MarketAxess (MKTX) General Counsel Scott Pintoff sells 100 shares under plan

Rhea-AI Filing Summary

MARKETAXESS HOLDINGS INC General Counsel and Secretary Scott Pintoff reported a sale of 100 shares of common stock on 2026-08-10 at $162.60 per share in an open market or private transaction. Following this transaction, he directly holds 11,586 shares of MarketAxess common stock. The transaction was affirmed as made pursuant to a Rule 10b5-1 trading plan.

Insider Trade Summary 10b5-1

Net Seller: 100 shares

Net Sell 1 txn

Insider Pintoff Scott

Role General Counsel and Secretary

Sold 100 shs ($16K)

Type	Security	Shares	Price	Value
Sale	Common Stock, par value $0.003 per share	100	$162.60	$16K

Holdings After Transaction: Common Stock, par value $0.003 per share — 11,586 shares (Direct)

Key Figures

Shares sold: 100 shares Sale price per share: $162.60 Shares held after transaction: 11,586 shares +1 more

4 metrics

Shares sold 100 shares Common stock sale on 2026-08-10

Sale price per share $162.60 Per-share price for the 2026-08-10 sale

Shares held after transaction 11,586 shares Direct ownership after reported sale

Net shares sold 100 shares Net buy/sell shares in this Form 4

Key Terms

Rule 10b5-1 trading plan, Common Stock, par value $0.003 per share, Sale in open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"The transaction was affirmed as made pursuant to a Rule 10b5-1 trading plan."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Common Stock, par value $0.003 per share financial

"security_title is Common Stock, par value $0.003 per share."

Sale in open market or private transaction financial

"transaction_code_description states Sale in open market or private transaction."

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/10/2026 - 04:15 PM Accepted by SEC EDGAR 08/10/2026 - 04:15 PM Learn about SEC filing dates

FAQ

What insider transaction did MARKETAXESS (MKTX) report for Scott Pintoff?

Scott Pintoff, General Counsel and Secretary, sold 100 shares of MarketAxess common stock on 2026-08-10 at $162.60 per share in an open market or private transaction.

How many MARKETAXESS (MKTX) shares does Scott Pintoff hold after this sale?

After the reported transaction, Scott Pintoff directly holds 11,586 shares of MarketAxess common stock. This figure reflects his post-transaction direct ownership as disclosed in the Form 4 filing.

Was the MKTX insider sale by Scott Pintoff under a Rule 10b5-1 plan?

Yes. The filing indicates the transaction was affirmed under a Rule 10b5-1 trading plan, meaning the trade was executed pursuant to a pre-established, pre-arranged trading arrangement.

What price did Scott Pintoff receive per MKTX share in the reported sale?

Scott Pintoff sold 100 shares of MarketAxess common stock at a price of $162.60 per share. The transaction is described as a sale in an open market or private transaction.

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

Scott Pintoff is reported as an officer of MarketAxess, serving as General Counsel and Secretary. The Form 4 identifies him in this capacity in connection with the disclosed stock sale.

How many MKTX shares did Scott Pintoff sell in this Form 4 filing?

The Form 4 shows that Scott Pintoff sold 100 shares of MarketAxess common stock. This transaction reduced his direct holdings to 11,586 shares after completion.

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)
08/10/2026

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	08/10/2026		S		100	D	$162.6	11,586	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/ Patrick Wilson as Attorney-in-Fact for Scott Pintoff	08/10/2026
	** 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)