Document:

EX-10.3

Exhibit 10.3

AMENDMENT 2010-1 

TO THE

AMENDED AND RESTATED 2005 EMPLOYMENT AGREEMENT 

THIS AMENDMENT, dated as of October 12, 2010, between Integra LifeSciences Holdings
Corporation, a Delaware corporation (the “Company”) and John B. Henneman, III
(“Executive”).

RECITALS

WHEREAS, the Company and Executive previously entered into the Amended and Restated 2005
Employment Agreement, dated as of December 19, 2005, (as amended from time to time, the
“Employment Agreement”), that sets forth the terms and conditions of Executive’s employment
with the Company;

WHEREAS, as of January 2, 2008, the Company and Executive entered into Amendment 2008-1 to the
Employment Agreement (“Amendment 2008-1”) to comply with the requirements of Section 409A
of the Internal Revenue Code of 1986, as amended, and the final regulations issued thereunder;

WHEREAS, as of December 18, 2008, the Company and Executive entered into Amendment 2008-2 to
the Employment Agreement (“Amendment 2008-2”) to extend the term of Executive’s employment
and to modify certain other provisions of the Employment Agreement;

WHEREAS, as of April 13, 2009, the Company and Executive entered into Amendment 2009-1 to the
Employment Agreement (“Amendment 2009-1”) to provide for a temporary reduction in base
salary and change in the form of bonus for 2008 and 2009 and to modify certain other provisions of
the Employment Agreement;

WHEREAS, the Company and Executive desire to amend the Employment Agreement as set forth
herein; and

WHEREAS, Section 17(a) of the Employment Agreement provides that the Employment Agreement may
be amended pursuant to a written agreement between the Company and Executive.

NOW, THEREFORE, the Company and Executive hereby agree that, effective as of November 1, 2010,
the Employment Agreement shall be amended as follows:

1. Section 3 of the Employment Agreement is hereby amended and restated to read in its
entirety as follows:

“3. Term of Agreement. Unless earlier terminated by Executive or the Company as
provided in Section 12 hereof, the term of Executive’s employment under this Agreement shall
commence on the date of this Agreement and terminate on January 4, 2013 (the “Term”). Except as
hereinafter provided, on January 4, 2013 and on each subsequent one-year anniversary thereof, the
Term shall be automatically extended for one year unless either party shall have given to the other
party written notice of termination of this Agreement at least six months prior to such
anniversary. If written notice of termination is given as provided above, Executive’s employment
under this Agreement shall terminate on the last day of the then-current Term.”

2. Section 5 of the Employment Agreement is hereby amended and restated in its entirety to
read as follows:

“5. Compensation. As of January 1, 2010, Executive’s base salary rate is equal to
$500,000 per annum. Effective as of January 1, 2011, Executive’s base salary rate shall be equal
to $525,000 per annum, and effective as of January 1, 2012, Executive’s base salary rate shall be
equal to $550,000 per annum. Executive’s base salary, as determined in accordance with this
Section 5 and as may be increased from time to time, is hereinafter referred to as his “Base
Salary.” Executive’s Base Salary shall be payable in periodic installments in accordance with the
Company’s regular payroll practices in effect from time to time. Executive’s Base Salary shall be
subject to annual reviews, but may not be decreased without Executive’s express written consent.”

3. The following new Subsection 8(d) is hereby added to the Employment Agreement:

“(d) On or about December 15, 2010, the Company shall grant to Executive an award in
the form of restricted stock covering the number of shares of the Company’s common stock
equal to $3,000,000 in value based on the closing price of the Company’s common stock on the
grant date (the “2011 Extension Award”) pursuant to the Company’s Second Amended and
Restated 2003 Equity Incentive Plan and the terms and conditions set forth in the Restricted
Stock Agreement substantially in the form of Exhibit C hereto (the “2011 Restricted
Stock Agreement”). The parties acknowledge and agree that the 2011 Extension Award
consists of a signing award bonus. The 2011 Extension Award shall, subject to Executive’s
continued employment with the Company, vest with respect to 50% of the underlying shares on
each of the first- and second-year anniversaries of the grant date, subject to the terms and
conditions set forth in the 2011 Restricted Stock Agreement and the Company’s Second Amended
and Restated 2003 Equity Incentive Plan. The 2011 Extension Award is not intended to be in
lieu of, and shall not affect Executive’s rights to, any other equity compensation.”

	 	4.	 	Subsection 12(b) is revised in its entirety to read as follows: 

“(b) Termination with Salary Continuation (No Change in Control).
Except as provided in subsection 12(c) in the event of a Change in Control and subject to
Executive and the Company executing, within 30 days after the Termination Date, a mutual
release that is mutually agreeable (provided, however, that Executive shall not be required
to execute such mutual release as a condition to the receipt of the payments and benefits
described below unless the Company also executes such mutual release), in the event (i)
Executive’s employment is terminated by the Company for a reason other than death,
Disability or Cause, or (ii) Executive terminates his employment for Good Reason, or (iii)
Executive’s employment is terminated upon the expiration of the then-current Term by reason
of the Company’s election not to extend the Term pursuant to a Termination Notice provided
under Section 3 above, then the Company shall:

