National Grid plc Stock: price and insider trades · United Kingdom

Headquartered in London, United Kingdom, National Grid plc is a listed company and traces its origins to 1990. Filings by its managers are published through RNS (LSE). In the past year (18 October 2025 to 18 October 2026), 39 filings came from 13 insiders.

The record shows 9 purchases on the open market worth €838k, made by 7 insiders, against 4 sales worth €7.8M by 4 insiders. The totals do not cover 3 filings with an undisclosed amount. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. On the buying side, the filings list 5 board members, 1 finance chief and 1 chief executive among the declarants. Biggest ticket of the year: €4.6M, sold by Andy Agg and made public on 3 July 2026 (0.0070% of market cap).

For context, the typical company on the same exchange (median of 834 companies) published 6 filings over the same period, against 39 filings here. Our records for National Grid plc go back to 2023, with 54 purchases and 23 sales on the open market in total.

In all, 8 purchases were made within 30 days of a purchase by another insider of the company. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. The last insider purchase was made public on 1 September 2026, 46 days ago. The median gap between trade and publication is zero days: most filings appear on the same day. For comparison, UK MAR gives managers three business days to notify a trade.

This summary is built from RNS (LSE) disclosures alone and does not predict where the share price will go.