Document:

SECURITIES REDEMPTION OPTION AGREEMENT

This SECURITIES REDEMPTION
OPTION AGREEMENT (the “Agreement”), dated January 10, 2013 (the “Effective Date”),
is by and between Vicis Capital Master Fund, a sub-trust of Vicis Capital Series Master Trust, a unit trust organized and existing
under the laws of the Cayman Islands (“Vicis”), with a mailing address care of Vicis Capital, LLC, 445 Park
Avenue, Suite 1901, New York, New York 10022, and OptimizeRx Corporation, a Nevada corporation maintaining a mailing address at
400 Water Street, Suite 200, Rochester, MI 48307 (the “Company”).

 

BACKGROUND INFORMATION

 

Vicis holds common stock,
warrants to purchase common stock, and preferred stock issued by the Company. The Company wishes
to obtain an option to redeem such securities. Vicis is willing to grant the Company such option and limited right of first refusal,
but only upon the terms and conditions set forth herein. Accordingly, in consideration of the covenants herein contained, and other
good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

 

OPERATIVE PROVISIONS

1.                  
Definition of Securities. The term “Securities”
as used in this Agreement shall mean all of the securities set forth on Exhibit “A”
to this Agreement, together with, in each case, all securities issued in substitution
of or exchange for, or on account of, any such Securities, including, but not limited to, securities issued upon a conversion,
stock dividend, stock split, reverse stock split, recapitalization, reclassification, merger, consolidation, combination of shares,
spinoff or otherwise, and all rights, powers and privileges that attach to any such Securities, including, but not limited to,
voting rights, preferential rights, liquidiation rights, dividends of any type whether accrued, unpaid, or otherwise, interest,
appreciation, distributions, and all other rights, powers and privileges appertaining to any such Securities as the case may be.

2.                  
Grant and Vesting of Option. Vicis hereby
grants to the Company an option (the “Option”) to redeem from Vicis all (but not a portion of) the Securities
of the Company. The Option to acquire the Securities shall become immediately exercisable upon the execution of this Agreement.

3.                  
Option Purchase Price. The purchase price
for this Option (the “Option Purchase Price”) shall be one hundred dollars ($100), and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged. The Option Purchase Price is payable, in cash via
wire transfer or certified check, upon execution and delivery of this Agreement.

4.                  
Securities Redemption Price. Upon exercise
of the Option, the redemption price for the Securities (the “Securities Redemption Price”) shall be Nine Million
Dollars ($9,000,000) cash. 

5.                  
Term; Termination. The term of the
Option shall be for a period that commences on the Effective Date and expires on December 31, 2013, unless sooner terminated by
mutual written agreement of Vicis and the Company (the “Termination Date”). The Option is not intended to be
an “incentive stock option” within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended.

6.                  
Exercise Procedure; Closing. The
Company may exercise the Option by delivering written notice to Vicis, at any time prior to the Termination Date, of the Company’s
intent to exercise the Option (the “Exercise Notice”). The closing of the
sale and redemption of the Securities shall take place at a time and date mutually agreeable
to Vicis and the Company, which shall be no later than ten (10) days after the date that the Exercise Notice is given to Vicis
(the “Closing”), it being understood that such date for Closing may be after the Termination Date. The Closing
shall occur at the offices of legal counsel for Vicis, or at such other location (which may include the waiver of any physical
closing and the exchange of executed documentation by facsimile or electronic transmission or
otherwise), as may be agreed to by Vicis and the Company. If the parties do not mutually agree to a time and date for the Closing,
the Closing shall occur at 10:00 a.m., Eastern Prevailing Time, on the tenth (10th) day after the date that the Exercise
Notice is given to Vicis. At the Closing, (a) Vicis and the Company shall execute a redemption agreement (the “Redemption
Agreement”) in the form attached hereto as Exhibit “B”, (b) Vicis shall deliver to Company
the certificates or instruments evidencing the Securities in negotiable
form or accompanied by an executed stock power or instrument of transfer in a form acceptable to Company, and (c) Company
shall deliver to Vicis payment of the Securities Redemption Price.

    	 

    	 

    

7.                  
Representations and Warranties of Vicis. In
order to induce the Company to enter into this Agreement and to consummate the transactions contemplated hereby, Vicis represents
and warrants to Company that:

 

(a)                
Authorization. When executed and delivered by Vicis, this Agreement will constitute
the valid and binding obligation of Vicis, enforceable in accordance with its terms except as the enforcement thereof may be limited
by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws generally affecting the rights of creditors and
subject to general equity principles.

 

(b)                
Consent. No consent, approval or authorization of or registration, qualification,
designation, declaration or filing with any governmental authority or private person or entity on the part of Vicis is required
in connection with the execution and delivery of this Agreement or the consummation of any other transaction contemplated hereby,
except as may be required pursuant to the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder.

 

(c)                
No Contractual Violation. Neither the execution, delivery nor performance of
this Agreement by Vicis, including the consummation by Vicis of the transactions contemplated hereby, will constitute a violation
of or a default under, or conflict with, any term or provision of any contract, commitment, indenture or other agreement, or of
any other private restriction of any kind, to which Vicis is a party or by which it is otherwise bound.

 

(d)                
Title to Securities. Vicis has good and marketable title to the Securities free
and clear of all liens, claims, encumbrances and restrictions, legal or equitable, of every kind, except for certain restrictions
on transfer imposed by federal and state securities laws. Vicis has full and unrestricted legal right, power and authority to sell,
assign and transfer such Securities to the Company without obtaining the consent or approval of any other person or governmental
authority.

 

8.                  
Representations and Warranties of the Company.
The Company represents and warrants to Vicis that:

 

(a)Authorization.
When executed and delivered by the Company, this Agreement will constitute the valid and binding obligation of the Company, enforceable
in accordance with its terms, except as the enforcement thereof may be limited by applicable bankruptcy, insolvency, reorganization,
moratorium or similar laws generally affecting the rights of creditors and subject to general equity principles.

 

(b)Consent.
No consent, approval or authorization of or registration, qualification, designation, declaration or filing with any governmental
authority or private person or entity on the part of the Company is required in connection with the execution and delivery of this
Agreement or the consummation of any other transaction contemplated hereby, except as shall have been duly taken or effected prior
to the Closing.

 

(c)No
Contractual Violation. Neither the execution, delivery nor performance of this Agreement by the Company, including the
consummation by the Company of the transactions contemplated hereby, will constitute a violation of or a default under, or conflict
with, any term or provision of any contract, commitment, indenture or other agreement, or of any other private restriction of any
kind, to which the Company is a party or by which it is otherwise bound.

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9.                  
Covenants of Vicis. Vicis covenants as follows: 

(a)               
Transfer or Disposition of Securities. As long as this Option remains outstanding,
Vicis shall not sell, convey, transfer, exchange, or otherwise dispose of any of the Securities or any interest therein or create,
incur, or permit to exist any pledge, mortgage, lien, charge, encumbrance, or any security interest whatsoever with respect to
any of the Securities, unless the following conditions are satisfied: (i) all of the Securities are sold in a single transaction
and Vicis has complied with Section 9(b) below or (ii) less than all of the Securities are sold in a single transaction and Vicis
has complied with Section 9(c) below.

 

(b)              
 Sale of all the Securities. If Vicis intends to sell, prior to the Termination Date,
in a bona fide arm’s length transaction, all of the Securities, then Vicis shall follow the procedures set forth in this
Section 9(b) below before effecting such sale. 