(1) pay Executive a severance amount equal to Executive’s Base Salary
(determined without regard to any reduction in violation of Section 5) as of
his last day of active employment, plus the target bonus under Section 6;
the severance amount shall be paid in a single sum on the first business day
of the month following the Termination Date;

(2) pay to Executive, for the period ending on the earliest of (i) the first
anniversary of the Termination Date, (ii) the date of Executive’s full-time
employment by another employer, (iii) Executive’s death, or (iv) the first
month in which Executive does not pay to the Company the applicable monthly
premium for COBRA insurance coverage under the Company’s group health plan,
a monthly cash payment, payable on the first business day of each month that
follows the Termination Date, in an amount equal to the aggregate monthly
premium cost for “COBRA” family health coverage under the Company’s group
health plan; and

(3) pay to Executive, for the period ending on the earliest of (i) the first
anniversary of the Termination Date, (ii) the date of Executive’s full-time
employment by another employer, or (iii) Executive’s death, a monthly cash
payment, payable on the first business day of each month that follows the
Termination Date, in an amount equal to the monthly premium cost that the
Company would have paid on behalf of Executive to cover Executive under the
Company’s life and disability insurance plans if Executive’s employment with
the Company had not terminated.”

	 	5.	 	Subsection 12(c) is revised in its entirety to read as follows: 

	 	 	 	“(c) Termination with Salary Continuation (Change in Control).
Notwithstanding anything to the contrary set forth in subsection 12(b), and
subject to Executive and the Company executing, within 30 days after the
Termination Date, a mutual release that is mutually agreeable (provided,
however, that Executive shall not be required to execute such mutual release
as a condition to the receipt of the payments and benefits described below
unless the Company also executes such mutual release), in the event within
twelve months of a Change in Control: (i) Executive terminates his employment
for Good Reason, or (ii) Executive’s employment is terminated by the Company
for a reason other than death, Disability or Cause, or (iii) Executive’s
employment is terminated upon the expiration of the then-current Term by
reason of the Company’s election not to extend the Term pursuant to a
Termination Notice provided under Section 3 above, then the Company shall:

	 	(1)	 	pay Executive a severance amount equal to 2.99
times the amount that results from adding Executive’s Base Salary
(determined without regard to any reduction in violation of Section 5)
as of his last day of active employment plus the target bonus under
Section 6; the severance amount shall be paid in a single sum on the
first business day of the month following the Termination Date;

	 	(2)	 	pay to Executive, for the period ending on the
earliest of (i) the later of December 19, 2014 or December 19 of the
year following the year in which the Termination Date occurs, or (ii)
the Executive’s death, or (iii) the earlier of (A) during the COBRA
continuation period, the first month in which Executive does not pay to
the Company the applicable monthly premium for COBRA insurance coverage
under the Company’s group health plan, or (B) following the expiration
of the COBRA continuation period, the first month in which Executive
does not provide the Company with evidence that he is receiving health
insurance coverage from another insurance provider, a monthly cash
payment, payable on the first business day of each month that follows
the Termination Date, in an amount equal to the aggregate monthly
premium cost for “COBRA” family health coverage under the Company’s
group health plan; and

	 	(3)	 	pay to Executive, for the period ending on the
earliest of (i) the later of December 19, 2014 or December 19 of the
year following the year in which the Termination Date occurs, or (ii)
the Executive’s death, a monthly cash payment, payable on the first
business day of each month that follows the Termination Date, in an
amount equal to the monthly premium cost that the Company would have
paid on behalf of Executive to cover Executive under the Company’s life
and disability insurance plans if Executive’s employment with the
Company had not terminated; and

	 	(4)	 	pay to Executive all reasonable legal fees and
expenses incurred by Executive during his lifetime as a result of such
termination of employment (including all fees and expenses, if any,
incurred by Executive in contesting or disputing any such termination
or in seeking to obtain to enforce any right or benefit provided to
Executive by this Agreement whether by arbitration or otherwise). The
foregoing limitation shall not preclude Executive’s estate or heirs
from recovering reasonable legal fees (and related expenses) in
accordance with the provisions hereof in the event that Executive’s
estate or heirs initiate or continue any dispute or controversy arising
under or in connection with this Agreement after Executive’s death;
provided, however, that such reasonable legal fees (and related
expenses) are incurred within the six (6)-year period following the
date of Executive’s death. The reimbursement shall be made within
ninety (90) days following the resolution of such contest or dispute
(whether or not appealed), but not later than the end of the calendar
year following the year in which the contest or dispute is resolved, to
the extent the Company receives reasonable written evidence of such
fees and expenses.”

	 	6.	 	Subsection 12(f)) is hereby deleted in its entirety.

7. The second full sentence of Section 15 is revised in its entirety to read as follows:

“In addition, the Company shall pay to Executive’s spouse and eligible dependents
for the period ending on the earlier of (i) the first anniversary of Executive’s
death, or (ii) the first month in which Executive’s spouse and/or eligible
dependents do not pay to the Company the applicable monthly premium for COBRA
insurance coverage under the Company’s group health plan, a monthly cash payment
that is equal to the aggregate monthly premium cost for “COBRA” family health
coverage under the Company’s group health plan.”

