Duncan Tatton-Brown

Duncan Tatton-Brown appears in our data through filings on Oxford Nanopore Technologies plc shares, published by RNS (LSE). In total, 3 filings cover trades dated from 13 September 2022 to 2 March 2026.

Purchases make up the whole of the open-market record (3 purchases, €1.1M). A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. In 2026 alone, the filings show 1 purchase and no sales.

Half of the purchases are above €348k and half below. 2 out of 3 purchases came within 30 days of a purchase by at least one other insider of the same company. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. For 3 purchases whose 90-day window has closed, the share price was higher on day 90 than the day after publication in 33% of cases, with a median move of -15.4%. These figures describe past trades and do not predict future prices.

On 3 March 2026 came the latest disclosure, an open-market purchase for €115k in Oxford Nanopore Technologies plc. Between a trade and the moment it shows up on RNS (LSE), the median delay is 1 day. For comparison, UK MAR gives managers three business days to notify a trade. Source: insider filings from RNS (LSE). Past trades are no guide to future returns.