Exhibit 10.50
TRANSITION AGREEMENT
     TRANSITION AGREEMENT (this “Agreement”) made and entered into by and
between Biogen Idec Inc. (the “Company”) and James C. Mullen (the “Executive”),
dated as of January 4, 2010.
     WHEREAS, the Executive has been employed as President and Chief Executive
Officer of the Company and has served as a member of the Company’s Board of
Directors pursuant to a written agreement originally dated June 20,2003 (as
amended, the “Employment Agreement”); and
     WHEREAS, the Executive and the Company have mutually determined that it is
an appropriate time for the Company to transition to a new President and Chief
Executive Officer and therefore wish to set forth clearly the terms of such
transition;
     NOW, THEREFORE, in consideration of the foregoing premises and the mutual
promises, terms, provisions and conditions set forth in this Agreement, the
parties hereby agree as follows:

1.   Dates.

     (a) For purposes of this Agreement, the “Transition Date” shall be such
date designated by the Board of Directors of the Company (the “Board), by notice
to the Executive.
     (b) For purposes of this Agreement, the “Separation Date” shall be June 8,
2010 or such earlier date as the Executive’s employment with the Company
terminates due to Executive’s death or disability or termination by the Company
for any reason. If the Transition Date does not occur prior to the Separation
Date, then references herein to the Transition Date shall be deemed to be
references to the Separation Date, where the context so requires.

2.   Resignation. The Executive hereby resigns (a) his position as President and
Chief Executive Officer of the Company, effective as of the Transition Date and
(b) his employment with the Company, effective as of the Separation Date. The
Executive further agrees that he will resign from the Board upon the formal
request of the Board at any time following the Transition Date. The Executive
shall not stand for reelection to the Board.   3.   Continuation Period. The
period from the date hereof through the Transition Date shall be referred to as
the “Continuation Period”. During the Continuation Period, the Executive shall
continue to serve as the Company’s President and Chief Executive Officer and,
until the end of his current Board term, as a member of the Board, and shall
have such duties and responsibilities as provided in Section 2 of the Employment
Agreement. Notwithstanding the foregoing, it is understood and agreed that
following the public disclosure by the Company of the existence of this
Agreement, the Executive will be allowed (i) to devote

 

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    working time to career-related matters, including communicating with
prospective employers and/or boards regarding potential future opportunities,
provided doing so does not materially interfere with his performance of his
duties and responsibilities hereunder and (ii) to join the board of directors or
other governing body of one or more other entities so long as the Executive’s
membership thereon does not violate Section 6 of the Employment Agreement.

4.   Transition Period.

     (a) The period (if any) from the Transition Date through the Separation
Date shall be referred to as the “Transition Period.” During the Transition
Period, the Executive shall continue as a Company employee as Special Advisor to
the Company.
     (b) During the Transition Period, the Executive may be assigned such
projects and tasks as are reasonably related to, and consistent with his former
position as, President and Chief Executive Officer of the Company.

5.   Compensation and Benefits Through the Separation Date.

     (a) From the date hereof through June 8, 2010, the Company shall continue
to pay the Executive his base salary at the rate in effect immediately prior to
the date hereof at the rate of $1,200,000 per year (the “Base Salary”), payable
in accordance with the normal payroll practices of the Company.
     (b) From the date hereof through June 8, 2010, the Executive shall be
entitled to continue to participate in any and all employee benefit plans of the
Company in which he was participating immediately prior to the date hereof and,
as of the Separation Date, (i) all matching credits for contributions with
respect to periods through June 8, 2010 will be credited to the Executive’s
accounts (notwithstanding the ordinary crediting schedule applicable to such
plans) and (ii) all such benefits (including matching credits) shall be fully
vested. Exhibit A sets forth a list of certain of the Executive’s benefits as of
December 28, 2009.
     (c) The Executive shall be paid an annual bonus with respect to 2009 in an
amount not less than the product of his 2009 annual bonus target (125% of base
salary) and the corporate multiplier (to be determined by the Compensation
Committee of the Board based on performance metrics previously established in
2009 consistent with the determination made for the Company’s other executive
officers). Such annual bonus will be paid at the time bonus awards with respect
to 2009 are paid to the Company’s other executive officers, but prior to March
15, 2010.
     (d) Subject to the provisions of Section 11(c), no later than the later of
June 8, 2010 and ten business days following the Separation Date, the Executive
shall be paid a pro-rata bonus with respect to 2010 based on his Base Salary and
an annual bonus target of 125% of the Base Salary, pro-rated for the portion of
calendar year 2010 that precedes June 8, 2010.

