May 15, 2014 / 15:30 CET/CEST

Ad hoc announcement pursuant to Art. 53 LR

Disclosure of Equity Participations Pursuant to the Swiss Stock Exchange Act // ,Offenlegungen von Beteiligungen gemäss Börsengesetz

Bad Ragaz, Schweiz, 15. Mai 2014 – INFICON Holding AG (SIX Swiss Exchange IFCN), ein führender Hersteller von Vakuuminstrumenten und Prozesskontrollsoftware für die Halb-leiterindustrie und verwandte Branchen sowie für weitere Industrieanwendungen, gibt bekannt, dass gemäss einer am 14. Mai 2014 erhaltenen Mitteilung der BlackRock Inc., 55 East 52ndStreet, New York NY 10055, USA (Kontakt: Duncan Murray, BlackRock Investment Management (UK) Limited, Throgmorton Avenue, London EC2N 2DL, UK, Tel +44 20 7743 3334), diese Gesellschaft seit einem Kauf am 12. Mai 2014 mit 117‘317 Namenaktien nun insgesamt 5.09% der Stimmrechte in INFICON Holding AG hält.

Die Stimmrechte werden indirekt über BlackRock Delaware Holdings Inc., 400 Howard Street, San Francisco, CA 94105, U.S.A.; BlackRock Financial Management, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BlackRock Group Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock Advisors Holdings, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BlackRock Holdco 2, Inc., 1209 Orange Street, Wilmington, DE 19801, U.S.A.; BlackRock Holdco 4, LLC, 1209 Orange Street, Wilmington, DE 19801, U.S.A.; BlackRock Holdco 6, LLC, 1209 Orange Street, Wilmington, DE 19801, U.S.A.; BlackRock, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BlackRock International Holdings, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BR Jersey International Holdings L.P., One Waverley Place, 4th Floor, St. Helier, JE1 OBR, Jersey; BlackRock Luxembourg Holdco S.à r.I., 6D, Route de Trèves, Senningerberg, L-2633, Luxembourg sowie direkt über BlackRock Advisors (UK) Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock Fund Advisors, 400 Howard Street, San Francisco, CA 94105, U.S.A.; BlackRock Institutional Trust Company, National Association, 400 Howard Street, San Francisco, CA 94105, U.S.A.; BlackRock International Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock Investment Management (UK) Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock (Luxembourg) S.A., 6D, Route de Trèves, Senningerberg, L-2633, Luxembourg gehalten.

Bad Ragaz, Switzerland, May 15, 2014 — 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 received on May 14, 2014 from BlackRock Inc., 55 East 52nd Street, New York NY 10022, USA, (Contact: Duncan Murray, BlackRock Investment Management (UK) Limited, Throgmorton Avenue, London EC2N 2DL, UK, Tel +44 20 7743 3334) this company holds after a purchase of shares on May 12, 2014 with 117,317 registered shares a total of 5.09% of the voting rights in INFICON Holding AG.

The voting rights are held indirectly via BlackRock Delaware Holdings Inc., 400 Howard Street, San Francisco, CA 94105, U.S.A.; BlackRock Financial Management, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BlackRock Group Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock Advisors Holdings, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BlackRock Holdco 2, Inc., 1209 Orange Street, Wilmington, DE 19801, U.S.A.; BlackRock Holdco 4, LLC, 1209 Orange Street, Wilmington, DE 19801, U.S.A.; BlackRock Holdco 6, LLC, 1209 Orange Street, Wilmington, DE 19801, U.S.A.; BlackRock, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BlackRock International Holdings, Inc., 55 East 52nd Street, New York, NY 10055, U.S.A.; BR Jersey International Holdings L.P., One Waverley Place, 4th Floor, St. Helier, JE1 OBR, Jersey; BlackRock Luxembourg Holdco S.à r.I., 6D, Route de Trèves, Senningerberg, L-2633, Luxembourg, as well as directly via BlackRock Advisors (UK) Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock Fund Advisors, 400 Howard Street, San Francisco, CA 94105, U.S.A.; BlackRock Institutional Trust Company, National Association, 400 Howard Street, San Francisco, CA 94105, U.S.A.; BlackRock International Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock Investment Management (UK) Limited, 12 Throgmorton Avenue, London, EC2N 2DL, U.K.; BlackRock (Luxembourg) S.A., 6D, Route de Trèves, Senningerberg, L-2633, Luxembourg.

 

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