Erik Cleage Leaves Altera

San Jose, Calif., February 11, 2005—Altera Corporation (NASDAQ: ALTR) today announced that Erik Cleage, the company’s senior vice president of marketing, is leaving the company after 19 years of service in various sales and marketing roles.

“I would like to thank Erik for his contributions and wish him success in his future endeavors,” said John Daane, Altera’s president and CEO.

“My experiences at Altera over the past two decades have been exciting, rewarding and fun,” said Cleage. “I am proud of what we were able to accomplish in establishing Altera as a premier technology company.”

Altera Corporation (NASDAQ: ALTR) is the world’s pioneer in system-on-a-programmable-chip (SOPC) solutions. Combining programmable logic technology with software tools, intellectual property, and technical services, Altera provides high-value programmable solutions to approximately 14,000 customers worldwide. More information is available at www.altera.com.

###

Altera, The Programmable Solutions Company, the stylized Altera logo, specific device designations and all other words that are identified as trademarks and/or service marks are, unless noted otherwise, the trademarks and service marks of Altera Corporation in the U.S. and other countries. All other product or service names are the property of their respective holder.