William Quan - 01 May 2026 Form 4 Insider Report for MARKETAXESS HOLDINGS INC (MKTX)

Reporting relationship: Chief Technology Officer
Issuer ticker: MKTX
Reported as of: 01 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 04 May 2026, 16:15:03 UTC
Prior SEC filing: 16 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Patrick Wilson as Attorney-in-Fact for William Quan

Key filing fact

William Quan filed Form 4 for MARKETAXESS HOLDINGS INC (MKTX) on 04 May 2026.

Key facts

This page summarizes William Quan's Form 4 filing for MARKETAXESS HOLDINGS INC (MKTX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 04 May 2026, 16:15.

Change

Previous filing in this sequence was filed on 16 Mar 2026.
Current net transaction value: $0.

Research use

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.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002118548 Primary reporting owner

Quan William

Relationship: Chief Technology Officer
Address: C/O MARKETAXESS HOLDINGS INC., 55 HUDSON YARDS, 15TH FLOOR, NEW YORK
Signature: /s/ Patrick Wilson as Attorney-in-Fact for William Quan
Signature date: 04 May 2026

Reported non-derivative transactions

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

MKTX transaction

Common Stock, par value $0.003 per share

Award

Transaction value
Shares: +218
Change %
Price: $0.000000^*
Shares after: 218
Date: 01 May 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan. The restricted stock units shall vest in three substantially equal installments on May 1, 2027, May 1, 2028, and May 1, 2029.