Document:

EX-10.1

 Exhibit 10.1 
 RETIREMENT AGREEMENT AND RELEASE 
 This Retirement Agreement and Release (the
“Agreement”) is made by and between Kenneth T. Joyce (“Employee”) and Amkor Technology, Inc. (the “Company”) (jointly referred to as the “Parties”): 

RECITALS 
 WHEREAS,
Employee has been employed by the Company as its President and Chief Executive Officer and has served as a member of its Board of Directors; 

WHEREAS, Employee will retire from the Company and resign from its Board of Directors effective as of May 8, 2013 (the “Retirement Date”);
and 
 WHEREAS, the Company desires to retain the services of Employee as a consultant for a period of 12 months following the Retirement Date
and Employee desires to provide such services. 
 NOW THEREFORE, in consideration of the mutual promises made herein, intending to be legally
bound, the Parties hereby agree as follows: 
 COVENANTS 
 1.     Consideration. The Company agrees to pay Employee a lump sum of $1,450,000, less applicable withholdings. This payment will be made to Employee no later than the
first normal payroll date of the Company subsequent to the Effective Date (as defined below). Additionally, subject to Employee’s provision of the Consulting Services (as defined below) and continuing compliance with the confidentiality,
non-competition, non-solicitation and non-disparagement provisions set forth herein or incorporated herein by reference, the Company shall continue to pay Employee his base salary at a rate of $725,000 per year during the 12 month period commencing
on the Retirement Date, in accordance with the Company’s normal payroll practices. 
 2.     Consulting
Services. During the 12 month period beginning on the Retirement Date (the “Consulting Term”), Employee shall provide such services, advice and assistance to the Company and its affiliates as the Company’s Board of Directors or
President and Chief Executive Officer may reasonably request, consistent with Employee’s knowledge and prior experience as President and Chief Executive Officer of the Company (the “Consulting Services”). Employee agrees to provide
the Consulting Services as a condition to his receipt of the payments described in Section 1 and shall not be entitled to any additional compensation for the Consulting Services. Employee shall perform the Consulting Services as an independent
contractor, not as an employee or agent of the Company, and shall have no power or authority to contract for, or bind, the Company in any manner. Employee acknowledges and agrees that, except as provided in Section 4 below, Employee shall not
be entitled to participate in any benefit plans or programs of the Company subsequent to the Retirement Date. During the Consulting Term, the Company shall reimburse Employee for all reasonable and necessary expenses incurred by Employee in
connection with the performance of the Consulting Services, in accordance with the Company’s expense reimbursement policies and procedures as in effect from time to time. 
  

 3.     Stock. As of the Retirement Date, all restrictions shall lapse with
respect to the unvested portions of the restricted stock awards granted to Employee on February 3, 2010 and February 14, 2011, as provided in the applicable award agreements, such that the aggregate number of shares that shall vest under
such restricted stock award agreements shall equal 120,000 shares less the 39,089 shares previously withheld by the Company to pay applicable withholding taxes thereon. As of the Retirement Date, Employee shall forfeit all 60,000 shares of
restricted stock granted to Employee on November 11, 2012, as provided in the applicable award agreement, with no compensation due therefor. Employee’s vested stock options shall remain exercisable in accordance with the terms of the
applicable award agreements as set forth in the stock option closing statement and restricted share reconciliation statement attached hereto. 

4.     Benefits. Employee’s participation in the Company’s employee benefit plans, programs and arrangements
(including, but not limited to, the accrual of vacation and paid time off) shall cease on the Retirement Date. Notwithstanding the foregoing, the Company shall pay the applicable COBRA premiums for Employee and his eligible dependents for coverage
under the Company’s group medical and dental plans for the 12 month period beginning on the Retirement Date, if and to the extent such coverage is timely elected. 
 5.    Confidential Information. Employee shall maintain the confidentiality of all of the Company’s confidential and proprietary information according to the terms of his
Patents and Trade Secrets Agreement (“Employee Confidentiality Agreement”) dated August 4, 1997, which is incorporated herein by reference. Employee shall also return to the Company all of the Company’s property, including all
confidential and proprietary information, and all documents and information that Employee obtained in connection with his employment with the Company, on or before the Retirement Date of this Agreement or such later date as the Company may specify,
not to exceed the expiration or earlier termination of the Consulting Term. 
 6.    Payment of Accrued Benefits. The
Company shall pay Employee all unpaid salary, accrued vacation, paid time off, bonuses and any and all other benefits or compensation that were earned, accrued or vested but unpaid as of the Retirement Date (the “Accrued Benefits”) on the
first normal payroll date of the Company following the Retirement Date or such other time as may be specified in the applicable plan, agreement or other arrangement governing the terms of the Accrued Benefits. 

7.    Release of Claims. Employee acknowledges that the foregoing consideration represents full and final payment and accord
and satisfaction of all claims by Employee against the Company, and is in excess of what Employee would otherwise be entitled by virtue of his employment. Employee releases, acquits, and forever discharges the Company and its current and former:
officers, directors, employees, agents, investors, attorneys, shareholders, administrators, affiliates, divisions, subsidiaries, predecessor and successor corporations and assigns (the “Releasees”). Employee, on his own behalf, and on
behalf of his respective heirs, family members, executors, agents, and assigns, hereby fully and forever releases the Company and the other Releasees from, and agrees not to sue concerning, any claim, duty, obligation or

  
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cause of action relating to any matters of any kind, whether presently known or unknown, suspected or unsuspected, that Employee may possess arising from any omissions, acts or facts that have
occurred up until and including the Effective Date of this Agreement including, without limitation: 
 (a) any and all claims
relating to or arising from Employee’s employment with the Company, or the termination of that employment; 
 (b) any and
all claims under the law of any jurisdiction, including, but not limited to, wrongful discharge of employment; constructive discharge from employment; termination in violation of public policy; discrimination; breach of contract, both express and
implied; breach of a covenant of good faith and fair dealing, both express and implied; promissory estoppel; negligent or intentional infliction of emotional distress; negligent or intentional misrepresentation; negligent or intentional interference
with contract or prospective economic advantage; unfair business practices; defamation; libel; slander; negligence; personal injury; assault; battery; invasion of privacy; false imprisonment; and conversion; 