8. In all respects not modified by this Amendment 2010-1, the Employment Agreement, Amendment
2008-1, Amendment 2008-2 and Amendment 2009-1 are hereby ratified and confirmed.

[Signature page follows]

1

IN WITNESS WHEREOF, Company and Executive agree to the terms of the foregoing Amendment
2010-1, effective as of the date set forth above.

INTEGRA LIFESCIENCES HOLDINGS CORPORATION

	 	 	 
	By: /s/ Stuart M. Essig

	 

	Name:

Title:

	 	Stuart M. Essig

President and Chief Executive Officer

EXECUTIVE

/s/ John B. Henneman,III

John B. Henneman, III

2

Exhibit C

Form of Restricted Stock Agreement for Mr. Henneman

Annual Vesting Over Two Years

RESTRICTED STOCK AGREEMENT

THIS RESTRICTED STOCK AGREEMENT (the “Award Agreement”), dated as of December 15, 2010 (the
“Award Date”), is made by and between Integra LifeSciences Holdings Corporation, a Delaware
corporation (the “Company”), and John B. Henneman, III, an employee of the Company (or one or more
of its Related Corporations or Affiliates), hereinafter referred to as the “Participant”:

WHEREAS, the Company maintains the Integra LifeSciences Holdings Corporation 2003 Second
Amended and Restated Equity Incentive Plan (the “Plan”), and wishes to carry out the Plan, the
terms of which are hereby incorporated by reference and made part of this Award Agreement; and

NOW, THEREFORE, in consideration of the various covenants herein contained, and intending to
be legally bound hereby, the parties hereto agree as follows:

ARTICLE I

DEFINITIONS

Capitalized terms not otherwise defined below shall have the meaning set forth in the Plan or,
as indicated herein, in that certain Amended and Restated Employment Agreement dated as of December
19, 2005 between the Company and the Participant, as amended (the “Employment Agreement”), as
applicable. The masculine pronoun shall include the feminine and neuter, and the singular the
plural, where the context so indicates.

1.1 Restricted Stock. “Restricted Stock” shall mean        shares of Common Stock of the
Company issued under this Award Agreement and subject to the Restrictions imposed hereunder.

1.2 Restrictions. “Restrictions” shall mean the forfeiture and transferability restrictions
imposed upon Restricted Stock under the Plan and this Award Agreement.

1.3 Rule 16b-3. “Rule 16b-3” shall mean that certain Rule 16b-3 under the Exchange Act, as
such Rule may be amended from time to time.

1.4 Secretary. “Secretary” shall mean the Secretary of the Company.

1.5 Termination of Service. “Termination of Service” shall mean the time when the Participant
ceases to provide services to the Company and its Related Corporations and Affiliates as an
employee or Associate for any reason with or without cause, including, but not by way of
limitation, a termination by resignation, discharge, death, or Disability, but excluding a
termination where the Participant is simultaneously reemployed by, or remains employed by, or
continues to provide services to, the Company and/or one or more of its Related Corporations and
Affiliates or a successor entity thereto.

1.6 Vested Shares. “Vested Shares” shall mean the shares of Restricted Stock which are no
longer subject to the Restrictions by reason of Section 3.2.

1.7 Vesting Date. “Vesting Date” shall mean each of the first- and second-year anniversary
dates of the Award Date.

ARTICLE II

ISSUANCE OF RESTRICTED STOCK

2.1 Issuance of Restricted Stock. On the date hereof the Company issues to the Participant
the Restricted Stock subject to the Restrictions and other conditions set forth in this Award
Agreement. The Company shall cause the Restricted Stock to be issued in the name of the
Participant or held in book entry form, but if a stock certificate is issued it shall be delivered
to and held in custody by the Company until the Restrictions lapse or such Restricted Stock is
forfeited. As a further condition to the Company’s obligations under this Award Agreement, the
Participant’s spouse, if any, shall execute and deliver to the Company the Consent of Spouse
attached hereto as Exhibit A.

2.2 Restrictions. Until vested pursuant to Section 3.2, the Restricted Stock shall be subject
to forfeiture as provided in Section 3.1 and may not be sold, assigned, transferred, pledged, or
otherwise encumbered or disposed of.

2.3 Voting and Dividend Rights. The Participant, shall have all the rights of a stockholder
with respect to his Restricted Stock, including the right to vote the Restricted Stock, except that
the Participant shall have the right to receive all dividends or other distributions paid or made
with respect to only those outstanding vested shares of Common Stock.

ARTICLE III

RESTRICTIONS

3.1 Forfeiture. Upon the Participant’s Termination of Service, the Participant’s rights in
Restricted Stock that has not yet vested pursuant to Section 3.2 shall lapse, and such Restricted
Stock shall be surrendered to the Company without consideration (and, in the event that
certificates representing such Restricted Stock are held by the Company, such Restricted Stock
shall be so transferred without any further action by the Participant).

