# EDGAR Filing Document

**Accession Number:** 0001278021
**File Stem:** 0001193125-26-161620
**Filing Date:** 2026-4
**Character Count:** 4951
**Document Hash:** cdd7b9f835b37dc17715b4c6c57d0e5e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-161620.hdr.sgml**: 20260417

**ACCESSION NUMBER**: 0001193125-26-161620

**CONFORMED SUBMISSION TYPE**: 8-K/A

**PUBLIC DOCUMENT COUNT**: 9

**CONFORMED PERIOD OF REPORT**: 20260122

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**FILED AS OF DATE**: 20260417

**DATE AS OF CHANGE**: 20260417

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MARKETAXESS HOLDINGS INC
- **CENTRAL INDEX KEY:** 0001278021
- **STANDARD INDUSTRIAL CLASSIFICATION:** SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 522230784
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34091
- **FILM NUMBER:** 26871983

**BUSINESS ADDRESS:**
- **STREET 1:** 55 HUDSON YARDS, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10001
- **BUSINESS PHONE:** 212-831-6000

**MAIL ADDRESS:**
- **STREET 1:** 55 HUDSON YARDS, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10001

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARKETAXESS HOLDING INC
- **DATE OF NAME CHANGE:** 20040129

?xml version='1.0' encoding='ASCII'? 8-K/A

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549**

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## FORM 8-K/A

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**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported):** January 22, 2026<br>

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MARKETAXESS HOLDINGS INC.

**(Exact name of Registrant as Specified in Its Charter)**

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| | | |
|:---|:---|:---|
| Delaware | 001-34091 | 52-2230784 |
| **(State or Other Jurisdiction<br>of Incorporation)** | **(Commission File Number)** | **(IRS Employer<br>Identification No.)** |
| 55 Hudson Yards<br>15th Floor |  |  |
| New York**,** New York |  | 10001 |
| **(Address of Principal Executive Offices)** |  | **(Zip Code)** |

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**Registrant's Telephone Number, Including Area Code:** (212) 813-6000<br>

**(Former Name or Former Address, if Changed Since Last Report)**

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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:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

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| | | |
|:---|:---|:---|
| **<br>Title of each class** | **Trading<br>Symbol(s)** | **<br>Name of each exchange on which registered** |
| Common Stock, $0.003 par value | MKTX | Nasdaq Global Select Market |

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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. ☐

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**Explanatory Note**

On January 26, 2026, MarketAxess Holdings Inc. (the "Company") filed a Current Report on Form 8-K announcing the election by the Company's Board of Directors (the "Board") of Douglas A. Cifu and Kenneth T. Schiciano to serve on the Board, effective March 1, 2026. At the time of their elections, the Board had not yet determined which Board committees Messrs. Cifu and Schiciano would serve on. This Form 8-K/A is being filed for the purpose of providing this information.

## Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers
(d) Election of Directors

On April 15, 2026, the Board appointed Mr. Cifu to serve on the Board's Compensation and Talent Committee and Finance Committee, and appointed Mr. Schiciano to serve on the Audit Committee, with such appointments to take effect on May 1, 2026.

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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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| | | | |
|:---|:---|:---|:---|
|  |  |  | MARKETAXESS HOLDINGS INC. |
| Date: | April 17, 2026 | By:  | /s/ Scott Pintoff |
|  |  |  | Name: Scott Pintoff<br>Title: General Counsel & Corporate Secretary |

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