the medicine when it is not taken as directed. These are not all the possible side effects of LUMRYZ. For more information, ask your doctor or pharmacist. Call your doctor for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088. Please see full Prescribing Information, including BOXED Warning. Cautionary Disclosure Regarding Forward-Looking Statements This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements relate to our future expectations, beliefs, plans, strategies, objectives, results, conditions, financial performance, prospects or other events. Such forward-looking statements include, but are not limited to, expectations regarding the potential therapeutic benefit of LUMRYZ; the success of the commercialization of LUMRYZ; the anticipated market availability, demand and sales opportunity of LUMRYZ; the potential expansion of LUMRYZ into the pediatric narcolepsy population including FDA’s review of the sNDA for such population and timing related thereto; the Company’s plans and timing to initiate the idiopathic hypersomnia clinical study; the Company’s anticipated financial condition, expenses, uses of capital and other future financial results. In some cases, forward-looking statements can be identified by use of words such as “will,” “may,” “could,” “believe,” “expect,” “look forward,” “on track,” “guidance,” “anticipate,” “estimate,” “project,” “next steps” and similar expressions and the negatives thereof (if applicable). The Company’s forward-looking statements are based on estimates and assumptions that are made within the bounds of our knowledge of our business and operations and that we consider reasonable. However, the Company’s business and operations are subject to significant risks, and, as a result, there can be no assurance that actual results and the results of the company’s business and operations will not differ materially from the results contemplated in such forward-looking statements. Factors that could cause actual results to differ from expectations in the Company’s forward-looking statements include the risks and uncertainties described in the “Risk Factors” section of Part I, Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the Securities and Exchange Commission (SEC) on February 29, 2024, and subsequent SEC filings. Forward-looking statements speak only as of the date they are made and are not guarantees of future performance. Accordingly, you should not place undue reliance on forward-looking statements. The Company does not undertake any obligation to publicly update or revise our forward-looking statements, except as required by law. Investor Contact:Courtney MogerleyStern Investor Relations, Inc.Courtney.Mogerley@sternir.com (212) 698-8687 Media Contact:Lesley StanleyReal Chemistrylestanley@realchemistry.com(609) 273-3162 AVADEL PHARMACEUTICALS PLCCONDENSED CONSOLIDATED STATEMENTS OF LOSS(In thousands, except per share data)(Unaudited) Three Months Ended December 31, Twelve Months Ended December 31, 2023 2022 2023 2022 Net product revenue $19,453 $— $27,963 $— Cost of products sold 693 — 846 — Gross profit 18,760 — 27,117 — Operating expenses: Research and development expenses 2,359 6,235 13,261 20,700 Selling, general and administrative expenses 41,301 16,981 151,705 74,516 Restructuring (income) expense — (178) — 3,345 Total operating expenses 43,660 23,038 164,966 98,561 Operating loss (24,900) (23,038) (137,849) (98,561)Investment and other (expense) income, net (1,632) (1,072) 87 (536)Interest expense (2,354) (3,255) (9,886) (12,342)Loss on extinguishment of debt — — (13,129) — Loss before income taxes (28,886) (27,365) (160,777) (111,439)Income tax (benefit) provision (100) 85 (501) 26,025 Net loss $(28,786) $(27,450) $(160,276) $(137,464) Net loss per share - basic $(0.32) $(0.44) $(2.00) $(2.29)Net loss per share - diluted (0.32) (0.44) (2.00) (2.29) Weighted average number of shares outstanding - basic 89,798 62,276 80,174 60,094 Weighted average number of shares outstanding - diluted 89,798 62,276 80,174 60,094 AVADEL PHARMACEUTICALS PLCCONDENSED CONSOLIDATED BALANCE SHEETS(In thousands, except per share data) December 31, 2023 December 31, 2022 (unaudited) ASSETS Current assets: Cash and cash equivalents $31,167 $73,981 Marketable securities 73,944 22,518 Accounts receivable, net 12,103 — Inventories 10,380 — Research and development tax credit receivable 1,322 2,248 Prepaid expenses and other current assets 5,286 2,096 Total current assets 134,202 100,843 Property and equipment, net 585 839 Operating lease right-of-use assets 2,591 1,713 Goodwill 16,836 16,836 Research and development tax credit receivable 332 1,232 Other non-current assets 10,152 11,322 Total assets $164,698 $132,785 LIABILITIES AND SHAREHOLDERS’ EQUITY (DEFICIT) Current liabilities: Current portion of long-term debt $— $37,668 Current portion of operating lease liability 934 960 Accounts payable 11,433 7,890 Accrued expenses 24,227 7,334 Other current liabilities 261 1,941 Total current liabilities 36,855 55,793 Long-term debt — 91,614 