3.2 Termination of Restrictions. The Restrictions shall terminate and lapse, and such shares
shall vest in the Participant and become Vested Shares on each Vesting Date as provided in Section
3.3, provided that the Participant has continued to serve as an employee or an Associate from the
Award Date to and including such Vesting Date. For the avoidance of doubt, in the event that a
Termination of Service occurs on a Vesting Date as a result of the expiration of the term of the
Participant’s employment with the Company, the shares of Restricted Stock scheduled to vest on such
Vesting Date shall, as of such date, vest and become Vested Shares and the Restrictions thereon
shall lapse. Notwithstanding the foregoing, upon a Change in Control, or in the event that the
Participant’s employment is terminated by the Company without Cause, by the Participant for Good
Reason, or as a result of the Participant’s death or Disability (each as defined in the Employment
Agreement), all Restrictions on outstanding shares of Restricted Stock shall thereupon lapse and
all outstanding shares of Restricted Stock shall become Vested Shares.

3.3 Lapse of Restrictions. One-half of the shares of Restricted Stock shall become Vested
Shares on each Vesting Date. On each Vesting Date, the Company shall issue new certificates
evidencing such Vested Shares and deliver such certificates to the Participant or his legal
representative, or record such Vested Shares in book entry form, free from the legend provided for
in Section 4.2 and any of the other Restrictions; provided, however, such certificates shall bear
any other legends and such book entry accounts shall be subject to any other restrictions as the
Company may determine are required to comply with Section 4.6. Such Vested Shares shall cease to
be considered Restricted Stock subject to the terms and conditions of this Award Agreement.
Notwithstanding the foregoing, no such new certificate shall be delivered to the Participant or his
legal representative unless and until the Participant or his legal representative shall have
satisfied the full amount of all federal, state and local withholding or other employment taxes
applicable to the taxable income of the Participant resulting from the lapse of the Restrictions in
accordance with Section 4.3.

ARTICLE IV

MISCELLANEOUS

4.1 No Additional Rights. Nothing in this Award Agreement or in the Plan shall confer upon
any person any right to a position as an Associate or continued employment by the Company or any of
its Related Corporations or Affiliates or affect in any way the right of any of the foregoing to
terminate the services of an individual at any time.

4.2 Legend. Any certificates representing shares of Restricted Stock issued pursuant to this
Award Agreement shall, until all Restrictions lapse and new certificates are issued pursuant to
Section 3.3, bear the following legend:

THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN VESTING
REQUIREMENTS AND MAY BE SUBJECT TO FORFEITURE UNDER THE TERMS OF THAT CERTAIN RESTRICTED
STOCK AGREEMENT BY AND BETWEEN INTEGRA LIFESCIENCES HOLDINGS CORPORATION AND THE HOLDER OF
THE SECURITIES. PRIOR TO VESTING OF OWNERSHIP IN THE SECURITIES, THEY MAY NOT BE, SOLD,
ASSIGNED, TRANSFERRED, PLEDGED, OR OTHERWISE ENCUMBERED OR DISPOSED OF UNDER ANY
CIRCUMSTANCES. COPIES OF THE ABOVE REFERENCED AGREEMENT ARE ON FILE AT THE OFFICES OF THE
CORPORATION AT 311 ENTERPRISE DRIVE, PLAINSBORO, NEW JERSEY 08536.

4.3 Tax Withholding. On each Vesting Date, the Company shall inform the Participant of the
amount of tax which must be withheld by the Company under all applicable federal, state and local
tax laws. Subject to any applicable legal conditions or restrictions, the Company shall withhold
from the shares of Restricted Stock a number of whole shares of common stock having a fair market
value, determined as of such Vesting Date, not in excess of the minimum of tax required to be
withheld by law.

4.4 Notices. Any notice to be given under the terms of this Award Agreement to the Company
shall be addressed to the Company in care of its Secretary, and any notice to be given to the
Participant shall be addressed to him at the address given beneath his signature hereto. By a
notice given pursuant to this Section 4.4, either party may hereafter designate a different address
for notices to be given to it or him. Any notice which is required to be given to the Participant
shall, if the Participant is then deceased, be given to the Participant’s personal representative
if such representative has previously informed the Company of his status and address by written
notice under this Section 4.4. Any notice shall have been deemed duly given when enclosed in a
properly sealed envelope or wrapper addressed as aforesaid, deposited (with postage prepaid) in a
post office or branch post office regularly maintained by the United States Postal Service.

4.5 Titles. Titles are provided herein for convenience only and are not to serve as a basis
for interpretation or construction of this Award Agreement.

4.6 Conformity to Securities Laws. This Award Agreement is intended to conform to the extent
necessary with all provisions of the Securities Act and the Exchange Act and any and all
regulations and rules promulgated by the Securities and Exchange Commission thereunder, including
without limitation Rule 16b-3. Notwithstanding anything herein to the contrary, this Award
Agreement shall be administered, and the Restricted Stock shall be issued, only in such a manner as
to conform to such laws, rules and regulations. To the extent permitted by applicable law, this
Award Agreement and the Restricted Stock issued hereunder shall be deemed amended to the extent
necessary to conform to such laws, rules and regulations.

4.7 Amendment. This Award Agreement may be amended only by a writing executed by the parties
hereto which specifically states that it is amending this Award Agreement.

