MarketAxess director receives 1,390-share RSU grant

Hoornweg Roberto reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Hoornweg Roberto reported acquisition or exercise transactions in this Form 4 filing.

MARKETAXESS HOLDINGS INC director Roberto Hoornweg received an equity award in the form of restricted stock units. On June 10, 2026, he was granted 1,390 shares of common stock at no cash cost under the company’s 2020 Equity Incentive Plan, increasing his directly held shares to 2,389. This is a compensation-related grant rather than an open-market purchase or sale.

Insider Trade Summary

Grant/Award: 1,390 shares

Grant/Award 1 txn

Insider Hoornweg Roberto

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.003 per share	1,390	$0.00	$0.00

Holdings After Transaction: Common Stock, par value $0.003 per share — 2,389 shares (Direct)

Footnotes (1)

1. F1. Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan.

Key Figures

RSU grant size: 1,390 shares Shares after grant: 2,389 shares Grant price per share: $0.00 per share +1 more

4 metrics

RSU grant size 1,390 shares Restricted stock units granted June 10, 2026

Shares after grant 2,389 shares Total common shares directly held after transaction

Grant price per share $0.00 per share Reported transaction price for the RSU grant

Transaction date June 10, 2026 Date of RSU grant to director Roberto Hoornweg

Key Terms

restricted stock units, 2020 Equity Incentive Plan, Grant, award, or other acquisition, Common Stock, par value $0.003 per share

4 terms

restricted stock units financial

"Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2020 Equity Incentive Plan financial

"Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan."

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

Common Stock, par value $0.003 per share financial

"security_title: Common Stock, par value $0.003 per share"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did MarketAxess (MKTX) director Roberto Hoornweg report in this Form 4?

Roberto Hoornweg reported an equity award of restricted stock units. He received 1,390 shares of MarketAxess common stock as a grant under the 2020 Equity Incentive Plan, increasing his directly held stake to 2,389 shares after the award.

Was the MarketAxess (MKTX) Form 4 transaction a market purchase or sale?

The Form 4 shows a grant, not a market trade. The 1,390 MarketAxess shares were awarded at a stated price of $0.00 per share as restricted stock units, reflecting compensation rather than an open-market purchase or sale transaction.

How many MarketAxess (MKTX) shares does Roberto Hoornweg hold after this grant?

After the reported transaction, Roberto Hoornweg directly holds 2,389 shares of MarketAxess common stock. This total includes the 1,390-share restricted stock unit grant reported in the Form 4 as a compensation-related award on June 10, 2026.

What type of equity award did MarketAxess (MKTX) grant to Roberto Hoornweg?

He received restricted stock units under MarketAxess’s 2020 Equity Incentive Plan. The filing describes the transaction code as a grant or award acquisition, covering 1,390 shares of common stock with a reported price per share of $0.00.

Does the MarketAxess (MKTX) Form 4 indicate any derivative or option exercises?

The Form 4 does not show any derivative or option exercises. It reports only a non-derivative grant of 1,390 shares of common stock as restricted stock units, with no derivative positions listed in the derivative summary section.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/12/2026 - 04:15 PM EDT Learn about SEC filing dates

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^*

Hoornweg Roberto

(Last) (First) (Middle)

C/O MARKETAXESS HOLDINGS INC.

55 HUDSON YARDS, 15TH FLOOR

(Street)

NEW YORK NEW YORK 10001

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026

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

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

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

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	06/10/2026		A		1,390	A	$0(1)	2,389	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 a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan.

	/s/ Patrick Wilson, as Attorney-in-Fact for Roberto Hoornweg	06/12/2026
	** 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.
* Form 4: SEC 1474 (03-26)