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Instinet Appoints New Heads For International And U.S. Divisions

Date 19/12/2003

Instinet Group Incorporated (Nasdaq: INGP) announced today that Natan Tiefenbrun, currently serving as co-head of Instinet, the Institutional Broker, will be promoted to President of the International Division of Instinet. In addition, Mike Plunkett, also currently serving as co-head of Instinet, will be promoted to President of the U.S. Division of Instinet. Both individuals will continue to report to Ed Nicoll, CEO of Instinet Group Incorporated.

"Looking ahead, Instinet's international operations will continue as a vital and growing part of our business success. We will remain a leading global player in the brokerage business. We are fortunate to have someone like Natan to run this effort. He is one of the most innovative and sophisticated thinkers on international brokerage issues, and has been a key part of our senior management team. In addition, I cannot think of a better leader of our U.S. brokerage operations than Mike Plunkett. Mike is an extremely knowledgeable and insightful expert on our nation's markets and is building an extremely strong and hard-working agency sales business," said Edward J. Nicoll.

Ken Tregidgo, who serves as COO of Instinet's European Operations, will continue in this capacity and report to Mr. Tiefenbrun. Tony Mackay, who serves as COO of Instinet's Asian operations, will also continue in this capacity and report to Mr. Tiefenbrun. Messrs. Tiefenbrun, Tregidgo, and Mackay will serve as the core management team for all Instinet's international operations.

"It's an honor to assume this new responsibility as head of Instinet's international operations," said Mr. Tiefenbrun. "I especially look forward to working with Ken and Tony, who have done so much to build our strong worldwide presence. Along with their teams in Europe and Asia, I am eager to grow Instinet's business and continue to serve our institutional clients worldwide with superior international equity products and services," said Mr. Tiefenbrun.

"I look forward to leading our U.S. brokerage operations and offering our customers the advantages of our unconflicted services and technologically advanced products. More than ever, our customers are looking to us as the leader in pure agency markets, without the conflicts at the heart of the human-intermediated, manual markets and brokerage houses that trade for their own accounts as well as for customers," said Mr. Plunkett.

Since joining the Company twelve years ago as a sales trader, Mr. Plunkett has held several positions at Instinet, ranging from a manager in hedge fund and institutional equities to co-head of the Lynch, Jones & Ryan desk. Mr. Tiefenbrun began at Instinet's London office in 1993, and since moving to New York in 2000, has overseen the Company's business strategy in Global Portfolio Trading & related research, Global Crossing and Transaction Cost Analytics.

About Instinet
Instinet, through affiliates, is the largest global electronic agency securities broker and has been providing investors with electronic trading solutions for more than 30 years. Our services enable buyers and sellers worldwide to trade securities directly and anonymously with each other, have the opportunity to gain price improvement for their trades and lower their overall trading costs. Instinet is part of the Reuters family of companies.