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     (e) The Company shall pay or reimburse the Executive for all reasonable and
necessary business expenses incurred or paid by the Executive in the performance
of his duties and responsibilities, in accordance with the applicable
reimbursement policy of the Company.
     (f) Until the Transition Date, the Executive shall retain his current
office location in the Company’s offices and shall maintain the same level of
administrative support and services as are being provided as of the date hereof.
Between the Transition Date and the Separation Date, the Executive shall be
provided an office and a level of administrative support and services comparable
to the level being provided as of the date hereof.

6.   Stock Options.

     (a) Attached hereto as Exhibit B is a schedule of all outstanding stock
options previously granted (and not yet exercised) to the Executive by the
Company or a predecessor as of December 28, 2009 (the “Stock Options”). From the
date hereof through the Separation Date, the Stock Options shall continue to
vest in accordance with the governing terms of the applicable stock plan and/or
the option agreement or other award documentation governing such Stock Options.
     (b) Notwithstanding any provision of the Employment Agreement or any stock
plan or agreement evidencing a Stock Option, upon the Separation Date (and
immediately prior to the termination of the Executive’s employment) each Stock
Option shall, to the extent not theretofore vested, become fully vested and
exercisable.
     (c) Following the Separation Date, the Executive shall be entitled to
exercise each Stock Option, in whole or in part. until the earlier of (i) three
years following June 8, 2010 and (ii) the expiration of the maximum term of such
Stock Option. The Company shall permit the Executive to elect to net-exercise
all such Stock Options (for both exercise prices and taxes) throughout the
above-described period. The Company shall also take such actions as are
necessary to permit the Executive unrestricted resale of shares acquired
pursuant to such Stock Options and the Stock Awards described in Section 7
hereof (including maintaining the effectiveness of a Form S-8 or similar form
and a resale prospectus with respect to such equity awards).

7.   Restricted Stock. Attached hereto as Exhibit C is a schedule of all
outstanding and unvested restricted stock unit awards previously granted to the
Executive by the Company or a predecessor as of December 28, 2009 (the “Stock
Awards”), provided, however, that the final number of shares available pursuant
to the Performance Based Restricted Stock Unit Award identified in Exhibit C
(“PBRSUs”) shall be determined (and increased or decreased, as the case may be)
by the attainment of the applicable performance goals. From the date hereof
through the Separation Date, the Stock Awards shall continue to vest in
accordance with the governing terms of the applicable stock plan or award
documentation governing such Stock Awards. Notwithstanding any provision of the

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    Employment Agreement or any stock plan or agreement evidencing a Stock
Award, as of the Separation Date, each Stock Award (including “Earned PBRSUs” as
determined in accordance with the terms of the PBRSU grant) shall, to the extent
not theretofore vested, become fully vested and the Company shall deliver to the
Executive shares in respect of each such award.

8.   Final Salary and Paid Time Off. On the first regular Company payday
immediately following the Separation Date, the Executive shall receive payment
with respect to any accrued paid time off rights, including but not limited to,
pay for the vacation the Executive had earned and not used as of the Separation
Date determined in accordance with Company policy and as reflected on the books
of the Company.

9.   Severance Benefits. In the event that prior to June 8, 2010, the Company
has publicly announced a transaction which would constitute a Change in Control
(as defined in the Employment Agreement), then the Company shall pay to the
Executive the cash severance payment described in Section 5(a) of the Employment
Agreement only upon the consummation of such Change in Control (and otherwise in
accordance with the provisions of the Employment Agreement). No payment will be
due to the Executive if such transaction is not consummated.

10.   Non-Competition. The Executive affirms that those provisions of Section 6
of the Employment Agreement shall continue to apply in accordance with their
terms for the one year period following the Separation Date.