(c) any and all claims for violation of any federal, state or municipal statute, including, but not limited to, Title VII of the Civil
Rights Act of 1964; the Civil Rights Act of 1991; the Age Discrimination in Employment Act of 1967; the Americans with Disabilities Act of 1990; the Employee Retirement Income Security Act of 1974; the Worker Adjustment and Retraining Notification
Act; the Older Workers Benefit Protection Act; the Sarbanes-Oxley Act of 2002; the Family and Medical Leave Act, as amended; the Arizona Civil Rights Act, as amended; the Arizona Employment Protection Act, as amended, Arizona wage statutes, the
Arizona Medical Marijuana Law, or any unasserted claims for workers’ compensation; 
 (d) any and all claims for violation
of the federal, or any state, constitution; 
 (e) any and all claims arising out of any other laws and regulations relating to
employment or employment discrimination; 
 (f) any claim for any loss, cost, damage, or expense arising out of any dispute over
the non-withholding or other tax treatment of any of the proceeds received by Employee as a result of this Agreement; and 
 (g)
any and all claims for attorneys’ fees and costs. 
 Nothing in this Agreement shall be interpreted or applied in a manner
that affects or limits Employee’s otherwise lawful ability to bring an administrative charge with, to participate in an investigation conducted by, or to participate in a proceeding involving the U.S. Equal Employment Opportunity Commission or
other comparable state or local administrative agency. However, Employee specifically agrees that the consideration provided to him in this Agreement represents full and complete satisfaction of any monetary relief or award that could be sought or
awarded to him in any administrative action (including any proceedings before the U.S. Equal Employment Opportunity Commission or any comparable state or local agency) arising from events related to his employment with the Company or the termination
thereof. 

  
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 The Company and Employee agree that the release set forth in this section shall be and
remain in effect in all respects as a complete general release as to the matters released. This release does not extend to any obligations incurred under this Agreement. 
 8.    Acknowledgement of Waiver of Claims Under ADEA. Employee acknowledges that he is waiving and releasing any rights he may have under the Age Discrimination in Employment
Act of 1967 (“ADEA”) and the Older Workers Benefit Protection Act (“OWBPA”), and that this waiver and release is knowing and voluntary. Employee and the Company agree that this waiver and release does not apply to any rights or
claims that may arise under the ADEA and/or OWBPA after the Effective Date of this Agreement. Employee acknowledges that the consideration given for this waiver and release Agreement is in addition to anything of value to which Employee was already
entitled. Employee further acknowledges that he has been advised by this writing that: 
  

	 	(a)	Employee should consult with an attorney prior to executing this Agreement; 

 

	 	(b)	Employee has up to twenty-one (21) days within which to consider this Agreement; 

 

	 	(c)	Employee has seven (7) days following his execution of this Agreement to revoke this Agreement; 

 

	 	(d)	this ADEA waiver shall not be effective until the revocation period has expired; and, 

 

	 	(e)	nothing in this Agreement prevents or precludes Employee from challenging or seeking a determination in good faith of the validity of this waiver under the ADEA, nor
does it impose any condition precedent, penalties or costs for doing so, unless specifically authorized by federal law. 

9.    No Pending or Future Lawsuits. Employee represents that he has no lawsuits, claims, or actions pending in his name, or
on behalf of any other person or entity, against the Company or any of the other Releasees. Employee also represents that he does not intend to bring any claims on his own behalf or on behalf of any other person or entity against the Company or any
of the other Releasees. 
 10.    Application for Employment. Employee understands and agrees that, as a condition of
this Agreement, he shall not be entitled to any employment with the Company, its subsidiaries, or any successor, and he hereby waives any alleged right of employment or re-employment with the Company, its subsidiaries or related companies, or any
successor. Employee further acknowledges and agrees that the forbearance to seek future employment stated in this paragraph is purely contractual, and is in no way involuntary, discriminatory or retaliatory. 

11.    Assistance. Employee agrees to personally provide reasonable assistance and cooperation to the Company in activities
related to the prosecution or defense of any pending or future lawsuits or claims involving the Company. The Company will reimburse Employee for any reasonable out of pocket costs and expenses incurred in connection with providing such assistance.

  
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 12.    No Cooperation. Except as otherwise prohibited by law, Employee agrees
that he will not knowingly counsel or assist any attorneys or their clients in the presentation or prosecution of any disputes, differences, grievances, claims, charges, or complaints by any third party against any of the Releasees, unless under a
subpoena or other court order to do so. Employee agrees both to immediately notify the Company upon receipt of any such subpoena or court order, and to furnish, within three (3) business days of its receipt, a copy of such subpoena or court
order to the Company. If approached by anyone for counsel or assistance in the presentation or prosecution of any disputes, differences, grievances, claims, charges, or complaints against any of the Releasees, Employee shall state no more than that
he cannot provide counsel or assistance. 
 13.    Medicare. Employee affirms, covenants, and warrants he is not a
Medicare beneficiary and is not currently receiving, has not received in the past, will not have received at the time of payment pursuant to this Agreement, is not entitled to, is not eligible for, and has not applied for or sought Social Security
Disability or Medicare benefits. If, and only if, any statement in the preceding sentence is incorrect (for example, but not limited to, if Employee is a Medicare beneficiary, etc.), the following sentences (i.e., the remaining sentences of this
paragraph) apply in lieu of the preceding sentence. Employee affirms, covenants, and warrants he has made no claim for illness or injury against, nor is he aware of any facts supporting any claim against, the Releasees under which the Releasees
could be liable for medical expenses incurred by the Employee before or after the execution of this agreement. Furthermore, Employee is aware of no medical expenses which Medicare has paid and for which the Releasees are or could be liable now or in
the future. Employee agrees and affirms that, to the best of his knowledge, no liens of any governmental entities, including those for Medicare conditional payments, exist. Employee will indemnify, defend, and hold the Releasees harmless from
Medicare claims, liens, damages, conditional payments, and rights to payment, if any, including attorneys’ fees, and Employee further agrees to waive any and all future private causes of action for damages pursuant to 42 U.S.C. §
1395y(b)(3)(A) et seq. 
 14.    Non-Competition. Until the first anniversary of the Retirement Date, Employee shall
not, without the prior written consent of the Company, engage in or carry on, directly or indirectly, whether as an advisor, principal, agent, partner, officer, director, employee, stockholder, associate or consultant to any person, partnership,
corporation or any other business entity, the business of outsourced semiconductor packaging and test services; provided that ownership by Employee of securities of the Company or of less than a five percent equity interest in a publicly held
company shall not be a breach of this paragraph. 
 15.    Non-Disparagement. At no time before, on or after the
Retirement Date shall Employee publish or otherwise transmit any disparaging, derogatory or defamatory remarks, comments or statements, whether written or oral, regarding the Company, its affiliates or their respective officers, directors,
employees, consultants, reputations, products, operations, procedures, policies or services, which are reasonably likely to (i) damage the reputation of the Company or its affiliates or (ii) interfere with the contracts or business
relationships of the Company or its affiliates. This paragraph shall not restrict or prevent Employee from providing truthful testimony as required by court order or other legal process. 

