Executives/Harmony Biosciences CEO
Jeffrey M. Dayno, CEO of Harmony Biosciences

Who is the CEO of Harmony Biosciences in 2026?

Jeffrey M. Dayno is the Chief Executive Officer and President of Harmony Biosciences. Jeffrey has held the CEO seat since 2024, and was previously Chief Medical Officer at Egalet Corporation.

Updated September 24, 2026
Time in seat
2 years
CEO since 2024
Years at company
8 years
Joined Harmony Biosciences November 2017
Career span
28 years
First recorded role January 1998
Summary
  • Jeffrey M. Dayno rose through Harmony Biosciences: Executive Vice President and Chief Medical Officer from November 2017, then President & Chief Executive Officer from April 2023, before taking the CEO seat in 2024.
  • Jeffrey M. Dayno was Vice President, Global Medical Affairs at Ex- Viropharma linkedin page from August 2011 to April 2014.
  • Jeffrey M. Dayno holds a bachelor of Arts (B.A.), International/Global Studies from Trinity College-Hartford and a doctor of Medicine (MD), Medicine from Temple University School of Medicine.

Current company

Harmony Biosciences

Harmony Biosciences is a commercial-stage biopharmaceutical company dedicated to developing and delivering innovative therapies for people living with rare and other neurological diseases with unmet medical needs.

Pharmaceutical ManufacturingHeadquartered in Plymouth MeetingFounded 2017Nasdaq: HRMY

Source: Harmony Biosciences on LinkedIn
View Harmony Biosciences headcount

Career and education

Jeffrey M. Dayno joined Harmony Biosciences in November 2017 and has been CEO since 2024. Before Harmony Biosciences, Jeffrey was Chief Medical Officer at Egalet Corporation from July 2014 until November 2017.

Career

  1. Harmony Biosciences2017 to 2023
    • President & Chief Executive OfficerApril 2023, end not stated
    • Interim Chief Executive OfficerJanuary 2023 to April 2023
    • Executive Vice President and Chief Medical OfficerNovember 2017 to January 2023
  2. Egalet Corporation2014 to 2017
    • Chief Medical Officer
  3. Ex- Viropharma linkedin page2011 to 2014
    • Vice President, Global Medical Affairs
  4. Labopharm2010 to 2011
    • Chief Medical Officer
  5. Cephalon2005 to 2010
    • Vice President, Medical Affairs
  6. Merck1998 to 2005
    • Senior Medical Director

Sources: LinkedIn profile

Education

Trinity College-Hartford, Bachelor of Arts (B.A.), International/Global StudiesTemple University School of Medicine, Doctor of Medicine (MD), MedicineSource

Decision makers by function

20+ decision makers at Harmony Biosciences in Unify, vice president level and above. Choose a function to see who leads it.

Decision maker preview

Top decision makers at Harmony Biosciences

Vice president level and above, most senior first
Glenn ReicinChief Financial Officer · USA@harmonybiosciences.com
Roger L SharpSenior Vice President of Sales · USA@harmonybiosciences.com
Jennell SkinnerVice President, Commercial Operations · USA@harmonybiosciences.com
Edio ZampaglioneVP, Head of Medical Affairs · USA@harmonybiosciences.com
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Leadership team at Harmony Biosciences

Jeffrey M. Dayno leads a leadership team of 11 published executives.

Most senior 5 of 11

NameTitleIn seat since
Jeffrey M. DaynoPresident and Chief Executive Officer2024
Peter AnastasiouChief Operating OfficerNot stated
Christian UlrichExecutive Vice President, General Counsel & Corporate SecretaryNot stated
Kumar BudurChief Medical and Scientific OfficerNot stated
Adam ZaeskeExecutive Vice President and Chief Commercial OfficerNot stated

Sources: Harmony Biosciences senior leadership page

Frequently asked questions

Who is the CEO of Harmony Biosciences?

Jeffrey M. Dayno is the Chief Executive Officer and President of Harmony Biosciences. Jeffrey has held the CEO seat since 2024, and was previously Chief Medical Officer at Egalet Corporation.

When did Jeffrey M. Dayno become CEO of Harmony Biosciences?

Jeffrey M. Dayno has been CEO of Harmony Biosciences since 2024, according to LinkedIn profile.

What did Jeffrey M. Dayno do before Harmony Biosciences?

Jeffrey M. Dayno was Chief Medical Officer at Egalet Corporation from July 2014 until November 2017, according to LinkedIn profile.

How long has Jeffrey M. Dayno been CEO of Harmony Biosciences?

Jeffrey M. Dayno has been CEO of Harmony Biosciences for 2 years, since 2024.

Who else leads Harmony Biosciences?

Peter Anastasiou (Chief Operating Officer), Christian Ulrich (Executive Vice President, General Counsel & Corporate Secretary), Kumar Budur (Chief Medical and Scientific Officer), Adam Zaeske (Executive Vice President and Chief Commercial Officer), and 6 more. Source: Harmony Biosciences senior leadership page.

Reach Harmony Biosciences' decision makers

20+ leaders at vice president level and above, with verified work emails and phone numbers in Unify.

Methodology

The seat holder is identified in Unify's professional profile dataset, then confirmed against the company's published leadership page, its SEC filings, and Wikipedia before publication. Career and education rows carry the public document they were taken from. Leadership team membership follows the company's own leadership page; in-seat dates come from filings where available and otherwise from the profile record. Company figures are read from the Unify headcount page for the same company and are profile coverage measures, never company-reported workforce totals. The employee preview lists vice president and senior vice president level profiles by department. No personal contact details are published.

Identity confirmed against Harmony Biosciences on LinkedIn. Last verified: September 24, 2026.