Shares Subject to This Plan. Stock with respect to which Options are granted or issued under this Plan shall be authorized but unissued or reacquired Shares of the Company’s Common Stock. The aggregate number of Shares which may be issued under this Plan shall not exceed three million five hundred thousand (3,500,000) Shares, subject to adjustment under Section 9.

Terms of this Agreement; Publicity. The Parties agree that the terms of this Agreement shall be treated as Confidential Information of both Parties, and thus may be disclosed only as permitted by Section 6.1(c), with the exception, however, that, in order to comply with the stipulations in the [Sections 5.2 through 5.4] of this Agreement, Northern shall be allowed to disclose the terms of this Agreement to bone fide potential licensee of the Northern Patent Rights covering Other Compounds. Each Party agrees not to issue any press release or other public statement disclosing information relating to this Agreement or the transactions contemplated hereby or the terms hereof without the prior written consent of the other Party or as permitted by Section 6.1(c).

This Agreement. This Agreement has been duly authorized, executed and delivered by the Company.

Agreement Subject to the Plan. This Agreement is subject to the provisions of the Plan and shall be interpreted in accordance therewith. In the event that the

Grant. The Company hereby grants to the Grantee a Restricted Stock Grant (the "Grant") of ​ shares of Common Stock. The Grant will be subject to the terms and conditions of the Plan and this Agreement. The Grant constitutes the right, subject to the terms and conditions of the Plan and this Agreement, to distribution of the shares of Restricted Stock.

Plan Terms. All terms used in this Grant have the same meaning as given such terms in the Plan, a copy of which will be furnished upon request.

Grant of Restricted Stock Units. ​ hereby grants to the Participant the number Restricted Stock Units specified in the grant summary for no cash consideration. The Restricted Stock Units shall be subject to the terms and conditions in this Agreement and the Plan. The Participant acknowledges receipt of a copy of the Plan and the Plan Prospectus. Capitalized terms not defined in this Agreement shall have the meaning ascribed to such terms in the Plan. The grant date shall be as specified on the Participant’s individual grant summary (“Grant Date”) and subject to the following terms and conditions:

You have been granted an option to purchase Common Stock of the ​, subject to the terms and conditions of the Plan and this Option Agreement, as indicated on this “Notice of Grant of Stock Options and Option Agreement.”

Grant of Restricted Stock. The Company has granted to you, the Participant, the number of Shares specified in the Notice of Grant on the preceding page (the “Notice of Grant”), subject to the following terms and conditions. In consideration of such grant, you agree to be bound by the terms and conditions of this Agreement and of the Plan.

​ (the “Company”) has granted, pursuant to the ​ 2022 Equity Incentive Compensation Plan (the “Plan”), to the Participant named in the Notice of Grant of Nonqualified Stock Option (the “Grant Notice”) to which this Nonqualified Stock Option Agreement is attached (together with the Grant Notice, this “Agreement”) an Option to purchase the number of Common Shares set forth in the Grant Notice, subject to the terms and conditions set forth in this Agreement.

Grant Under Plan. This option is granted pursuant to and is governed by ​’s 2007 Stock Option and Incentive Plan (the “Plan”) and, unless the context otherwise requires, terms used herein shall have the same meaning as in the Plan.

Grant of Option. Subject to the relevant terms of the Plan and this Agreement, as of the Grant Date, the ​ has granted the ​ the number of Options set forth in the Award Letter.

Subject to the provisions of this Agreement and the provisions of the ​ 2004 Omnibus Incentive Plan (the “Plan”), the Company hereby grants to Grantee the number of restricted stock units shown above (the “Restricted Stock Units”) as of GRANT DATE (the “Grant Date”). Capitalized terms used and not defined in this Agreement have the meanings given to them in the Plan.

Plan Incorporated By Reference. Notwithstanding anything to the contrary anywhere else in this Option Agreement, this grant of an Option is subject to the terms, definitions, and provisions of the Plan, which is incorporated herein by reference.

Grant. Subject to the restrictions, limitations, terms and conditions specified in the Plan and this Agreement, effective as of the Award Date, Southwestern hereby grants the Participant ​ RSUs.

This Plan will be administered by the Committee; provided, however, that notwithstanding anything in this Plan to the contrary, the Board may grant awards under this Plan to non-employee Directors and administer this Plan with respect to such awards. The Committee may from time to time delegate all or any part of its authority under this Plan to a subcommittee thereof. To the extent of any such delegation, references in this Plan to the Committee will be deemed to be references to such subcommittee.

Purpose of this Plan. The purposes of the Plan are to strengthen the alignment of interests between those Employees of the Company and its Subsidiaries who are largely responsible for the success of the business as well as Non-employee Directors and the Company’s shareholders through ownership behavior and the increased ownership of shares of the Company’s common stock, and to encourage Plan Participants to remain in the employ of the Company and its Subsidiaries.