  
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 16.    Non-Solicitation. Until the first anniversary of the Retirement Date,
Employee shall not, without the express prior written consent of the Company, directly or indirectly, for himself or on behalf of any other person or entity, (i) solicit or encourage any customer, vendor, client or prospective customer, vendor
or client (or anyone who was a customer, vendor or client during Employee’s employment with the Company) to cease any relationship with the Company or its affiliates or (ii) solicit or encourage any employee or consultant of the Company or
its affiliates (or anyone who was an employee or consultant of the Company or its affiliates during Employee’s employment with the Company) to leave the employment of or cease to perform services for the Company or its affiliates; provided that
this paragraph shall not prohibit any general public advertisement or general solicitation for personnel not specifically directed at any employee or consultant of the Company or its affiliates. 

17.    Attorneys’ Fees and Costs. Except as otherwise provided herein, in the event that either Party brings an action to
enforce or effect its rights under this Agreement, the prevailing party shall be entitled to recover its costs and expenses, including the costs of mediation, arbitration, litigation, court fees, plus reasonable attorneys’ fees incurred in
connection with such an action. 
 18.    Arbitration. The Parties agree that any and all disputes arising out of, or
relating to, the terms of this Agreement, their interpretation, and any of the matters herein released, shall be subject to binding arbitration in Maricopa County, Arizona before the American Arbitration Association under its Employment Arbitration
Rules. The Parties agree that the prevailing party in any arbitration shall be entitled to injunctive relief in any court of competent jurisdiction to enforce the arbitration award. The arbitrator shall have no authority to add to, subtract from, or
otherwise modify the terms of this Agreement or to make awards beyond those provided for by the statute or other cause of action under with the claim arises. The Parties agree that the prevailing party in any arbitration shall be awarded its
reasonable attorneys’ fees and costs to the extent permissible under the Employment Arbitration Rules. The Parties hereby agree to waive their right to have any dispute between them resolved in a court of law by a judge or jury. This
section will not prevent either party from seeking injunctive relief (or any other provisional remedy) from any court having jurisdiction over the Parties and the subject matter of their dispute relating to Employee’s obligations under this
Agreement and the agreements incorporated herein by reference. 
 19.    Representations. Each party represents that
it has had the opportunity to consult with an attorney, and has carefully read and understands the scope and effect of the provisions of this Agreement. Neither party has relied upon any representations or statements made by the other party hereto
which are not specifically set forth in this Agreement. 
 20.    Severability; Substitution. In the event that any
provision in this Agreement becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable, or void, this Agreement shall continue in full force and effect without said provision so long as the remaining provisions remain
intelligible and continue to reflect the original intent of the Parties. If a court of competent jurisdiction holds that the duration, scope, area or other restrictions set forth in 

  
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Sections 4, 14, 15 or 16 are unreasonable under circumstances then existing, the Parties agree that the maximum duration, scope, area or other restrictions reasonable under such circumstances
will be substituted for the stated duration, scope, area or other restrictions. 
 21.    Entire Agreement. This
Agreement, the Employee Confidentiality Agreement and any and all restricted stock award agreements and stock option agreements represent the entire agreement and understanding between the Company and Employee concerning the subject matter of this
Agreement and Employee’s relationship with the Company, and supersede and replace any and all prior agreements and understandings between the Parties concerning the subject matter of this Agreement and Employee’s relationship with the
Company. 
 22.    No Oral Modification. Any modification or amendment of this Agreement, or additional obligation
assumed by either party in connection with this Agreement, shall be effective only if placed in writing and signed by both Parties or their authorized representatives. 
 23.    Section 409A. This Agreement is intended to comply with Code Section 409A (to the extent applicable) and the Parties hereto agree to interpret, apply and
administer this Agreement in the least restrictive manner necessary to comply therewith and without resulting in any increase in the amounts owed hereunder by the Company. Notwithstanding anything herein to the contrary, neither the Company nor any
of its affiliates shall have any liability to Employee or to any other person if the payments and benefits provided in this Agreement that are intended to be exempt from or compliant with Code Section 409A are not so exempt or compliant.
Employee’s right to receive installment payments hereunder shall be treated as a right to receive a series of separate payments and, accordingly, each installment payment shall at all times be considered a separate and distinct payment for
purposes of Code Section 409A. 
 24.    Governing Law. This Agreement shall be governed by the laws of the
State of Arizona, without regard for choice of law provisions. 
 25.    Effective Date. This Agreement shall become
effective after eight (8) days have passed following the date Employee signed this Agreement, provided he has not revoked it pursuant to Section 8(d) of the Agreement (the “Effective Date”). In order to revoke this Agreement,
Employee must provide a signed letter of revocation to the Company’s General Counsel prior to the Effective Date. The Company’s General Counsel shall be deemed to have received such letter of revocation only upon his actual receipt
thereof. If Employee does not revoke this Agreement prior to the Effective Date, Employee is requested to sign and return the Notice of Non-Revocation set forth on Exhibit A to the Company’s General Counsel on the Effective Date or as soon as
practicable thereafter; provided, however, that, absent Employee’s submission of a timely letter of revocation, this Agreement shall be deemed effective on the Effective Date whether or not Employee signs and returns such Notice of
Non-Revocation. 
 26.    Counterparts. This Agreement may be executed in counterparts, and each counterpart shall
have the same force and effect as an original and shall constitute an effective, binding agreement on the part of each of the undersigned. 

27.    Headings Irrelevant. The headings in this Agreement are intended as a convenience to the reader and are not intended to
convey any legal meaning. 

  
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 28.    Voluntary Execution of Agreement. This Agreement is executed voluntarily
and with the full intent of releasing all claims, and without any duress or undue influence by any of the Parties. The Parties acknowledge that: 
  

	 	(a)	They have read this Agreement; 

  

	 	(b)	They have been represented in the preparation, negotiation, and execution of this Agreement by legal counsel of their own choice or that they have voluntarily declined
to seek such counsel; 

  

	 	(c)	They understand the terms and consequences of this Agreement and of the releases it contains; and 

 

	 	(d)	They are fully aware of the legal and binding effect of this Agreement. 

 [Signature Page Follows] 

  
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 IN WITNESS WHEREOF, the Parties have executed this Agreement on the dates set forth below.

  

			
	AMKOR TECHNOLOGY, INC.
		