11.   Mutual Release of Claims.

     (a) In consideration of the Company’s promises in this Agreement, Executive
hereby knowingly and voluntarily releases and forever discharges the Company and
each of its parents, subsidiaries and affiliates, together with all of their
respective current and former principals, officers, directors, agents,
representatives and employees, and each of their successors and assigns
(collectively, the “Company Releasees”), from any and all debts, demands,
actions, causes of actions, accounts, covenants, contracts, agreements, claims,
damages, omissions, promises, and any and all claims and liabilities whatsoever,
of every name and nature, known or unknown, suspected or unsuspected, both in
law and equity (“Claims”), which Executive ever had, now has, or may hereafter
claim to have against the Company Releasees by reason of any matter, cause or
thing whatsoever arising from the beginning of time to the time Executive signs
this Agreement (the “General Release”). This General Release of Claims shall,
except as set forth below, apply to any Claim of any type, including, without
limitation and by way of example only, any and all Claims of any type that
Executive may have arising under the common law, under Title VII of the Civil
Rights Act of 1964, the Civil Rights Act of 1991, the Age Discrimination in
Employment Act of 1967, the Older Workers Benefit Protection Act, the Americans
With Disabilities Act of 1967, the Family and Medical Leave Act of 1993, the
Employee Retirement Income Security Act of 1974, the Sarbanes-Oxley Act of 2002,
the Massachusetts Fair Practices Act, Mass. Gen. L. ch. 151B and Mass. Gen. L.
ch. 149, §§ 24A-24J, the Massachusetts Civil Rights Act, and the Massachusetts
Equal Rights Law,

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each as amended, and any other federal, state or local statutes, regulations,
ordinances or common law, or under any policy, agreement, contract,
understanding or promise, written or oral, formal or informal, between any of
the Company Releasees and Executive, including, without limitation, the
Employment Agreement, and shall further apply, without limitation, to any and
all Claims in connection with, related to or arising out of Executive’s
employment, or the termination of Executive’s employment, with the Company;
provided, however, that nothing contained in this General Release shall
(i) release any claim that cannot be waived under applicable law, (ii) release
Executive’s rights to any benefits under any employee benefit plan of the
Company or an affiliate, with respect to those Stock Options or Stock Awards
specifically listed in this Transition Agreement, or with respect to health care
continuation under COBRA, (iii) release any entitlement to or with respect to
indemnification which the Executive may have pursuant to Section 7 of the
Employment Agreement, as provided in Section 13 below, or pursuant to the
Company’s bylaws, any policy of insurance maintained by the Company or otherwise
under law, or (iv) be construed to release the Executive’s rights under this
Agreement or be construed to prohibit or restrict in any manner the Executive
from bringing appropriate proceedings to enforce this Agreement. Executive
acknowledges that his execution of the Transition Agreement terminates any
claims he previously held to any and all equity, compensation, and employee
benefits, other than those specifically identified in this Transition Agreement.

       (b) In consideration of the Executive’s promises in this Agreement, the
Company, on behalf of itself and each of its parents, subsidiaries and
affiliates, and each of their successors and assigns, hereby knowingly and
voluntarily releases and forever discharges Executive from any and all Claims,
which it ever had, now has, or may hereafter claim to have against Executive by
reason of any matter, cause or thing whatsoever arising from the beginning of
time to the time the Company signs this Agreement (the “Company Release”),
including, without limitation, all Claims of any type that the Company have
against Executive under any federal, state or local statutes, regulations,
ordinances or common law, or under any policy, agreement, contract,
understanding or promise, written or oral, formal or informal, between Executive
and any Company Releasee, including, without limitation, the Employment
Agreement, and any and all Claims in connection with, related to or arising out
of Executive’s employment, or the termination of Executive’s employment, with
the Company; provided, however, that nothing contained in this Company Release
shall release Executive from the Non- Competition provisions of Section 6 of the
Employment Agreement, in accordance with Section 10 above, or from Executive’s
obligations under the Employee’s Proprietary Information and Inventions
Agreement, effective June 1, 1989, entered into by the Executive and Biogen Inc.
(the “Proprietary Information and Inventions Agreement”).

       (c) Additionally, the Executive and the Company, on behalf of itself and
each of its parents, subsidiaries and affiliates, and each of their successors
and assigns, hereby agree to execute the Mutual Release and Waiver attached as
Exhibit D on the Separation Date. If the Executive timely delivers the Mutual
Release and Waiver, the Executive will be entitled to the benefits described in
Section 5(d) of this Agreement. Absent satisfaction of the provisions of the
foregoing sentence, the Executive is not entitled to the benefits described in
Section 5(d) of this Agreement. For the avoidance of doubt, the Executive’s

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    entitlement to the benefits described in Section 5(d) of this Agreement is
conditioned solely upon the Executive’s execution of the Mutual Release and
Waiver attached as Exhibit D and is not conditioned on the Company’s execution
of such release and waiver. The Company and the Executive further agree that the
Mutual Release and Waiver attached as Exhibit D shall only be effective with
respect to either party if it is executed by both parties.

