MarketAxess Holdings Inc. (NASDAQ:MKTX), the operator of a leading electronic trading platform for fixed income securities, today announced that William Quan will join MarketAxess as Chief Technology Officer.

In this role, Mr. Quan will lead the company's global Technology organization with a mandate to advance innovation, support ongoing technology modernization, and strengthen execution across the enterprise. He will focus on building modern, resilient, and scalable platforms, setting high engineering standards and implementing AI and advanced data capabilities across MarketAxess.

"William brings deep technical expertise and a strong execution mindset that will help us accelerate platform modernization and more deeply embed AI and advanced analytics across our products and workflows," said Dean Berry, Chief Operating Officer of MarketAxess. "His leadership will be instrumental as we continue to build intelligent, product-led solutions that enable our clients to trade more efficiently and confidently in increasingly complex markets."

Mr. Quan brings more than two decades of global experience leading technology, AI, and digital transformation across financial services and platform businesses. Most recently, he served as Chief Technology Officer of Fleete Group, a Macquarie Asset Management portfolio company, where he led the development of an AI-enabled SaaS platform and a global engineering organization. Previously, he held senior technology leadership roles at Amazon Web Services, advising global financial institutions on cloud-native and AI-driven platforms. Prior to that, he spent over a decade at J.P. Morgan and Deutsche Bank leading electronic trading, AI, and digital platform initiatives across global markets.

"I am delighted to be joining MarketAxess and partnering with customers across the dealer and investor community," said William Quan. "As fixed-income markets continue to expand across electronic trading and distribution channels, there is a compelling opportunity to advance product‑led innovation supported by leading technology capabilities. This focus will drive the delivery of efficient, high‑quality customer solutions across pricing, execution, and intelligent workflows enhanced by AI and advanced data analytics."

As Chief Technology Officer, Mr. Quan will join the Company's Executive Committee and report directly to Dean Berry.

About MarketAxess

MarketAxess (NASDAQ:MKTX) operates a leading electronic trading platform that delivers greater trading efficiency, a diversified pool of liquidity and significant cost savings to institutional investors and broker-dealers across the global fixed-income and other markets. Approximately 2,100 firms leverage MarketAxess' patented technology to efficiently trade fixed-income securities. Our automated and algorithmic trading solutions, combined with our integrated and actionable data offerings, help our clients make faster, better-informed decisions on when and how to trade on our platform. MarketAxess' award-winning Open Trading^® marketplace is widely regarded as the preferred all-to-all trading solution in the global credit markets. Founded in 2000, MarketAxess connects a robust network of market participants through an advanced full trading lifecycle solution that includes automated trading solutions, intelligent data and index products and a range of post-trade services. Learn more at www.marketaxess.com and on X @MarketAxess.

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements, including statements within the meaning of the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995 with respect to the Company's strategy and business outcomes. These and other statements that relate to future results and events are based on MarketAxess' current expectations. Many factors could cause actual results to differ materially from the forward-looking statements in this press release. Please refer to the periodic filings MarketAxess makes with the Securities and Exchange Commission. These filings identify and address other important risks and uncertainties that could cause events and results to differ materially from those contained in the forward-looking statements set forth in this press release. The Company undertakes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise. More information about these and other factors affecting MarketAxess' business and prospects is contained in MarketAxess' periodic filings with the Securities and Exchange Commission and can be accessed at www.marketaxess.com.

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INVESTOR RELATIONS

Stephen Davidson

MarketAxess Holdings Inc.

+1 212 813 6313

sdavidson2@marketaxess.com

MEDIA RELATIONS

Marisha Mistry

MarketAxess Holdings Inc.

+1 917 267 1232

mmistry@marketaxess.com

William Quan to Join MarketAxess as Chief Technology Officer