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Harmony Biosciences Announces Poster Presentation at the 17th European Narcolepsy Days

Key Takeaway: Harmony Biosciences has announced a poster presentation at the 17th European Narcolepsy Days, showcasing data from its ongoing Phase 3 trials of HBS-301. The trials include ONSTRIDE-1 for narcolepsy and ONSTRIDE-2 for idiopathic hypersomnia. HBS-301 is an investigational formulation aimed at treating excessive daytime sleepiness in these conditions.

Market Sentiment Analysis

POSITIVE FACTORS

  • Presentation at a significant European event highlights research progress.
  • Ongoing Phase 3 trials indicate advancement in narcolepsy treatment.
  • HBS-301 shows promise for patients with narcolepsy and idiopathic hypersomnia.

BiopharmaWatch Analysis

From our catalyst data and publicly available data · not financial advice
Best trade, last catalyst
+43%
120-day peak, hindsight
Typical move
3.3%
average across 5 past catalysts
Lead asset
Clemizole
Phase 3 · Lennox Gastaut Syndrome

Full Press Release Details

PLYMOUTH MEETING, Pa., Oct. 01, 2026 (GLOBE NEWSWIRE) -- Harmony Biosciences Holdings, Inc. (Nasdaq: HRMY) today announced that it will present a poster featuring information from its ongoing Phase 3 trials of HBS-301, including ONSTRIDE-1 in narcolepsy and ONSTRIDE-2 in idiopathic hypersomnia. This poster will be presented at the 17th European Narcolepsy Days, taking place October 2–3, 2026, in Bern, Switzerland.
Poster details are listed below:
Abstract Title: Phase 3, randomized, double-blind, placebo-controlled studies of HBS-301 for narcolepsy and idiopathic hypersomnia
Date/Times: October 2, 16:30 (CEST) October 3, 12:30 (CEST)
About HBS-301 HBS-301 is an investigational, optimized, high-dose formulation of enteric-coated pitolisant tablets. HBS-301 is being developed in multiple tablet strengths up to 60 mg to treat excessive daytime sleepiness and other symptoms in patients with narcolepsy or idiopathic hypersomnia (IH). HBS-301 is currently being evaluated in two phase 3 clinical trials. The ONSTRIDE-1 study in adult patients with narcolepsy and the ONSTRIDE-2 study in adult patients with IH.
About Harmony Biosciences Harmony Biosciences is a pharmaceutical company dedicated to developing and commercializing innovative therapies for patients with rare neurological diseases who have unmet medical needs. Driven by novel science, visionary thinking, and a commitment to those who feel overlooked, Harmony Biosciences is nurturing a future full of therapeutic possibilities that may enable patients with rare neurological diseases to truly thrive. Established by Paragon Biosciences, LLC, in 2017 and headquartered in Plymouth Meeting, Pa., we believe that when empathy and innovation meet, a better future can begin; a vision evident in the therapeutic innovations we advance, the culture we cultivate, and the community programs we foster. For more information, please visit www.harmonybiosciences.com.

Harmony Biosciences Investor Contact: Brennan Doyle 484-566-3685 bdoyle@harmonybiosciences.com

Harmony Biosciences Media Contact: Cate McCanless 202-641-6086 cmccanless@harmonybiosciences.com

Frequently Asked Questions

What is HBS-301?

HBS-301 is an investigational, high-dose formulation of enteric-coated pitolisant tablets.

What conditions does HBS-301 aim to treat?

HBS-301 is developed to treat excessive daytime sleepiness in narcolepsy and idiopathic hypersomnia.

When will the European Narcolepsy Days take place?

The 17th European Narcolepsy Days will occur on October 2-3, 2026.

What are the ONSTRIDE-1 and ONSTRIDE-2 studies?

ONSTRIDE-1 and ONSTRIDE-2 are Phase 3 clinical trials evaluating HBS-301 in narcolepsy and idiopathic hypersomnia.

Last updated: Oct 1, 2026