Disclosure of shareholding

In accordance with the regulations laid down in the law governing the stock exchange (Art. 20), Ascom Holding Ltd received the below-mentioned notifiable information:

Group members:

1.Hyos Invest Holding AG, Weinplatz 10, 8001 Zürich

2.Tower Equity Invest N.V., De Ruyterkade 62, Curacao, Netherlands Antilles

3.AB ENO RIVER Holding AG, c/o Juris Treuhand AG, Alpenstrasse 2, 6304 Zug

All societies are to 100% in the property of the inheriting community Dr. Ernst Müller-Möhl, Zurich.

Proportion of voting rights: 9,98%

Type and number of the shares hold in common: 3'591’874 nominal shares.

Ascom Holding Ltd

About Ascom
Ascom is an international solution provider with comprehensive technological know-how. In future the company aims to concentrate on the core areas of Wireless Solutions (high-value on-site communications solutions) and Security Solutions (applications for security, communication, automation and control systems for infrastructure operators, public security institutions and the army). The other areas mainly comprise Transport Revenue (fare collection, parking and toll collection systems) and Network Integration (network solutions for the data/voice convergence market). 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. The company has subsidiaries in 22 countries and a workforce of some 3,800 employees world-wide. Ascom registered shares (ASCN) are listed on the SWX Swiss Exchange in Zurich.