 

(i)                  
Right of First Refusal. Vicis shall submit a written offer to sell all the Securities
(the “Offer”) to the Company, which document shall contain the terms of the Offer, including the purchase price
(the “Offer Price”), the terms for payment of the purchase price, and the proposed closing date.

 

(ii)                
Acceptance of Offer by the Company. The Company may accept the Offer by giving written
notice to Vicis prior to the earlier of [A] ten (10) calendar days after having been furnished the Offer, or [B] the Termination
Date (the “Right of First Refusal Expiration Time”). Alternatively, the Company may fulfill all the conditions
to exercise of the Option and exercise the Option prior to the Right of First Refusal Expiration Time.

 

(iii)               
Permitted Sale. If the Company does not accept the Offer by the Right of First Refusal
Expiration Time and close on the Offer in accordance with its terms, then Vicis shall have the right to sell the Securities on
the same terms and conditions set forth in the Offer (a “Permitted Sale”), free and clear of the Company’s
rights under this Agreement (including this right to be made the Offer and the Option); provided, however, if Vicis
does not sell all of the Securities within ninety (90) calendar days after having furnished the Offer to the Company, on the same
terms and conditions set forth in the Offer, then Vicis shall not thereafter sell the Securities, without first again offering
such Securities to the Company in the manner provided in this Section 9(b).

 

(c)               
Sale of Less than All the Securities. If Vicis intends to sell, prior to the Termination
Date, in a bona fide arm’s length transaction, less than all of the Securities, then Vicis shall follow the procedures set
forth in this Section 9(c) below before effecting such sale. 

 

(i)                  
 Right of First Refusal. Vicis shall provide written notice to the Company no less
than ten (10) calendar days prior to the sale of less than all of the Securities. Vicis shall submit a written offer to sell such
Securities (the “Partial Sale Offer”) to the Company, which document shall contain the terms of the Partial
Sale Offer, including the purchase price (the “Partial Sale Offer Price”), the terms for payment of the purchase
price, and the proposed closing date.

 

(ii)                
Acceptance of Partial Sale Offer by the Company. The Company may accept the Partial
Sale Offer by giving written notice to Vicis prior to the earlier of [A] ten (10) calendar days after having been furnished the
Partial Sale Offer, or [B] the Termination Date (the “Partial Sale Right of First Refusal Expiration Time”).
Alternatively, the Company may fulfill all the conditions to exercise of the Option and exercise the Option prior to the Partial
Sale Right of First Refusal Expiration Time.

 

(iii)               
Permitted Sale. If the Company does not accept the Partial Sale Offer by the Partial
Sale Right of First Refusal Expiration Time and close on the Partial Sale Offer in accordance with its terms, then Vicis shall
have the right to sell such Securities on the same terms and conditions set forth in the Partial Sale Offer (a “Permitted
Partial Sale”), free and clear of the Company’s rights under this Agreement (including this right to be made the
Partial Sale Offer and the Option). In addition, upon completion of a Permitted Partial Sale, this Agreement (including this right
to be made the Partial Sale Offer and the Option) shall be deemed to have expired.

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10.               
No Effect on Rights Prior to Exercise.
Nothing in this Agreement shall convey upon the Company any rights with respect to, or deny Vicis of any rights as a securityholder
of, the Securities prior to the exercise of the Option and the transfer of the Securities pursuant to the terms and conditions
set forth herein.

11.               
Miscellaneous Provisions. All notices
required to be given pursuant to this Agreement shall be in writing and shall be hand-delivered or sent via overnight delivery
services to the applicable address set forth in the preamble of this Agreement, or to such other address as any such party may
have designated by like notice forwarded to the other party hereto. This Agreement, and any other document referenced herein, constitute
the entire understanding of the parties hereto with respect to the subject matter hereof, and no amendment, modification or alteration
of the terms hereof shall be binding unless the same be in writing, dated subsequent to the date hereof and duly approved and executed
by each of the parties hereto. Each party hereby covenants and agrees with the other party that at any time and from time to time
it will promptly execute and deliver to such other party such further assurances, instruments and documents and take such further
action as such other party may reasonably request in order to carry out the full intent and purpose of this Agreement. This Agreement,
and the application or interpretation thereof, shall be governed exclusively by its terms and by the laws of the State of New York.
Venue for all purposes shall be deemed to lie within New York, New York. The parties agree that, irrespective of any wording that
might be construed to be in conflict with this paragraph, this Agreement is one for performance in New York. The parties to this
Agreement agree that they waive any objection, constitutional, statutory or otherwise, to a New York court’s taking jurisdiction
of any dispute between them. By entering into this Agreement, the parties, and each of them understand that they might be called
upon to answer a claim asserted in a New York court. If a legal action is initiated by any party to this Agreement against another,
arising out of or relating to the alleged performance or non-performance of any right or obligation established hereunder, or any
dispute concerning the same, any and all fees, costs and expenses reasonably incurred by each successful party or its legal counsel
in investigating, preparing for, prosecuting, defending against, or providing evidence, producing documents or taking any other
action in respect of, such action shall be the joint and several obligation of and shall be paid or reimbursed by the unsuccessful
party or parties. EACH OF THE PARTIES HERETO IRREVOCABLY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY LAW, ANY RIGHT TO TRIAL BY JURY IN ANY SUCH LEGAL PROCEEDING. All representations and warranties contained
in this Agreement shall survive the closing and the consummation of the transactions contemplated hereby. This Agreement may not
be assigned by any party without the prior written consent of the other party. This Agreement shall be binding upon the parties
hereto and the successors and assigns of each party hereto. This Agreement may be executed in any one or more counterparts, all
of which shall be considered one and the same agreement. The headings in this Agreement are inserted for convenience only and shall
not constitute a part of this Agreement.

IN WITNESS WHEREOF, this Agreement has
been executed as of the date first above written.

 

 

COMPANY:

OPTIMIZERX
CORPORATION

 

By:
/s/ David Lester

Its:
CEO

 

VICIS:

VICIS
CAPITAL MASTER FUND

By:
Vicis Capital, LLC, its investment advisor

 

By:
/s/ Keith W. Hughes, CFO

 

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EXHIBIT A

to the Securities Redemption Option Agreement

by and between

Vicis Capital Master Fund and OptimizeRx Corporation

 

	Issuer	Type of Security	
        No. of

        Securities

	OptimizeRx Corporation	Series A Convertible Preferred Stock	35 shares
	OptimizeRx Corporation	Series B Convertible Preferred Stock	30 shares
	OptimizeRx Corporation	Common Stock	246,598 shares
	OptimizeRx Corporation	Series A Warrant to Purchase Common Stock	Warrant to purchase 6,000,000 shares
	OptimizeRx Corporation	Series B Warrant to Purchase Common Stock	Warrants to purchase 4,000,000 shares

 

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EXHIBIT B

to the Securities Redemption Option Agreement

by and between

Vicis Capital Master Fund and OptimizeRx Corporation

 

Form of Securities Redemption Agreement

 

SECURITIES REDEMPTION AGREEMENT

 

 

This SECURITIES REDEMPTION
AGREEMENT (the “Agreement”), dated ——————— is by and between Vicis Capital
Master Fund, a sub-trust of Vicis Capital Series Master Trust, a unit trust organized and existing under the laws of the Cayman
Islands, with a mailing address of 445 Park Avenue, Suite 1901, New York, New York 10022 (the “Seller”), and OptimizeRx
Corporation, a Nevada corporation maintaining a mailing address at 400 Water Street, Suite 200, Rochester, MI 48307 (the “Company”).

