WAKIX® (pitolisant) Net Revenue of $184.7 Million for First Quarter 2025; Representing 20% Growth Year-over-Year; Reiterates Guidance of $820-$860M
Net Income Grew 19% Year-over-Year, Building on Four Consecutive Years of Profitability; Increased Cash and Investments to Over $600 Million on Balance Sheet
Completed Recruitment of Phase 3 Registrational Trial of ZYN002 in Fragile X Syndrome; On Track for Topline Data in Q3
BP1.15205, Potential Best in Class Orexin, Data to Be Presented at SLEEP 2025 Conference in June
On Track for Initiation of Next-Generation Pitolisant-HD Phase 3 Registrational Trials in Narcolepsy & IH in Q4
Conference Call and Webcast to be Held Today at 8:30 a.m. ET
PLYMOUTH MEETING, Pa.--(BUSINESS WIRE)-- Harmony Biosciences Holdings, Inc. (Nasdaq: HRMY) today announced strong year-over-year revenue growth for WAKIX® of 20% in the first quarter 2025, on its way to a potential $1B+ opportunity in narcolepsy alone and poised for additional growth from its next-gen pitolisant development programs. The company has demonstrated four consecutive years of profitability and has grown its cash and investments position to over $600M.
“Building off of our strong foundation of commercial success, we are poised for significant momentum throughout the rest of the year, driven by the upcoming catalysts from our robust, late-stage pipeline,” said Jeffrey M. Dayno, M.D., President and Chief Executive Officer of Harmony Biosciences. “Our next major clinical milestone, topline data readout from our Phase 3 registrational trial of ZYN002 in patients with Fragile X syndrome, the RECONNECT Study, is on track for Q3. A positive readout could put us on a path toward the first ever approved treatment for this patient community. I am proud of the unique profile we have created at Harmony, a profitable, self-funding biotech company, with a robust pipeline, that has the potential to help hundreds of thousands of patients living with unmet medical needs while creating significant, long-term value.”
Franchise Highlights
Sleep/Wake Franchise
WAKIX in Narcolepsy
- Net Revenue was $184.7 million for Q1 2025
- 2025 Net Revenue projected between $820 to $860 million
- The average number of patients on WAKIX increased to approximately 7,200 for Q1 2025 and we exited the quarter with approximately 7,300 patients
Pitolisant HD (high-dose)
- Higher dose and optimized pharmacokinetic profile designed for greater efficacy in narcolepsy; development program to pursue multiple additional indications
- Phase 3 registrational trial in narcolepsy designed for greater efficacy in excessive daytime sleepiness and cataplexy; also to include endpoint on narcolepsy-related fatigue in pursuit of differentiated label
- Phase 3 registrational trial in IH to include endpoint on sleep inertia in pursuit of differentiated label
- On track to initiate Phase 3 registrational trials in both narcolepsy and IH in Q4 2025 with potential PDUFA dates in 2028
- Utility patents filed out to 2044 for narcolepsy and IH
Pitolisant GR (gastro-resistant)
- Pivotal bioequivalence study initiated in March 2025
- Topline data readout anticipated in Q3 2025 with potential PDUFA date in 2026
- Utility patents filed out to 2044
Orexin-2 receptor agonist (BP1.15205)
- Comprehensive preclinical safety and efficacy data to be presented at SLEEP 2025 (June)
- Potential to be best-in-class orexin-2 receptor agonist based on a novel chemical scaffold, preclinical potency, selectivity and safety data, as well as its potential for once-a-day dosing
- IMPD submission on track for mid-2025; first-in-human study expected to initiate 2H 2025 with clinical data anticipated in 2026
Neurobehavioral Franchise
ZYN002
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Completed recruitment of Phase 3 registrational trial, the RECONNECT Study, in patients with Fragile X syndrome (FXS); on track for topline data readout in Q3
- RECONNECT Study is designed to confirm the positive findings from the prespecified analysis of the primary outcome in the subgroup of patients with complete methylation from the Phase 2/3 CONNECT Study
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Promising new open-label extension (OLE) data shows benefit in patients with FXS
- Participants in the OLE trial demonstrated clinically meaningful improvements in behavioral symptoms as measured by the Aberrant Behavior Checklist – Community (ABC-CFXS Irritability)
- More than 60% of participants achieved clinically meaningful improvement of at least 9 points on the ABC-CFXS Irritability scores out to 3 years
- Potential to be the first and only approved treatment for patients with FXS; 80,000 patients in the U.S. and Harmony possesses global rights
- Prepared to initiate Phase 3 registrational trial in 22q11.2 deletion syndrome (22q) in Q4 2025 (pending positive data from the RECONNECT Study)
Rare Epilepsy Franchise
EPX-100 (clemizole hydrochloride)
- Most advanced development program in the 5HT2 (serotonin) agonist class
- Recruitment ongoing for Phase 3 registrational trial in Dravet syndrome (ARGUS Study) with topline data anticipated in 2026
- Recruitment ongoing for Phase 3 registrational trial in patients with Lennox-Gastaut syndrome (LIGHTHOUSE Study) with topline data anticipated in 2026
EPX-200 (lorcaserin hydrochloride)
- Proven mechanism of action in developmental and epileptic encephalopathies (DEEs) confirmed via non-clinical and clinical data
- Currently in IND enabling stage
First Quarter 2025 Financial Results
Net product revenue for the quarter ended March 31, 2025, was $184.7 million, compared to $154.6 million for the same period in 2024. The 20% growth versus the same period in 2024 is primarily attributed to strong commercial sales of WAKIX driven by continued organic demand tapping into a large market opportunity (approximately 80,000 patients diagnosed with narcolepsy in the U.S.) and the broad clinical utility of WAKIX across the approximately 9,000 HCPs that we call on (about 5,000 of whom do not participate in an oxybate REMS program).
