United States securities and exchange commission logo September 13, 2023 Sandip Kapadia Chief Financial Officer Harmony Biosciences Holdings, Inc. 630 W. Germantown Pike, Suite 215 Plymouth Meeting, PA 19462 Re: Harmony Biosciences Holdings, Inc. Form 10-K for the Fiscal Year Ended December 31, 2022 Filed February 21, 2023 File No. 001-39450 Dear Sandip Kapadia: We have completed our review of your filings. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Life Sciences