12.   Withholding. All payments made by the Company to the Executive under this
Agreement shall be subject to applicable tax withholding.

13.   Indemnification. The Company agrees to provide the Executive with the
indemnification, insurance, expense advancement and other rights set forth in
Section 7 of the Employment Agreement, except that to the extent permitted by
law, the Company’s expense advancement obligations thereunder shall be
unconditional.

14.   Legal Fees. The Company shall pay, or reimburse the Executive for the
legal fees, charges and disbursements of the Executive’s counsel, Skadden, Arps,
Slate, Meagher & Flom LLP (“Skadden”) incurred in connection with the
negotiation and execution of this Agreement. Such reimbursement or payment shall
be made by the Company within ten business days of the Executive’s or Skadden’s
submission to the Company of an invoice or invoices in Skadden’s customary form,
which submission shall be made no later than thirty (30) days after the
Effective Date. In the event that the Executive recognizes income with respect
to such legal fee reimbursement, the Company shall pay to the Executive an
additional amount such that the Executive is in the same after-tax position he
would have been in had no income been recognized with respect to such
reimbursement. Such tax reimbursement (and any related tax gross-up) shall be
paid not later than 60 days following the date the applicable tax is paid by the
Executive. The Company further agrees to pay or reimburse the Executive, in the
manner set forth in this Section 14, for reasonable legal fees incurred by the
Executive following the Effective Date in connection with the matters covered by
this Agreement.

15.   Consultation with Attorney; Voluntary Agreement. Executive understands and
agrees that Executive has the right and has been given the opportunity to review
this Agreement and, specifically, the General Release in Section 11 above, with
an attorney. Executive also understands and agrees that Executive is under no
obligation to consent to the General Release set forth in Section 11 above.
Executive represents that he has read this Agreement, including the General
Release set forth in Section 11 and understand its terms and that Executive
enters into this Agreement freely, voluntarily, and without coercion.

16.   Effective Date; Revocation. Executive acknowledges and represents that he
has been given at least twenty-one (21) days during which to review and consider
the provisions of this Agreement and, specifically, the General Release set
forth in Section 11 above, although Executive may sign and return it sooner if
Executive so desires. Executive further acknowledges and represents that
Executive has been advised by the Company

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    that Executive has the right to revoke this Agreement for a period of seven
(7) days after signing it. Executive acknowledges and agrees that, if Executive
wishes to revoke this Agreement, he must do so in a writing, signed by Executive
and received by the Company no later than 5:00 p.m. Eastern Time on the seventh
(7th) day of the revocation period. If no such revocation occurs, the General
Release and this Agreement shall become effective on the eighth (8th) day
following Executive’s execution of this Agreement (the “Effective Date”).
Executive further acknowledges and agrees that, in the event that Executive
revokes this Agreement, it shall have no force or effect.

17.   Miscellaneous.

     (a) Except as modified hereby, the Employment Agreement shall remain in
effect in accordance with its terms; provided, however, that the provisions of
Section 5 of the Employment Agreement shall not apply except as explicitly
provided in this Agreement. In the event the terms of this Agreement conflict
with the terms of the Employment Agreement, this Agreement shall control. For
the avoidance of doubt, the terms of this Agreement set forth the parties’ final
agreement with respect to the termination of the Executive’s employment with and
service to the Company and the obligations of the parties in connection with
such termination.
     (b) This Agreement may not be modified or amended, and no breach shall be
deemed to be waived, unless agreed to in writing by the Executive and the
authorized designee of the Board. The captions and headings in this Agreement
are for convenience only, and in no way define or describe the scope or content
of any provision of this Agreement.
     (c) The Company and the Executive each hereby affirm that it is their
mutual view that the provision of payments and benefits described or referenced
herein are exempt from or in compliance with the requirements of Internal
Revenue Code Section 409A and that each party’s tax reporting shall be completed
in a manner consistent with such view. The Executive and the Company hereby
further agree that in the event that any payment or benefit made or provided to
the Executive in connection with his service to the Company results in the
imposition of an excise tax pursuant to Section 4999 of the Internal Revenue
Code, the Executive shall be entitled to the payment described in Section 5(f)
of the Employment Agreement, which shall be paid in the manner set forth
therein.
     (d) The parties agree that the Executive’s Proprietary Information and
Inventions Agreement shall remain in effect in accordance with its terms.
     (e) The Executive agrees to return to the Company, on the Separation Date
or immediately thereafter, all files, records, documents, reports, computers,
and other property of the Company in his possession or control and he further
agrees that he will not keep, transfer or use any copies or excerpts of the
foregoing items.

