Roberto Hoornweg - 10 Jun 2026 Form 4 Insider Report for MARKETAXESS HOLDINGS INC (MKTX)

Reporting relationship: Director
Issuer ticker: MKTX
Reported as of: 10 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 12 Jun 2026, 16:15:03 UTC
Prior SEC filing: 05 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Patrick Wilson, as Attorney-in-Fact for Roberto Hoornweg

Key filing fact

Roberto Hoornweg filed Form 4 for MARKETAXESS HOLDINGS INC (MKTX) on 12 Jun 2026.

Key facts

This page summarizes Roberto Hoornweg's Form 4 filing for MARKETAXESS HOLDINGS INC (MKTX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 12 Jun 2026, 16:15.

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

CIK 0002053363 Primary reporting owner

Relationship: Director
Address: C/O MARKETAXESS HOLDINGS INC., 55 HUDSON YARDS, 15TH FLOOR, NEW YORK
Signature: /s/ Patrick Wilson, as Attorney-in-Fact for Roberto Hoornweg
Signature date: 12 Jun 2026

Shares, units, or other non-derivative securities reported in this filing.

MKTX transaction

Award

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Explanation of responses 1 footnote

Footnote F1

Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan.