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PLYMOUTH MEETING, PA, November 16, 2023 — Harmony Biosciences Holdings, Inc. (“Harmony” or the “Company”) (Nasdaq: HRMY), a pharmaceutical company dedicated to developing and commercializing innovative therapies for patients with rare neurological diseases, today announced that Harmony's management team will participate in a fireside chat at the upcoming Piper Sandler 35^th Annual Healthcare Conference in New York, NY on Thursday, November 30, 2023, at 9:00 a.m. ET.

A webcast of the fireside chat will be available on the investor page of Harmony's website at https://ir.harmonybiosciences.com/.

About Harmony Biosciences
At Harmony Biosciences,we specialize in developing and delivering treatments for rare neurological diseases that others often overlook. We believe that where empathy and innovation meet, a better life can begin for people living with neurological diseases. Established by Paragon Biosciences, LLC, in 2017 and headquartered in Plymouth Meeting, PA, our team of experts from a wide variety of disciplines and experiences is driven by our shared conviction that innovative science translates into therapeutic possibilities for our patients, who are at the heart of everything we do. For more information, please visit www.harmonybiosciences.com.

Harmony Biosciences Investor Contact:
Luis Sanay, CFA
445-235-8386
lsanay@harmonybiosciences.com

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