Sun Microsystems Energizes Commitment to the Government Market with New Organizational Structure to Sun Microsystems Federal, Inc.

John Marselle Appointed Chief Operating Officer

July 13, 2005

Sun Microsystems, Inc. (NASDAQ: SUNW), today announced that its wholly owned subsidiary, Sun Microsystems Federal, Inc., continues to reinforce its dedication to the public sector with the appointment of John Marselle to the newly created position of Chief Operating Officer (COO). Moving forward with new leadership and a new customer-centric business model, Sun Federal is strategically aligned to build on its 20-year success in meeting the highly specialized needs of government customers.

In recent months, Sun Federal has made great strides in building its capabilities to service the growing government market, including the appointment of Clark Masters to President of Sun Federal and the grand opening of an iForce Solutions Center for Government at Sun Federal’s headquarters in McLean, Virginia. This newly energized management team, dedicated board of directors and Federal advisory board, positions Sun Federal superbly to support the ongoing growth of Sun’s government business.

“By remaining separate and secure from our commercial customer business, Sun Federal is able to put a laser-like focus on the U.S. government sector’s technology needs, building solid, more intimate relationships with our customers while delivering the most trusted and secure technology platform on the planet — featuring the Solaris (TM) Operating System,” said Masters. “John Marselle is a proven leader, and I am confident that his appointment to the newly created position of COO of Sun Federal will be a great advantage for our organization and for our customers.”

Prior to his most recent promotion to COO of Sun Federal, Marselle was the vice president of U.S. Government Strategic Sales. During his 20-year career at Sun, Marselle has held a variety of leadership roles, including vice president of General Contracting, vice president of the Americas and president of Sun Federal. A recognized industry advocate in the strategic use of information technology to gain competitive advantage, Marselle was awarded the FOSE Award, Fed 100 award and the National Center for Missing and Exploited Children’s Corporation Leadership Award. Marselle is the chairman of The Board of Directors for The USO of Metropolitan Washington and sits on The Board of The National Center for Missing and Exploited Children.

“I have known John for a long time and have the highest regard for him and his knowledge of the government marketplace,” said Dendy Young, Chairman and CEO of GTSI.

Sun Federal, a wholly owned subsidiary of Sun, identifies, captures and manages strategic opportunities, including securing government contracts that bring Sun’s products and solutions to government markets. Only Sun Federal can obligate Sun to accept government terms and conditions via contract.

About Sun Microsystems, Inc.

A singular vision — “The Network Is The Computer” — guides Sun in the development of technologies that power the world’s most important markets. Sun’s philosophy of sharing innovation and building communities is at the forefront of the next wave of computing: the Participation Age. Sun can be found in more than 100 countries and on the Web at

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