LANTHEUS MI HOLDINGS, INC. 2013 EQUITY INCENTIVE PLAN OPTION GRANT AWARD AGREEMENT

connection with the exercise of my Option, subject to satisfaction of any and all withholding taxes in any other manner consistent with the Award Agreement and the Plan, or I have otherwise satisfied such requirements.

4.     Rights as Shareholder. While the Company shall endeavor to process this notice in a timely manner, I acknowledge that until the issuance of the Optioned Shares (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company) and my satisfaction of any other conditions imposed by the Board pursuant to the Plan or as set forth in the Award Agreement, no right to vote or receive dividends or any other rights as a stockholder shall exist with respect to such shares, notwithstanding the exercise of my Option. No adjustment shall be made for a dividend or other right for which the record date is prior to the date of issuance of the Optioned Shares.

5.     Interpretation. Any dispute regarding the interpretation of this notice shall be submitted promptly by me or by the Company to the Board. The resolution of such a dispute by the Committee shall be final and binding on all parties.

Very truly yours,

EXHIBIT B

Investment Representations and Warranties

The Grantee hereby represents and warrants to the Company that:

1.                                      The Option and Incentive Shares received by him or her will be held by him or her for investment only for his or her own account, not as a nominee or agent, and not with a view to the sale or distribution of any part thereof in violation of applicable U.S. federal or state or foreign securities laws.  The Grantee has no current intention of selling, granting participation in or otherwise distributing the Option or Incentive Shares in violation of applicable U.S. federal or state or foreign securities laws.  The Grantee does not have any contract, undertaking, agreement or arrangement with any person or entity to sell, transfer or grant participation to such person or entity, or to any third person or entity, with respect to any of the Option or Incentive Shares, in each case, in violation of applicable U.S. federal or state or foreign securities laws.

2.                                      The Grantee understands that the issuance of the Option and Incentive Shares has not been registered under the Securities Act or any applicable U.S. state or foreign securities laws, and that the Option and Incentive Shares are being issued in reliance on an exemption from registration, which exemption depends upon, among other things, the bona fide nature of the investment intent and the accuracy of the Grantee’s representations as expressed herein.

3.                                      The Grantee has such knowledge and experience in financial and business matters as to be capable of evaluating the merits and risks of his or her owning the Option and Incentive Shares.  The Grantee is a sophisticated investor, has relied upon independent investigations made by the Grantee and, to the extent believed by the Grantee to be appropriate, the Grantee’s representatives, including the Grantee’s own professional, tax and other advisors, and is making an independent decision to invest in the Option and Incentive Shares.  The Grantee has been furnished with such documents, materials and information that the Grantee deems necessary or appropriate for evaluating an investment in the Company, and the Grantee has read carefully such documents, materials and information and understands and has evaluated the types of risks involved with holding the Option and Incentive Shares.  The Grantee has not relied upon any representations or other information (whether oral or written) from the Company or its shareholders, directors, officers or affiliates, or from any other person or entity, in connection with his or her investment in the Option and Incentive Shares.  The Grantee acknowledges that the Company has not given any assurances with respect to the tax consequences of the ownership and disposition of the Option and Incentive Shares.

4.                                      The Grantee has had, prior to his or her being granted the Option and Incentive Shares, the opportunity to ask questions of, and receive answers from, the Company concerning the terms and conditions of the transactions contemplated by the Agreement and the Grantee’s holding of the Option and Incentive Shares and to obtain additional information necessary to verify the accuracy of any information furnished to him or her

or to which he or she had access.  The Grantee confirms that he or she has satisfied himself or herself with respect to any of the foregoing matters.

5.                                      The Grantee acknowledges that he or she has had the opportunity to seek legal advice and all documents, materials and information that he or she has requested or read relating to holding the Option or Incentive Shares and confirms that he or she has satisfied himself or herself with respect to any of the foregoing matters.

6.                                      The Grantee understands that no U.S. federal or state or foreign agency has passed upon the Option or Incentive Shares or upon the Company, or upon the accuracy, validity or completeness of any documentation provided to the Grantee in connection with the transactions contemplated by the Agreement, nor has any such agency made any finding or determination as to holding the Option or Incentive Shares.

7.                                      The Grantee understands that there are substantial restrictions on the transferability of the Option and Incentive Shares and that on the date of the Agreement and for an indefinite period thereafter there will be no public market for the Option or Incentive Shares and, accordingly, it may not be possible for the Grantee to liquidate his or her investment in case of emergency, if at all.  In addition, the Grantee understands that the Agreement and Employee Shareholders’ Agreement contain substantial restrictions on the transferability of the Option and Incentive Shares and provide that, in the event that the conditions relating to the transfer of the Option or any Incentive Shares in such document has not been satisfied, the holder shall not transfer the Option or any such Incentive Shares, and unless otherwise specified the Company will not recognize the transfer of the Option or any such Incentive Shares on its books and records or issue any share certificates representing the Option or any such Incentive Shares, and any purported transfer not in accordance with the terms of the Agreement or the Employee Shareholders’ Agreement shall be void.  As such, Grantee understands that: a restrictive legend or legends in a form to be set forth in the Agreement and the Employee Shareholders’ Agreement will be placed on the certificates representing the Option and Incentive Shares; a notation will be made in the appropriate records of the Company indicating that each of the Option and Incentive Shares are subject to restrictions on transfer and, if the Company should at some time in the future engage the services of a securities transfer agent, appropriate stop-transfer instructions will be issued to such transfer agent with respect to the Option and Incentive Shares; and the Grantee will sell, transfer or otherwise dispose of the Option or Incentive Shares only in a manner consistent with its representations set forth herein and then only in accordance with the Agreement and the Employee Shareholders’ Agreement.