	By	 	/s/ Gil C. Tily
	Name:	 	Gil C. Tily
	Title:	 	EVP, CAO & General Counsel
		
	Dated	 	May 8, 2013

  

	
	EMPLOYEE
	
	/s/ Kenneth T. Joyce
	Kenneth T. Joyce

 
			
		
	Dated	 	May 8, 2013

  
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 EXHIBIT A 

NOTICE OF NON-REVOCATION 
 AS OF THE DATE SHOWN ON THIS FORM 
 By signing below, I hereby
verify that I have chosen not to revoke my agreement to and execution of the Retirement Agreement and Release between me and the Company. My signature below confirms my renewed agreement to the terms of that Retirement Agreement and Release,
including the release and waiver of any and all claims relating to my employment with the Company and/or the termination of that employment. 
  

					
		 		 	Kenneth T. Joyce
			
	 	 		 	 
	Date	 		 	Signature*

 *Do not sign, date, or return this document until eight (8) days after you signed the Retirement Agreement and
Release.EX-10.1

 Exhibit 10.1 
 EXECUTION VERSION 
 STOCKHOLDERS’ AGREEMENT 

dated as of 
 April 24, 2013 
 among 

GAIN CAPITAL HOLDINGS, INC. 
 and 
 GARY L. TILKIN 

 TABLE OF CONTENTS 

 
  

 

					
	 	  	PAGE	 
	ARTICLE 1	  
	DEFINITIONS	  
		
	 Section 1.01. Definitions
	  	 	1	  
	 Section 1.02. Other Definitional and Interpretative Provisions
	  	 	4	  
	
	ARTICLE 2	  
	BOARD RIGHTS; VOTING	  
		
	 Section 2.01. Stockholder Appointment to Company Board
	  	 	4	  
	 Section 2.02. Stockholder Voting Obligations
	  	 	5	  
	 Section 2.03 Stockholder Standstill
	  	 	6	  
	
	ARTICLE 3	  
	RESTRICTIONS ON TRANSFER	  
		
	 Section 3.01. General Restrictions on Transfer
	  	 	7	  
	 Section 3.02. Legends
	  	 	8	  
	 Section 3.03. Permitted Transferees
	  	 	8	  
	 Section 3.04. Restrictions on Transfers by the Stockholder
	  	 	8	  
	 Section 3.05. Notices Of Transfer
	  	 	9	  
	 Section 3.06. Right Of First Refusal
	  	 	9	  
	 Section 3.07. Cooperation by the Company
	  	 	10	  
	
	ARTICLE 4	  
	CERTAIN COVENANTS AND AGREEMENTS	  
		
	 Section 4.01. Termination
	  	 	10	  
	
	ARTICLE 5	  
	MISCELLANEOUS	  
		
	 Section 5.01. Successors and Assigns
	  	 	11	  
	 Section 5.02. Notices
	  	 	11	  
	 Section 5.03. Amendments and Waivers
	  	 	12	  
	 Section 5.04. Governing Law
	  	 	12	  
	 Section 5.05. Jurisdiction
	  	 	12	  
	 Section 5.06. WAIVER OF JURY TRIAL
	  	 	13	  
	 Section 5.07. Specific Enforcement
	  	 	13	  
	 Section 5.08. Counterparts; Effectiveness; Third-Party Beneficiaries
	  	 	13	  
	 Section 5.09. Entire Agreement
	  	 	14	  
	 Section 5.10. Severability
	  	 	14	  
		
	 Exhibit A       Joinder Agreement
	  			

 STOCKHOLDERS’ AGREEMENT 

STOCKHOLDERS’ AGREEMENT dated as of April 24, 2013 (this “Agreement”) among Gain Capital Holdings, Inc., a
Delaware corporation (the “Company”) and Gary Tilkin (the “Stockholder”). If the Stockholder shall have Transferred any of his Company Securities to any of his Permitted Transferees (as such terms are defined
below), the term “Stockholder” shall include such Permitted Transferees, taken together. 
 W I T N E S S E T H :

 WHEREAS, the Company and the Stockholder are parties to that certain Stock Purchase Agreement dated as of April 24,
2013 (the “Stock Purchase Agreement”) by and among the Company, the Stockholder and Global Futures & Forex, Ltd., a Michigan corporation (capitalized terms used in this Agreement but not defined herein shall have the
meanings ascribed to them in the Stock Purchase Agreement); 
 WHEREAS, in connection with the transactions contemplated by the
Stock Purchase Agreement, the Stockholder will acquire 4,944,165 shares of common stock, par value $0.00001 per share, of the Company (together with any stock into which such shares may thereafter be converted or changed, the “Common
Stock”); and 
 WHEREAS, the Company and the Stockholder desire to make certain agreements relating to the ownership
and voting of the Company Common Stock owned by the Stockholder, the composition of the Company’s Board of Directors (the “Board”) and certain other matters; 

NOW, THEREFORE, in consideration of the covenants and agreements contained herein, the parties hereto agree as follows: 

ARTICLE 1 

DEFINITIONS 
 Section 1.01. Definitions. (a) As used herein, the following terms have the following meanings: 
 “Affiliate” means, with respect to any Person, any other Person directly or indirectly controlling, controlled by or under common control with such Person; provided that no
securityholder of the Company shall be deemed an Affiliate of any other securityholder solely by reason of any investment in the Company. For the purpose of this definition, the term “control” (including, with correlative meanings,
the terms “controlling”, “controlled by” and “under common control with”), as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of such Person, whether through the ownership of voting securities, by contract or otherwise. 

 “Business Day” means any day except a Saturday, Sunday or other day on
which commercial banks in New York City are authorized by law to close. 
 “Closing” shall have the meaning set
forth in the Stock Purchase Agreement. 
 “Company Securities” means (i) the Company’s common stock
par value $0.00001 per share, (ii) securities convertible into or exchangeable for such common stock, (iii) any other equity or equity-linked security issued by the Company and (iv) options, warrants or other rights to acquire such
common stock or any other equity or equity-linked security issued by the Company. 
 “Governmental Authority”
means any transnational, domestic or foreign, federal, state or local governmental authority, department, court, agency or official, including any political subdivision thereof. 

“Initial Ownership” means the 4,944,165 shares of Common Stock acquired by the Stockholder at the Closing. 

“Permitted Transferee” means 
 (i) (A) any Person to whom Company Securities are Transferred from the Stockholder (1) by will or the laws of descent and distribution or (2) by gift without consideration of any kind;
provided that, in the case of clauses (1) and (2), such transferee is an immediate family member or the lineal descendant, executor, administrator or testamentary trustee of the Stockholder, (B) a trust or partnership that is for
the exclusive benefit of the Stockholder or his Permitted Transferees under clause (A), (C) a business entity that is wholly-owned by the Stockholder, or (D) a financial or banking institution pursuant to a bona fide pledge
(provided that (i) the loan, note or other agreement secured by such pledge provides for full recourse against the Stockholder and (ii) the fair market value of the Company Securities so pledged as of the date of such loan, note or
other agreement is greater than or equal to 200% of the principal amount of the loan, note or other agreement secured by such pledge); and 
 (ii) any other Person with respect to which the Company shall have provided its consent. 
 “Person” means an individual, corporation, partnership, limited liability company, association, trust or other entity or organization, including a Governmental Authority. 