Long-term operating lease liability 1,690 780 Royalty financing obligation 32,760 — Other non-current liabilities 5,654 5,743 Total liabilities 76,959 153,930 Shareholders’ equity (deficit): Preferred shares, nominal value of $0.01 per share; 50,000 shares authorized; 5,194 issued and outstanding at December 31, 2023 and 488 issued and outstanding at December 31, 2022 52 5 Ordinary shares, nominal value of $0.01 per share; 500,000 shares authorized; 89,825 issued and outstanding at December 31, 2023 and 62,878 issued and outstanding at December 31, 2022 898 628 Additional paid-in capital 855,452 589,783 Accumulated deficit (745,496) (585,220)Accumulated other comprehensive loss (23,167) (26,341)Total shareholders’ equity (deficit) 87,739 (21,145)Total liabilities and shareholders’ equity (deficit) $164,698 $132,785 AVADEL PHARMACEUTICALS PLCCONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(In thousands)(Unaudited) Twelve Months Ended December 31, 2023 2022 Cash flows from operating activities: Net loss $(160,276) $(137,464)Adjustments to reconcile net loss to net cash used in operating activities: Depreciation and amortization 1,766 1,493 Amortization of debt discount and debt issuance costs 2,796 6,052 Changes in deferred taxes — 26,025 Share-based compensation expense 15,811 7,013 Loss on extinguishment of debt 13,129 — Other adjustments 1,262 2,042 Net changes in assets and liabilities Accounts receivable (12,103) — Inventories (9,532) — Prepaid expenses and other current assets (3,127) 30,815 Research and development tax credit receivable 1,884 30 Accounts payable & other current liabilities 1,545 (3,108)Accrued expenses 16,892 227 Other assets and liabilities 1,442 (3,429)Net cash used in operating activities (128,511) (70,304) Cash flows from investing activities: Purchases of property and equipment — (716)Proceeds from sales of marketable securities 187,136 83,828 Purchases of marketable securities (237,229) (3,414)Net cash (used in) provided by investing activities (50,093) 79,698 Cash flows from financing activities: Proceeds from April 2023 public offering, net of issuance costs 134,151 — Payments for February 2023 Notes (17,500) (8,653)Payments for October 2023 Notes (21,165) — Payments for debt issuance costs (4,357) (4,804)Proceeds from royalty purchase agreement 30,000 — Proceeds from issuance of shares off the at-the-market offering program 11,913 25,318 Proceeds from stock option exercises and employee share purchase plan 2,293 2,682 Net cash provided by financing activities 135,335 14,543 Effect of foreign currency exchange rate changes on cash and cash equivalents 455 (664) Net change in cash and cash equivalents (42,814) 23,273 Cash and cash equivalents at January 1 73,981 50,708 Cash and cash equivalents at December 31 $31,167 $73,981

-- Approximately $19 million and $28 million of net revenue from sales of LUMRYZ™ estimated for the fourth quarter and full year 2023, respectively -- -- Generated continued robust demand for LUMRYZ with greater than 1,900 patients enrolled in RYZUPTM and more than 1,000 patients initiating therapy through December 31 -- -- Signed Emisar (Optum Rx GPO) contract, all 3 PBM owned GPO contracts now finalized for 2024 -- -- Supplemental New Drug Application (sNDA) for LUMRYZ in the pediatric narcolepsy population accepted by FDA; approval decision expected in September 2024 -- DUBLIN, Ireland, Jan. 08, 2024 (GLOBE NEWSWIRE) -- Avadel Pharmaceuticals plc (Nasdaq: AVDL), a biopharmaceutical company focused on transforming medicines to transform lives, today provided a business update including preliminary estimates of fourth quarter and full year net revenue and cash, cash equivalents and marketable securities. “2023 was transformational for Avadel defined by significant growth and continued execution of milestones critical to Avadel’s success, beginning with the FDA approval and receipt of Orphan Drug Exclusivity for LUMRYZ. The LUMRYZ launch has thus far been marked by robust demand and overwhelmingly positive feedback from the narcolepsy community, health care providers and payers. Our team is proud of the momentum built this year, and looking toward 2024, we are excited to see LUMRYZ’s continued impact across the narcolepsy community,” said Greg Divis, Chief Executive Officer of Avadel Pharmaceuticals. Launch Progress Through December 31, 2023: Greater than 1,900 patients enrolled in Avadel’s RYZUP patient support services: More than 1,000 patients initiated therapy.The majority of RYZUP enrollments and patients currently being treated with LUMRYZ are patients who switched from first generation oxybates, with the balance made up of patients who previously tried and discontinued a first generation oxybate and patients who are new to oxybate treatment. Signed contract with Emisar (Optum Rx GPO) Contracts now in place with all 3 PBM owned GPOs (Ascent/ESI, Zinc/CVS and Emisar/Optum).LUMRYZ moved to preferred status within the CVS commercial formularies and Optum Select as of January 1, 2024. Nearly 1,800 