The biggest UK insider buys of the last twelve months

The largest open-market purchases directors made in their own companies, with how each has performed against the market since it was disclosed.

#	Company	Bought by	Date	Value	Alpha since
1	ASOS	William Barker	2026-04-23	£3.8m	+30.0%
2	Telecom Plus	Charles Wigoder	2026-06-23	£3.6m	+17.0%
3	Jardine Matheson Holdings Ltd (Singapore Reg)	1947 Trustee Limited (trustee for 1947 Trust benefiting Executive Directors)	2026-06-29	£3.3m	-3.2%
4	Trifast	Nicholas Mills	2026-07-02	£2.7m	-3.9%
5	Arbuthnot Banking Group	Sir Henry Angest	2026-03-26	£2.6m	-13.8%
6	Jardine Matheson Holdings Ltd (Singapore Reg)	Lincoln Pan	2026-05-26	£2.2m	-1.3%
7	Telecom Plus	Charles Wigoder	2026-07-10	£2.1m	-3.3%
8	Ocado Group	Jörn Rausing	2026-03-11	£1.8m	-10.8%
9	Jardine Matheson Holdings Ltd (Singapore Reg)	1947 Trustee Limited (trustee for 1947 Trust)	2026-05-28	£1.5m	-2.2%
10	Metlen Energy & Metals PLC	Evangelos Mytilineos	2026-04-10	£1.4m	+22.2%
11	Ninety One	Hendrik du Toit	2026-07-08	£1.3m	-7.0%
12	KRM22	Keith Todd	2026-05-21	£1.2m	+23.6%
13	3i Group	Simon Borrows	2026-05-21	£1.1m	+16.8%
14	River Global Plc	Christopher Mills	2026-04-27	£986k	+16.3%
15	Metlen Energy & Metals PLC	Evangelos Mytilineos	2026-04-20	£900k	+26.7%
16	Vistry Group	Greg Fitzgerald	2026-03-11	£893k	-35.0%
17	IG Design Group	Gerald Kuehr	2026-05-07	£860k	+18.8%
18	Greencore Group (CDI)	Leslie Van de Walle	2026-07-22	£833k	+0.3%
19	River Global Plc	Christopher Mills	2026-03-20	£831k	+8.4%
20	Shoe Zone	Anthony Smith	2026-05-19	£767k	+17.3%
21	Metlen Energy & Metals PLC	Evangelos Mytilineos	2026-04-22	£732k	+25.3%
22	Pantheon Resources	Michael Spencer	2026-06-04	£730k	-17.0%
23	Roadside Real Estate	Charles Dickson	2026-04-13	£702k	-7.9%
24	Supreme	Sandy Chadha	2026-07-20	£659k	-3.4%
25	Wheaton Precious Metals Corp.NPV (CDI)	Haytham Hodaly	2026-03-17	£633k	-19.8%

How this is put together

• Only open-market purchases count. Share allotments, vesting, option exercises and placings are disclosed the same way but aren't purchases at a market price, and they are frequently the largest disclosures — so including them would put a share award at the top of a page about buying.
• UK rows must be classified as open-market buys by comparing the filed price against that day's close. Rows we can't price yet are left out rather than assumed innocent. US rows come from a feed already restricted to Form 4 transaction code P, excluding derivatives and amendments.
• Each purchase is listed individually. Several insiders buying the same company on the same day appear as separate rows — that's several disclosures, not one large one. Where a purchase forms part of a cluster, it's marked.
• No more than three purchases from any single company appear on a board. One issuer filing the largest handful of the year would otherwise fill it and answer nothing; where entries are held back, the count is shown.
• Values are in the market's own currency and are never converted, so no exchange rate is involved.
• Performance is measured from the closing price on the day the purchase was disclosed — the first price a reader could have paid — not from the insider's own fill, and is marked against the most recent cached close rather than a live quote.
• Companies that have since delisted may stop being priced, so their entries can show no performance figure. Past performance is not a reliable indicator of future results.

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