Johanna Lamminen

Johanna Lamminen (board member) discloses dealings in 2 companies, chiefly Mandatum Oyj and Sampo. Between 3 November 2022 and 12 November 2025, the trades on record add up to 6 filings.

The open-market record is one-sided, with 4 purchases worth €72k and not one sale. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. So far in 2025, the count stands at 1 purchase and no sales.

A typical purchase (the median) is worth €18k. Measured against the company's value, the median purchase equals 0.0006% of market capitalisation, across 4 purchases where it is known. Of 4 purchases, 4 formed part of a group of insiders buying within 30 days of each other. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. Ninety days after publication, 3 purchases show a median change of +3.6%, with the price up in 67% of them. They describe history only and say nothing certain about the share price ahead.

On 14 November 2025 came the latest disclosure, an open-market purchase for €25k in Mandatum Oyj. Typically, a trade is published a median of 2 days after it takes place. Under the Market Abuse Regulation, managers have three business days to notify their trades. These figures are compiled from regulatory filings published by Nasdaq Helsinki. They describe what insiders did and are not a recommendation.