Atlas Copco’s Q1 Report Conference Call on April 27

Stockholm, April 18, 2006: Atlas Copco will publish its Q1 results on Thursday, April 27 at approximately 12:00 PM CET. A conference call will be held at 3:00 PM CET / 9:00 AM EST.

Participating from Atlas Copco will be Gunnar Brock, President and CEO, and Hans Ola Meyer, CFO. The conference call will begin with a short presentation of the report followed by a question and answer session. The conference call will be broadcasted live via the Internet. Please see our website for link, handout and further details: www.atlascopco.com/ir To help ensure that the conference call begins in a timely manner, please dial in 5-10 minutes prior to the scheduled start time. Dial-in number: +44 (0)20 7984 7564 Replay-number: +44 (0)20 7806 1970 Code: 5114024# The replay is available for two days. We look forward to your participation. Mattias Olsson Investor Relations Manager