  
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 “Rule 144” means Rule 144 (or any successor provisions) under the
Securities Act. 
 “Subsidiary” means any entity of which securities or other ownership interests having
ordinary voting power to elect a majority of the board of directors or other persons performing similar functions are directly or indirectly owned by the Company. 
 “Transfer” means, with respect to any Company Securities, (i) when used as a verb, to sell, assign, dispose of, exchange, pledge, lend, encumber, hypothecate or otherwise transfer
such Company Securities or any economic participation or interest therein (including through hedging or other derivative transactions), whether directly or indirectly, or agree, offer or commit to do any of the foregoing (including by contract,
option or other agreement or arrangement) and (ii) when used as a noun, a direct or indirect sale, assignment, disposition, exchange, pledge, loan, encumbrance, hypothecation or other transfer of such Company Securities or any participation or
interest therein (including through a hedging or other derivative transaction) or any agreement, offer or commitment to do any of the foregoing (including by contract, option or other agreement or arrangement). 

“Voting Securities” means, at any time, any class of Company Securities then entitled to vote generally in the election
of directors, including all shares of Common Stock now owned or subsequently acquired by the Stockholder, however acquired, whether through stock splits, stock dividends, reclassifications, recapitalizations, similar events or otherwise. 

(b) Each of the following terms is defined in the Section set forth opposite such term: 

 

					
	 Term
	  	 Section
	  	  
	Agreement	  	Preamble	  	
	Board	  	Recitals	  	
	Company	  	Preamble	  	
	Common Stock	  	Recitals	  	
	e-mail	  	5.02	  	
	Fundamental Transaction	  	2.02	  	
	Initial Lock-Up Date	  	3.04(b)	  	
	Offer	  	3.06(a)	  	
	Offer Notice	  	3.06(a)	  	
	Offer Price	  	3.06(a)	  	
	Offered Securities	  	3.06(a)	  	
	Second Lock-Up Date	  	3.04(c)	  	
	Standstill Period	  	2.03	  	
	Stockholder	  	Preamble	  	
	Stock Purchase Agreement	  	Recitals	  	
	Term Loan	  	2.01(d)	  	

  
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 Section 1.02. Other Definitional and Interpretative Provisions. The words
“hereof”, “herein” and “hereunder” and words of like import used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement. The captions herein are included for
convenience of reference only and shall be ignored in the construction or interpretation hereof. References to Articles, Sections, Exhibits and Schedules are to Articles, Sections, Exhibits and Schedules of this Agreement unless otherwise specified.
All Exhibits and Schedules annexed hereto or referred to herein are hereby incorporated in and made a part of this Agreement as if set forth in full herein. Any capitalized terms used in any Exhibit or Schedule but not otherwise defined therein,
shall have the meaning as defined in this Agreement. Any singular term in this Agreement shall be deemed to include the plural, and any plural term the singular. Whenever the words “include”, “includes” or “including”
are used in this Agreement, they shall be deemed to be followed by the words “without limitation”, whether or not they are in fact followed by those words or words of like import. “Writing”, “written” and comparable
terms refer to printing, typing and other means of reproducing words (including electronic media) in a visible form. References to any agreement or contract are to that agreement or contract as amended, modified or supplemented from time to time in
accordance with the terms hereof and thereof. References to any Person include the successors and permitted assigns of that Person. References from or through any date mean, unless otherwise specified, from and including or through and including,
respectively. 
 ARTICLE 2 
 BOARD RIGHTS; VOTING 

Section 2.01. Stockholder Appointment to Company Board. (a) Subject to Section 2.01(d), effective as of the
Closing, the Board shall cause the number of authorized members of the Board to be expanded by one member and shall appoint the Stockholder as a Class II director. Subject to Sections 2.01(c) and 2.01(d), following such appointment, at any meeting
of the stockholders of the Company at which directors of the Board are to be elected, the Company will include the Stockholder in the slate of directors recommended for election by the Board to the stockholders of the Company and shall use
commercially reasonable efforts to procure the election or reelection, as the case may be, of the Stockholder, including the solicitation of proxies in favor of such election or reelection. 

  
 4 

 (b) In the event of the resignation of the Stockholder, the Stockholder will not be
permitted to designate a replacement director. In the event of (i) the death or (ii) removal or disqualification of the Stockholder including for his failure to meet the eligibility standards established by the Nominating and Corporate
Governance Committee of the Board, the Stockholder will be permitted to designate a replacement director. 
 (c) The Stockholder
shall (i) at the time of initial appointment and at each time the Stockholder or his replacement designated by the Stockholder pursuant to Section 2.01(b) would be nominated for reelection, meet the eligibility standards established by the
Nominating and Corporate Governance Committee of the Board and applicable to all board nominees and (ii) agree to resign in the event the Stockholder’s term shall end as described in Section 2.01(d). 

(d) If at any time after the Closing, (i) the Stockholder ceases to own Common Stock in an amount equal to at least 20% of the
Initial Ownership and (ii) the principal amount of the term loan (the “Term Loan”) made pursuant to the Loan and Security Agreement between the Stockholder and the Company dated as of the date hereof (the “Loan and
Security Agreement”) is less than 20% of the amount of the Term Loan outstanding as of the Closing, the obligations of the Company and the Board pursuant to this Section 2.01 shall cease and the Stockholder or his replacement designee
shall, upon the request of the Board of Directors of the Company, promptly tender his or her resignation as a director of the Board. For the avoidance of doubt, once the Stockholder loses the right to be appointed to the Board, the Stockholder will
not thereafter regain such right regardless of any subsequent acquisitions of Company Securities by the Stockholder or any change to the outstanding Company Securities by the Company that, in either case, results in the Stockholder owning 20% or
more of the Initial Ownership. 
 (e) The Company agrees to cause the individual designated pursuant to this Section 2.01
to be nominated or appointed to serve as a director on the Board, and to take all other necessary actions (including calling a special meeting of the Board and/or stockholders) to ensure that the composition of the Board is as set forth in this
Section 2.01. 
 Section 2.02. Stockholder Voting Obligations. (a) From the date hereof until the
Stockholder ceases to own Common Stock in an amount equal to at least 20% of the Initial Ownership the Stockholder agrees that, except with respect to a Fundamental Transaction (as defined below), at any time the Stockholder is then entitled to vote
on any matter in his capacity as a stockholder of the Company, the Stockholder shall vote his Voting Securities pro rata in accordance with the vote of the other stockholders of the Company. The term “Fundamental Transaction” means
(i) any merger, share purchase, reorganization, consolidation or other business combination involving the Company (whether in a single 

  
 5 

 
transaction or a series of related or substantially contemporaneous transactions) in which, as a result of such transaction, (1) Company Securities are converted into or exchanged for, or
the holders of Company Securities immediately before such transaction receive, cash, property, rights, securities or other consideration (other than voting stock with substantially the same rights and privileges in the Company or in such other
Person surviving such transaction or that is the issuer of the capital stock into which the Company Securities are converted into or exchanged for) or (2) the holders of Voting Securities immediately before such transaction possess less than
50% of the outstanding voting power of the Company or such other Person surviving such transaction, (ii) any tender offer for more than 50% of the outstanding Company Securities or (iii) a sale, conveyance, exchange or transfer (for cash,
shares of stock, securities or other consideration) of all or substantially all of the assets of the Company (whether in a single transaction or a series of related or substantially contemporaneous transactions). 