4.8 Governing Law. The laws of the State of Delaware shall govern the interpretation,
validity, administration, enforcement and performance of the terms of this Award Agreement
regardless of the law that might be applied under principles of conflicts of laws.

*****

IN WITNESS HEREOF, this Award Agreement has been executed and delivered by the parties hereto.

	 	 	 
	THE PARTICIPANT
	 	INTEGRA LIFESCIENCES

HOLDINGS CORPORATION

	 	 	By

	 
	 	 

	John B. Henneman, III
	 	Name:

	c/o Integra LifeSciences Corporation
	 	Title:

311 Enterprise Drive

Plainsboro, NJ 08536

3

EXHIBIT A

CONSENT OF SPOUSE

I,       , spouse of       , have read and approve the foregoing
Award Agreement. In consideration of granting of shares of Integra LifeSciences Holdings
Corporation to my spouse as set forth in the Award Agreement, I hereby appoint my spouse as my
attorney-in-fact in respect to the exercise of any rights under the Award Agreement and agree to be
bound by the provisions of the Award Agreement insofar as I may have any rights in said Award
Agreement or any shares issued pursuant thereto under the community property laws or similar laws
relating to marital property in effect in the state of our residence as of the date of the signing
of the foregoing Award Agreement.

Dated:       ,       

      

Name:

4EX-10.4

Exhibit 10.4

[Form for Arduini Fully Vested Contract Stock Grant]

INTEGRA LIFESCIENCES HOLDINGS CORPORATION

CONTRACT STOCK AGREEMENT

Pursuant to

2003 EQUITY INCENTIVE PLAN

AGREEMENT, dated as of       , 20      , by and between Integra LifeSciences Holdings
Corporation, a Delaware corporation (the “Company”), and Peter J. Arduini (the
“Executive”).

WHEREAS, the Company and Executive have previously entered into that certain employment
agreement dated as of [      ], 2010 (the “Employment Agreement”); WHEREAS, pursuant to
the Employment Agreement, the Company has agreed to grant to Executive an aggregate of [      ]
(      ) shares of Contract Stock in the form of fully vested units (the
“Units”) representing the right to receive an equal number of shares of common stock of the
Company, par value $.01 per share (“Common Stock”), on the terms and conditions set forth
herein; and

WHEREAS, the grant of Units and the issuance of Common Stock hereunder is being made under the
Integra LifeSciences Holdings Corporation Second Amended and Restated 2003 Equity Incentive Plan
(the “2003 Plan”), the terms of which are hereby incorporated by reference and made part of
this Award Agreement.

NOW, THEREFORE, in consideration of the mutual covenants hereinafter set forth and for other
good and valuable consideration the legal sufficiency of which is hereby acknowledged, the parties
hereto, intending to be legally bound hereby, agree as follows:

1. Definitions. Capitalized terms not otherwise defined herein shall have the
meanings set forth in the Employment Agreement or the 2003 Plan, as applicable, unless otherwise
indicated.

2. Grant of Units. Pursuant to Section [6(b)/7(a)] of the Employment Agreement,
Executive is hereby granted, as of [      ], deferred compensation in the form of [      ]
(      ) fully vested Units pursuant to the terms of this Agreement and the 2003 Plan.

3. Dividend Equivalents. Executive shall be entitled to receive, with respect to all
outstanding Units (as such Units may be adjusted under Section 6), dividend equivalent amounts
equal to the regular quarterly cash dividend payable to holders of Common Stock (to the extent
regular quarterly cash dividends are paid) as if Executive were an actual shareholder with respect
to the number of shares of Common Stock equal to his outstanding Units. Such dividend equivalent
amounts shall be aggregated on a quarterly basis while the Units are outstanding and paid to
Executive within thirty (30) days following the first business day that occurs immediately
following the 6-month period after the date of Executive’s “separation from service” from the
Company (within the meaning of Section 409A(a)(2)(A)(i) of the Internal Revenue Code of 1986, as
amended (the “Code”) and its corresponding regulations) (a “Separation from
Service”). The dividend equivalents and any amounts that may become payable in respect thereof
shall be treated separately from the Units and the rights arising in connection therewith for
purposes of the designation of time and form of payments required by Code Section 409A.

4. Payment of Units.

(a) The shares of Common Stock underlying the Units (the “Unit Shares”) shall be paid
out to Executive within thirty (30) days following the first business day that occurs immediately
following the 6-month period after the date of Executive’s Separation from Service.

(b) All payments of Unit Shares shall be made by the Company in the form of whole shares of
Common Stock, and any fractional share shall be distributed in cash in an amount equal to the value
of such fractional share determined based on the Fair Market Value (as defined in the 2003 Plan) as
of the date immediately prior to such distribution.

(c) Any Unit Shares delivered shall be deposited in an account designated by Executive and
maintained at a brokerage house selected by Executive. Any such Unit Shares shall be duly
authorized, fully paid and non-assessable shares, listed with NASDAQ or the principal United States
securities exchange on which the Common Stock is admitted to trading and, so long as the Company is
required to file reports under Section 13 or 15(d) of the Securities Exchange Act of 1934,
registered on a Form S-8 registration statement maintained by the Company, if registration is
requested by Executive.