 

BACKGROUND INFORMATION

 

This Agreement sets forth
the terms and conditions upon which the Company is acquiring from the Seller and the Seller is selling and delivering to the Company,
free and clear of all liabilities, obligations, claims, liens and encumbrances, those securities issued by the Company set forth
on Exhibit “A” to this Agreement (the “Securities”). The Company is acquiring the Securities pursuant to
an option set forth in the Securities Option Agreement dated January __, 2013. In consideration of the mutual agreements contained
herein, the parties agree as follows:

 

OPERATIVE PROVISIONS

 

1.Background
Information. Each party hereto acknowledges and agrees that the foregoing background information is true and correct and
is hereby incorporated by reference and made a part of this Agreement.

 

2.Securities
to be Sold. Subject to the terms and conditions of this Agreement, at the Closing referred to in Section 5 hereof, the
Seller is selling and delivering to the Company good, valid, and marketable title to the Securities, by delivering to the Company
stock certificates, warrant certificates, or any other applicable instrument representing such Securities, duly endorsed in blank
or accompanied by one or more stock powers or instruments of transfer duly endorsed in blank, and in form for transfer satisfactory
to the Company. If any Securities are held in registered or electronic form, then the Seller will promptly electronically transfer
such Securities to the Company in accordance with written instructions provided by the Company.

 

3.Termination
of Security. Subject to the terms and conditions of this Agreement, at the Closing referred to in Section 5 hereof, the
Seller will deliver to the Company UCC termination statements and any other appropriate collateral releases in connection with
all securitiy agreements in which the Seller and the Company executed in connection with the Securities. The Seller further agrees
that upon payment of the Purchase Price (defined below), the Seller will deliver to the Company such other releases, termination
statements, and other agreements, in form and substance reasonably satisfactory to the Company, as the Company may reasonably request
in connection with the Seller’s release of its security interests and liens described above.

    	6

    	 

    
 

4.Purchase Price
of the Securities; Payment. The aggregate purchase price being paid by the Company to the Seller for the Securities is
Nine Million Dollars ($9,000,000) (the “Purchase Price”).

 

5.Closing.
The closing of the sale and purchase of the Securities is taking place on the date first written above, at the offices of legal
counsel for the Seller or at such other location as mutually agreed to by the parties (the “Closing”). At the Closing,
(a) the Seller is delivering to the Company the certificates or instruments evidencing the Securities in negotiable form or accompanied
by an executed stock power or instrument of transfer in a form acceptable to the Company and the documents referred to in Section
3 above, and (b) the Company is delivering to Vicis in cash, via wire transfer or certified check, an amount equal to the Purchase
Price. Each party is responsible for all fees and costs incurred by them or on their behalf in connection with the Closing.

 

6.Representations
and Warranties of the Seller. In order to induce the Company to enter into this Agreement and to consummate the transactions
contemplated hereby, the Seller represents and warrants to the Company that:

 

a.Authorization.
The Seller has duly executed and delivered this Agreement. When executed and delivered by the Seller, this Agreement will constitute
the valid and binding obligation of the Seller, enforceable in accordance with its terms except as the enforcement thereof may
be limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws generally affecting the rights of
creditors and subject to general equity principles.

 

b.Consent.
No consent, approval, or authorization of or registration, qualification, designation, declaration, or filing with any governmental
authority or private person or entity on the part of the Seller is required in connection with the execution and delivery of this
Agreement or the consummation of any other transaction contemplated hereby, except as may be required pursuant to the Securities
Exchange Act of 1934, as amended, and the rules and regulations thereunder.

 

c.No Contractual
Violation. Neither the execution, delivery nor performance of this Agreement by the Seller, including the consummation
by the Seller of the transactions contemplated hereby, constitutes a violation of or a default under, or conflict with, any term
or provision of any contract, commitment, indenture, or other agreement, or of any other private restriction of any kind, to which
the Seller is a party or by which it is otherwise bound.

 

d.Title to Securities.
The Seller has good and marketable title to the Securities free and clear of all liens, claims, encumbrances, and restrictions,
legal or equitable, of every kind, except for certain restrictions on transfer imposed by federal and state securities laws. The
Seller has full and unrestricted legal right, power, and authority to sell, assign, and transfer such Securities to the Company
without obtaining the consent or approval of any other person or governmental authority, and the delivery of such Securities to
the Company pursuant to this Agreement transfers valid title thereto, free and clear of all liens, encumbrances, claims, and restrictions
of every kind, except for certain restrictions on their further transferability imposed by federal and state securities laws.

 

7.Representations
and Warranties of the Company. The Company represents and warrants to, and covenants with, the Seller that:

 

a.Authorization.
The Company has duly executed and delivered this Agreement. When executed and delivered by the Company, this Agreement will constitute
the valid and binding obligation of the Company, enforceable in accordance with its terms, except as the enforcement thereof may
be limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws generally affecting the rights of
creditors and subject to general equity principles.

    	7

    	 

    
 

b.Consent.
No consent, approval, or authorization of or registration, qualification, designation, declaration, or filing with any governmental
authority or private person or entity on the part of the Company is required in connection with the execution and delivery of this
Agreement or the consummation of any other transaction contemplated hereby.

 

c.No Contractual
Violation. Neither the execution, delivery nor performance of this Agreement by the Company, including the consummation
by the Company of the transactions contemplated hereby, will constitute a violation of or a default under, or conflict with, any
term or provision of any contract, commitment, indenture, or other agreement, or of any other private restriction of any kind,
to which the Company is a party or by which it is otherwise bound.

 

8.Miscellaneous
Provisions. All notices required to be given pursuant to this Agreement shall be in writing and shall be hand delivered
or sent via overnight delivery services to the applicable address set forth in the preamble of this Agreement, or to such other
address as any such party may have designated by like notice forwarded to the other party hereto. This Agreement, and any other
document referenced herein, constitute the entire understanding of the parties hereto with respect to the subject matter hereof,
and no amendment, modification, or alteration of the terms hereof shall be binding unless the same be in writing, dated subsequent
to the date hereof and duly approved and executed by each of the parties hereto. The Seller hereby covenants and agrees with the
Company that, at any time and from time to time, it will promptly execute and deliver to the Company such further assurances, instruments,
and documents and take such further action as the Company may reasonably request in order to carry out the full intent and purpose
of this Agreement. This Agreement, and the application or interpretation thereof, shall be governed exclusively by its terms and
by the laws of the State of New York. Venue for all purposes shall be deemed to lie within New York, New York. The parties agree
that, irrespective of any wording that might be construed to be in conflict with this paragraph, this Agreement is one for performance
in New York. The parties to this Agreement agree that they waive any objection, constitutional, statutory, or otherwise, to a New
York court’s taking jurisdiction of any dispute between them. By entering into this Agreement, the parties, and each of them,
understand that they might be called upon to answer a claim asserted in a New York court. If a legal action is initiated by any
party to this Agreement against another, arising out of or relating to the alleged performance or non-performance of any right
or obligation established hereunder, or any dispute concerning the same, any and all fees, costs, and expenses reasonably incurred
by each successful party or its legal counsel in investigating, preparing for, prosecuting, defending against, or providing evidence,
producing documents or taking any other action in respect of, such action shall be the joint and several obligation of and shall
be paid or reimbursed by the unsuccessful party or parties. EACH OF THE PARTIES HERETO IRREVOCABLY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY LAW, ANY RIGHT TO TRIAL BY JURY IN ANY SUCH LEGAL PROCEEDING. All representations and warranties contained in this
Agreement shall survive the closing and the consummation of the transactions contemplated hereby. This Agreement may not be assigned
by the Company without the prior written consent of the Seller. This Agreement shall be binding upon the parties hereto and the
successors and assigns of each party hereto. This Agreement may be executed in any one or more counterparts, all of which shall
be considered one and the same agreement. The headings in this Agreement are inserted for convenience only and shall not constitute
a part of this Agreement.

