Stephen P. Casper - 08 Sep 2025 Form 4 Insider Report for MARKETAXESS HOLDINGS INC (MKTX)

Reporting relationship: Director
Issuer ticker: MKTX
Reported as of: 08 Sep 2025
Net transaction value: -$298,544
SEC form: 4
Accepted by SEC: 09 Sep 2025, 17:15:04 UTC
Prior SEC filing: 05 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Patrick Wilson, as Attorney-in-Fact for Stephen Casper

Key filing fact

Stephen P. Casper filed Form 4 for MARKETAXESS HOLDINGS INC (MKTX) on 09 Sep 2025.

Key facts

This page summarizes Stephen P. Casper's Form 4 filing for MARKETAXESS HOLDINGS INC (MKTX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 09 Sep 2025, 17:15.

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 0001296969 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 Stephen Casper
Signature date: 09 Sep 2025

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

MKTX transaction

Sale

MKTX holding

No transaction description listed

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