QuickLinks
 -- Click here to rapidly navigate through this document

EXHIBIT 10.11.13  


 
  ARCH CAPITAL GROUP LTD. Restricted Share Unit Agreement    
    



        THIS AGREEMENT, dated as of April 19, 2004, between Arch Capital Group Ltd. (the "Company"), a Bermuda company, and Ralph E. Jones III (the
"Employee"). 


        WHEREAS,
the Employee has been granted the following award in connection with his retention as an employee and as compensation for services to be rendered; and the following terms
reflect the Company's 2002 Long Term Incentive and Share Award Plan (the "Plan"); 


        NOW,
THEREFORE, in consideration of the premises and mutual covenants contained herein, the parties hereto agree as follows. 



        1.    Award of Share Units.    Pursuant to the provisions of the Plan, the terms of which are incorporated herein by
reference, the Employee is hereby awarded 50,000 Restricted Share Units (the "Award"), subject to the terms and conditions herein set forth. Capitalized terms used herein and not defined shall have
the meanings set forth in the Plan. In the event of any conflict between this Agreement and the Plan, the Plan shall control. 


        2.    Terms and Conditions.    It is understood and agreed that the Award of Restricted Share Units evidenced hereby
is subject to the following terms and conditions: 




        (a)    Vesting of Award.    Subject to Section 2(b) below and the other terms and conditions of this Agreement,
this Award shall become vested in two equal installments on July 1, 2004 and July 1, 2005. Unless otherwise provided by the Company, all amounts receivable in connection with any
adjustments to the Shares under Section 4(c) of the Plan or Section 2(e) below shall be subject to the vesting schedule in this Section 2(a). Notwithstanding the foregoing, if a
Change in Control occurs, then the Restricted Share Units shall become immediately vested in full. 





        For
purposes of this Agreement, a "Change in Control" shall be deemed to occur if any "person" (within the meaning of the Securities Exchange Act of 1934, as amended (the "Exchange
Act")), other than a Permitted Person, is or becomes the "beneficial owner" (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of Voting Securities
representing more than 50% of the total voting power of all then outstanding Voting Securities. 


        "Permitted
Persons" means (A) the Company; (B) any Related Party; (C) Hellman & Friedman or any of its subsidiaries or investment funds managed or controlled
by Hellman & Friedman; (D) Warburg Pincus or any of its subsidiaries or any investment funds managed or controlled by Warburg Pincus or any of its subsidiaries; or (E) any group
(as defined in Rule 13b-3 under the Exchange Act) comprised of any or all of the foregoing. 


        "Related
Party" means (A) a majority-owned subsidiary of the Company; (B) a trustee or other fiduciary holding securities under an employee benefit plan of the Company or
any majority-owned subsidiary of the Company; or (C) any entity, 50% or more of the voting power of which is owned directly or indirectly by the stockholders of the Company in substantially the
same proportion as their ownership of Voting Securities immediately prior to the transaction. 


        "Voting
Security" means any security of the Company which carries the right to vote generally in the election of directors. 




        (b)    Termination of Service; Forfeiture of Unvested Share Units.     Except as otherwise set forth in
Section 2(a) above, in the event the Employee ceases to be an employee of the Company prior to the date the Restricted Share Units otherwise become vested (i) due to his or her death or
Permanent Disability (as defined in the Employment Agreement between the Employee and Arch Insurance Group Inc., dated as of June 4, 2003 (the "Employment Agreement") or (ii) due
to termination (A) by the Company not for Cause (as defined in the Employment Agreement) or (B) by the Employee for Good Reason (as defined in the Employment Agreement), a number of any
unvested Restricted Share Units subject to the 









 


Award
shall become vested in full at the time of such termination of service determined by (A) multiplying the total number of Restricted Share Units subject to the Award by a fraction, the
numerator of which is the number of months elapsed since the July 1, 2003 and the denominator of which is 24, and (B) subtracting from such product the number of Restricted Share Units
that have previously vested prior to such termination of service (if any). If the Employee ceases to be an Employee of the Company for any other reason prior to the date the Restricted Share Units
become vested, the unvested Restricted Share Units shall be forfeited by the Employee and become the property of the Company. For purposes of this Agreement, service with any of the Company's
Subsidiaries (as defined in the Plan) shall be considered to be service with the Company. 


        (c)    Distribution of Shares.    At the time the Employee ceases to be an Employee of the Company for any reason, the
Company shall distribute to the Employee (or his or her heirs in the event of the Employee's death) a number of Shares equal to the number of vested Restricted Share Units then held by the Employee,  provided,
however, that in event of (i) a Change in Control or (ii) a termination by the Company not for Cause or by the Employee for Good
Reason, the Shares subject to the Award shall not be distributed to the Employee prior to the date on which the Restricted Share Units are scheduled to vest pursuant to Section 2(a) above,
except that a number of Shares having a fair market value equal to the amount of any income and employment taxes imposed upon distributions of the Shares shall be distributed to the Employee upon such
termination solely for the purpose of funding any such income and employment taxes. 


        (d)    Rights and Restrictions.    The Restricted Share Units shall not be transferable, other than pursuant to will
or the laws of descent and distribution. Prior to vesting of the Restricted Share Units and delivery of the Shares to the Employee following his termination of employment, the Employee shall not have
any rights or privileges of a shareholder as to the Shares subject to the Award. Specifically, the Employee shall not have the right to receive dividends or the right to vote such Shares prior to
vesting of the Award and delivery of the Shares. 


        (e)    Adjustments for Recapitalization and Dividends.    In the event that, prior to the distribution of Shares
pursuant to Section 2(c) above, any dividend in Shares, recapitalization, Share split, reverse split, reorganization, merger, consolidation, spin-off, combination, repurchase, or
share exchange, or other such change affects the Shares such that they are increased or decreased or changed into or exchanged for a different number or kind of shares, other securities of the Company
or of another corporation or other consideration, then in order to maintain the proportionate interest of the Employee and preserve the value of the Award, there shall automatically be substituted for
each Share subject to the Award the number and kind of shares, other securities or other consideration (including cash) into which each outstanding Share shall be changed or for which each such Share
shall be exchanged. 


        (f)    Dividend Equivalents.    As of each date on which a cash dividend is paid on Shares, there shall be granted to
the Employee that number of additional Restricted Share Units (including fractional units) determined by (i) multiplying the amount of such dividend per Share by the number of Restricted Share
Units held by the Employee, and (ii) dividing the total so determined by the Fair Market Value of a Share on the date of payment of such cash dividend. The Restricted Share Units granted
pursuant to
this Section 2(f) will have the same terms and conditions (including vesting dates) as the Restricted Share Units with respect to which they are granted. 


        (g)    No Right to Continued Employment.    This Award shall not confer upon the Employee any right with respect to
continuance of employment by the Company nor shall this 




2







 





Award
interfere with the right of the Company to terminate the Employee's employment at any time. 





        3.    Transfer of Shares.    The Shares delivered hereunder, or any interest therein, may be sold, assigned, pledged,
hypothecated, encumbered, or transferred or disposed of in any other manner, in whole or in part, only in compliance with the terms, conditions and restrictions as set forth in the governing
instruments of the Company, applicable United States federal and state securities laws or any other applicable laws or regulations and the terms and conditions hereof. 


        4.    Expenses of Issuance of Shares.    The issuance of stock certificates hereunder shall be without charge to the
Employee. The Company shall pay, and indemnify the Employee from and against any issuance, stamp or documentary taxes (other than transfer taxes) or charges imposed by any governmental body, agency or
official (other than income taxes) or by reason of the issuance of Shares. 



        5.    Withholding.    The Employee shall pay to the Company or make arrangements satisfactory to the Committee
regarding payment of any federal, state or local taxes of any kind required by law to be withheld with respect to the Award and the Company shall, to the extent permitted or required by law, have the
right to deduct from any payment of any kind otherwise due to the Employee, federal, state and local taxes of any kind required by law to be withheld. 


        6.    References.    References herein to rights and obligations of the Employee shall apply, where appropriate, to
the Employee's legal representative or estate without regard to whether specific reference to such legal representative or estate is contained in a particular provision of this Agreement. 


        7.    Notices.    Any notice required or permitted to be given under this Agreement shall be in writing and shall be
deemed to have been given when delivered personally or by courier, or sent by certified or registered mail, postage prepaid, return receipt requested, duly addressed to the party concerned at the
address indicated below or to such changed address as such party may subsequently by similar process give notice of: 



If
to the Company: 


Arch
Capital Group Ltd.:

Wessex House, 4th Floor

45 Reid Street

Hamilton HM 12 Bermuda

Attn.: Secretary 


If
to the Employee: 




        To
the last address delivered to the Company by the Employee in the manner set forth herein. 


        8.    Governing Law.    This Agreement shall be governed by and construed in accordance with the laws of New York,
without giving effect to principles of conflict of laws. 



        9.    Entire Agreement.    This Agreement and the Plan constitute the entire agreement among the parties relating to
the subject matter hereof, and any previous agreement or understanding among the parties with respect thereto is superseded by this Agreement and the Plan. Without limiting the foregoing, this
Agreement replaces and supersedes in its entirety the Restricted Share Agreement, dated as of July 1, 2003, between the Company and the Employee, which shall cease to be in effect. 



        10.    Counterparts.    This Agreement may be executed in two counterparts, each of which shall constitute one and the
same instrument. 


3







 

        IN
WITNESS WHEREOF, the undersigned have executed this Agreement as of the date first above written. 



	 
	 	 
	 	 

	 	 	ARCH CAPITAL GROUP LTD.
	

 	
 	

By:	
 	

/s/  CONSTANTINE IORDANOU      

	

 	
 	

/s/  RALPH E. JONES III      
 Ralph E. Jones III




4











QuickLinks


ARCH CAPITAL GROUP LTD. Restricted Share Unit Agreement