 

 

[SIGNATURE PAGE TO EXHIBIT B TO FOLLOW]

 

    	8

    	 

    

 

IN WITNESS WHEREOF,
the parties hereto have each executed and delivered this Agreement as of the day and year first above written.

 

 

 

[EXHIBIT B – SIGNATURE PAGE]

 

 

Company:

OPTIMIZERX
CORPORATION

 

By:

Its:

 

VICIS:

VICIS
CAPITAL MASTER FUND

 

By:
Vicis Capital, LLC, its investment advisor

 

By:

    	9EX-10.1

Exhibit 10.1

EMPLOYMENT AGREEMENT

This Employment Agreement (“Agreement”) is entered into effective as of January 1,
2013 (the “Effective Date”), by and between Endeavour International Corporation, a Nevada
corporation (the “Company”), and William L. Transier (“Employee”).

WHEREAS, Employee and the Company have heretofore entered into that certain Employment
Agreement dated effective as of June 1, 2011 (the “Existing Agreement”); and

WHEREAS, the Company and Employee desire to enter into this Agreement to replace and supersede
the Existing Agreement in its entirety, effective as of the Effective Date;

NOW, THEREFORE, in consideration of the mutual covenants, representations, warranties, and
agreements contained herein, and for other valuable consideration, the receipt and adequacy of
which are hereby acknowledged, the parties agree as follows:

1. Effect of Agreement. Effective as of the Effective Date, this Agreement supersedes
and replaces any pre-existing employment agreements between the Company and Employee, including the
Existing Agreement.

2. Definitions. In addition to the terms defined in the body of this Agreement, for
purposes of this Agreement, the following capitalized words shall have the meanings indicated
below:

(a) “Board” shall mean the board of directors of the Company.

(b) “Code” shall mean the Internal Revenue Code of 1986, as amended.

(c) “Corporate Change” shall mean:

(i) a merger of the Company with another entity, a consolidation involving the Company,
or the sale of all or substantially all of the assets of the Company to another entity if,
in any such case, (1) the holders of equity securities of the Company immediately prior to
such transaction or event do not beneficially own immediately after such transaction or
event equity securities of the resulting entity entitled to 50% or more of the votes then
eligible to be cast in the election of directors generally (or comparable governing body) of
the resulting entity in substantially the same proportions that they owned the equity
securities of the Company immediately prior to such transaction or event or (2) the persons
who were members of the Board immediately prior to such transaction or event shall not
constitute at least a majority of the board of directors of the resulting entity immediately
after such transaction or event;

(ii) the dissolution or liquidation of the Company;

(iii) when any person or entity, including a “group” as contemplated by Section
13(d)(3) of the Securities Exchange Act of 1934, as amended, acquires or gains ownership or
control (including, without limitation, power to vote) of 30% or more of the combined voting
power of the outstanding securities of the Company;

(iv) individuals who, as of the day immediately preceding the Effective Date,
constitute members of the Board (the “Incumbent Board”) cease for any reason to
constitute at least a majority of the Board; provided, however, that any individual becoming
a director subsequent to such date whose election, or nomination for election by the
Company’s stockholders, was approved by a vote of at least a majority of the directors then
comprising the Incumbent Board shall be considered for purposes of this definition as though
such individual was a member of the Incumbent Board, but excluding, for these purposes, any
such individual whose initial assumption of office as a director occurs as a result of an
actual or threatened election contest with respect to the election or removal of directors
or other actual or threatened solicitation of proxies or consents by or on behalf of any
individual, entity or group other than the Board; or

(v) any other event that a majority of the Board, in its sole discretion, shall
determine constitutes a Corporate Change hereunder.

For purposes of the preceding sentence, (A) “resulting entity” in the context of a
transaction or event that is a merger, consolidation or sale of all or substantially all
assets shall mean the surviving entity (or acquiring entity in the case of an asset sale)
unless the surviving entity (or acquiring entity in the case of an asset sale) is a
subsidiary of another entity and the holders of common stock of the Company receive capital
stock of such other entity in such transaction or event, in which event the resulting entity
shall be such other entity, and (B) subsequent to the consummation of a merger or
consolidation that does not constitute a Corporate Change, the term “Company” shall refer to
the resulting entity and the term “Board” shall refer to the board of directors (or
comparable governing body) of the resulting entity.

(d) “Date of Termination” shall mean the date specified in the Notice of
Termination, provided that the Date of Termination shall be at least 15 days following the
date the Notice of Termination is given.

(e) “Good Reason” shall mean the occurrence of any of the following
circumstances without Employee’s express written consent unless such breach or circumstances
are, to the extent curable, cured within fifteen (15) days of receipt of the Notice of
Termination given in respect hereof:

(i) the material breach of any of the Company’s obligations under this Agreement;

(ii) the continued assignment to Employee of any duties inconsistent with the office of
Chairman, Chief Executive Officer and President;

(iii) the failure by the Company to pay to Employee any portion of Employee’s
compensation;

(iv) the failure by the Company to continue to provide Employee with benefits
substantially similar to those enjoyed by other executive officers who have entered into
similar employment agreements with the Company under any of the Company’s medical, health,
accident, and/or disability plans in which Employee was participating immediately prior to
such time;

(v) a change in the location of Employee’s principal place of employment by the Company
by more than 50 miles from the Company’s headquarters in Houston, Texas; or

(vi) the failure of the Company to obtain a satisfactory agreement from any successor
to assume and agree to perform this Agreement, as contemplated in Section 15 hereof.

In addition, the occurrence of a Corporate Change, shall constitute “Good Reason” hereunder,
but only if Employee terminates his employment within ninety (90) days following the
effective date of such Corporate Change; provided, however, that this sentence shall be
disregarded for purposes of determining Employee’s rights with respect to LTI Awards.

(f) “LTI Awards” shall mean all long-term incentive awards (other than Stock
Rights) granted to Employee by the Company or its subsidiaries under a “Long Term Incentive
Plan” or otherwise that are outstanding immediately prior to the date of Employee’s
termination of employment.