(d) Except as otherwise provided in this Agreement, Executive shall not be deemed to be a
holder of any Common Stock pursuant to a Unit until the date of the issuance of a certificate to
him for such shares and, except as otherwise provided in this Agreement, Executive shall not have
any rights to dividends or any other rights of a shareholder with respect to the shares of Common
Stock covered by a Unit until such shares of Common Stock have been issued to him, which issuance
shall not be unreasonably delayed.

(e) The Company shall be entitled to withhold in cash, shares or deduction from other
compensation payable to the Executive any sums required by federal, state or local tax law to be
withheld with respect to the grant, vesting, distribution or payment of the Units or the Unit
Shares. In satisfaction of the foregoing requirement with respect to the grant, vesting,
distribution or payment of the Units or Unit Shares, to the extent permitted by Section 409A of the
Code, including Treas. Reg. Section 1.409A-3(j)(4)(vi), the Company shall withhold shares of Common
Stock otherwise issuable upon payment of the Units having a Fair Market Value equal to the sums
required to be withheld. Subject to the following sentence, the number of shares of Common Stock
which shall be so withheld in order to satisfy the Executive’s federal, state and local withholding
tax liabilities with respect to the grant, vesting, distribution or payment of the Units or Unit
Shares shall be limited to the number of shares which have a Fair Market Value on the date of
withholding equal to the aggregate amount of such liabilities based on the minimum statutory
withholding rates for federal, state and local tax purposes that are applicable to such
supplemental taxable income. In the event that the number of shares of Common Stock having a Fair
Market Value equal to the sums required to be withheld is not a whole number of shares, the number
of shares so withheld shall be rounded up to the nearest whole share.

(f) Executive’s right to receive payment of any amounts under this Agreement shall be an
unfunded entitlement and shall be an unsecured claim against the general assets of the Company.

(g) After payment in accordance with this Section 4, the Unit Shares may not be sold,
transferred or otherwise disposed of by Executive for a period of five days after receipt of such
shares by Executive, except that no such restrictions shall apply in the case of a Change in
Control (as defined in the Employment Agreement) or in the event that Unit Shares are sold or
withheld in order to satisfy any obligations Executive may have with respect to any applicable tax
withholding requirements on vesting or receipt of Unit Shares (including, without limitation,
pursuant to Section 4(e) above).

5. Representations. The Company represents and warrants that this Agreement has been
authorized by all necessary action of the Company, has been approved by the Board and is a valid
and binding agreement of the Company enforceable against it in accordance with its terms and that
the Unit Shares will be issued pursuant to and in accordance with the 2003 Plan, will be listed
with NASDAQ or the principal United States securities exchange on which the Common Stock is
admitted to trading, and will be validly issued, fully paid and non-assessable shares. The Company
further represents and warrants that the grant of Units under this Agreement has been approved by
the Company’s Compensation Committee, that the 2003 Plan has and will have sufficient shares
available to effect the distribution of the Unit Shares.

6. Changes in the Common Stock and Adjustment of Units.

(a) In the event the outstanding shares of the Common Stock shall be changed into an increased
number of shares, through a share dividend or a split-up of shares, or into a decreased number of
shares, through a combination of shares, then immediately after the record date for such change,
the number of Units then subject to this Agreement shall be proportionately increased, in case of
such share dividend or split-up of shares, or proportionately decreased, in case of such
combination of shares. In the event the Company shall issue any of its shares of stock or other
securities or property (other than Common Stock which is covered by the preceding sentence), in a
reclassification of the Common Stock (including without limitation any such reclassification in
connection with a consolidation or merger in which the Company is the continuing entity), the kind
and number of Units subject to this Agreement immediately prior thereto shall be adjusted so that
the Executive shall be entitled to receive the same kind and number of shares or other securities
or property which the Executive would have owned or have been entitled to receive after the
happening of any of the events described above, had he owned the shares of the Common Stock
represented by the Units under this Agreement immediately prior to the happening of such event or
any record date with respect thereto, which adjustment shall become effective immediately after the
effective date of such event retroactive to the record date, if any, for such event.

(b) In the event the Company shall distribute to all holders of the Common Stock evidences of
its indebtedness or assets (including leveraged recapitalizations with special cash distributions,
but excluding regular quarterly cash dividends), then in each case the number of Units thereafter
subject to this Agreement shall be determined by multiplying the number of Units theretofore
subject to this Agreement by a fraction, (i) the numerator of which shall be the then current
market price per share of Common Stock (as determined in paragraph (c) below) on the record date
for such distribution, and (ii) the denominator of which shall be the then current market price per
share of the Common Stock less the then fair value (as mutually determined in good faith by the
Board and the Executive) of the portion of the assets or evidences of indebtedness so distributed
applicable to a share of Common Stock. Such adjustment shall be made whenever any such
distribution is made, and shall become effective on the date of distribution retroactive to the
record date for the determination of shareholders entitled to receive such distribution.

