MarketAxess director granted 1,390 restricted shares

Gibson Kourtney reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Gibson Kourtney reported acquisition or exercise transactions in this Form 4 filing.

MarketAxess Holdings Inc. director Kourtney Gibson received a grant of 1,390 shares of common stock in the form of restricted stock units under the company’s 2020 Equity Incentive Plan on June 10, 2026. These were granted at no cash cost, increasing her direct holdings to 4,542 shares.

Insider Trade Summary

Grant/Award: 1,390 shares

Grant/Award 1 txn

Insider Gibson Kourtney

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 — 4,542 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 Holdings after transaction: 4,542 shares Security type: Common Stock, par value $0.003 per share

3 metrics

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

Holdings after transaction 4,542 shares Total direct common stock holdings following grant

Security type Common Stock, par value $0.003 per share Underlying security for restricted stock units

Key Terms

restricted stock units, 2020 Equity Incentive Plan, Form 4

3 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."

Form 4 regulatory

"This transaction and resulting holdings were disclosed in a Form 4 insider filing."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did MarketAxess (MKTX) report for Kourtney Gibson?

MarketAxess reported that director Kourtney Gibson received 1,390 restricted stock units of common stock as an equity grant under the 2020 Equity Incentive Plan, rather than buying shares in the open market. This award increased her direct ownership in the company.

How many MarketAxess (MKTX) shares did Kourtney Gibson hold after the grant?

After receiving 1,390 restricted stock units, director Kourtney Gibson’s direct holdings in MarketAxess common stock rose to 4,542 shares. This total reflects the position reported immediately following the equity award transaction disclosed in the Form 4 filing.

Was Kourtney Gibson’s MarketAxess (MKTX) transaction an open-market purchase?

No, the transaction was not an open-market purchase. It was a grant of 1,390 restricted stock units at no cash cost to Kourtney Gibson, provided as part of MarketAxess’s 2020 Equity Incentive Plan rather than a voluntary share purchase on the market.

What type of security did Kourtney Gibson receive from MarketAxess (MKTX)?

She received restricted stock units linked to MarketAxess common stock, par value $0.003 per share. These units were granted under the company’s 2020 Equity Incentive Plan, representing equity-based compensation that typically vests over time according to plan terms.

When did the MarketAxess (MKTX) restricted stock unit grant to Kourtney Gibson occur?

The grant of 1,390 restricted stock units to director Kourtney Gibson occurred on June 10, 2026. This transaction date is specifically identified in the Form 4, which details the nature of the grant and her resulting total direct share ownership.

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^*

Gibson Kourtney

(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)	4,542	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 Kourtney Gibson	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)