[144] MARKETAXESS HOLDINGS INC SEC Filing

Rhea-AI Filing Summary

MarketAxess Holdings, Inc. — Form 144 notice. The filer reported proposed sale activity involving 300 shares of Common Stock (equity compensation/RSU/PSU referenced 02/15/2026) with brokerage details listing Charles Schwab & Co., Inc.

The filing lists two prior transactions by Scott Pintoff selling 100 shares on 03/10/2026 for $18,493.00 and 100 shares on 04/10/2026 for $17,196.00. The notice primarily documents sale reporting and broker routing for resale of restricted/compensatory shares.

Insights

Securities Compliance Counsel

Form 144 documents proposed resale of compensatory shares and prior open-market dispositions.

Form 144 is a regulatory notice required when an affiliate proposes to sell restricted or control securities. The filing lists 300 shares linked to RSU / PSU grants dated 02/15/2026 and identifies Charles Schwab & Co., Inc. as the broker.

Timing and consummation of the proposed sale are not stated here; subsequent Form 4/144 amendments or broker confirmations may show execution details.

Equity Transactions Analyst

Reported prior executed dispositions show modest liquidity taken by the reporting person.

The filing records two past sales by Scott Pintoff: 100 shares on 03/10/2026 for $18,493.00 and 100 shares on 04/10/2026 for $17,196.00. Those entries reflect recent, small-scale dispositions.

These amounts provide context for the current 300-share notice; cash‑flow treatment and whether shares are being sold immediately are not disclosed in the excerpt.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Charles Schwab & Co., Inc. 3000 Schwab Way Westlake TX 76262	300	44097.00	35539453	05/11/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/15/2026	RSU / PSU - See remarks	MARKETAXESS HOLDINGS INC			300	02/15/2026	Equity Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Scott Pintoff 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001	MARKETAXESS HOLDINGS INC	03/10/2026	100	18493.00
Scott Pintoff 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001	MARKETAXESS HOLDINGS INC	04/10/2026	100	17196.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does MarketAxess (MKTX) Form 144 report?

It reports a proposed resale of 300 shares of common stock tied to RSU/PSU grants dated 02/15/2026. The filing also lists broker routing information and two prior small sales by the reporting person in March and April 2026.

Who is listed as the broker on the MKTX Form 144?

The broker is listed as Charles Schwab & Co., Inc. at 3000 Schwab Way, Westlake, TX. The filing includes broker routing for the proposed resale of the referenced shares.

How many shares did Scott Pintoff sell recently according to the filing?

The filing shows Scott Pintoff sold 100 shares on 03/10/2026 and 100 shares on 04/10/2026. Reported proceeds were $18,493.00 and $17,196.00, respectively.

Are the 300 shares in the Form 144 vested compensation or open‑market holdings?

The entry is labeled RSU / PSU - See remarks with the date 02/15/2026, indicating the shares are linked to equity compensation awards. The filing does not state whether they have been sold yet.