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ON Semiconductor
has acquired Catalyst Semiconductor, Inc.

As a result of the acquisition of Catalyst Semiconductor by ON Semiconductor, www.catsemi.com has been integrated into www.onsemi.com.

All information and services formerly hosted on www.
catsemi.com is now available on www.onsemi.com.

The integration of acquired Catalyst Semiconductor business operations and processes into ON Semiconductor’s systems became effective on August 31, 2009.

ON Semiconductor is now a technologically broader and operationally stronger company and we remain committed to providing outstanding customer service, advanced technology solutions, industry-leading supply chain management, and world-class quality and manufacturing. As we transition two successful companies into a single streamlined operation, we expect to deliver added value to our customers and our shareholders.