Form of Restricted Stock Unit Award Agreement for Christopher R. Concannon pursuant to the MarketAxess Holdings Inc. 2020 Equity Incentive Plan

Grant of RSUs. Subject to the terms and conditions of the Plan, the Guidelines and this Agreement, on the Grant Date, the Company awarded to the Participant [XX]¹ RSUs. Unless otherwise indicated, any capitalized term used but not defined herein shall have the meaning ascribed to such term in the Participant’s employment agreement with the Company, dated as of the date hereof (the “Employment Agreement”), or if not defined in such agreement, the Plan. A copy of the Plan has been delivered to the Executive.

Vesting.

Unless otherwise set forth in an agreement between the Participant and the Company, the RSUs shall vest according to the following schedule: (x) 25% of the RSUs shall vest on [DATE], 2026², (y) 25% of the RSUs shall vest on [DATE], 2027³, and (z) 50% of the RSUs shall vest on [DATE], 2028⁴ (in each case, the “Vesting Date”), subject to the Participant continuously providing services to the Company or its Affiliates through each such date. Unless otherwise set forth below, if the Participant incurs a termination of service for any reason at any time prior to the applicable Vesting Date (including if the Participant voluntarily resigns without Good Reason), the Participant shall forfeit any unvested RSUs as of the date of termination of service.

Upon the Participant’s termination of service (i) by the Company without Cause (which term for all purposes of this Agreement shall have the same meaning as a “Cause Event” under the Employment Agreement) during a CIC Period (as defined below), (ii) by the Participant for Good Reason during a CIC Period or (iii) due to the Participant’s death or Disability, then in each case of clauses (i), (ii) and (iii), all of the unvested RSUs shall vest in full as of the date of such termination of service, or, in the case of clauses (i) and (ii) above, the date of such Change in Control, if later than the date of such termination of service.

Note to draft: The number of RSUs representing $1.05 million, determined by dividing award value by the average closing price of Company stock on the ten trading days leading up to and including the Grant Date, rounded to the nearest whole number.

Note to draft: 3^rd anniversary of the Grant Date

Note to draft: 4^th anniversary of the Grant Date

Note to draft: 5^th year anniversary of date of grant.

Upon the Participant’s termination of service (i) by the Company without Cause outside the CIC Period, or (ii) by the Participant for Good Reason outside the CIC Period, then in each case of clauses (i) and (ii), all of the unvested RSUs shall continue to vest on the applicable Vesting Date(s) as if the Participant had remained actively employed through such date; provided, however, such unvested RSUs shall, at all times prior to the applicable Vesting Date(s), remain subject to forfeiture in accordance with Section 3 below.

Forfeiture. Notwithstanding anything else set forth herein, all unvested RSUs and Participant’s rights in respect thereof, shall be immediately forfeited upon Participant’s: (i) termination for Cause; (ii) breach of any of the Restrictive Covenants or (iii) conduct that occurred during Participant’s service of the Company that the Company learned of following the Participant’s termination of service that would have given rise to a termination for Cause; provided that in the case of this Section 3(iii), no such forfeiture shall occur if Participant could have cured the event giving rise to such Cause pursuant to the Employment Agreement if he were employed by the Company. For the avoidance of doubt, this award is also subject to any compensation recapture policies established by the Board (or any committee thereof) generally applicable to the Company’s executive officers from time to time, in its sole discretion.

Securities Representations. The grant of the RSUs and any issuance of shares of Common Stock pursuant to this Agreement are being made by the Company in reliance upon the following express representations and warranties of the Participant.

he has been advised that he may be an “affiliate” within the meaning of Rule 144 under the Securities Act and in this connection the Company is relying in part on his representations set forth in this section;

if he is deemed an affiliate within the meaning of Rule 144 of the Securities Act, the Common Stock must be held indefinitely unless an exemption from any applicable resale restrictions is available or the Company files an additional registration statement (or a “re-offer prospectus”) with regard to such Common Stock and the Company is under no obligation to register the Common Stock (or to file a “re-offer prospectus”);

if he is deemed an affiliate within the meaning of Rule 144 of the Securities Act, he understands that the exemption from registration under Rule 144 will not be available unless (i) a public trading market then exists for the Common Stock, (ii) adequate information concerning the Company is then available to the public, and (iii) other terms and conditions of Rule 144 or any exemption therefrom are complied with and that any sale of the Common Stock may be made only in limited amounts in accordance with such terms and conditions.

