Disclosure of Equity Participations Pursuant to the Swiss Stock Exchange Act

Bad Ragaz, Switzerland, November 24, 2015 – 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:

According to a notification signed on November 24, 2015 by Lombard Odier Asset Management (Switzerland) AG, Avenue des Morgines 2, 1213 Petit-Lancy (Contact: Nicolas Ristic, phone +41 22 709 33 48) this company holds indirectly due to a sale on November 23, 2015 with 69,735 registered shares less than 3% (i.e. 2.99%) of the voting rights in INFICON Holding AG.