MarketAxess (NASDAQ: MKTX) CIO covers taxes by surrendering shares

Rhea-AI Filing Summary

MarketAxess Holdings Inc. Chief Information Officer Naineshkumar Shantilal Panchal reported a tax-related share disposition. On the vesting of previously granted restricted stock units, he surrendered 1,470 shares of common stock to the company to satisfy his tax withholding obligation at $192 per share. Following this tax-withholding disposition, he directly holds 11,331 shares of MarketAxess common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Panchal Naineshkumar Shantilal

Role Chief Information Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, par value $0.003 per share	1,470	$192.00	$282K

Holdings After Transaction: Common Stock, par value $0.003 per share — 11,331 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Panchal Naineshkumar Shantilal

(Last) (First) (Middle)

C/O MARKETAXESS HOLDINGS INC.

55 HUDSON YARDS, 15TH FLOOR

(Street)

NEW YORK NY 10001

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MARKETAXESS HOLDINGS INC [ MKTX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Information Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.003 per share	03/01/2026		F(1)		1,470	D	$192	11,331	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the surrender of shares to the Company to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units previously granted to the Reporting Person.

	/s/ Patrick Wilson as Attorney-in-Fact for Naineshkumar S. Panchal	03/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did MarketAxess (MKTX) report for its CIO?

MarketAxess reported that its Chief Information Officer surrendered 1,470 common shares to the company. This was done to cover tax withholding obligations triggered by the vesting of previously granted restricted stock units, rather than an open-market sale of shares.

Was the MarketAxess (MKTX) CIO’s Form 4 transaction an open-market stock sale?

No, the transaction was not an open-market sale. The CIO surrendered 1,470 shares back to MarketAxess to satisfy tax withholding due on vested restricted stock units, as explained in the footnote accompanying the reported Form 4 transaction.

How many MarketAxess (MKTX) shares did the CIO surrender and at what price?

The CIO surrendered 1,470 shares of MarketAxess common stock at a reported price of $192 per share. This surrender was classified as a tax-withholding disposition associated with the vesting of restricted stock units previously granted to him.

How many MarketAxess (MKTX) shares does the CIO own after this Form 4 transaction?

After the tax-withholding disposition, the CIO directly owns 11,331 MarketAxess common shares. This post-transaction holding reflects the shares remaining in his direct ownership after surrendering 1,470 shares to the company to cover his tax obligations.

What does the Form 4 footnote say about the MarketAxess (MKTX) CIO transaction?

The footnote explains the reported shares represent a surrender to MarketAxess to satisfy the reporting person’s tax withholding obligation. This obligation arose upon the vesting of restricted stock units that had been previously granted, clarifying it as a tax-related disposition.

How is the MarketAxess (MKTX) CIO’s Form 4 transaction classified by the SEC codes?

The transaction is coded “F,” indicating payment of exercise price or tax liability by delivering securities. It is described as a tax-withholding disposition of non-derivative common stock, rather than a standard buy or sell trade in the open market.