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     (f) The Executive agrees that during his employment and from and after the
Separation Date, he will make himself available to the Company to provide
reasonable cooperation and assistance to the Company with respect to areas and
matters in which he was involved during his employment, including any threatened
or actual litigation concerning the Company, and make himself reasonably
available to provide to the Company, if requested, information and counsel
relating to ongoing matters of interest to the Company. The Company agrees to
reimburse the Executive for the actual out-of- pocket expenses incurred by him
as a result of complying with this provision, subject to submission to the
Company of documentation substantiating such expenses as the Company may
require. The Executive’s obligations under this Section 17(f) after the
Separation Date shall be conditioned upon the Company’s execution of the Mutual
Release and Waiver attached as Exhibit D.
     (g) This Agreement may be executed in counterparts, each of which shall be
deemed an original, and which together shall be deemed to be one and the same
instrument.
     (h) The Company agrees that the Executive is not required to seek other
employment or to attempt in any way to reduce any amounts payable to the
Executive. Further, no payment or benefit provided for in this Agreement shall
be reduced by any compensation earned by the Executive as the result of
employment by another employer, by retirement benefits, by offset against any
amount claimed to be owed by the Executive to the Company or any affiliate, or
otherwise.
     (i) The Company and the Executive agree that the text set forth on
Exhibit E hereof shall be used by the Company for the press release announcing
this Agreement and the Transition Period with respect to the Executive.
     (j) The Company and the Executive agree that, in the event of a dispute
with respect to the provisions of this Agreement, the dispute resolution
provisions of Section 8 of the Employment Agreement shall apply, except that the
Company shall pay the Executive’s reasonable legal fees incurred in connection
with his enforcement of his rights hereunder.
     (k) In the event that any one or more of the provisions of this Agreement
shall be held to be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remainder of the Agreement shall not in any way be
affected or impaired thereby.
     (l) This Agreement shall he governed by and construed and enforced in
accordance with the laws of the Commonwealth of Massachusetts, without reference
to its choice of law rules. The parties hereby consent to submit to the
exclusive jurisdiction of the state and federal courts of the Commonwealth of
Massachusetts for any actions, suits or proceedings arising out of or relating
to this Agreement.

18.   Notices. Any and all notices, requests, demands and other communications
provided for by this Agreement shall be in writing and shall be effective when
delivered in person, consigned to a reputable national or international courier
service or deposited in the

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    United States mail, postage prepaid, registered or certified, and addressed
to the Executive at his last known address on the books of the Company or, in
the case of the Company, at the Company’s principal place of business, attention
of the General Counsel of the Company, or to such other address as either party
may specify by notice to the other actually received.

         
ACCEPTED AND AGREED TO:
  ACCEPTED AND AGREED TO:    
 
       
James C. Mullen
  Biogen Idec Inc.    
 
       
      /s/ James C. Mullen
 

     1/4/10
 
        /s/ William D. Young
 

     1/4/10
 
   
Date
  Date    

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EXHIBIT A
As of December 28, 2009
The contents of this exhibit are for informational purposes only and shall not
be construed to limit or reduce the entitlements of the Executive to benefits
under the terms of any benefit plan or program of the Company, as modified by
this Agreement.
401(k) Savings Plan
Supplemental Savings Plan
Employee Stock Purchase Plan
Disability Benefits
Life and Accidental Death & Dismemberment Insurance
Business Travel Accident Insurance
Medical Benefits, Dental Benefits, and Wellness & Fitness Programs
Career Policy (including, but not limited to, tuition reimbursements and service
awards)
Tax and Financial Planning Reimbursement
Vacation Policy

 

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EXHIBIT B
As of December 28, 2009
The contents of this exhibit are for informational purposes only and shall not
be construed to limit or reduce the entitlements of the Executive to benefits
under the terms of any benefit plan or program of the Company, as modified by
this Agreement.

