Rio Tinto plc

All filings by Rio Tinto plc on record concern Mason Resources Corp. We count 4 filings; the first trade dates from 12 May 2017 and the latest from 14 August 2017.

Not one of the filings records a straightforward purchase or sale on the market. Grants and option exercises follow pay plans set in advance, so they reveal less about an insider's own view than a purchase made with personal money.

The latest filing, published on 14 August 2017, reports a transaction of €828k in Mason Resources Corp. Filings reach the SEDI feed a median of 2 days after the trade. This delay matters because a trade only becomes useful information once it is public. Source: insider filings from SEDI. Past trades are no guide to future returns.