Form of RSU Grant Agreement 2015 Plan (Director Level Employees)

Unless otherwise defined herein, the terms defined in the DexCom, Inc. (the “Company”) 2015 Equity Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Restricted Stock Unit Award (the “Notice”).

You (“Participant”) have been granted an award of Restricted Stock Units (“RSUs”) under the Plan subject to the terms and conditions of the Plan, this Notice and the attached Award Agreement (Restricted Stock Units) (hereinafter “RSU Agreement”).

Expiration Date:    The date on which settlement of all RSUs granted hereunder

occurs, with earlier expiration upon the Termination Date

“Cause” means termination of the Participant’s Service on the basis of the Participant’s conviction (or a plea of nolo contendere) of

fraud, misappropriation, embezzlement or any other act or acts of dishonesty constituting a felony and resulting or intended to result directly or indirectly in a substantial gain or personal enrichment to the Participant at the expense of the Company or any Subsidiary.

“Corporate Transaction” means the occurrence of any of the following events: (i) any “person” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) becomes the “beneficial owner” (as defined in Rule 13d-3 of the Exchange Act), directly or indirectly, of securities of the Company representing more than fifty percent (50%) of the total voting power represented by the Company’s then-outstanding voting securities; provided, however, that for purposes of this subclause (i) the acquisition of additional securities by any one Person who is considered to own more than fifty percent (50%) of the total voting power of the securities of the Company will not be considered a Corporate Transaction; (ii) the consummation of the sale, transfer or disposition by the Company of all or substantially all of the Company’s assets; (iii) the consummation of a merger or consolidation of the Company with any other corporation, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity or its parent) more than fifty percent (50%) of the total voting power represented by the voting securities of the Company or such surviving entity or its parent outstanding immediately after such merger or consolidation; (iv) any other transaction which qualifies as a “corporate transaction” under Section 424(a) of the Code wherein the stockholders of the Company give up all of their equity interest in the Company (except for the acquisition, sale or transfer of all or substantially all of the outstanding shares of the Company) or (v) a change in the effective control of the Company that occurs on the date that a majority of members of the Board is replaced during any twelve (12) month period by members of the Board whose appointment or election is not endorsed by a majority of the members of the Board prior to the date of the appointment or election. For purpose of this subclause (v), if any Person is considered to be in effective control of the Company, the acquisition of additional control of the Company by the same Person will not be considered a Corporate Transaction. For purposes of this definition, Persons will be considered to be acting as a group if they are owners of a corporation that enters into a merger, consolidation, purchase or acquisition of stock, or similar business transaction with the Company. Notwithstanding the foregoing, to the extent that any amount constituting deferred compensation (as defined in Section 409A of the Code) would become payable under this Plan by reason of a Corporate Transaction, such amount shall become payable only if the event constituting a Corporate Transaction would also qualify as a change in ownership or effective control of the Company or a change in the ownership of a substantial portion of the assets of the Company,

each as defined within the meaning of Code Section 409A, as it has been and may be amended from time to time, and any proposed or final Treasury Regulations and IRS guidance that has been promulgated or may be promulgated thereunder from time to time.

Notwithstanding the foregoing, a Corporate Transaction shall not be deemed to result from any transaction precipitated by the Company’s insolvency, appointment of a conservator, or determination by a regulatory agency that the Company is insolvent, nor from any transaction the sole purpose of which is to change the state of the Company’s incorporation or to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such transaction.

“Constructively Terminated” means that you voluntarily terminate your employment with the Company because (i) your title and responsibilities or your annual salary and bonus potential are materially reduced or (ii) you worked at the Company’s headquarters immediately prior to the Corporate Transaction, and the headquarters of the Company is subsequently moved more than 50 miles from its present location within twelve (12) months of the Corporate Transaction.

You understand that your employment or consulting relationship or service with the Company is for an unspecified duration, can be terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the RSU Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting of the RSUs pursuant to this Notice is earned only by continuing service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject to the terms and conditions of both the RSU Agreement and the Plan, both of which are incorporated herein by reference. Participant has read both the RSU Agreement and the Plan.

Unless otherwise defined herein, the terms defined in the DexCom, Inc. (the “Company”) 2015 Equity Incentive Plan (the “Plan”) shall have the same defined meanings in this Award Agreement (Restricted Stock Units) (the “Agreement”).

You have been granted Restricted Stock Units (“RSUs”) subject to the terms, restrictions and conditions of the Plan, the Notice of Restricted Stock Unit Award (the “Notice”) and this Agreement.