(g) “Misconduct” shall mean (i) the continued failure by Employee to
substantially perform his duties with the Company (other than any such failure resulting
from Employee’s incapacity due to physical or mental illness or any such actual or
anticipated failure after the issuance of a Notice of Termination by Employee for Good
Reason), after a written demand for substantial performance is delivered to Employee by the
Board, which demand specifically identifies the manner in which the Board believes that
Employee has not substantially performed his duties, and Employee fails to cure such failure
within a reasonable period of time after receipt of such demand, (ii) the engaging by
Employee in conduct which is demonstrably and materially injurious to the Company,
monetarily or otherwise (other than such conduct resulting from Employee’s incapacity due to
physical or mental illness or any such actual or anticipated conduct after the issuance of a
Notice of Termination by Employee for Good Reason), (iii) Employee’s conviction for the
commission of a felony or (iv) action by Employee toward the Company involving willful
dishonesty which is demonstrably and materially injurious to the Company.

(h) “Notice of Termination” shall mean a notice which, if by the Company and is
for Misconduct or Disability (as defined in Section 10(d) hereof), shall set forth in
reasonable detail the reason for such termination of Employee’s employment, or in the case
of resignation by Employee for Good Reason, shall specify in reasonable detail the basis for
such resignation.

(i) “Pro-Rata Annual Bonus” shall mean an amount equal to (i) Employee’s target
annual Bonus (as defined in Section 7 hereof) for the calendar year that includes the date
of Employee’s termination of employment as determined pursuant to Section 7 hereof,
multiplied by (ii) a fraction, the numerator of which is the number of days Employee was
actually employed hereunder during such calendar year and the denominator of which is the
number of days in such calendar year.

(j) “Stock Rights” shall mean all restricted stock and stock options granted to
Employee by the Company or its subsidiaries under a “Long Term Incentive Plan” or other
grant of restricted stock and stock options duly adopted by the Board or the Compensation
Committee thereof.

3. Employment. The Company hereby employs Employee, and Employee will hereby continue
his employment by the Company, on the terms and conditions set forth in this Agreement.

4. Term of Employment. Unless sooner terminated pursuant to other provisions hereof,
the Company agrees to employ Employee for the period beginning on the Effective Date and ending on
June 1, 2014. On June 1, 2014, and on each anniversary of such date thereafter, if Employee’s
employment under this Agreement has not terminated pursuant to other provisions hereof, then such
term of employment shall be extended automatically for an additional one-year period unless on or
before the date that is 60 days prior to the first day of any such extension period either party
gives written notice to the other that no such automatic extension shall occur. For purposes of
this Agreement, the period described in the first sentence of this Section 4 and any one-year
extension period described in the second sentence of this Section 4 shall be referred to as the
“Term.”

5. Employee’s Duties. During the Term, Employee shall serve as Chairman, Chief
Executive Officer and President, with such duties and responsibilities as may from time to time be
assigned to him by the Board, provided that such duties are consistent with the customary duties of
such position. During the Term, Employee shall serve as a member and Chairman of the Board.
Employee agrees to devote all of his business time, skill and attention to the business and affairs
of the Company and to use reasonable best efforts to perform faithfully and efficiently his duties
and responsibilities. Employee shall not, either directly or indirectly, enter into any business or
employment with or for any person, firm, association or corporation other than the Company during
the Term; provided, however, that Employee shall not be prohibited from making financial
investments in any other company or business, or, with notice to the Board, from serving on the
board of directors of any other company if such service does not materially interfere with the
performance of his duties or responsibilities hereunder. Employee shall at all times observe and
comply with all lawful directions and instructions of the Board.

6. Base Compensation. For services rendered by Employee under this Agreement, the
Company shall pay to Employee a base salary of $800,000.00 per annum (“Base Compensation”).
The Base Compensation is payable in accordance with the Company’s customary pay periods and
subject to customary withholdings. The amount of Base Compensation shall be reviewed by the Board
on an annual basis as of the close of each fiscal year of the Company and may be increased as the
Board may deem appropriate. In the event the Board (or, if established, the compensation committee
thereof) deems it appropriate to increase Employee’s annual base salary, said increased amount
shall thereafter be the “Base Compensation.” Employee’s Base Compensation, as increased from time
to time, may not thereafter be decreased unless agreed to by Employee. Nothing contained herein
shall prevent the Board from causing the Company to pay additional compensation to Employee in the
form of bonuses or otherwise during the Term.

7. Bonus. With respect to each full fiscal year during the Term, the Board in its
sole discretion may grant Employee a discretionary bonus (“Bonus”). The target bonus for
each year shall be equal to the Base Compensation; however, the Board may grant a maximum Bonus of
up to 200% of the Base Compensation payable in the form and in accordance with the
Company’s customary pay periods for its annual bonuses for its executives and subject to customary
withholdings.

8. Additional Benefits. In addition to the Base Compensation provided for in Section 6
herein, Employee shall be entitled to the following:

(a) Expenses. The Company shall, in accordance with any rules and policies that it
may establish from time to time for executive officers, reimburse Employee for business expenses
reasonably incurred in the performance of his duties. It is understood that Employee is authorized
to incur reasonable business expenses for promoting the business of the Company, including
reasonable expenditures for travel, lodging, meals and client or business associate entertainment.
Request for reimbursement for such expenses must be accompanied by appropriate documentation. Any
such reimbursement for such expenses shall be made by the Company upon or as soon as
practicable following receipt of supporting documentation reasonably satisfactory to the Company
(but in any event not later than the close of Employee’s taxable year following the taxable year in
which the expense is incurred by Employee). In no event shall any reimbursement be made to
Employee for such expenses incurred after the date that is one year after the date of Employee’s
termination of employment with the Company.

(b) Vacation. Employee shall be entitled to five (5) weeks of vacation per year,
without any loss of compensation or benefits. Employee shall not be entitled to compensation for,
or to carry forward, any unused vacation time.

(c) General Benefits. Employee shall be entitled to participate in the various
employee benefit plans or programs, if any, provided to the officers of the Company in general,
including but not limited to, health, dental, disability and life insurance plans, subject to the
eligibility requirements with respect to each of such benefit plans or programs, and such other
benefits or perquisites as may be approved by the Board during the Term. Nothing in this paragraph
shall be deemed to prohibit the Company from making any changes in any of the plans, programs or
benefits described in this Section 8, provided the change similarly affects all executive officers
of the Company similarly situated.

(d) Corporate Change. Upon the occurrence of a Corporate Change, Employee shall be
considered as immediately and totally vested in any and all Stock Rights outstanding as of the date
of such Corporate Change. The Company represents that all LTI Awards will vest in accordance with
their terms upon a Corporate Change. To the extent that any such LTI Awards do not contain terms
providing for vesting upon a Corporate Change, all such LTI Awards shall, upon a Corporate Change,
vest and become payable in the same manner as described in Section 10(a) hereof.

9. Confidential Information and Non-Solicitation. Employee, during the Term, will
have access to and become familiar with confidential information, secrets and proprietary
information concerning the business and affairs of the Company, its controlled subsidiaries and
other controlled entities, including client and customer information, information concerning their
products, patent rights and know-how, and other technical information, business strategies and
pricing information, and other confidential and/or proprietary information (collectively,
“Confidential Information”). Confidential Information shall not include (i) any information
that is or becomes generally available to the public other than as a result of Employee’s improper
or unauthorized disclosure of such information in violation of this Agreement or (ii) was within
Employee’s possession prior to its affiliation with the Company or its controlled subsidiaries or
other controlled entities (including his affiliation with Endeavour International Operating
Company, f/k/a NSNV, Inc. prior to its acquisition by the Company). Employee agrees as follows:

(a) During the Term or at any time following the termination of the employment relationship,
Employee will not, directly or indirectly, without the prior written consent of the Company
(1) disclose or permit the disclosure of any such Confidential Information, or (2) use, reproduce
or distribute, or make or permit any use, reproduction or distribution of, directly or indirectly,
any such Confidential Information, except for any disclosure, use, reproduction or distribution
that is required in the course of his employment with the Company, its controlled subsidiaries or
other controlled entities.

