Risto Siilasmaa

Filings by Risto Siilasmaa span 2 companies, the busiest being WithSecure Oyj and F-Secure Oyj. Between 5 May 2017 and 20 October 2025, the trades on record add up to 10 filings.

The filings describe grants, exercises and other transfers rather than trades on the open market. Compensation-driven entries like these are tracked, but they say little about how insiders judge the share price.

On 20 October 2025 came the latest disclosure, a transaction for €102.2M in WithSecure Oyj. Filings reach the Nasdaq Helsinki feed a median of 2 days after the trade. The regulation allows three business days to notify a trade (MAR article 19). Every figure here comes from the filings published by Nasdaq Helsinki and describes the past, not future prices; it is not investment advice.