Antonio L. Delise - Jan 31, 2022 Form 4 Insider Report for MARKETAXESS HOLDINGS INC (MKTX)

Role: Global Head of Corp. Dev.
Signature: /s/ Jason Edelstein, as Attorney-in-Fact for Antonio L. DeLise
Stock symbol: MKTX
Transactions as of: Jan 31, 2022
Transactions value $: -$475,382
Form type: 4
Date filed: 2/2/2022, 03:15 PM
Previous filing: Aug 17, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MKTX	Common Stock, par value $0.003 per share	Award	$0	+1.27K	+4.7%	$0.00	28.4K	Jan 31, 2022	Direct	F1
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$117K	-341	-1.2%	$344.48	28K	Jan 31, 2022	Direct	F2
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$106K	-308	-1.1%	$344.48	27.7K	Jan 31, 2022	Direct	F2
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$74.8K	-217	-0.78%	$344.48	27.5K	Jan 31, 2022	Direct	F3
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$48.6K	-141	-0.51%	$344.48	27.4K	Jan 31, 2022	Direct	F4
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$18.6K	-54	-0.2%	$344.48	27.3K	Jan 31, 2022	Direct	F4
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$43.4K	-126	-0.46%	$344.48	27.2K	Jan 31, 2022	Direct	F3
transaction	MKTX	Common Stock, par value $0.003 per share	Tax liability	-$66.5K	-193	-0.71%	$344.48	27K	Jan 31, 2022	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Antonio L. Delise is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id	Content
F1	Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan. The restricted stock units will vest in three installments of 34% on January 31, 2023, and 33% on each of January 31, 2024 and January 31, 2025.
F2	Represents the surrender of shares to the Company to satisfy Mr. DeLise's tax withholding obligation upon the receipt of vested restricted stock units that had been previously deferred by Mr. DeLise.
F3	Represents the surrender of shares to the Company to satisfy Mr. DeLise's tax withholding obligation upon the vesting of restricted stock units previously granted to Mr. DeLise.
F4	Represents the surrender of shares to the Company to satisfy Mr. DeLise's tax withholding obligation upon the vesting of shares of restricted stock previously granted to Mr. DeLise.