The management of STMicroelectronics will conduct a conference call on April 27, 2005 at 9:00 a.m. U.S. Eastern Time / 3:00 p.m. CET, to discuss performance for the first quarter of 2005.

The conference call will be available via the Internet by accessing the following Web address: www.vcall.com. Those accessing the webcast should go to the Web site at least 15 minutes prior to the call, in order to register, download and install any necessary audio software. The webcast will be available until May 6, 2005.

Beginning with this quarterly release, the Company will report results reflecting the recent organizational changes outlined in earlier announcements. To facilitate comparison, the table below reflects previously reported 2004 quarterly sales results under this new organizational structure.

This, and all press releases issued by ST, including the 2004 earnings press release, are available immediately after their release on the Company’s website at www.st.com.

About STMicroelectronics
STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company’s shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2004, the Company’s net revenues were $8.76 billion and net earnings were $601 million. Further information on ST can be found at www.st.com.

* ST’s Product Groups are:
HPC (Home, Personal, and Communication Sector);
APG (Automotive Product Group);
CPG (Computer Peripherals Group);
MLD (Microcontrollers, Linear, and Discrete Group);
and MPG (Memory Products Group).