health care providers have completed the LUMRYZ REMS certification process, including both experienced oxybate prescribers as well as providers who have never previously prescribed an oxybate. Financial Highlights: Approximately $19 million and $28 million of net product revenue, respectively, estimated for the quarter and year ended December 31, 2023. Net product revenue consists of LUMRYZ product sales, which was launched in the U.S. on June 5, 2023.Approximately $105 million of cash, cash equivalents and marketable securities at December 31, 2023. Results reported above are preliminary, unaudited and are subject to change, perhaps materially, upon the audit of the Company’s financial statements for the year ended December 31, 2023. The Company expects to announce its full results for the twelve months ended December 31, 2023 on or before February 29, 2024. Pipeline Update: Supplemental New Drug Application (sNDA) for LUMRYZ in the pediatric narcolepsy population accepted by FDA: LUMRYZ has the potential to significantly alleviate the burden placed on families and caregivers of children with narcolepsy who are responsible for waking up in the middle of the night to administer a second dose of twice-nightly oxybate.Pediatric patients currently represent approximately 5% of all oxybate treated narcolepsy patients. About LUMRYZ™ (sodium oxybate) for extended-release oral suspension LUMRYZ, is an extended-release sodium oxybate medication approved by the FDA on May 1, 2023, as the first and only once-at-bedtime treatment for cataplexy or excessive daytime sleepiness (EDS) in adults with narcolepsy.     The FDA approval of LUMRYZ was supported by results from REST-ON, a randomized, double-blind, placebo-controlled, pivotal Phase 3 trial in adults with narcolepsy. LUMRYZ demonstrated statistically significant and clinically meaningful improvements in the three co-primary endpoints: EDS, clinicians’ overall assessment of patients’ functioning (CGI-I) and cataplexy attacks, for all three evaluated doses when compared to placebo.     With its approval, the FDA also granted seven years of Orphan Drug Exclusivity to LUMRYZ for the treatment of cataplexy or EDS in adults with narcolepsy due to a finding of clinical superiority of LUMRYZ relative to currently available oxybate treatments. In particular, the FDA found that LUMRYZ makes a major contribution to patient care over currently available, twice-nightly oxybate products by providing a once-nightly dosing regimen that avoids nocturnal arousal to take a second dose. About Avadel Pharmaceuticals plc Avadel Pharmaceuticals plc (Nasdaq: AVDL) is a biopharmaceutical company focused on transforming medicines to transform lives. Our approach includes applying innovative solutions to the development of medications that address the challenges patients face with current treatment options. Avadel’s commercial product, LUMRYZ, was approved by the U.S. Food & Drug Administration (FDA) as the first and only once-at-bedtime oxybate for the treatment of cataplexy or excessive daytime sleepiness (EDS) in adults with narcolepsy. For more information, please visit www.avadel.com. IMPORTANT SAFETY INFORMATION WARNING: Taking LUMRYZ™ (sodium oxybate) with other central nervous system (CNS) depressants, such as medicines used to make you fall asleep, including opioid analgesics, benzodiazepines, sedating antidepressants, antipsychotics, sedating anti-epileptic medicines, general anesthetics, muscle relaxants, alcohol or street drugs, may cause serious medical problems, including trouble breathing (respiratory depression), low blood pressure (hypotension), changes in alertness (drowsiness), fainting (syncope) and death.The active ingredient of LUMRYZ (sodium oxybate) is a form of gamma hydroxybutyrate (GHB), a controlled substance. Abuse or misuse of illegal GHB alone or with other CNS depressants (drugs that cause changes in alertness or consciousness) have caused serious side effects. These effects include seizures, trouble breathing (respiratory depression), changes in alertness (drowsiness), coma and death. Call your doctor right away if you have any of these serious side effects.Because of these risks, LUMRYZ is available only by prescription and filled through certified pharmacies in the LUMRYZ REMS. You must be enrolled in the LUMRYZ REMS to receive LUMRYZ. Further information is available at www.LUMRYZREMS.com or by calling 1-877-453-1029. INDICATIONSLUMRYZ (sodium oxybate) for extended-release oral suspension is a prescription medicine used to treat the following symptoms in adults with narcolepsy: sudden onset of weak or paralyzed muscles (cataplexy)excessive daytime sleepiness (EDS) It is not known if LUMRYZ is safe and effective in people less than 18 years of age. Do not take LUMRYZ if you take other sleep medicines or sedatives (medicines that cause sleepiness), drink alcohol or have a rare problem called succinic semialdehyde dehydrogenase deficiency. Keep LUMRYZ in a safe place to prevent abuse and misuse. Selling or giving away