Power of Attorney Filing by Glenn Reicin

This filing documents a Power of Attorney granted by Glenn Reicin, Chief Financial Officer of Harmony Biosciences Holdings, Inc., to Jeffrey Dayno and Christian Ulrich. The attorneys-in-fact are authorized to execute and file on behalf of Mr. Reicin various securities filings, including Schedules 13D and 13G, and Forms 3, 4, and 5, as required under the Securities Exchange Act of 1934. This authorization allows the attorneys-in-fact to act on all transactions and holdings of securities issued by Harmony Biosciences Holdings, Inc. The Power of Attorney remains in effect until Mr. Reicin is no longer required to make such filings or until earlier revoked in writing. The document was signed on April 16, 2026.