                                                Exercise     Options     Options
    Options     Options Grant Date     Price     Granted     Vested     Unvested
    Outstanding
06/16/2000
  $51.85       287,500       287,500       0       287,500  
12/14/2001
  $49.03       402,500       402,500       0       402,500  
02/17/2005
  $67.57       325,000       325,000       0       325,000  
02/07/2006
  $44.59       240,000       60,000       60,000       120,000 1
02/13/2007
  $49.17       210,000       105,000       105,000       210,000  
02/13/2008
  $63.24       166,100       41,525       124,575       166,100  
02/25/2009
  $50.55       131,530       0       131,530       131,530  
Total
            1,762,630       1,221,525       421,105       1,642,630  

 

1   120,000 options have been exercised.

 

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EXHIBIT C
As of December 28, 2009
The contents of this exhibit are for informational purposes only and shall not
be construed to limit or reduce the entitlements of the Executive to benefits
under the terms of any benefit plan or program of the Company, as modified by
this Agreement.
Restricted Stock Unit Grant History

          Grant Date   RSUs Awarded   RSUs Unvested
02/13/2007
  70,000   23,333 02/13/2008   59,300   39,533 02/25/2009   49,455   49,455
Total   178,755   112,321

Performance-Based Restricted Stock Unit Award History

      Grant Date   Granted PBRSUs2 02/25/2009   49,455

 

2   The final number of PBRSUs which have been granted and will vest may change
depending on and subject to both (i) the extent to which the established
performance goals have been achieved and (ii) the corporate multiplier
determined by the Board.

 

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EXHIBIT D
MUTUAL RELEASE AND WAIVER
     MUTUAL RELEASE AND WAIVER AGREEMENT (this “Release Agreement”), dated as of
[DATE], between Biogen Idec Inc. (the “Company”) and James C. Mullen (the
“Executive”), dated as of [DATE].
     WHEREAS, the Company and Executive are parties to a Transition Agreement
dated [DATE] (the “Transition Agreement”); and
     WHEREAS, Executive’s service to the Company pursuant to the Transition
Agreement terminated as of [DATE];
     WHEREAS, the parties have agreed in the Transition Agreement to execute
this Release Agreement and have conditioned the receipt of certain benefits
under the Transition Agreement upon the Executive’s execution of this Release
Agreement on the Separation Date (as defined in the Transition Agreement);
     NOW, THEREFORE, in consideration of the promises and of the releases,
representations, and obligations contained herein, the parties hereto agree as
follows:
          1. Mutual Release of Claims.
               In consideration of the Company’s promises in this Release
Agreement, Executive hereby knowingly and voluntarily releases and forever
discharges the Company and each of its parents, subsidiaries and affiliates,
together with all of their respective current and former principals, officers,
directors, agents, representatives and employees, and each of their successors
and assigns (collectively, the “Company Releasees”), from any and all debts,
demands, actions, causes of actions, accounts, covenants, contracts, agreements,
claims, damages, omissions, promises, and any and all claims and liabilities
whatsoever, of every name and nature, known or unknown, suspected or
unsuspected, both in law and equity (“Claims”), which Executive ever had, now
has, or may hereafter claim to have against the Releasees by reason of any
matter, cause or thing whatsoever arising from the beginning of time to the time
Executive signs this Release Agreement (the “General Release”). This General
Release of Claims shall, except as set forth below, apply to any Claim of any
type, including, without limitation and by way of example only, any and all
Claims of any type that Executive may have arising under the common law, under
Title VII of the Civil Rights Act of 1964, the Civil Rights Act of 1991, the
Americans With Disabilities Act of 1967, the Family and Medical Leave Act of
1993, the Employee Retirement Income Security Act of 1974, the Sarbanes-Oxley
Act of 2002, the Massachusetts Fair Practices Act, Mass. Gen. L. ch. 151B and
Mass. Gen. L. ch. 149, §§ 24A-24J, the Massachusetts Civil Rights Act, and the
Massachusetts Equal Rights Law, each as amended, and any other federal, state or
local statutes, regulations, ordinances or common law, or under any policy,
agreement, contract, understanding or promise, written or oral, formal or
informal, between any of the Releases and Executive, and shall further apply,
without limitation, to any and all Claims in connection with, related to or
arising out of Executive’s employment or transition period, or the termination
of Executive’s employment or transition period, with the Company; provided,
however, that nothing contained in this General Release shall (i) release any
claim that cannot be