(b) If, during the Term or at any time following the termination of the employment
relationship, Employee is requested or required (by oral question or request for information or
documents, in any legal proceeding, interrogatory, subpoena, civil investigative demand, or similar
process) to disclose any Confidential Information, Employee agrees to notify the Company
immediately in writing of the request or requirement so that the Company may seek an appropriate
protective order or waive compliance with the provisions of this Section. If, in the absence of a
protective order or the receipt of a waiver under this Agreement, Employee is, on the advice of
counsel, compelled to disclose any Confidential Information to any tribunal or else stand liable
for contempt, Employee may disclose such Confidential Information to the tribunal; provided,
however, that Employee shall use his commercially reasonable best efforts to obtain a court order
or other assurance that confidential treatment will be accorded to such Confidential Information.

(c) Upon termination of employment of Employee, for whatever reason, Employee shall surrender
to the Company any and all documents, manuals, correspondence, reports, records and similar items
then or thereafter coming into the possession of Employee which contain any Confidential
Information of the Company or its controlled subsidiaries or other controlled entities.

(d) During the Term and for a period of twelve (12) months after the date of Employee’s
termination of employment, Employee shall not, directly or indirectly, employ or retain or solicit
for employment or arrange to have any other person, firm, or other entity employ or retain or
solicit for employment or otherwise participate in the employment or retention of any person who is
an employee of the Company or any of its affiliates.

(e) Employee recognizes and acknowledges that the obligations of Employee contained in Section
9 of this Agreement are reasonable and necessary to protect the legitimate business interests of
the Company, and that any breach or violation of any of the provisions of such Section is likely to
result in irreparable injury to the Company for which the Company would have no adequate remedy at
law. Employee agrees that if Employee shall breach or violate Section 9 of this Agreement, the
Company shall be entitled, if it so elects, to institute and prosecute proceedings at
law or in equity, including, but not limited to, a proceeding seeking injunctive relief, to
obtain damages with respect to such breach or violation, to enforce the specific performance of
Section 9 of this Agreement by Employee, or to enjoin Employee from engaging in any activity in
violation of Section 9 of this Agreement. Employee acknowledges that in the event of any such
breach or violation, the Company shall be entitled to preliminary and permanent injunctive relief,
without the necessity of proving actual damages or posting a bond, and to an equitable accounting
of all earnings, profits, and other benefits arising from any such breach or violation, which
rights shall be cumulative and in addition to any other rights or remedies to which the Company may
be entitled. Employee agrees that in the event of any such violation, an action may be commenced
for preliminary or permanent injunctive relief and other equitable relief in any federal or state
court of competent jurisdiction sitting in Harris County, Texas, or in any other court
of competent jurisdiction. Employee waives, to the fullest extent permitted by law, any objection
that Employee may now or hereafter have to such jurisdiction or to the laying of the venue of any
such suit, action, or proceeding brought in such a court and any claim that such suit, action or
proceeding has been brought in an inconvenient forum. Employee agrees that effective service of
process may be made upon Employee under the notice provisions contained in Section 13 of this
Agreement. Employee further agrees that the existence of any claim or cause of action against the
Company, whether predicated upon a breach or violation by the Company of this Agreement or any
other contract or agreement between Employee and the Company, shall not constitute or be asserted
as a defense to the enforcement by the Company of the provisions of this Section relating to the
Company’s right to injunctive or other equitable relief for Employee’s breach or violation of
Section 9 of this Agreement.

10. Termination. This Agreement may be terminated prior to the end of the Term as set
forth below:

(a) Discharge (other than for Misconduct or Disability). The Company may terminate
Employee’s employment for any reason whatsoever, including in the event of Employee’s Misconduct or
Disability (as defined below), upon written notice thereof delivered to Employee in accordance with
Section 10(g) (in the case of a termination in the event of Employee’s Misconduct or Disability)
and Section 13 hereof. In the event that Employee’s employment is terminated during the Term by
the Company for any reason other than his Misconduct or Disability, then (i) the Company shall pay
in a lump sum in cash to Employee, within fifteen (15) days following the date of Employee’s
termination of employment, an amount equal to the product of (A) Employee’s Base Compensation as in
effect immediately prior to Employee’s termination, multiplied by (B) three, (ii) for three years
following the date of Employee’s termination of employment, the Company, at its cost, shall provide
or arrange to provide Employee (and, as applicable, Employee’s dependents) with accident and group
health insurance benefits substantially similar to those which Employee (and Employee’s dependents)
were receiving immediately prior to Employee’s termination (if any); however, the welfare benefits
otherwise receivable by Employee pursuant to this clause (ii) shall be reduced to the extent
comparable welfare benefits are actually received by Employee (and/or Employee’s dependents) during
such period under any other employer’s welfare plan(s) or program(s), with Employee being obligated
to promptly disclose to the Company any such comparable welfare benefits, (iii) in addition to the
aforementioned compensation and benefits, the Company shall pay in a lump sum in cash to Employee
within fifteen (15) days following the date of Employee’s termination of employment an amount equal
to the product of (A) Employee’s average Bonus paid by the Company during the most recent two (2)
years immediately prior to the date of Employee’s termination of employment, multiplied by (B)
three, (iv) the Company shall pay Employee an amount equal to the Pro-Rata Annual Bonus (which
shall be paid in a lump sum on the date that is 60 days after the date of Employee’s termination of
employment), (v) Employee shall be considered as immediately and totally vested in any and all
outstanding Stock Rights, (vi) the portion of each LTI Award that is not then vested and which is
subject only to time-based vesting (which, for this purpose, shall not include awards made by the
Company under a “Cash Performance Award Agreement” or a “Relative Total Shareholder Return
Performance Unit Award Agreement”) shall vest and become immediately payable (without proration as
if Employee had remained employed through the end of the applicable vesting period), and (vii) the
portion of each LTI Award that is not then vested and which is subject to performance-based vesting
(which, for this purpose, shall include, without limitation, awards made by the Company under a
“Cash Performance Award Agreement” and a “Relative Total Shareholder Return Performance Unit Award
Agreement”) shall vest and become payable at the same time as payments are made to other
participants under the applicable programs (but in no event later than the 15th day of
the third calendar month following the calendar month in which the applicable performance period
ends), based on actual achievement of performance targets (without proration as if Employee had
remained employed through the end of the applicable performance period). The group health benefits
described in clause (ii) of the preceding sentence shall be provided through an arrangement that
satisfies the requirements of Sections 105 and 106 of the Code such that the benefits or
reimbursements under such arrangement are not includible in Employee’s income. The Company may
satisfy the requirement of the preceding sentence by providing such benefits through an arrangement
that requires the Company to impute income to Employee, provided that the Company will pay a tax
gross-up payment to Employee with respect to such imputed income for each taxable year for which
Employee has such imputed income, and such tax gross-up payment shall be made during the month of
January following each taxable year to which such imputed income relates (subject to the
requirements of Section 10(l) of this Agreement). Notwithstanding the foregoing, if the provision
of the benefits described in clause (ii) of this Section 10(a) cannot be provided in the manner
described above without penalty, tax or other adverse impact on the Company, then the Company and
Employee shall negotiate in good faith to determine an alternative manner in which the Company may
provide a substantially equivalent benefit to Employee without such adverse impact on the Company.

