Micromuse appoints Lloyd Carney as chairman of board, chief executive officer

Micromuse Inc, the leading provider of business and service assurance software, today announced the appointment of Lloyd Carney as chairman of the board and chief executive officer, effective immediately.

Carney will be based at Micromuse`s global headquarters in San Francisco, California. Mike Luetkemeyer, who has served as Interim CEO since 1 January 2003, will continue in his role as chief financial officer and as a member of the Micromuse board of directors. Dave Schwab, who has served as Micromuse`s non-executive chairman of the board since 1 January 2003, will become lead independent director of the board.

A 20-year veteran of the networking industry, Carney joins Micromuse from Juniper Networks, where he served as chief operating officer and executive vice-president and oversaw a broad range of business operations including the sales, marketing, engineering, manufacturing and customer service organisations.

Prior to Juniper Networks, he held various executive positions at Nortel Networks, including president of the Enterprise Division, a multibillion-dollar voice and data services business unit, and president of the Wireless Internet Division, a carrier-focused multibillion-dollar business unit delivering advanced wireless technologies to the marketplace. He was also responsible for Nortel`s Optivity line of network management software solutions.

"On behalf of the Micromuse board of directors and the executive team, I am extremely pleased to welcome Lloyd to Micromuse," said Luetkemeyer. "Lloyd`s deep knowledge of the networking industry, his extensive network of professional relationships, and his intuitive understanding of our customers` requirements and challenges are attributes that will allow him to make an immediate and beneficial impact."

Carney served as Bay Networks` executive vice-president and as general manager of its Enterprise Business Group prior to the company`s acquisition by Nortel Networks. Carney`s career also includes managerial and engineering roles at Data General, Prime Computer, Proteon and Radio Corporation of America (RCA). Over the course of his career, he has accumulated vast experience working in large and small companies, in both the US and overseas.

"I`m very impressed by Micromuse`s experienced executive team, solid financial performance, blue-chip customer base and strong product brand," said Carney. "As chairman of the board and chief executive officer of Micromuse, I intend to drive and nurture the key processes by which the company delivers value to its customers, shareholders and employees."

Micromuse will host a conference call and simultaneous Webcast today, Tuesday, 29 July 2003 at 12pm PT, 3pm ET to provide further details on this announcement. The live call will be available to the general public by dialling 888 276 0010 (domestic) or 612 332 7517 (international). A live Webcast of the conference call will be available at http://www.corporate-ir.net/ireye/ir_site.zhtml?ticker=MUSE&script=2100 or via a link from the Micromuse Web site at http://www.micromuse.com/. From the Web site home page, select the "Our Company" link and then select "Investor Relations" to access the live Webcast.

A replay of this conference call will be available by dialling 800 475 6701 (domestic) or 320-365-3844 (international) and entering access code 693839. The replay will be available from Tuesday, 29 July at 3.30pm PT until Tuesday, 5 August at 11.59pm PT. The replay will also be available as an archived audio file at http://www.micromuse.com/. From the Web site home page, select the "Our Company" link, the "Investor Relations" link, and the "Audio Archives" link to access the Web-based replay.