LUMRYZ may harm others and is against the law. Tell your doctor if you have ever abused or been dependent on alcohol, prescription medicines or street drugs. Anyone who takes LUMRYZ should not do anything that requires them to be fully awake or is dangerous, including driving a car, using heavy machinery or flying an airplane, for at least six (6) hours after taking LUMRYZ. Those activities should not be done until you know how LUMRYZ affects you. Falling asleep quickly, including while standing or while getting up from the bed, has led to falls with injuries that have required some people to be hospitalized. LUMRYZ can cause serious side effects, including the following: Breathing problems, including slower breathing, trouble breathing and/or short periods of not breathing while sleeping (e.g., sleep apnea). People who already have breathing or lung problems have a higher chance of having breathing problems when they take LUMRYZ.Mental health problems, including confusion, seeing or hearing things that are not real (hallucinations), unusual or disturbing thoughts (abnormal thinking), feeling anxious or upset, depression, thoughts of killing yourself or trying to kill yourself, increased tiredness, feelings of guilt or worthlessness and difficulty concentrating. Tell your doctor if you have or had depression or have tried to harm yourself. Call your doctor right away if you have symptoms of mental health problems or a change in weight or appetite.Sleepwalking. Sleepwalking can cause injuries. Call your doctor if you start sleepwalking. Tell your doctor if you are on a salt-restricted diet or if you have high blood pressure, heart failure or kidney problems. LUMRYZ contains a lot of sodium (salt) and may not be right for you. The most common side effects of LUMRYZ in adults include nausea, dizziness, bedwetting, headache and vomiting. Your side effects may increase when you take higher doses of LUMRYZ. LUMRYZ can cause physical dependence and craving for the medicine when it is not taken as directed. These are not all the possible side effects of LUMRYZ. For more information, ask your doctor or pharmacist. Call your doctor for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088. Please see full Prescribing Information, including BOXED Warning. Cautionary Disclosure Regarding Forward-Looking Statements This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements relate to our future expectations, beliefs, plans, strategies, objectives, results, conditions, financial performance, prospects or other events. Such forward-looking statements include, but are not limited to, expectations regarding the potential therapeutic benefit of LUMRYZ; the success of the commercialization of LUMRYZ; the anticipated market availability, demand and sales opportunity of LUMRYZ; the potential benefits of payor coverage, including preferred status; and the Company’s expectations regarding its financial results for the fourth quarter and full year 2023. In some cases, forward-looking statements can be identified by the use of words such as “will,” “may,” “could,” “believe,” “expect,” “look forward,” “on track,” “guidance,” “anticipate,” “estimate,” “project,” “next steps” and similar expressions and the negatives thereof (if applicable). The Company’s forward-looking statements are based on estimates and assumptions that are made within the bounds of our knowledge of our business and operations and that we consider reasonable. However, the Company’s business and operations are subject to significant risks, and, as a result, there can be no assurance that actual results and the results of the company’s business and operations will not differ materially from the results contemplated in such forward-looking statements. Factors that could cause actual results to differ from expectations in the Company’s forward-looking statements include final audit adjustments and other developments that may arise that would cause the Company’s expectations with respect to the fourth quarter and full year 2023 revenue estimates and cash as of December 31, 2023 to differ, perhaps materially, from the financial results that will be reflected in the Company’s audited consolidated financial statements for the fiscal year ended December 31, 2023, and the risks and uncertainties described in the “Risk Factors” section of Part I, Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, which was filed with the Securities and Exchange Commission (SEC) on March 29, 2023, and subsequent SEC filings. Forward-looking statements speak only as of the date they are made and are not guarantees of future performance. Accordingly, you should not place undue reliance on forward-looking statements. The Company does not undertake any obligation to publicly update or revise our forward-looking statements, except as required by law. Investor Contact:Courtney MogerleyStern Investor Relations, Inc.Courtney.Mogerley@sternir.com (212) 698-8687 Media Contact:Lesley StanleyReal Chemistrylestanley@realchemistry.com (609) 273-3162