(c) For the purpose of any computation under paragraph (b) of this Section 6, the current
market price per share of the Common Stock at any date shall be deemed to be the average of the
daily Stock Prices (as defined herein) for 15 consecutive Trading Days (as defined herein)
commencing 20 Trading Days before the date of such computation. “Stock Price” for each
Trading Day shall be the “Fair Market Value” of the Common Stock (as defined in the 2003 Plan, as
in effect on the date of this Agreement) for such Trading Day. “Trading Day” shall be each
Monday, Tuesday, Wednesday, Thursday and Friday, other than any day on which the Common Stock is
not traded on the exchange or in the market which is the principal United States market for the
Common Stock.

(d) For the purpose of this Section 6, the term “Common Stock” shall mean (i) the
class of Company securities designated as the Common Stock at the date of this Agreement, or (ii)
any other class of equity interest resulting from successive changes or reclassifications of such
shares consisting solely of changes in par value, or from par value to no par value, or from no par
value to par value. In the event that at any time, as a result of an adjustment made pursuant to
the second sentence of Section 6(a) above, the Executive shall become entitled to Units
representing any shares other than the Common Stock, thereafter the number of such other shares
represented by a Unit shall be subject to adjustment from time to time in a manner and on the terms
as nearly equivalent as practicable to the provisions with respect to the shares contained in this
Section 6, and the provisions of this Agreement with respect to the shares of Common Stock
represented by the Units shall apply on like terms to any such other shares.

(e) In case of any Change in Control, consolidation of the Company, or merger of the Company
with another corporation as a result of which Common Stock is converted or modified, or in case of
any sale or conveyance to another corporation of the property, assets and business of the Company
as an entirety or substantially as an entirety, the Company shall modify the Units so as to provide
the Executive with Units reflecting the kind and amount of shares and other securities and property
(or cash, as applicable) that he would have owned or have been entitled to receive immediately
after the happening of such Change in Control, consolidation, merger, sale or conveyance had his
Units immediately prior to such action actually been shares and, if applicable, other securities of
the Company represented by those Units. The provisions of this Section 6(e) shall similarly apply
to successive consolidations, mergers, sales or conveyances.

(f) If the Company distributes rights or warrants to all holders of its Common Stock entitling
them to purchase shares of Common Stock at a price per share less than the current market price per
share on the record date for the distribution, the Company shall distribute to Executive equivalent
amounts of such rights or warrants as if Executive were an actual shareholder with respect to the
number of shares of Common Stock equal to his outstanding Units. Such rights or warrants shall be
exercisable at the same time, on the same terms and for the same price as the rights or warrants
distributed to holders of the Common Stock; provided, however, that if such rights or warrants are
deemed to be deferred compensation subject to the requirements of Section 409A of the Code, such
rights or warrants shall be distributed to Executive in a manner that complies with such
requirements.

(g) In case any event shall occur as to which the provisions of this Section 6 are not
applicable but the failure to make any adjustment would not fairly protect the rights represented
by the Units in accordance with the essential intent and principles of this Section 6 then, in each
such case, the Company shall make an adjustment, if any, on a basis consistent with the essential
intent and principles established in this Section 6, necessary to preserve, without dilution, the
rights represented by the Units. The Company will promptly notify the Executive of any such
proposed adjustment.

(h) Notwithstanding anything to the contrary contained herein, the provisions of Section 6
shall not apply to, and no adjustment is required to be made in respect of, any of the following:
(i) the issuance of shares of Common Stock upon the exercise of any other rights, options or
warrants that entitle the holder to subscribe for or purchase such shares (it being understood that
the sole adjustment pursuant to this Section 6 in respect of the issuance of shares of Common Stock
upon exercise of rights, options or warrants shall be made at the time of the issuance by the
Company of such rights, options or warrants, or a change in the terms thereof); (ii) the issuance
of shares of Common Stock to the Company’s employees, directors or consultants pursuant to bona
fide benefit plans adopted by the Company’s Board; (iii) the issuance of shares of Common Stock in
a bona fide public offering pursuant to a firm commitment offering; (iv) the issuance of shares of
Common Stock pursuant to any dividend reinvestment or similar plan adopted by the Company’s Board
to the extent that the applicable discount from the current market price for shares issued under
such plan does not exceed 5%; and (v) the issuance of shares of Common Stock in any arm’s length
transaction, directly or indirectly, to any party.

(i) Notwithstanding anything in this Agreement to the contrary, in the event of a spin-off by
the Company to its shareholders, Executive’s participation in such spin-off with respect to the
Units and the adjustment of the Units shall be determined in an appropriate and equitable manner,
and it is the intention of the parties hereto that, to the extent practicable, such adjustment
shall include an equity interest in the spin-off entity.

(j) In the event the parties hereto cannot agree upon an appropriate and equitable adjustment
to the Units, the services of an independent investment banker mutually acceptable to Executive and
the Company shall (at the sole expense of the Company) be retained to determine an appropriate and
equitable adjustment, and such determination shall be binding upon the parties.

(k) Notwithstanding the foregoing, no adjustment shall be made and no action shall be taken
under this Section 6 to the extent that such adjustment or action shall cause the Units to fail to
comply with Section 409A of the Code or the Treasury Regulations thereunder (to the extent
applicable to the Units).

7. No Right to Employment. Nothing in this Agreement shall confer upon Executive the
right to remain in employ of the Company or any subsidiary of the Company.

