Vaisala Corporation complies with the insider guidelines issued by the Helsinki Exchanges.In accordance with the Securities Market Act, Vaisala Corporation’s permanent insiders include the members of the company’s Board of Directors, the company’s President and CEO, the members of the Corporate Management Group and the auditors, including the principally responsible auditor assigned to the company by a firm of authorized public accountants. In addition, the company’s extended list of permanent insiders includes persons who have regular access to insider information.

Vaisala Group’s financial administration supervises compliance with the insider guidelines, and regularly sends insiders an extract from the register of insider holdings to allow them to check and update the information. The Group’s financial administration also monitors insider trading to ensure trading restrictions are not violated.