Ascom Holding AG - Disclosure of shareholding

Members of the Group:

1. The Trident European Fund, George Town, Cayman Islands.

2. Cycladic Capital Mgt. Ltd, 7 Clifford Street, London, UK.

3. Modulus Europe Ltd, George Town, Cayman Islands.

Proportion of voting rights:

9,08%

Type and number of the shares hold in common:

3'269'011 nominal shares

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 (revenue collection systems for public transport, parking and toll) 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 implementa-tion, right through to maintenance and support. The company has subsidiaries in 20 countries and a workforce of circa 3,600 employees worldwide. Ascom registered shares (symbol ASCN) are listed on the SWX Swiss Exchange in Zurich