8. Nontransferability. This Agreement shall not be assignable or transferable by the
Company (other than to successors of the Company) and this Agreement and the Units shall not be
assignable or transferable by the Executive otherwise than by will or by the laws of descent and
distribution, and the Units may be paid out during the lifetime of the Executive only to him. More
particularly, but without limiting the generality of the foregoing, the Units may not be assigned,
transferred (except as provided in the preceding sentence), pledged, or hypothecated in any way
(whether by operation of law or otherwise), and shall not be subject to execution, attachment or
similar process. Any attempted assignment, transfer, pledge, hypothecation or other disposition of
the Units contrary to the provisions of this Agreement, and any levy of any attachment or similar
process upon the Units, shall be null and void and without effect.

9. Entire Agreement. This Agreement and the Employment Agreement contain all the
understandings between the parties hereto pertaining to the matters referred to herein, and
supersede all undertakings and agreements, whether oral or in writing, previously entered into by
them with respect thereto. The Executive represents that, in executing this Agreement, he does not
rely and has not relied upon any representation or statement not set forth herein made by the
Company with regard to the subject matter, basis or effect of this Agreement or otherwise.

10. Amendment or Modification; Waiver. No provision of this Agreement may be
amended, modified or waived unless such amendment or modification is agreed to in writing, signed
by the Executive and by a duly authorized officer of the Company, and such waiver is set forth in
writing and signed by the party to be charged. No waiver by any party hereto of any breach by
another party hereto of any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of a similar or dissimilar condition or provision at the same time,
any prior time or any subsequent time.

11. Notices. Any notice to be given hereunder shall be in writing and shall be
deemed given when delivered personally, sent by courier or telecopy or registered or certified
mail, postage prepaid, return receipt requested, addressed to the party concerned at the address
indicated below or to such other address as such party may subsequently give notice of hereunder in
writing:

To the Executive: at Executive’s most recent address on the records of the
Company

To the Company:

Integra LifeSciences Holdings Corporation

311 Enterprise Drive

Plainsboro, NJ 08536

Attention: Chairman

Facsimile: 609-275-9006

(with a copy to the Company’s Chief Executive Officer and the Company’s General
Counsel)

Any notice delivered personally or by courier under this Section 11 shall be deemed given on
the date delivered and any notice sent by telecopy or registered or certified mail, postage
prepaid, return receipt requested, shall be deemed given on the date telecopied or mailed.

12. Severability. If any provision of this Agreement or the application of any such
provision to any party or circumstances shall be determined by any court of competent jurisdiction
to be invalid and unenforceable to any extent, the remainder of this Agreement or the application
of such provision to such person or circumstances, other than those to which it is so determined to
be invalid and unenforceable, shall not be affected thereby, and each provision hereof shall be
validated and shall be enforced to the fullest extent permitted by law.

13. Noncontravention. The Company represents that the Company is not prevented from
entering into, or performing, this Agreement by the terms of any law, order, rule or regulation,
its certificate of incorporation or by-laws, or any agreement to which it is a party.

14. Survivorship. The respective rights and obligations of the parties hereunder
shall survive any termination of this Agreement or Executive’s employment to the extent necessary
for the intended preservation of such rights and obligations.

15. Successors. This Agreement shall inure to the benefit of and be binding upon
each successor of the Company, and upon the Executive’s beneficiaries, legal representatives or
estate, as the case may be.

16. Construction. Except as would be in conflict with any specific provision herein,
this Agreement is made under and subject to the provisions of the 2003 Plan as in effect on the
Grant Date and, except as would conflict with the provisions of this Agreement, all of the
provisions of the 2003 Plan as in effect on the Grant Date are hereby incorporated herein as
provisions of this Agreement. In the event of any such conflict, the terms of this Agreement shall
govern.

17. Governing Law. This agreement will be governed by and construed in accordance
with the laws of the State of Delaware, without regard to its conflicts of laws principles.

18. Headings. All descriptive headings of sections and paragraphs in this Agreement
are for convenience of reference only, and they form no part of this Agreement and shall not affect
its interpretation.

19. Counterparts. This 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.

20. Section 409A of the Code. This Agreement is intended to comply with the
requirements of Section 409A of the Code, and shall in all respects be administered and interpreted
in accordance with Section 409A. Notwithstanding anything in the Agreement to the contrary,
payment may only be made under the Agreement upon an event and in a manner permitted by Section
409A of the Code. If a payment is not made by the designated payment date under the Agreement, the
payment shall be made by December 31 of the calendar year in which the designated date occurs. Any
payment to be made upon a termination of employment under this Agreement may only be made upon a
Separation from Service. To the extent that any provision of the Agreement would cause a conflict
with the requirements of Section 409A of the Code, or would cause the administration of the
Agreement to fail to satisfy the requirements of Section 409A, such provision shall be deemed null
and void to the extent permitted by applicable law.

[Signature page follows]

1

IN WITNESS WHEREOF, the parties hereto have executed this Contract Stock Agreement as of the
date first above written.

INTEGRA LIFESCIENCES HOLDINGS CORPORATION

By:

Name:

Title:

EXECUTIVE

Peter J. Arduini

2

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