(b) If the Stockholder fails to vote his Voting Securities in accordance with Section 2.02(a), the Stockholder shall, upon such
failure to so vote, be deemed immediately to have granted to the Company a proxy to vote the Stockholder’s Voting Securities solely for the matter then presented to the Company’s stockholders. The Stockholder acknowledges that each such
proxy granted hereby, including any successive proxy, if necessary, is being given to secure the performance of an obligation hereunder, is coupled with an interest, and shall be irrevocable until such obligation is performed. 

Section 2.03 Stockholder Standstill.  
 (a) The Stockholder agrees that until the earlier of (x) the date on which the Stockholder ceases to own Common Stock in an amount equal to at least 20% of the Initial Ownership and (y) the date
that is five years from the date hereof (the “Standstill Period”), the Stockholder will not, directly or indirectly, (i) subject to the rights of the Stockholder to vote his Voting Securities to the extent permitted by
Section 2.02, enter into or agree, offer, propose or seek to enter into, or otherwise be involved in or part of, any Fundamental Transaction, (ii) make, or in any way participate in, any “solicitation” of “proxies” (as
such terms are defined under Regulation 14A of the Exchange Act) to vote, or seek to advise or influence any Person other than a Permitted Transferree with respect to the voting of, any Voting Securities, (iii) form, join or otherwise
participate in a “group” (within the meaning of Section 13(d)(3) of the Exchange Act) with respect to any Voting Securities, (iv) except (A) as contemplated by Section 2.01, (B) pursuant to his right (subject to
Section 2.02) to vote the Voting Securities held by the Stockholder or (C) in connection with actions taken by him in his capacity as a member of the Board or as a shareholder communicating with management or the Board on an individual
basis and in a manner not reasonably expected to require public disclosure by the Company or the Stockholder, seek, propose or otherwise act in concert with others to influence or control the management, Board or

  
 6 

 
policies of the Company, (v) enter into any discussions, negotiations, arrangements or understandings with any other Person with respect to any of the foregoing activities or propose any of
such activities to any other Person, (vi) advise, assist, knowingly encourage, act as a financing source for or otherwise invest in any Person in connection with any of the foregoing activities or (vii) disclose any intention, plan or
arrangement inconsistent with any of the foregoing. The Stockholder agrees that it shall promptly advise the Company of any inquiry or proposal made to the Stockholder with respect to any of the foregoing. 

(b) The Stockholder agrees that, during the Standstill Period, it will not, directly or indirectly, (i) request that the Company
amend or waive any provision of this Section 2.03 (including this sentence) or (ii) take any initiative with respect to the Company that, in each case, would reasonably be expected to require the Company to make a public announcement
regarding (A) any of the activities referred to in Section 2.03(a) or (B) the possibility of the Stockholder or any other Person acquiring control of the Company, whether by means of a Fundamental Transaction or otherwise. 

(c) For purposes of Section 2.03, the “Company” shall be deemed to include the Company, any successor to or person in
control of the Company, or any division thereof or of any such successor or controlling person. 
 ARTICLE 3 

RESTRICTIONS ON TRANSFER 

Section 3.01. General Restrictions on Transfer. (a) The Stockholder agrees that he shall not Transfer any Company
Securities (or solicit any offers in respect of any Transfer of any Company Securities) in contravention of (i) the terms and conditions of this Agreement or (ii) so long as the Stockholder shall be a member of the Board of Directors of
the Company, the policies generally applicable to all members of the Company’s Board of Directors, including any policies relating to trading in any Company Securities. In addition, the Stockholder agrees that he shall not Transfer any Common
Stock (or solicit any offers in respect of any Transfer of any Common Stock) (i) unless there is an effective registration statement under the Securities Act covering such Common Stock, the sale is made in accordance with Rule 144 under the
Securities Act, or such Transfer is exempt from registration requirements of the Securities Act or (ii) if such Transfer (or solicitation of an offer of a Transfer) would violate any other applicable securities or “blue sky” laws.

 (b) Any attempt to Transfer any Company Securities in violation of this Agreement shall be null and void, and the Company
shall not, and shall cause any transfer agent not to, give any effect in the Company’s stock records to such attempted Transfer. 

  
 7 

 Section 3.02. Legends. (a) In addition to any other legend that may be
required, each certificate for Common Stock issued to the Stockholder shall bear a legend in substantially the following form: 

THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED, OR ANY NON-U.S. OR STATE SECURITIES LAWS AND MAY
NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN COMPLIANCE THEREWITH. THIS SECURITY IS ALSO SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER AS SET FORTH IN THE STOCKHOLDERS’ AGREEMENT DATED AS OF APRIL 24, 2013, COPIES OF WHICH
MAY BE OBTAINED UPON REQUEST FROM GAIN CAPITAL HOLDINGS, INC. OR ANY SUCCESSOR THERETO. 
 (b) If any shares of Common Stock
cease to be subject to any and all restrictions on Transfer set forth in this Agreement, the Company, upon the written request of the Stockholder as holder thereof, shall issue to the Stockholder a new certificate evidencing such Common Stock
without all or part of the legend required by Section 3.02(a) (unless part of such legend is required by applicable law) endorsed thereon. 
 Section 3.03. Permitted Transferees. Notwithstanding anything in this Agreement to the contrary, the Stockholder may at any time Transfer any or all of his Company Securities to one or more of
his Permitted Transferees without the consent of the Board so long as (a) such Permitted Transferee shall have agreed in writing to be bound by the terms of this Agreement in the form of Exhibit A attached hereto and (b) the Transfer shall
not be in violation of Section 3.01(a). 
 Section 3.04. Restrictions on Transfers by the Stockholder.
(a) Prior to the second anniversary of the date of this Agreement, the Stockholder may not Transfer any Company Securities, except (i) to one or more of his Permitted Transferees in accordance with Section 3.03, (ii) pursuant to
Section 3.04(c) or (iii) into a tender offer for the Company’s outstanding common stock on a pro rata basis with all other stockholders of the Company. 
 (b) From the Closing until the date that is six months after the Closing Date (the “Initial Lock-Up Date”), the Stockholder agrees that it shall not, without the Company’s prior
written consent, Transfer any Company Securities to any Person other than a Permitted Transferee in accordance with Section 3.03. 

