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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1278021	Marketaxess Holdings Inc	MKTX	Security Brokers, Dealers & Flotation Companies (6211)	522230784

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1704380	M Kevin Mcpherson	C/O Marketaxess Holdings Inc. 55 Hudson Yards, 15Th Floor New York NY 10001	Chief Revenue Officer	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock, Par Value $0.003 Per Share	Acquisiton	2024-02-15	3,653	$0.00	72,470	No	4	A	Direct
Common Stock, Par Value $0.003 Per Share	Disposition	2024-02-15	378	$216.21	72,092	No	4	F	Direct
Common Stock, Par Value $0.003 Per Share	Disposition	2024-02-16	2,000	$221.26	70,092	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	A	Direct
No	4	F	Direct
No	4	S	Direct

Footnotes

Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan. The restricted stock units shall vest 34% on February 15, 2025, 33% on February 15, 2026, and 33% on February 15, 2027.
Represents the surrender of shares to the Company to satisfy the reporting owner's tax withholding obligation upon the vesting of restricted stock units previously granted to the reporting owner.
The transactions were executed in multiple trades at prices ranging from $220.91 to $221.51. The price above reflects the weighted average sales price. Detailed information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, the Issuer or a security holder of the Issuer.