Not an Employment or Service Agreement. Neither the execution of this Agreement nor the grant of RSUs hereunder constitute an agreement by the Company to employ or retain or to continue to employ or retain the Participant during the entire, or any portion of, the term of this Agreement.

Miscellaneous.

This Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective heirs, personal legal representatives, successors, trustees, administrators, distributees, devisees and legatees. The Company may assign to, and 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 or any Affiliate by which the Participant is employed to expressly assume and agree in writing to perform this Agreement. Notwithstanding the foregoing, the Participant may not assign this Agreement.

This award of RSUs shall not affect in any way the right or power of the Board or stockholders of the Company to make or authorize an adjustment, recapitalization or other change in the capital structure or the business of the Company, any merger or consolidation of the Company or subsidiaries, any issue of bonds, debentures, preferred or prior preference stock ahead of or affecting the Common Stock, the dissolution or liquidation of the Company, any sale or transfer of all or part of its assets or business or any other corporate act or proceeding.

The Participant agrees that the award of the RSUs hereunder is special incentive compensation and that it, any dividends paid thereon (even if treated as compensation for tax purposes) will not be taken into account as “salary” or “compensation” or “bonus” in determining the amount of any payment under any pension, retirement or profit-sharing plan of the Company or any life insurance, disability or other benefit plan of the Company.

No modification or waiver of any of the provisions of this Agreement shall be effective unless in writing and signed by the party against whom it is sought to be enforced.

This Agreement may be executed in one or more counterparts, all of which taken together shall constitute one contract.

The failure of any party hereto at any time to require performance by another party of any provision of this Agreement shall not affect the right of such party to require performance of that provision, and any waiver by any party of any breach of any provision of this Agreement shall not be construed as a waiver of any continuing or succeeding breach of such provision, a waiver of the provision itself, or a waiver of any right under this Agreement.

The headings of the sections of this Agreement have been inserted for convenience of reference only and shall in no way restrict or modify any of the terms or provisions hereof.

All notices, consents, requests, approvals, instructions and other communications provided for herein shall be in writing and validly given or made when delivered, or on the second succeeding business day after being mailed by registered or certified mail, whichever is earlier, to the persons entitled or required to receive the same, at the addresses set forth at the heading of this Agreement or to such other address as either party may designate by like notice. Notices to the Company shall be addressed to the Compensation Committee of the Board with a copy to General Counsel, MarketAxess Holdings Inc., 55 Hudson Yards, 15th Floor, New York, NY 10001.

This Agreement shall be construed, interpreted and governed and the legal relationships of the parties determined in accordance with the internal laws of the State of Delaware without reference to rules relating to conflicts of law.

Provisions of Plan and Guidelines Control. This Agreement is subject to all the terms, conditions and provisions of the Plan and the Guidelines, including, without limitation, the amendment provisions thereof, and to such rules, regulations and interpretations relating to the Plan and the Guidelines as may be adopted by the Committee and as may be in effect from time to time. The Plan and the Guidelines are incorporated herein by reference. A copy of the Plan and the Guidelines have been delivered to the Participant. If and to the extent that this Agreement conflicts or is inconsistent with the terms, conditions and provisions of the Plan and the Guidelines, the Plan and the Guidelines shall control, and this Agreement shall be deemed to be modified accordingly. Unless otherwise indicated, any capitalized term used but not defined herein shall have the meaning ascribed to such term in the Plan or the Guidelines. This Agreement contains the entire understanding of the parties with respect to the subject matter hereof (other than any other documents expressly contemplated herein or in the Plan or the Guidelines) and supersedes any prior agreements between the Company and the Participant.