Executive to Return Property. Executive agrees that upon # the termination of Executive’s employment with ​ and within three (3) business days thereof, whether by Executive or ​ for any reason (with or without cause), or # the written request of ​, Executive (or in the event of the death or disability of Executive, Executive’s heirs, successors, assigns and legal representatives) shall return to ​ any and all property of ​ regardless of the medium in which such property is stored or kept, including but not limited to all Secret Information, Confidential Information, notes, data, tapes, computers, lists, customer lists, names of customers, reference items, phones, documents, sketches, drawings, software, product samples, rolodex cards, forms, manuals, keys, pass or access cards and equipment, without retaining any copies or summaries of such property. Executive further agrees that to the extent Secret Information or Confidential Information are in electronic format and in Executive’s possession, custody or control, Executive will provide all such copies to ​ and will not keep copies in such format but, upon ​’s request, will confirm the permanent deletion or other destruction thereof.

Non-assignability by Executive. The obligations of Executive hereunder are personal and may not be assigned or delegated by him or transferred in any manner whatsoever, nor are such obligations subject to involuntary alienation, assignment or transfer, except by will or the laws of descent and distribution.

Delegation to Executive Officers. To the extent permitted by applicable law, the Board may delegate to one or more executive officers of [[Organization A:Organization]] the power to grant Awards and exercise such other powers under the Plan as the Board may determine, provided that the Board shall fix the maximum number of Awards to be granted and the maximum number of shares issuable to any one Participant pursuant to Awards granted by such executive officers.

Voluntary Resignation by Executive. Executive may voluntarily terminate her employment with the Company at any time with or without notice and with or without reason. Such voluntary termination by Executive shall include, without limitation, Executive’s decision not to renew this Agreement upon expiration of the Employment Period if the Company offers to renew this Agreement on economic terms and conditions at least equal to this Agreement and for a term at least equal to one year. In the event Executive voluntarily terminates her employment, Executive’s salary shall cease on the termination date and Executive will not be entitled to severance pay, pay in lieu of notice, or any other compensation other than payment of the Accrued Benefits.

Assignment by the Executive. This Agreement shall inure to the benefit of and be enforceable by each the Executive’s personal or legal representatives, executors, administrators, successors, heirs, distributees, devisees, and legatees. If the Executive dies while any amount would still be payable to him hereunder had he continued to live, all such amounts, unless otherwise provided herein, shall be paid in accordance with the terms of this Agreement to the Executive’s Beneficiary. If the Executive has not named a Beneficiary, then such amounts shall be paid to the Executive’s devisee, legatee, or other designee, or if there is no such designee, to the Executive’s estate.

Executive Resignation Effective Date. Effective as of midnight on October 1, 2014 (“Executive Resignation Effective Date”), you hereby resign as Senior Vice President, Advisor to the Chief Executive Officer and President of the Corporation.

Termination by the Executive. The Executive may terminate this Agreement and his employment by the Company:

Unless the Committee provides otherwise, # earned Executive Incentive Compensation shall be paid during the fiscal year of the Company immediately following the end of the applicable Performance Period, but unless the Committee determines otherwise, no later than 2½ months after the end of such Performance Period, and # such payment shall be made in cash (subject to any payroll tax withholding the Company may determine applies).

Disputes; Resolution by Executive Officers. The Parties recognize that disputes as to certain matters may from time to time arise during the Term that relate to decisions to be made by the Parties herein or to the Parties’ respective rights and/or obligations hereunder. Subject to [Section 2.2.4] and [Section 14.5.2], any disputes, controversies or claims that may arise between the Parties out of or in relation to or in connection with this Agreement shall be promptly presented to the Alliance Managers for resolution. If the Alliance Managers are unable to resolve such dispute within ​ Business Days after a matter has been presented to them, then upon the request of either Party by written notice, the Parties agree to meet and discuss in good faith a possible resolution thereof, which good faith efforts shall include at least one in-person meeting between the Executive Officers of each Party within ​ Business Days after receipt by the other Party of such written notice. If any such matter, other than a matter within the final decision-making authority of Regeneron, is not resolved within ​ Business Days following presentation to the Executive Officers, then either Party may invoke the provisions of [Section 14.5.2].

Non-Executive Chairman, Agreed Service Period. During the Agreed Service Period (as hereinafter defined), Warnke will continue as a member of the Board of Directors of the Company and will continue to hold the position of non-executive Chairman of the Board. For the purposes of this Agreement the term of Warnke's service as non-executive Chairman of the Board under this Agreement commenced with the effectiveness of his retirement as CEO on July 21, 2017 and, unless extended as provided in Section 2 below, will continue through the conclusion of the 2018 Annual Meeting (the "Agreed Service Period").