MarketAxess director logs internal share gifts

MarketAxess Holdings Inc. director Emily Hope Portney reported two bona fide gift transactions in common stock on 2026-08-12.

Rhea-AI Filing Summary

MarketAxess Holdings Inc. director Emily Hope Portney reported two bona fide gift transactions in common stock on 2026-08-12. One transaction acquired 2,085 shares held directly, and a second transaction disposed of 2,085 shares held indirectly “By GRAT.” Following these gifts, she held 4,259 direct and 1,571 indirect shares.

Insider Trade Summary

4,170 shares gifted

Gift 2 txns

Insider Portney Emily Hope

Role Director

Type	Security	Shares	Price	Value
Gift	Common Stock, par value $0.003 per share	2,085	$0.00	$0.00
Gift	Common Stock, par value $0.003 per share	2,085	$0.00	$0.00

Holdings After Transaction: Common Stock, par value $0.003 per share — 4,259 shares (Direct); Common Stock, par value $0.003 per share — 1,571 shares (Indirect, By GRAT)

Key Figures

Gifted shares (each leg): 2,085 shares Total shares reported as gifts: 4,170 shares Direct shares after transaction: 4,259 shares +1 more

4 metrics

Gifted shares (each leg) 2,085 shares Each of the two bona fide gift transactions on 2026-08-12

Total shares reported as gifts 4,170 shares GiftShares in transaction summary for 2026-08-12

Direct shares after transaction 4,259 shares Direct ownership of common stock following the gift acquisition

Indirect shares after transaction 1,571 shares Indirect ownership “By GRAT” following the gift disposition

Key Terms

Bona fide gift, GRAT, indirect ownership

3 terms

Bona fide gift regulatory

"The transaction code G is described as a “Bona fide gift”."

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

GRAT financial

"Indirect ownership is reported with the nature of ownership “By GRAT”."

indirect ownership financial

"One transaction lists ownership_type "indirect" with nature of ownership “By GRAT”."

FAQ

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

What did MarketAxess (MKTX) director Emily Hope Portney report in this Form 4?

Emily Hope Portney reported two bona fide gift transactions in MarketAxess common stock on 2026-08-12, involving both directly held shares and shares held indirectly through a GRAT.

How many MarketAxess (MKTX) shares were involved in Emily Hope Portney’s gifts?

The transactions involved a total of 4,170 shares of MarketAxess common stock, recorded as two separate 2,085-share bona fide gifts, one acquisition and one disposition.

What are Emily Hope Portney’s MarketAxess (MKTX) direct holdings after these transactions?

After the reported bona fide gift transactions, Emily Hope Portney directly held 4,259 shares of MarketAxess common stock, as stated in the post-transaction ownership field.

What are Emily Hope Portney’s indirect MarketAxess (MKTX) holdings after the Form 4 transactions?

Following the transactions, indirect holdings listed as “By GRAT” totaled 1,571 shares of MarketAxess common stock, reflecting shares held through that indirect ownership structure.

Were Emily Hope Portney’s MarketAxess (MKTX) transactions under a Rule 10b5-1 trading plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed (aff_10b5_one is false), so the reported bona fide gift transactions were not designated as occurring under a 10b5-1 trading plan.

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

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Available on EDGAR 08/13/2026 - 04:16 PM Accepted by SEC EDGAR 08/13/2026 - 04:15 PM 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^*

Portney Emily Hope

(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)
08/12/2026

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	08/12/2026		G		2,085	A	$0	4,259	D
Common Stock, par value $0.003 per share	08/12/2026		G		2,085	D	$0	1,571	I	By GRAT

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:

	/s/ Patrick Wilson as Attorney-in-Fact for Emily H. Portney	08/13/2026
	** 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)