October 8 2013 Disclosure of Equity Participations Pursuant to the Swiss Stock Exchange Act

Bad Ragaz, Switzerland, October 8, 2013 — INFICON Holding AG (SIX Swiss Exchange: IFCN), a leading manufacturer of vacuum instrumentation and process control software for the semiconductor and related industries and other industrial applications, announced today that according to a notification signed on October 4, 2013 from Ameriprise Financial Inc. 1099 Ameriprise Financial Center, Minneapolis, MN 55474, USA (Contact: Stacey Dryburgh, Holbrook House, Station Road, Swindon, SN1 1HH, UK; Tel +44 1793 363751), this company holds now since a purchase on October 1, 2013 with 69,975 registered shares a total of 3.121% of the voting rights in INFICON Holding AG.


Ameriprise Financial Inc. holds the voting rights indirectly over Threadneedle Asset Management Ltd, 60 St. Mary Axe, London EC3A 8JQ, UK.


Ameriprise Financial, Inc. controls the voting rights of Columbia Management Investment Advisers, which in turn controls Columbia Wanger Asset Management.

  Ameriprise Financial also controls the voting rights of Threadneedle Asset Management Holdings SàRL (Luxembourg), which in turn controls Threadneedle Management Luxembourg SA and Threadneedle Asset Management UK Ltd. Threadneedle Asset Management UK Limited controls TAM UK Holdings Ltd which in turn controls Threadneedle Asset Management Holdings Ltd. Threadneedle Asset Management Holdings Ltd. exercises control over Threadneedle International Limited, Threadneedle Pensions Ltd, Threadneedle Beta Ltd and Threadneedle Asset Management Ltd.

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