(b) Resignation for Good Reason. Employee shall be entitled to terminate his
employment for Good Reason. If Employee terminates his employment for Good Reason, then he shall
be entitled to the compensation and benefits provided in Section 10(a) hereof.

(c) Death. If Employee’s employment is terminated due to his death, the Company shall
have no obligations to Employee or his legal representatives with respect to this Agreement other
than the payment of any unpaid Base Compensation accrued hereunder as of the date of such
termination of employment, plus (i) payment of an amount equal to the Pro-Rata Annual Bonus (which
shall be paid in a lump sum on the date that is 60 days after the date of Employee’s termination of
employment), (ii) Employee shall be considered as immediately and totally vested in any and all
outstanding Stock Rights, (iii) the portion of each LTI Award that is not then vested and which is
subject only to time-based vesting (which, for this purpose, shall not include awards made by the
Company under a “Cash Performance Award Agreement” or a “Relative Total Shareholder Return
Performance Unit Award Agreement”) shall vest and become immediately payable (without proration),
and (iv) the portion of each LTI Award that is not then vested and which is subject to
performance-based vesting (which, for this purpose, shall include, without limitation, awards made
by the Company under a “Cash Performance Award Agreement” and a “Relative Total Shareholder Return
Performance Unit Award Agreement”) shall vest and become payable at the same time as payments are
made to other participants under the applicable programs (but in no event later than the
15th day of the third calendar month following the calendar month in which the
applicable performance period ends), based on actual achievement of performance targets (without
proration as if Employee had remained employed through the end of the applicable performance
period).

(d) Disability. If Employee shall have been absent from the full-time performance of
Employee’s duties with the Company for ninety (90) consecutive calendar days as a result of
Employee’s incapacity due to physical or mental illness, Employee’s employment may be terminated by
the Company for “Disability” and Employee shall not be entitled to further compensation
pursuant to this Agreement, except that Employee shall receive the compensation and benefits
provided in Section 10(c) hereof.

(e) Resignation (other than for Good Reason). Employee may resign, including by
reason of retirement, his position at any time by providing written notice of resignation to the
Company in accordance with Section 13 hereof. In the event of such resignation, except in the case
of resignation for Good Reason, Employee shall not be entitled to further compensation pursuant to
this Agreement other than the payment of any unpaid Base Compensation accrued hereunder as of the
date of Employee’s resignation plus an amount equal to the Pro-Rata Annual Bonus. The Pro-Rata
Annual Bonus shall be paid in a lump sum on the date that is 60 days after the date of Employee’s
termination of employment.

(f) Discharge for Misconduct. In the event Employee’s employment is terminated
because of Misconduct, the Company shall have no obligations pursuant to this Agreement after the
Date of Termination other than the payment of any unpaid Base Compensation accrued hereunder
through the Date of Termination. In the event Employee’s employment is terminated for Misconduct,
the Company may refuse to allow Employee access to the Company’s offices (other than to allow
Employee to collect his personal belongings under the Company’s supervision) prior to the Date of
Termination.

(g) Notice of Termination. Any purported termination of Employee’s employment by the
Company under Sections 10(d) or 10(f), or by Employee under Section 10(b), shall be communicated by
written Notice of Termination to the other party hereto in accordance with Section 13 hereof. A
Notice of Termination given by Employee pursuant to Section 10(b) shall be effective even if given
after the receipt by Employee of notice that the Board has set a meeting to consider terminating
Employee for Misconduct. Any purported termination for which a Notice of Termination is required
which is not effected pursuant to this Section 10(g) shall not be effective.

(h) Termination of Employment. Notwithstanding anything herein to the contrary, (i)
for purposes of this Section 10, “termination of employment” shall mean Employee’s “separation from
service” as defined in Treasury Regulation Section 1.409A-1(h), including the default presumptions
thereof, and (ii) the Board shall have the sole power and authority to terminate the employment of
Employee on behalf of the Company.

(i) Mitigation. Employee shall not be required to mitigate the amount of any payment
provided for in this Section 10 by seeking other employment or otherwise, nor (except as set forth
in Section 10(a)(ii)) shall the amount of any payment provided for in this Agreement be reduced by
any compensation earned or benefits received by Employee as a result of employment by another
employer.

(j) Parachute Payments. Notwithstanding anything to the contrary in this Agreement,
if Employee is a “disqualified individual” (as defined in Section 280G(c) of the Code), and the
payments and benefits provided for in this Agreement, together with any other payments and benefits
which Employee has the right to receive from the Company or any of its affiliates, would constitute
a “parachute payment” (as defined in Section 280G(b)(2) of the Code), then the payments and
benefits provided for in this Agreement shall be either (i) reduced (but not below zero) so that
the present value of such total amounts and benefits received by Employee from the Company and its
affiliates will be one dollar ($1.00) less than three times Employee’s “base amount” (as defined in
Section 280G(b)(3) of the Code) and so that no portion of such amounts and benefits received by
Employee shall be subject to the excise tax imposed by Section 4999 of the Code or (ii) paid in
full, whichever produces the better net after-tax position to Employee (taking into account any
applicable excise tax under Section 4999 of the Code and any other applicable taxes). The
reduction of payments and benefits hereunder, if applicable, shall be made by reducing, first,
payments or benefits to be paid in cash hereunder in the order in which such payment or benefit
would be paid or provided (beginning with such payment or benefit that would be made last in time
and continuing, to the extent necessary, through to such payment or benefit that would be made
first in time) and, then, reducing any benefit to be provided in-kind hereunder in a similar order.
The determination as to whether any such reduction in the amount of the payments and benefits
provided hereunder is necessary shall be made by the Company in good faith. If a reduced payment
or benefit is made or provided and through error or otherwise that payment or benefit, when
aggregated with other payments and benefits from the Company (or its affiliates) used in
determining if a “parachute payment” exists, exceeds one dollar ($1.00) less than three times
Employee’s base amount, then Employee shall immediately repay such excess to the Company upon
notification that an overpayment has been made. Nothing in this Section 10(j) shall require the
Company to be responsible for, or have any liability or obligation with respect to, Employee’s
excise tax liabilities under Section 4999 of the Code.

(k) Deemed Resignations. Unless otherwise agreed to in writing by the Company and
Employee prior to the termination of Employee’s employment, any termination of Employee’s
employment shall constitute (i) an automatic resignation of Employee as an officer of the Company
and each affiliate of the Company and (ii) an automatic resignation of Employee from the Board,
from the board of directors of any affiliate of the Company and from the board of directors or
similar governing body of any corporation, limited liability entity or other entity in which the
Company or any affiliate holds an equity interest and with respect to which board or similar
governing body Employee serves as the Company’s or such affiliate’s designee or other
representative. Nothing herein shall be deemed to limit the power of the shareholders of the
Company to at any time remove any director, including, without limitation, Employee, in accordance
with applicable law.

