Separation Agreement by and between Jeffrey Dierks, Harmony Biosciences Holdings, Inc., Harmony Biosciences, LLC, and Harmony Biosciences Management, Inc., dated March 20, 2025
SEPARATION AGREEMENT
This Separation Agreement (this “Agreement”) is entered into by and between Jeffrey Dierks (“Executive”) and Harmony Biosciences Holdings, Inc., Harmony Biosciences, LLC and Harmony Biosciences Management, Inc. (together the “Company”), effective as of March 20, 2025 (the “Effective Date”).
1. | Transition and Separation. |
(a) Executive shall remain employed by the Company as the Company’s Chief Commercial Officer from the Effective Date until March 31, 2025 (the “Separation Date” and such period, the “Transition Period”) on the terms contained herein. The parties hereto acknowledge and agree that, effective as of the Effective Date, that certain Offer Letter, dated as of September 7, 2017, by and between Executive and the Company (the “Offer Letter”) shall terminate and the Company shall have no further obligations thereunder. Executive agrees that, prior to the Separation Date, Executive will continue to perform his duties, responsibilities and functions for the Company as would reasonably be expected to be usual and customary for Executive’s position, and will not engage in any other employment, occupation, consulting or other business activity, other than Executive’s current outside activities, including civic, charitable, and industry activities.
2. | Compensation. |
3. | Separation from Employment. |
Separation Date, Executive shall be deemed to have resigned from all offices and directorships held with the Company.

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of the Company and its affiliates (and all copies thereof) and all other Company or Company affiliate property that Executive has in his possession, custody or control. Such property includes, without limitation: (i) any materials of any kind that Executive knows contain or embody any proprietary or confidential information of the Company or an affiliate of the Company (and all reproductions thereof), (ii) portable electronic devices (including, but not limited to, tablet computers) unless otherwise mutually agreed, credit cards, entry cards, identification badges and keys, and (iii) any correspondence, drawings, manuals, letters, notes, notebooks, reports, programs, plans, proposals, financial documents, or any other documents concerning the customers, business plans, marketing strategies, products and/or processes of the Company or any of its affiliates and any information received from the Company or any of its affiliates regarding third parties. Notwithstanding the foregoing, Executive shall be permitted to retain his contacts, calendars and personal correspondence and any information reasonably needed for his personal tax return preparation, in each case, so long as such items do not contain confidential or proprietary information of the Company.

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agency or commission; provided, however, Executive releases and waives Executive’s right to receive damages or other relief in connection with any such matter to the maximum extent permitted by applicable law; (b) reporting to, communicating with, cooperating with, providing information to, or receiving any monetary reward or bounty from, any federal, state or local government agency, including, but not limited to, the EEOC, the U.S. Securities and Exchange Commission, the U.S. Commodity Futures Trading Commission, the U.S. National Labor Relations Board, or the U.S. Department of Justice, without notice to the Company; (c) testifying pursuant to a court order, subpoena, or written request from an administrative agency or the legislature, or making any truthful statements or disclosures required by law, regulation or legal process; (d) exercising any rights Executive may have under Section 7 of the U.S. National Labor Relations Act; and (e) discussing or disclosing information about unlawful acts in the workplace, such as harassment or discrimination based on a protected characteristic or any other conduct that Executive has reason to believe is unlawful. Further, Executive acknowledges that the Company has provided Executive notice of the immunity provisions of the U.S. Defend Trade Secrets Act of 2016, which state as follows: “(1) An individual shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of a trade secret that: (a) is made in confidence to a Federal, State, or local government official, either directly or indirectly, or to an attorney and solely for the purpose of reporting or investigating a suspected violation of law; or (b) is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal; and (2) an individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law may disclose a trade secret to the attorney of the individual and use the trade secret information in the court proceeding, if the individual (A) files any document containing the trade secret under seal, and (B) does not disclose a trade secret, except pursuant to court order.”
10. | Code Section 409A. |

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any other such actions. In no event shall the Company, its affiliates or any of their respective officers, directors or advisors be liable for any taxes, interest or penalties imposed under Section 409A or any corresponding provision of state or local law.

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drafter shall not apply to this Agreement. In the event that any language of this Agreement is found to be ambiguous, each party shall have an opportunity to present evidence as to the actual intent of the parties with respect to any such ambiguous language.

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Florida to all state law claims and federal law to any federal law claims, that discovery shall be conducted in accordance with the JAMS Rules or as otherwise permitted by law as determined by the arbitrator. The arbitrator’s award shall consist of a written statement as to the disposition of each claim and the relief, if any, awarded on each claim. The Company and Executive understand that the right to appeal or to seek modification of any ruling or award by the arbitrator is limited under state and federal law. Any award rendered by the arbitrator will be final and binding, and judgment may be entered on it in any court of competent jurisdiction in Philadelphia, Pennsylvania at the time the award is rendered or as otherwise provided by law. Nothing contained herein shall restrict either party from seeking temporary injunctive relief in a court of law. The arbitrators are not empowered to award damages in excess of compensatory damages and each party irrevocably waives any damages in excess of compensatory damages. Judgment upon any arbitration award may be entered into any court having jurisdiction thereof and the parties consent to the jurisdiction of any court of competent jurisdiction located in the Commonwealth of Pennsylvania.
If to Executive: at Executive’s most recent address on the records of the Company
If to the Company:
Harmony Biosciences Management, Inc. 630 W. Germantown Pike, Suite 215 Plymouth Meeting, PA 19462
Attention: General Counsel & Corporate Secretary
All notices, requests and other communications shall be deemed given on the date of actual receipt or delivery as evidenced by written receipt, acknowledgement or other evidence of actual receipt or delivery to the address. In case of service by telecopy, a copy of such notice shall be personally delivered or sent by registered or certified mail, in the manner set forth above, within three business days thereafter. Any party hereto may from time to time by notice in writing served as set forth above designate a different address or a different or additional person to which all such notices or communications thereafter are to be given.
[Signature page follows]

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Docusign Envelope ID: 23412DD8-40C5-41CA-8A6E-3398ED420437

IN WITNESS WHEREOF, Executive has hereunto set Executive’s hand and the Company has caused these presents to be executed in its name on its behalf, all as of the day and year set forth below.
Dated: 3/17/2025 /s/ Jeffrey Dierks
Jeffrey Dierks
Dated:
03/20/2025
/s/ Jeffrey Dayno, MD

Harmony Biosciences Holdings, Inc. Name: Jeffrey Dayno, M.D.
Title: President & Chief Executive Officer
Dated:

03/20/2025
/s/ Jeffrey Dayno, MD
Harmony Biosciences, LLC Name: Jeffrey Dayno, M.D.
Title: President & Chief Executive Officer

Dated:
03/20/2025
/s/ Jeffrey Dayno, MD
Harmony Biosciences Management, Inc. Name: Jeffrey Dayno, M.D.
Title: President & Chief Executive Officer

[Signature page to Separation Agreement]