Christopher R Concannon

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
31 Jan 25	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	217.77	243	52.92 k	42,772
31 Jan 25	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	217.77	585	127.40 k	43,015
29 Jan 25	MKTX MarketAxess	Common Stock, par value $0.003 per share	Grant	Acquire A	No	No	0	1,622	0.00	43,600
15 Feb 24	MKTX MarketAxess	Common Stock, par value $0.003 per share	Grant	Acquire A	No	No	0	3,991	0.00	41,978
15 Feb 24	MKTX MarketAxess	Stock Option Common Stock	Grant	Acquire A	No	No	220.5	11,503	2.54 mm	11,503
31 Jan 24	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	274.33	459	125.92 k	37,987
31 Jan 24	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	274.33	305	83.67 k	38,446
31 Jan 24	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	274.33	195	53.49 k	38,751
22 Jan 24	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	265.93	4,042	1.07 mm	38,946
22 Jan 24	MKTX MarketAxess	Common Stock, par value $0.003 per share	Payment of exercise	Dispose F	No	No	265.93	5,077	1.35 mm	42,988

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.