UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

Current Report

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 7, 2023

MarketAxess Holdings Inc.

(Exact Name of Registrant as Specified in its Charter)

55 Hudson Yards

New York, New York 10001

(Address of principal executive offices, including zip code)

(212) 813-6000

(Registrant’s telephone number, including area code)

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

On June 7, 2023, MarketAxess Holdings Inc. (the “Company”) held its 2023 Annual Meeting of Stockholders (the “2023 Annual Meeting”). A total of 34,890,401 shares of common stock were present or represented by proxy at the 2023 Annual Meeting, representing 93.33% of the issued and outstanding shares entitled to vote at the meeting. The proposals voted upon and the final results of the vote were as follows:

Proposal 1 — Election of Directors. The results were as follows:

Proposal 2 — Ratification of the selection of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2023. The results were as follows:

Proposal 3 — Advisory vote on the compensation of the Company’s named executive officers as disclosed in the proxy statement pursuant to the SEC’s compensation disclosure rules (referred to as the “say-on-pay” proposal). The results were as follows:

Proposal 4 — Advisory vote on the frequency of future advisory votes on the compensation of the Company’s named executive officers. The results are below. One year received the greatest number of votes. Based on these results, and consistent with the Board’s recommendation, the Board has determined that the Company will hold an advisory vote on the compensation of its named executive officers on an annual basis until the next stockholder advisory vote on the frequency of the advisory vote on the compensation of its named executive officers.

For more information on the 2023 Annual Meeting and the foregoing proposals, see the Company’s 2023 Proxy Statement.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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