GAAP net income for the quarter ended March 31, 2025, was $45.6 million, or $0.78 earnings per diluted share, compared to GAAP net income of $38.3 million, or $0.67 earnings per diluted share, for the same period in 2024. Non-GAAP adjusted net income was $60.4 million, or $1.03 earnings per diluted share, for the quarter ended March 31, 2025, compared to Non-GAAP adjusted net income of $50.7 million, or $0.88 per diluted share, for the same period in 2024.
Reconciliations of applicable GAAP financial measures to Non-GAAP financial measures are included at the end of this press release.
Harmony’s operating expenses include the following:
- Research and Development expenses were $34.5 million in the first quarter of 2025, as compared to $22.2 million for the same quarter in 2024, representing a 56% increase;
- Sales and Marketing expenses were $30.7 million in the first quarter of 2025, as compared to $27.2 million for the same quarter in 2024, representing a 13% increase;
- General and Administrative expenses were $31.2 million in the first quarter of 2025, as compared to $25.7 million for the same quarter in 2024, representing a 22% increase; and
- Total Operating Expenses were $96.5 million in the first quarter of 2025, as compared to $75.1 million for the same quarter in 2024, representing a 29% increase.
As of March 31, 2025, Harmony had cash, cash equivalents and investments of $610.2 million, compared to $576.1 million as of December 31, 2024.
2025 Net Product Revenue Guidance
Expect full year 2025 net product revenue of $820 million to $860 million.
Conference Call Today at 8:30 a.m. ET
We are hosting our first quarter 2025 financial results conference call and webcast today, beginning at 8:30 a.m. Eastern Time. The live and replay webcast of the call will be available on the investor relations page of our website https://ir.harmonybiosciences.com/. To participate in the live call by phone, dial 800-267-6316 (domestic) or 203-518-9783 (international), and reference passcode HRMYQ125.
Non-GAAP Financial Measures
In addition to our GAAP results, we present certain Non-GAAP measures including Non-GAAP adjusted net income and Non-GAAP adjusted net income per share, which we believe provides important supplemental information to management and investors regarding our performance. These measurements are not a substitute for GAAP measurements, and the manner in which we calculate Non-GAAP adjusted net income and Non-GAAP adjusted net income per share may not be identical to the manner in which other companies calculate adjusted net income and adjusted net income per share. We use these Non-GAAP measurements as an aid in monitoring our financial performance from quarter-to-quarter and year-to-year and for benchmarking against comparable companies. Non-GAAP financial measures should not be considered in isolation or as a substitute for comparable GAAP measures; should be read in conjunction with our consolidated financial statements prepared in accordance with GAAP; have no standardized meaning prescribed by GAAP; and are not prepared under any comprehensive set of accounting rules or principles. In addition, from time to time in the future there may be other items that we may exclude for purposes of our Non-GAAP financial measures; and we may in the future cease to exclude items that we have historically excluded for purposes of our Non-GAAP financial measures.