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waived under applicable law. (ii) release Executive’s rights to any benefits
under any employee benefit plan of the Company or an affiliate, with respect to
those Stock Options or Stock Awards specifically listed in the Transition
Agreement, or with respect to health care continuation under COBRA,
(iii) release any entitlement to indemnification which Executive may have
pursuant to Section 7 of the Employment Agreement between Executive and the
Company originally dated June 20, 2003 (as amended, the “Employment Agreement”),
as provided in Section 13 of the Transition Agreement, or pursuant to the
Company’s bylaws, any policy of insurance maintained by the Company or otherwise
in accordance with law, or (iv) be construed to release the Executive’s rights
under this Release Agreement or the Transition Agreement or to prohibit or
restrict in any manner the Executive from bringing appropriate proceedings to
enforce his rights under the Transition Agreement or this Release Agreement.
Executive acknowledges that his execution of the Transition Agreement and this
Release Agreement terminates any claims he previously held to any and all
equity, compensation, and employee benefits, other than those specifically
identified in the Transition Agreement.
               In consideration of the Executive’s promises in this Release
Agreement, the Company, on behalf of itself and each of its parents,
subsidiaries and affiliates, and each of their successors and assigns, hereby
knowingly and voluntarily releases and forever discharges Executive from any and
all Claims, which it ever had, now has, or may hereafter claim to have against
Executive by reason of any matter, cause or thing whatsoever arising from the
beginning of time to the time the Company signs this Release Agreement (the
“Company Release”), including, without limitation, all Claims of any type that
the Company have against Executive under any federal, state or local statutes,
regulations, ordinances or common law, or under any policy, agreement, contract,
understanding or promise, written or oral, formal or informal, between Executive
and any Company Releasee, including, without limitation, the Employment
Agreement, and any and all Claims in connection with, related to or arising out
of Executive’s employment or service to, or the termination of Executive’s
employment or service with, the Company; provided, however, that nothing
contained in this Company Release shall (i) release Executive from the
Non-Competition provisions of Section 6 of the Employment Agreement, in
accordance with Section 10 of the Transition Agreement, or from Executive’s
obligations under the Proprietary Information and Inventions Agreement, or
(ii) be construed to prohibit the Company from bringing appropriate proceedings
to enforce this Release Agreement.
               2. Consultation with Attorney; Voluntary Agreement. Executive
understands and agrees that Executive has the right and has been given the
opportunity to review this Release Agreement with an attorney. Executive also
understands and agrees that Executive is under no obligation to consent to this
Release Agreement. Executive represents that he has read this Release Agreement
and understand its terms and that Executive enter into this Agreement freely,
voluntarily, and without coercion.
               3. Effective Date. Executive acknowledges and represents that he
has been given reasonable time to review and consider the provisions of this
Release Agreement. This Release Agreement shall become effective upon
Executive’s execution below (subject to the provisions of Section 8 below),
which shall occur on the Separation Date (as defined in the Transition
Agreement).
               4. Severability. In the event that any one or more of the
provisions of this Release Agreement shall be held to be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remainder of the
Release Agreement shall not in any way be affected or impaired thereby.

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               5. Governing Law. This Release Agreement shall be governed by and
construed and enforced in accordance with the laws of the Commonwealth of
Massachusetts, without reference to its choice of law rules. The parties hereby
consent to submit to the exclusive jurisdiction of the state and federal courts
of the Commonwealth of Massachusetts for any actions, suits or proceedings
arising out of or relating to this Release Agreement.
               6. Headings. All descriptive headings in this Release Agreement
are inserted for convenience only and shall be disregarded in construing or
applying any provision of this Release Agreement.
               7. Counterparts. This Release Agreement may be executed in
counterparts, each of which shall be deemed an original but all of which
together shall constitute one and the same instrument.
               8. Effectiveness of Release Agreement. It is expressly agreed by
the Company and the Executive that the provisions of this Release Agreement
shall be null and void and of no force or effect unless the Release Agreement is
executed by both the executive and the Company.
          IN WITNESS WHEREOF, the Company and Executive have executed this
Release Agreement, on the date and year set forth below.

         
ACCEPTED AND AGREED TO:
  ACCEPTED AND AGREED TO:    
 
       
James C. Mullen
  Biogen Idec Inc.    
 
       
 
 
 
   
 
       
 
 
 
   
Date
  Date    
[To be signed on the Separation Date]
  [To be signed on the Separation Date]    

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