8.                                      The Grantee understands that (i) neither the Option nor the Incentive Shares may be sold, transferred or otherwise disposed of without registration under the Securities Act or an exemption therefrom, (ii) the Option and Incentive Shares have not been registered under the Securities Act; (iii) the Option and Incentive Shares must be held indefinitely and he or she must continue to bear the economic risk of holding the Option and Incentive Shares unless such Option and Incentive Shares are subsequently registered under the Securities Act or an exemption from such registration is available; (iv) the Grantee is prepared to bear the economic risk of holding the Option and Incentive Shares for an

indefinite period of time; (v) it is not anticipated that there will be any public market for the Option or Incentive Shares; (vi) the Option and Incentive Shares are characterized as “restricted securities” under the U.S. federal securities laws; and (vii) the Option and Incentive Shares may not be sold, transferred or otherwise disposed of except in compliance with federal, state and local law.

9.                                      The Grantee understands that an investment in the Option or Incentive Shares is not recommended for investors who have any need for a current return on this investment or who cannot bear the risk of losing their entire investment.  In that regard, the Grantee understands that his or her holding the Option and Incentive Shares involves a high degree of risk of loss.  The Grantee acknowledges that: (i) he or she has adequate means of providing for his or her current needs and possible personal contingencies and has no need for liquidity in this investment; (ii) his or her commitment to investments which are not readily marketable is not disproportionate to his or her net worth; and (iii) his or her holding the Option and Incentive Shares will not cause his or her overall financial commitments to become excessive.

10.                               The Grantee has completed and signed the Accredited Investor Certificate attached hereto as Schedule 1.

Schedule 1 to Exhibit B

Accredited Investor Certificate

I, [Name of Grantee],  hereby certify that, as of the date hereof, I fall within the following categor(y)(ies):  (Capitalized terms used herein have the meanings ascribed to them in the Option Grant Award Agreement, dated [     ], 201[   ], among Lantheus MI Holdings Inc., and the undersigned.)

(check all that apply)

·              A director or executive officer* of Lantheus MI Holdings, Inc.

*An executive officer means the president, any vice president in charge of a principal business unit, division or function (such as sales, administration or finance), any other officer who performs a policy making function, or any other person who performs similar policy making functions for the company concerned.  Executive officers of subsidiaries may be deemed executive officers of a company if they perform such policy making function for the company concerned.

·                                         A person whose individual net worth, or joint net worth with my spouse, at the time of purchasing the Restricted Shares, exceeds $1,000,000.

·                                         A person who had an individual income in excess of $200,000 in each of the two most recent years or joint income with my spouse in excess of $300,000 in each of those years and have a reasonable expectation of reaching the same income level in the current year.

Dated:               , 201[   ]

EXHIBIT C

Share Power

IRREVOCABLE STOCK POWERS

LANTHEUS MI HOLDINGS, INC.

FOR VALUE RECEIVED, [Name of Grantee] does hereby sell, assign and transfer unto                                                                            Shares of Common Stock of Lantheus MI Holdings, Inc., par value $0.001, represented by Certificate No.        herewith and does hereby irrevocably constitute and appoint                                              attorney to transfer the said stock on the books of the within named corporation with full power of substitution in the premises.

EXHIBIT D

Joinder Agreement

JOINDER TO EMPLOYEE SHAREHOLDERS’ AGREEMENT

This Joinder Agreement (this “Joinder Agreement”) is made as of the date written below by the undersigned (the “Joining Party”) in accordance with the Employee Shareholders’ Agreement dated as of May 8, 2008 (as the same shall be amended, supplemented or modified from time to time, the “Employee Shareholders’ Agreement”) among (i) Lantheus MI Holdings, Inc., a Delaware corporation, (ii) Avista Capital Partners, LP, Avista Capital Partners (Offshore), LP, ACP-Lantern Co-Invest LLC, and (iii) certain other Persons party thereto.  Capitalized terms used, but not defined, herein shall have the meaning ascribed to such terms in the Employee Shareholders’ Agreement.

The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining Party shall be deemed to be a party to the Employee Shareholders’ Agreement as of the date hereof.  The Joining Party (i) shall have all of the rights and obligations of an “Employee Shareholder” under the Employee Shareholders’ Agreement and (ii) shall be deemed an “Employee Shareholder” and be subject to all of the terms, conditions, limitations and restrictions applicable thereto under the Employee Shareholders’ Agreement, in each case, as if it had executed the Employee Shareholders’ Agreement.  The Joining Party hereby ratifies, as of the date hereof, and agrees to be bound by, all of the terms, provisions and conditions contained in the Employee Shareholders’ Agreement.