  
 8 

 (c) Notwithstanding the restrictions of Section 3.04(a), but subject to
Section 3.06, the Stockholder may Transfer 16.67% of the Initial Ownership every three months following the six month anniversary of the date of this Agreement, plus any unsold allotment pursuant to this sentence which is not sold during any
prior three month period; provided, however, that prior to the second anniversary of the date of this Agreement, such Transfers must be made in compliance with the requirements of Rule 144 applicable to affiliates of the Company (even
if the Stockholder is not an affiliate of the Company at the time of such Transfer). 
 Section 3.05. Notices Of
Transfer. The Stockholder shall give the Company prompt written notice of any Transfer of Company Securities prior to the second anniversary of the date of this Agreement, and specify in such notice in reasonable detail (i) the number of
Company Securities so transferred and (ii) in the event the number of Company Securities so transferred exceeds 1% of the outstanding Company Securities, the identity of the transferee. 

Section 3.06. Right Of First Refusal.  
 (a) Following the second anniversary of the date of this Agreement and continuing until the Stockholder ceases to own Common Stock in an amount equal to at least 20% of the Initial Ownership, the
Stockholder shall not Transfer any Common Stock except for Transfers (i) made in compliance with the requirements of Rule 144 applicable to affiliates of the Company (even if the Stockholder is not an affiliate of the Company at the time of
such Transfer) or (ii) made in compliance with this Section 3.06. 
 (b) In the event the Stockholder receives from or
otherwise negotiates with a third party an offer to purchase any or all of the Company Securities owned or held by the Stockholder (an “Offer”) and the Stockholder intends to pursue the Transfer of such Company Securities to such
third party, the Stockholder shall give notice (an “Offer Notice”) to the Company that it desires to accept the Offer and that sets forth the number and kind of Company Securities (the “Offered Securities”), the
price per share that the Stockholder proposes to be paid for such Offered Securities (the “Offer Price”) and all other material terms and conditions of the Offer. 

(c) The giving of an Offer Notice to the Company shall constitute an offer by the Stockholder to Transfer the Offered Securities, in
whole and not in part, to the Company at the Offer Price and on the other terms set forth in the Offer Notice. Such offer shall be irrevocable for 20 Business Days after receipt of such Offer Notice by the Company. The offer may be accepted by the
Company by giving an irrevocable notice of acceptance to the Stockholder prior to the expiration of such 20 Business-Day period. 

  
 9 

 (d) If the Company accepts the offer to purchase all the Offered Securities, the Company
shall purchase and pay, by wire transfer of immediately available funds to an account designated by the Stockholder, for all Offered Securities within 20 Business Days after the date on which all such Offered Securities have been accepted.

 (e) Upon the earlier to occur of (i) full rejection of the offer by the Company, (ii) the expiration of the 20
Business Day period without the Company accepting the offer to purchase all of the Offered Securities and, (iii) the failure to obtain any required consent or regulatory approval for the purchase of all the Offered Securities by the Company
within 90 days of the Company’s acceptance of the offer, the Stockholder shall have a 120-day period during which to effect a Transfer to the third party making the Offer of any or all of the Offered Securities on substantially the same or more
favorable (as to the Stockholder) terms and conditions as were set forth in the Offer Notice at a price not less than the Offer Price; provided that the Transfer to such third party is not in violation of applicable federal, state or foreign
securities laws. 
 Section 3.07. Cooperation by the Company. The Company shall use commercially reasonable efforts
to satisfy the condition contained in Rule 144 under the Securities Act with respect to Current Public Information and any other conditions to make such Rule available to the Stockholder for the sale of Common Stock, including filing with the
Securities and Exchange Commission in a timely manner all reports and other documents required of the Company under the Securities Act and the Securities Exchange Act. In addition, the Company shall furnish to the Stockholder so long as the
Stockholder owns Common Stock, promptly upon request, a written statement by the Company as to its compliance with the reporting requirements of Rule 144. 
 ARTICLE 4 
 CERTAIN COVENANTS AND
AGREEMENTS 
 Section 4.01. Termination. (a) This Agreement shall terminate in its entirety upon
the earlier of (i) the termination of the Stock Purchase Agreement in accordance with its terms prior to the Closing, or (ii) if the Closing occurs, the date on which the Stockholder’s number of shares of Common Stock beneficially
owned by the Stockholder falls below 2% of the outstanding Company Securities; provided that in each case the provisions of Sections 5.02 (Notices), 5.04 (Governing Law), 5.05 (Jurisdiction), 5.06 (Waiver of Jury Trial), 5.07 (Specific
Enforcement), 5.08 (Counterparts; Effectiveness; Third-party Beneficiaries), 5.09 (Entire Agreement) and 5.10 (Severability) shall survive indefinitely. 

  
 10 

 ARTICLE 5 
 MISCELLANEOUS 
 Section 5.01. Successors and Assigns.
(a) This Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective heirs, successors, legal representatives and permitted assigns. 

(b) Neither this Agreement nor any right, remedy, obligation or liability arising hereunder or by reason hereof shall be assignable by
any party hereto pursuant to any Transfer of Common Stock or otherwise, except that any Permitted Transferee acquiring Common Stock pursuant to Section 3.03 shall (unless already bound hereby) execute and deliver to the Company an agreement to
be bound by this Agreement in the form of Exhibit A hereto and shall thenceforth be a “Stockholder” for all purposes of this Agreement. 
 (c) Nothing in this Agreement, expressed or implied, is intended to confer on any Person other than the parties hereto, and their respective heirs, successors, legal representatives and permitted assigns,
any rights, remedies, obligations or liabilities under or by reason of this Agreement. 
 Section 5.02. Notices. All
notices, requests and other communications to any party hereunder shall be in writing (including facsimile transmission and electronic mail (“e-mail”) transmission, so long as a receipt of such e-mail is requested and received) and
shall be given, 
 if to the Company, to: 
 Gain Capital Holdings, Inc. 
 135 US Highway 202/206 

