05.02.2007 – 07:31

Micronas Semiconductor Holding AG

euro adhoc: Micronas Semiconductor Holding AG
Buybacks
End of share buy-back program as at February 2, 2007

  Disclosure announcement transmitted by euro adhoc. The issuer is responsible
  for the content of this announcement.

05.02.2007

With effect from February 2, 2007, Micronas Semiconductor Holding AG
ended the share buy-back program that was initiated on February 13,
2006. As part of this program, Micronas Semiconductor Holding AG
repurchased a total of 2 973 500 registered shares via a separate
trading line on the SWX Swiss Exchange. This is equivalent to 9.11
percent of the share capital of Micronas Semiconductor Holding AG
registered in the Commercial Register.  The acquired shares were
bought back and the withholding tax was deducted. The Board of
Directors of Micronas Semiconductor Holding AG has decided to propose
to the ordinary Shareholders’ Meeting on March 2, 2007, that these
registered shares should be cancelled, with a corresponding reduction
in the registered share capital. The Micronas Group is a leading
independent supplier of innovative, application-specific
semiconductor solutions for consumer and automotive electronics. Its
shares are listed on the SWX Swiss Exchange in Zurich.

end of announcement                               euro adhoc 05.02.2007 07:00:00

Further inquiry note:

Susy Krucker
Investor Relations
Phone: +41 44 445 39 60
E-mail: investor@micronas.com

Branche: Technology
ISIN: CH0012337421
WKN: 910354
Index: SPI, SMCI, SPIEX, SMIM, SMIEXP
Börsen: SWX Swiss Exchange / official market