Disclosure of Equity Participations Pursuant to the Swiss Stock Exchange Act
Bad Ragaz, Switzerland, May 18, 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 that according to a notification signed on May 15, 2015 by BlackRock Inc., 55 East 52nd Street, New York NY 10055, USA, (Contact: Tim Dudley, BlackRock Investment Management (UK) Limited, Throgmorton Avenue, London EC2N 2DL, UK, Tel +44 20 7743 1540) this company holds after an purchase of shares on May 13, 2015, directly and indirectly with 116,993 registered shares and 8 CFDs a total of 5.08% of the voting rights in INFICON Holding AG.