Suite 11 

Bedminster, NJ 07921 
 Attention: Diego Rotsztain 
 Facsimile No.: (866) 861-1673 

drotsztain@gaincapital.com 
 with a copy to: 
 Davis Polk & Wardwell LLP 

450 Lexington Avenue 
 New York, New York 10017 
 Attention: Leonard Kreynin 

Facsimile No.: (212) 701-5800 
 leonard.kreynin@davispolk.com 

  
 11 

 if to the Stockholder, to: 

Gary Tilkin 
 618
Kenmoor Ave S.E. 
 Grand Rapids, MI 49546 
 Facsimile No.: (616) 974-3663 
 gary.tilkin@gftmarkets.com (before Closing)

 garytilkin618@gmail.com (after Closing) 
 with a copy to: 
 Sidley Austin LLP 

One South Dearborn 
 Chicago, IL 60603 
 Attention: John O’Hare 

Facsimile No.: (312) 853-7036 
 johare@sidley.com 
 or such other address or facsimile number as such party may hereafter specify
for the purpose by notice to the other parties hereto. All notices, requests and other communications shall be deemed received on the date of receipt by the recipient thereof if received prior to 5:00 p.m. in the place of receipt and such day is a
Business Day in the place of receipt. Otherwise, any such notice, request or communication shall be deemed not to have been received until the next succeeding Business Day in the place of receipt. 

Section 5.03. Amendments and Waivers. Any provision of this Agreement may be amended or waived if, but only if, such
amendment or waiver is in writing and is signed, in the case of an amendment, by each party to this Agreement, or in the case of a waiver, by the party against whom the waiver is to be effective. No failure or delay by any party in exercising any
right, power or privilege hereunder shall operate as a waiver thereof, nor shall any single or partial exercise thereof preclude any other or further exercise thereof or the exercise of any other right, power or privilege. The rights and remedies
herein provided shall be cumulative and not exclusive of any rights or remedies provided by law. 
 Section 5.04.
Governing Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York, without regard to the conflicts of laws rules of such state. 

Section 5.05. Jurisdiction. The parties hereby agree that any suit, action or proceeding seeking to enforce any provision of,
or based on any matter arising 

  
 12 

 
out of or in connection with, this Agreement or the transactions contemplated hereby shall be brought in the United States District Court for the Southern District of New York or any New York
State court sitting in New York City, so long as one of such courts shall have subject matter jurisdiction over such suit, action or proceeding, and that any case of action arising out of this Agreement shall be deemed to have arisen from a
transaction of business in the State of New York, and each of the parties hereby irrevocably consents to the jurisdiction of such courts (and of the appropriate appellate courts therefrom) in any such suit, action or proceeding and irrevocably
waives, to the fullest extent permitted by law, any objection that it may now or hereafter have to the laying of the venue of any such suit, action or proceeding in any such court or that any such suit, action or proceeding brought in any such court
has been brought in an inconvenient forum. Process in any such suit, action or proceeding may be served on any party anywhere in the world, whether within or without the jurisdiction of any such court. Without limiting the foregoing, each party
agrees that service of process on such party as provided in Section 5.02 shall be deemed effective service of process on such party. 
 Section 5.06. WAIVER OF JURY TRIAL. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATED TO THIS AGREEMENT
OR THE TRANSACTIONS CONTEMPLATED HEREBY. 
 Section 5.07. Specific Enforcement. Each party hereto acknowledges that
the remedies at law of the other parties for a breach or threatened breach of this Agreement would be inadequate and, in recognition of this fact, any party to this Agreement, without posting any bond, and in addition to all other remedies that may
be available, shall be entitled to obtain equitable relief in the form of specific performance, a temporary restraining order, a temporary or permanent injunction or any other equitable remedy that may then be available. 

Section 5.08. Counterparts; Effectiveness; Third-Party Beneficiaries. This Agreement may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. This Agreement shall become effective when each party hereto shall have received a counterpart hereof
signed by all of the other parties hereto. Until and unless each party has received a counterpart hereof signed by the other parties hereto, this Agreement shall have no effect and no party shall have any right or obligation hereunder (whether by
virtue of any other oral or written agreement or other communication). No provision of this Agreement is intended to confer any rights, benefits, remedies, obligations or liabilities hereunder upon any Person other than the parties hereto and their
respective successors and assigns. 

  
 13 

 Section 5.09. Entire Agreement. This Agreement and the Stock Purchase Agreement
constitute the entire agreement among the parties with respect to the subject matter of this Agreement and supersede all prior agreements and understandings, both oral and written, among the parties hereto with respect to the subject matter of this
Agreement. 
 Section 5.10. Severability. If any term, provision, covenant or restriction of this Agreement is held
by a court of competent jurisdiction or other authority to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions of this Agreement shall remain in full force and effect and shall in no way be affected,
impaired or invalidated so long as the economic or legal substance of the transactions contemplated hereby is not affected in any manner materially adverse to any party. Upon such a determination, the parties shall negotiate in good faith to modify
this Agreement so as to effect the original intent of the parties as closely as possible in an acceptable manner so that the transactions contemplated hereby be consummated as originally contemplated to the fullest extent possible. 

[Signature Page Follows] 

  
 14 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by
their respective authorized officers as of the day and year first above written. 
  

					
	GAIN CAPITAL HOLDINGS, INC.
		
	By:	 	 /s/ Glenn H. Stevens

		 	Name:	 	Glenn H. Stevens
		 	Title:	 	President and CEO
	
	STOCKHOLDER
		
		 	 /s/ Gary L. Tilkin

		 	Name:	 	Gary L. Tilkin

 [Signature Page to Stockholders’ Agreement] 

 EXHIBIT A 
 JOINDER TO STOCKHOLDERS’ AGREEMENT 
 This Joinder Agreement (this
“Joinder Agreement”) is made as of the date written below by the undersigned (the “Joining Party”) in accordance with the Stockholders’ Agreement dated as of April 24, 2013 (the “Stockholders’
Agreement”) among GAIN Capital Holdings Inc. and Gary L. Tilkin, as the same may be amended from time to time. Capitalized terms used, but not defined, herein shall have the meaning ascribed to such terms in the Stockholders’
Agreement. 
 The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the
Joining Party shall be deemed to be a party to the Stockholders’ Agreement as of the date hereof and shall have all of the rights and obligations of a “Stockholder” thereunder as if it had executed the Stockholders’ Agreement.
The Joining Party hereby ratifies, as of the date hereof, and agrees to be bound by, all of the terms, provisions and conditions contained in the Stockholders’ Agreement. 
 IN WITNESS WHEREOF, the undersigned has executed this Joinder Agreement as of the date written below. 
 Date:                  ,          

 

			
	[NAME OF JOINING PARTY]
		
	By:	 	  

		 	Name:
		 	Title:
	
	Address for Notices:

 [Signature Page to Stockholders’ Agreement]

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