(l) Section 409A of the Code. Notwithstanding any provision of this Section 10 to the
contrary, if all or any portion of the benefits provided in this Section 10 is determined to be
“nonqualified deferred compensation” subject to Section 409A of the Code, and the Company
determines that Employee is a “specified employee” as defined in Section 409A(a)(2)(B)(i) of the
Code and the regulations and other guidance issued thereunder, then such benefits (or portion
thereof) shall be paid on the first day of the seventh month following Employee’s termination of
employment or as soon as administratively practicable thereafter. If any provision of this
Agreement does not satisfy the requirements of Section 409A of the Code, then such provision shall
nevertheless be applied in a manner consistent with those requirements. Any payments or
reimbursements of any expenses provided for under this Agreement shall be made in accordance with
Treasury Regulation Section 1.409A-3(i)(1)(iv).

(m) Release. Notwithstanding the provisions of Sections 10(a), (b), (d) and (e)
hereof, as a condition to the receipt of any severance compensation and benefits pursuant to such
Sections (other than unpaid Base Compensation accrued hereunder as of the date of Employee’s
termination of employment), Employee must first execute a release and agreement, in a form
reasonably satisfactory to the Company, which (i) shall release and discharge the Company and its
affiliates, and their officers, directors, employees and agents from any and all claims or causes
of action of any kind or character, including but not limited to all claims or causes of action
arising out of Employee’s employment with the Company or its affiliates or the termination of such
employment, and (ii) must be effective and irrevocable by the earlier of (x) the 58th day after the
termination of Employee’s employment or (y) the day immediately preceding the first day any cash
severance compensation payment is due to be paid to Employee under the provisions of such Sections
(which due date shall be determined after taking into consideration any payment delay required
under Section 10(l) hereof). The Company will provide the release and agreement described in the
preceding sentence to Employee within five days following the date of Employee’s termination of
employment.

11. Non-exclusivity of Rights. Nothing in this Agreement shall prevent or limit
Employee’s continuing or future participation in any benefit, bonus, incentive, or other plan or
program provided by the Company or any of its affiliated companies and for which Employee may
qualify, nor shall anything herein limit or otherwise adversely affect such rights as Employee may
have under any Stock Rights or LTI Awards with the Company or any of its affiliated companies.

12. Assignability. The obligations of Employee hereunder are personal and may not be
assigned or delegated by him or transferred in any manner whatsoever, nor are such obligations
subject to involuntary alienation, assignment or transfer. The Company shall have the right to
assign this Agreement and to delegate all rights, duties and obligations hereunder, either in whole
or in part, to any parent, affiliate, successor or subsidiary organization or company of the
Company, so long as the obligations of the Company under this Agreement remain the obligations of
the Company.

13. Notice. For the purpose of this Agreement, notices and all other communications
provided for in this Agreement shall be in writing and shall be deemed to have been duly given when
delivered or mailed by United States registered mail, return receipt requested, postage prepaid,
addressed to the Company at its principal office address, directed to the attention of the Board
with a copy to the Secretary of the Company, and to Employee at Employee’s residence address on the
records of the Company or to such other address as either party may have furnished to the other in
writing in accordance herewith except that notice of change of address shall be effective only upon
receipt.

14. Validity. The invalidity or unenforceability of any provision of this Agreement
shall not affect the validity or enforceability of any other provision of this Agreement, which
shall remain in full force and effect.

15. Successors; Binding Agreement.

(a) The Company will require any successor (whether direct or indirect, by purchase, merger,
consolidation or otherwise) to all or substantially all of the business and/or assets of the
Company to expressly assume and agree to perform this Agreement in the same manner and to the same
extent that the Company would be required to perform it if no such succession had taken place. As
used herein, the term “Company” shall include any successor to its business and/or assets as
aforesaid which executes and delivers the agreement provided for in this Section 15 or which
otherwise becomes bound by all terms and provisions of this Agreement by operation of law.

(b) This Agreement and all rights of Employee hereunder shall inure to the benefit of and be
enforceable by Employee’s personal or legal representatives, executors, administrators, successors,
heirs, distributees, devisees and legatees. If Employee should die while any amounts would be
payable to him hereunder if he had continued to live, all such amounts, unless otherwise provided
herein, shall be paid in accordance with the terms of this Agreement to Employee’s devisee,
legatee, or other designee or, if there be no such designee, to Employee’s estate.

16. Withholding Taxes.

(a) Tax Withholding. The Company shall have the power and the right to deduct or
withhold from any benefits payable under this Agreement an amount sufficient to satisfy federal,
state, and local taxes, domestic or foreign, required by law or regulation to be withheld.

(b) Share Withholding. With respect to tax withholding required upon any taxable
event arising as a result of any stock awards pursuant to this Agreement, Employee may elect, to
satisfy the withholding requirement, in whole or in part, by having the Company withhold shares
having a fair market value on the date the tax is to be determined equal to the minimum statutory
total tax which could be imposed on the transaction. All such elections shall be made in writing,
signed by Employee, and shall be subject to any restrictions or limitations that the Company, in
its discretion, deems appropriate. Any fraction of a share required to satisfy such obligation
shall be disregarded and Employee shall instead pay the amount due in cash.

17. No Restraints. As an inducement to the Company to enter into this Agreement,
Employee represents and warrants that he is not a party to any other agreement or obligation for
personal services, and that there exist no impediments or restraints, contractual or otherwise, on
Employee’s powers right or ability to enter into this Agreement and to perform his duties and
obligations hereunder.

18. Miscellaneous. No provision of this Agreement may be modified, waived or
discharged unless such waiver, modification or discharge is agreed to in writing and signed by
Employee and such officer of the Company as may be specifically authorized by the Board. No waiver
by either party hereto at any time of any breach by the other party hereto of, or in compliance
with, any condition or provision of this Agreement to be performed by such other party shall be
deemed a waiver of similar or dissimilar provisions or conditions at the same or at any prior or
subsequent time. This Agreement is an integration of the parties’ agreement; no agreement or
representations, oral or otherwise, express or implied, with respect to the subject matter hereof
have been made by either party, except those which are set forth expressly in this Agreement. THE
VALIDITY, INTERPRETATION, CONSTRUCTION AND PERFORMANCE OF THIS AGREEMENT SHALL BE GOVERNED BY THE
LAWS OF THE STATE OF TEXAS.

19. Counterparts. This Agreement may be executed in one or more counterparts, each of
which shall be deemed to be an original but all of which together will constitute one and the same
instrument.

20. Arbitration. Either party may elect that any dispute or controversy arising under
or in connection with this Agreement be settled by arbitration in Houston, Texas in accordance with
the rules of the American Arbitration Association then in effect. If the parties cannot mutually
agree on an arbitrator, then the arbitration shall be conducted by a three arbitrator panel, with
each party selecting one arbitrator and the two arbitrators so selected selecting a third
arbitrator. The findings of the arbitrator(s) shall be final and binding, and judgment may be
entered thereon in any court having jurisdiction. The findings of the arbitrator(s) shall not be
subject to appeal to any court, except as otherwise provided by applicable law. The arbitrator(s)
may, in his or her (or their) own discretion, award legal fees and costs to the prevailing party.

[Signature Page Follows]

1

IN WITNESS WHEREOF, the parties have executed this Agreement on January 7, 2013, effective for
all purposes as of the Effective Date.

ENDEAVOUR INTERNATIONAL CORPORATION

	 	 	 
	By:

Name:

Title:
	 	/s/ John B. Connally, III

John B. Connally, III

Chairman, Compensation Committee

and Lead Director

EMPLOYEE:

/s/ William L. Transier

William L. Transier

2

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