About WAKIX® (pitolisant) Tablets
WAKIX, a first-in-class medication, is approved by the U.S. Food and Drug Administration for the treatment of excessive daytime sleepiness (EDS) or cataplexy in adult patients with narcolepsy and for the treatment of EDS in pediatric patients 6 years of age and older with narcolepsy. It was granted orphan drug designation for the treatment of narcolepsy in 2010, and breakthrough therapy designation for the treatment of cataplexy in 2018. WAKIX is a selective histamine 3 (H₃) receptor antagonist/inverse agonist. The mechanism of action of WAKIX is unclear; however, its efficacy could be mediated through its activity at H₃ receptors, thereby increasing the synthesis and release of histamine, a wake promoting neurotransmitter. WAKIX was designed and developed by Bioprojet (France). Harmony has an exclusive license from Bioprojet to develop, manufacture and commercialize pitolisant in the United States.
Indications and Usage
WAKIX is indicated for the treatment of excessive daytime sleepiness (EDS) or cataplexy in adult patients with narcolepsy and for the treatment of excessive daytime sleepiness (EDS) in pediatric patients 6 years of age and older with narcolepsy.
Important Safety Information
Contraindications
WAKIX is contraindicated in patients with known hypersensitivity to pitolisant or any component of the formulation. Anaphylaxis has been reported. WAKIX is also contraindicated in patients with severe hepatic impairment.
Warnings and Precautions
WAKIX prolongs the QT interval; avoid use of WAKIX in patients with known QT prolongation or in combination with other drugs known to prolong the QT interval. Avoid use in patients with a history of cardiac arrhythmias, as well as other circumstances that may increase the risk of the occurrence of torsade de pointes or sudden death, including symptomatic bradycardia, hypokalemia or hypomagnesemia, and the presence of congenital prolongation of the QT interval.
The risk of QT prolongation may be greater in patients with hepatic or renal impairment due to higher concentrations of pitolisant; monitor these patients for increased QTc. Dosage modification is recommended in patients with moderate hepatic impairment and moderate or severe renal impairment. WAKIX is contraindicated in patients with severe hepatic impairment and not recommended in patients with end-stage renal disease (ESRD).
Adverse Reactions
In the placebo-controlled clinical trials conducted in patients with narcolepsy with or without cataplexy, the most common adverse reactions (≥5% and at least twice placebo) for WAKIX were insomnia (6%), nausea (6%), and anxiety (5%). Other adverse reactions that occurred at ≥2% and more frequently than in patients treated with placebo included headache, upper respiratory tract infection, musculoskeletal pain, heart rate increased, hallucinations, irritability, abdominal pain, sleep disturbance, decreased appetite, cataplexy, dry mouth, and rash.
In the placebo-controlled phase of the clinical trial conducted in pediatric patients 6 years and older with narcolepsy with or without cataplexy, the most common adverse reactions (≥5% and greater than placebo) for WAKIX were headache (19%) and insomnia (7%). The overall adverse reaction profile of WAKIX in the pediatric clinical trial was similar to that seen in the adult clinical trial program.
Drug Interactions
Concomitant administration of WAKIX with strong CYP2D6 inhibitors increases pitolisant exposure by 2.2-fold. Reduce the dose of WAKIX by half.
Concomitant use of WAKIX with strong CYP3A4 inducers decreases exposure of pitolisant by 50%. Dosage adjustments may be required.
H1 receptor antagonists that cross the blood-brain barrier may reduce the effectiveness of WAKIX. Patients should avoid centrally acting H1 receptor antagonists.
WAKIX is a borderline/weak inducer of CYP3A4. WAKIX may reduce the effectiveness of sensitive CYP3A4 substrates, including hormonal contraceptives. Patients using hormonal contraception should be advised to use an alternative non-hormonal contraceptive method during treatment with WAKIX and for at least 21 days after discontinuing treatment.
Use in Specific Populations
There is a pregnancy exposure registry that monitors pregnancy outcomes in women who are exposed to WAKIX during pregnancy. Patients should be encouraged to enroll in the WAKIX pregnancy registry if they become pregnant. To enroll or obtain information from the registry, patients can call 1-800-833-7460.
The safety and effectiveness of WAKIX have not been established for treatment of excessive daytime sleepiness in pediatric patients less than 6 years of age with narcolepsy.
The safety and effectiveness of WAKIX have not been established for treatment of cataplexy in pediatric patients with narcolepsy.
WAKIX is extensively metabolized by the liver. WAKIX is contraindicated in patients with severe hepatic impairment. Dosage adjustment is required in patients with moderate hepatic impairment.
WAKIX is not recommended in patients with end-stage renal disease. Dosage adjustment of WAKIX is recommended in patients with eGFR