IN WITNESS WHEREOF, the undersigned has executed this Joinder Agreement as of the date written below.

Date:                              , 201[   ]

EXHIBIT E

Irrevocable Proxy

IRREVOCABLE PROXY

I, [                           ], do hereby irrevocably constitute and appoint the Chief Executive Officer of Lantheus MI Holdings, Inc., a Delaware corporation (“Holdings” or the “Company”), as the same may be duly appointed from time to time by the Board of Directors of the Company, with full power of substitution and resubstitution, as my true and lawful proxy to act in my name, place and stead and on my behalf to do and execute all or any of the following specific acts, deeds and things:

(1)           To vote (i) my [                   ] Common Stock of Holdings plus any additional Common Stock of Holdings which I may acquire by exercising any option to purchase further additional Common Stock, (ii) my [                ] Preferred Stock of Holdings to the extent that such Preferred Stock is entitled to vote at any time, and (iii) any and all additional equity interests in the Company in which I may at any time have an interest (the “Stock”) of Holdings, represented by certificate number [     ] (or any other certificate(s) issued in replacement or in lieu thereof) at any meeting of the shareholders (whether annual, regular or special meetings and whether or not an adjourned meeting) of Holdings, or any express written consent or dissent in any action taken in lieu of such a meeting and to exercise, do or perform any act, right, power, duty, or obligation that I now have or may acquire the legal right, power or capacity to exercise, do, or perform in connection with, arising out of, or relating to the exercise of voting the Stock.

(2)           To sign, endorse and execute in my name, all company consents, waivers of notice, voting of stock and the like, with respect to any matter properly the subject of action by a shareholder of Holdings, including, but not limited to, the removal and replacement of managers and officers, or the liquidation, dissolution, merger or sale of Holdings or any of its assets (including, without limitation, sale of the Stock).

Notwithstanding the foregoing, my proxy shall not be used to take any action that would intentionally expose me to personal liability, including, but not limited to, liability for withholding taxes, sales taxes, franchise taxes and/or other debts and expenses of the Company or expose me to investigation or prosecution, nor will it prevent me from receiving notice or other information that I am entitled to receive under the Employee Shareholder Agreement, the Amended and Restated Charter of Holdings or applicable law as a result of my ownership of the Stock.

Notwithstanding the foregoing, my proxy shall not be used to sell the Stock (except for a sale of the Stock pursuant to Article 4 (Drag-Along Rights; Put Right and Call Right) or Section 3.03(b) (transfers following the First Public Offering) of the Employee Shareholder Agreement dated May 8, 2008 (the “Employee Shareholder Agreement”)).

Proxy Coupled With an Interest.  This irrevocable proxy is given in consideration of the agreements and covenants of Holdings and the parties in connection with the transactions

contemplated by the Employee Shareholder Agreement and, as such, is coupled with an interest and shall be irrevocable unless and until the Employee Shareholder Agreement is terminated.

Revocation of Prior Irrevocable Proxy.  This irrevocable proxy shall revoke any other power of attorney or proxy granted by me with respect to the Stock, and I shall not grant any subsequent powers of attorney or proxies with respect to the Stock as long as this irrevocable proxy remains in full force and effect.

Durable Proxy.  This irrevocable proxy shall not terminate on my physical or mental disability, or incapacity.

Ratification.  I hereby ratify and confirm all that my proxy, or his successors, shall lawfully do or cause to be done by virtue of this irrevocable proxy and the rights and power granted herein.

Effect of My Death.  My death shall not revoke or terminate this agency as to the proxy, agent or other person who, without actual knowledge of my death, acts in good faith under this irrevocable proxy.  Any action so taken, unless otherwise invalid or unenforceable, shall be binding upon me and my heirs, devisees, and personal representatives.

Governing Law.  THIS IRREVOCABLE PROXY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF DELAWARE, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS, AND ANY SUIT, ACTION OR PROCEEDING ARISIGN OUT OF OR RELATING TO THIS IRREVOCABLE PROXY SHALL BE BROUGHT, HEARD AND DETERMINED EXCLUSIVELY IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE (PROVIDED HOWEVER, THAT IF SUBJECT MATTER JURISDICTION IS UNAVAILABLE IN THAT COURT, THEN ALL SUCH CLAIMS SHALL BE TRANSFERRED TO OR OTHERWISE BROUGHT, HEARD AND DETERMINED EXCLUSIVELY IN ANY OTHER STATE OR FEDERAL COURT SITTING IN WILMINGTON, DELAWARE).

I sign my name to this Irrevocable Proxy on the        of                        20[·]..

SCHEDULE A

GROUP EBITDA TARGETS

Group EBITDA for the Applicable Fiscal Year ($)

(a)                                 Adjustments to Group EBITDA.

(i)                                                        To the extent that during any Fiscal Year, the Company or any of its Subsidiaries acquires any business (whether a division of a business, line of business, business unit or otherwise), the assets of any business or any product (an “Acquired Business”):