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MKTX SEC Filing News — MarketAxess Holdings Inc.

Latest SEC filings for MarketAxess Holdings Inc. (MKTX) explained in plain English: insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). Sourced directly from SEC EDGAR.

What you’re looking at: Each item below is parsed from an actual SEC filing. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.
Form 8-K/A Amended Material Company Update 2026-04-17

MKTX filed amended 8-K — material company event

MARKETAXESS HOLDINGS INC filed an amended 8-K with the SEC reporting a material event. Filing excerpt: XBRL Viewer

Filing: 8-K/A (Material Event Amendment)
Form 4 Insider Selling 2026-04-10

MKTX insider Pintoff Scott (General Counsel and Secretary) sold 100 shares (~$17.2K)

Pintoff Scott, listed as General Counsel and Secretary at MARKETAXESS HOLDINGS INC, reported an open-market sale of 100 MKTX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Pintoff Scott (General Counsel and Secretary) Shares: 100 Est. Value: $17.2K
Form 4 Tax / Compensation Filing 2026-04-06

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

CONCANNON CHRISTOPHER R (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: CONCANNON CHRISTOPHER R (Director, Chief Executive Officer) Shares: 349
Form 4 Insider Selling 2026-03-10

MKTX insider Pintoff Scott (General Counsel and Secretary) sold 100 shares (~$18.5K)

Pintoff Scott, listed as General Counsel and Secretary at MARKETAXESS HOLDINGS INC, reported an open-market sale of 100 MKTX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Pintoff Scott (General Counsel and Secretary) Shares: 100 Est. Value: $18.5K
Form 4 Tax / Compensation Filing 2026-03-02

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

Cifu Douglas A (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Cifu Douglas A (Director) Shares: 259
Form 4 Tax / Compensation Filing 2026-03-02

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

SCHICIANO KENNETH T (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: SCHICIANO KENNETH T (Director) Shares: 259
Form 4 Tax / Compensation Filing 2026-03-02

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

Panchal Naineshkumar Shantilal (Chief Information Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Panchal Naineshkumar Shantilal (Chief Information Officer) Shares: 1,470
Form 10-K Annual Report 2026-02-24

MKTX filed Annual Report (10-K)

MARKETAXESS HOLDINGS INC filed its annual report with the SEC. This report includes audited financial statements, business overview, risk factors, and management discussion.

Filing: 10-K (Annual Report)
Form 8-K Material Company Update 2026-02-17

MKTX filed 8-K — material company event

MARKETAXESS HOLDINGS INC filed an 8-K with the SEC reporting a material event. Filing excerpt: XBRL Viewer

Filing: 8-K (Material Event)
Form 4 Tax / Compensation Filing 2026-02-17

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

CONCANNON CHRISTOPHER R (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: CONCANNON CHRISTOPHER R (Director, Chief Executive Officer) Shares: 10,900
Form 4 Tax / Compensation Filing 2026-02-17

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

Fiszel Bieler Ilene (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Fiszel Bieler Ilene (Chief Financial Officer) Shares: 5,444
Form 4 Tax / Compensation Filing 2026-02-17

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

Pintoff Scott (General Counsel and Secretary) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Pintoff Scott (General Counsel and Secretary) Shares: 4,712
Form 4 Tax / Compensation Filing 2026-02-17

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

Panchal Naineshkumar Shantilal (Chief Information Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Panchal Naineshkumar Shantilal (Chief Information Officer) Shares: 4,808
Form 4 Tax / Compensation Filing 2026-02-17

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

McPherson Kevin M (Chief Revenue Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: McPherson Kevin M (Chief Revenue Officer) Shares: 7,342
Form 4 Tax / Compensation Filing 2026-02-17

MKTX insider Form 4 filed for equity award, exercise, or tax withholding

Mirwani Nitin A (Chief Accounting Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Mirwani Nitin A (Chief Accounting Officer) Shares: 1,766
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