1.Settlement. Settlement of RSUs shall be made within the earlier of (i) 90 days following the applicable date of vesting under the vesting schedule or (ii) March 15 of the year following the year of vesting as set forth in the Notice. Settlement of RSUs shall be in Shares.

2.    Withholding and Net Issuance of the Shares. When, under applicable tax laws, Participant incurs tax liability in connection with the vesting or settlement of any RSUs or issuance of Shares in connection therewith that is subject to tax withholding by the Company, the Company may satisfy the minimum tax withholding obligation on behalf of the Participant by either (a) withholding from the Shares to be issued, the number of Shares having a fair market value (determined on the date that the amount of tax to be withheld is determined) equal to the amount required to be withheld for income and employment taxes, or (b) arranging to have sold on Participant’s behalf through such means as the Company may determine in its sole discretion (whether through a broker or otherwise) a sufficient number of Shares that is equal to the amount required to be withheld. The Company shall arrange to sell or withhold a whole number of shares to satisfy the minimum tax withholding obligation, and to the extent that any tax obligation balance remains, such amount shall be withheld from your following payroll cycle.

3.    No Stockholder Rights. Unless and until such time as Shares are issued in settlement of vested RSUs, Participant shall have no ownership of the Shares allocated to the RSUs and shall have no right dividends or to vote such Shares.

4.    Dividend Equivalents. Dividends, if any (whether in cash or Shares), shall not be credited to Participant.

5.    No Transfer. The RSUs and any interest therein shall not be sold, assigned, transferred, pledged, hypothecated, or otherwise disposed of.

6.    Termination. If Participant’s service Terminates for any reason, all unvested RSUs shall be forfeited to the Company forthwith, and all rights of Participant to such RSUs shall immediately terminate. In case of any dispute as to whether Termination has occurred, the Committee shall have sole discretion to determine whether such Termination has occurred and the effective date of such Termination.

7.    U.S. Tax Consequences. Participant acknowledges that there will be tax consequences upon settlement of the RSUs or disposition of the Shares, if any, received in connection therewith, and Participant should consult a tax adviser regarding Participant’s tax obligations prior to such settlement or disposition. Upon vesting of the RSU, Participant will include in income the fair market value of the Shares subject to the RSU. The included amount will be treated as ordinary income by Participant and will be subject to withholding by the Company when required by applicable law. Upon disposition of the Shares, any subsequent increase or decrease in value will be treated as short-term or long-term capital gain or loss, depending on whether the Shares are held for more than one year from the date of settlement. Further, an RSU may be considered a deferral of compensation that may be subject to Section 409A of the Code. Section 409A of the Code imposes special rules to the timing of making and effecting certain amendments of this RSU with respect to distribution of any deferred compensation. You should consult your personal tax advisor for more information on the actual and potential tax consequences of this RSU.

8.    Acknowledgement. The Company and Participant agree that the RSUs are granted under and governed by the Notice, this Agreement and the provisions of the Plan. Participant: (i) acknowledges receipt of a copy of the Plan and the Plan prospectus, (ii) represents that Participant has carefully read and is familiar with their provisions, and (iii) hereby accepts the RSUs subject to all of the terms and conditions set forth herein and those set forth in the Plan and the Notice.

9.    Entire Agreement; Enforcement of Rights. This Agreement, the Plan and the Notice constitute the entire agreement and understanding of the parties relating to the subject matter herein and supersede all prior discussions between them. Any prior agreements, commitments or negotiations concerning the purchase of the Shares hereunder are superseded. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing and signed by the parties to this Agreement. The failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party.

10.    Compliance with Laws and Regulations. The issuance of Shares will be subject to and conditioned upon compliance by the Company and Participant with all applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the Company’s Common Stock may be listed or quoted at the time of such issuance or transfer.

11.    Governing Law; Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (i) such provision shall be excluded from this Agreement, (ii) the balance of this Agreement shall be interpreted as if such provision were so excluded and (iii) the balance of this Agreement shall be enforceable in accordance with its terms. This Agreement and all acts and transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law.

11.    No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any manner whatsoever the right or power of the Company, or a Parent or Subsidiary of the Company, to terminate Participant^’s service, for any reason, with or without cause.

By your signature and the signature of the Company’s representative on the Notice, Participant and the Company agree that this RSU is granted under and governed by the terms and conditions of the Plan, the Notice and this Agreement. Participant has reviewed the Plan, the Notice and this Agreement in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Agreement, and fully understands all provisions of the Plan, the Notice and this Agreement. Participant hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Committee upon any questions relating to the Plan, the Notice and this Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence address.