Christian Mayer

Christian Mayer appears in our data through filings on Colliers International Group Inc. shares, published by SEC (Form 4). In total, 40 filings cover trades dated from 27 February 2017 to 11 December 2025.

In open-market terms, that means 5 purchases on one side and 23 sales worth €16.2M on the other. The totals do not cover 5 filings with an undisclosed amount. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Other entries cover 11 option exercises. So far in 2025, the count stands at no purchases and 2 sales.

The record was last updated on 12 December 2025 with an open-market sale (€2.5M) in Colliers International Group Inc. The latest purchase dates back some time: it was published 1,660 days ago, on 8 April 2022. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 1 day. US insiders must file a Form 4 within two business days of a trade. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.