Disclosure of shareholding

In accordance with Art. 20 of the Federal Act on Stock Exchanges and Security Trading, Ascom Holding AG received the following notification:

I. Shareholder:

• Deutsche Bank AG, Frankfurt, Theodor-Heuss-Allee 70, D-60486 Frankfurt/M.
• Contact person: Dirk Hadlich
• Facts and circumstances triggering the obligation to notify: Falling below thresh-old
• Date of the sale which resulted in holding falling below the threshold: March 20, 2008

II. Disclosure of position:

• Total shareholding: below 3%

Ascom Holding AG

About Ascom
Ascom is an international solution provider with comprehensive technological know-how in Mission-Critical Communication. The company concentrates on the core areas of Wireless Solutions (high-value, customer-specific on-site communications solutions) and Security Solutions (applications for security, communication and control systems for infrastructure operators, public security institutions and the army). With a wealth of experience in implementing complex projects for discerning customers, Ascom has established itself in important key markets. Offerings range from analysis and consulting to system design and system integration, project management, engineering and implementation, right through to maintenance and support. Ascom registered shares (ASCN) are listed on the SWX Swiss Exchange in Zurich.

This document does not constitute an offer or solicitation to subscribe for, purchase or sell any securities. This document is not being issued in the United States of America or the United Kingdom and should not be distributed in any jurisdiction in a manner where such distribution would not comply with regulatory requirements. In particular, this document may not be distributed into the United States, to United States persons or to publications with a general circulation in the United States. In addition, the securities of Ascom have not been and will not be registered in any jurisdiction outside Switzerland. The securities of Ascom may not be offered, sold or delivered and no solicitation to purchase such securities may be made within the United States or to U.S. persons absent an applicable exemption from the registration requirements of the United States securities laws or within any other jurisdiction and in a manner where such offer, sale, delivery or solicitation might not be in compliance with regulatory requirements (including the United Kingdom).