Brian Richard Ostroff

All filings by Brian Richard Ostroff on record concern Arianne Phosphate Inc. We count 27 filings; the first trade dates from 3 June 2014 and the latest from 10 December 2025.

Every open-market trade on record is a purchase: 17 purchases worth €38k, and no sale. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant.

A typical purchase (the median) is worth €1,119. Across 17 purchases, this insider has always bought alone, with no colleague buying within 30 days.

The latest filing, published on 11 December 2025, reports a transaction of €1,569 in Arianne Phosphate Inc. The latest purchase dates back some time: it was published 1,957 days ago, on 15 June 2021. The median gap between a trade and its publication by SEDI is 3 days. That lag is the time during which only the insider knows about the trade. Source: insider filings from SEDI. Past trades are no guide to future returns.