MARKETAXESS HOLDINGS INC (MKTX)

Ilene J. Fiszel Bieler PSU – 2023 Performance Stock Unit Summary

Richard M. McVey Equity

Ilene J. Fiszel Bieler Sign-On Equity Award – MarketAxess Holdings Inc. 2020 Equity Incentive Plan (Grant FV $750,000)

Ilene J. Fiszel Bieler — Offer Letter | Original offer letter contemplated a $1.15 million cash make-whole award and a $2.7 million equity make-whole award.; Amendment to the Offer Letter states that the Make-Whole Awards will be reduced to zero due to arrangements with her former employer.; Sign-on equity award with a grant date value of $750,000 will be granted on June 3, 2024.; The Sign-On Award will consist of 50% restricted stock units (RSUs) vesting in three equal annual installments.; The Sign-On Award will consist of 50% performance stock units (PSUs) cliff-vesting on the third anniversary of the award date.; PSU performance criteria are similar to other executive officers, with a performance period from January 1, 2025, to December 31, 2026.

Ilene J. Fiszel Bieler — Offer Letter | Base salary of $450,000 per year.; Target annual cash bonus of $800,000 for calendar year 2024.; Target year-end equity award value of $1.15 million, comprised equally of time-based (RSUs or options) and performance-based (PSUs) awards.; Time-based equity vests in three equal annual installments over three years.; Performance-based equity expected to cliff vest on the third anniversary, subject to performance criteria.; Receive a $1.15 million cash make-whole award and a $2.7 million equity make-whole award.; Cash Make-Whole Award is payable soon after the Effective Date and may be recouped if she resigns (other than for Valid Reason) or is terminated for Cause before the first anniversary of the Effective Date.