MarketAxess (NASDAQ: MKTX) counsel sells 100 shares in open trade

Rhea-AI Filing Summary

MarketAxess Holdings Inc. reported that its General Counsel and Secretary, Scott Pintoff, sold 100 shares of common stock in an open-market transaction. The sale took place on May 11, 2026 at a price of $146.99 per share.

Following this transaction, Pintoff directly holds 11,886 shares of MarketAxess common stock. The sale represents a small portion of his reported direct holdings and appears as a routine insider disposition rather than a large position change.

Insider Trade Summary 10b5-1

Net Seller: 100 shares ($14,699)

Net Sell 1 txn

Insider Pintoff Scott

Role General Counsel and Secretary

Sold 100 shs ($15K)

Type	Security	Shares	Price	Value
Sale	Common Stock, par value $0.003 per share	100	$146.99	$15K

Holdings After Transaction: Common Stock, par value $0.003 per share — 11,886 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 100 shares Sale price per share: $146.99 per share Shares owned after transaction: 11,886 shares +1 more

4 metrics

Shares sold 100 shares Open-market sale on May 11, 2026

Sale price per share $146.99 per share Common Stock, par value $0.003

Shares owned after transaction 11,886 shares Direct holdings following May 11, 2026 sale

Net shares sold 100 shares Net-sell direction in transaction summary

Key Terms

open-market sale, Common Stock, par value $0.003 per share, transaction code "S", net-sell

4 terms

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock, par value $0.003 per share financial

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

transaction code "S" financial

"transaction_code: "S" for sale in open market"

net-sell financial

"netBuySellDirection: "net-sell" in transactionSummary"

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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).

X

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^*

Pintoff Scott

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel and Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

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	05/11/2026		S		100	D	$146.99	11,886	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:

	/s/ Conor Colasurdo as Attorney-in-Fact for Scott Pintoff	05/11/2026
	** 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)

FAQ

What insider transaction did MKTX report for Scott Pintoff?

MarketAxess reported that General Counsel and Secretary Scott Pintoff sold 100 shares of common stock. The transaction was an open-market sale executed on May 11, 2026 at a price of $146.99 per share.

How many MarketAxess (MKTX) shares did Scott Pintoff sell and at what price?

Scott Pintoff sold 100 shares of MarketAxess common stock. The sale was completed at $146.99 per share, according to the Form 4 insider transaction data for May 11, 2026.

How many MKTX shares does Scott Pintoff own after this sale?

After the reported sale, Scott Pintoff directly owns 11,886 shares of MarketAxess common stock. This figure reflects his holdings immediately following the 100-share open-market disposition on May 11, 2026.

What role does Scott Pintoff hold at MarketAxess (MKTX)?

Scott Pintoff serves as General Counsel and Secretary at MarketAxess Holdings Inc. His Form 4 filing reflects insider activity in MarketAxess common stock associated with his position as a senior corporate officer.

Was the MKTX insider transaction classified as a buy or sell?

The MarketAxess insider transaction was classified as a sell. The Form 4 identifies the transaction code as “S” and describes it as an open-market sale of 100 common shares by Scott Pintoff.