UK small-cap RNS · 16 Apr 2026

Every announcement of UK small & mid caps under £2bn. The ones that started or moved a situation are marked – a click opens it.

Date	Company	Mcap	Holder	Stake	Crossed
16 Apr	Blue Star Capital BLU	£1.8m	Nicholas Slater	6.51% → 5.39%
16 Apr	Light Science Technologies Holdings LST	£8.6m	Guinness Asset Management	4.89% → 1.97%	3%
16 Apr	RC Fornax PLC RCFX	£4.5m	UBS Group AG - Investment Bank & Global Wealth Management	0% → 5.14%	5%
16 Apr	PureTech Health PRTC	£268m	Citigroup Inc.	6.1% → 6.07%
16 Apr	Premier African Minerals Ltd PREM	£2.2m	Richard Deacon	7.7% → 8.55%
16 Apr	WH Smith SMWH	£631m	Causeway Capital Management LLC	21.09% → 22%
16 Apr	Gulf Marine Services GMS	£212m	Bank of America Corporation	7.19% → 7.17%
16 Apr	Somero Enterprises Inc. SOM	£152m	James T. Vanasek	10.13% → 11.25%
16 Apr	Renalytix RENX	£40m	UBS Group AG - Investment Bank & Global Wealth Management	0% → 7%	5%
16 Apr	Permanent TSB Group Holdings (CDI) PTSB	£1,370m	Goldman Sachs International	7.12% → 7%
16 Apr	Plexus Holdings POS	£5.2m	First Equity Limited	5% → 3.67%	5%
16 Apr	Provexis PXS	£22m	DSM Venturing BV	10.94% → 9.96%	10%
16 Apr	WH Smith SMWH	£631m	JPMorgan Chase & Co.	5.22% → 5.18%
16 Apr	Ashtead Technology Holdings AT.	£489m	Artoney Equity Trading Unlimited	0% → 3.87%	3%
16 Apr	Iofina IOF	£90m	Richard Sneller	22.1% → 23.1%
16 Apr	AdvancedAdvT Limited ADVT	£233m	Artemis Investment Management LLP	4.83% → 5.01%	5%
16 Apr	Eden Research EDEN	£20m	Unicorn Asset Management Limited	5.19% → 7.54%
16 Apr	OSB Group OSB	£1,615m	JPMorgan Asset Management Holdings Inc.	5.19% → 5.22%
16 Apr	DotDigital Group DOTD	£168m	Liontrust Investment Partners LLP	11.6% → 10.11%
16 Apr	DotDigital Group DOTD	£168m	Octopus Investments Limited	15.17% → 16.34%
16 Apr	ActiveOps AOM	£72m	Octopus Investments Limited	9.06% → 10.1%	10%
16 Apr	Domino's Pizza Group DOM	£827m	BlackRock, Inc.	6.59% → 6.61%
16 Apr	Faron Pharmaceuticals Oy FARN	£66m	Timo Syrjälä	12.69% → 7.77%	10%
16 Apr	Frontier IP Group FIPP	£13m	First Equity Limited	3.21% → 2.74%	3%
16 Apr	Morgan Sindall Group MGNS	£1,839m	Aberdeen Group plc	0% → 5.03%	5%
16 Apr	Amigo Holdings AMGO	£33m	Spreadex LTD	6.03% → 5.48%
16 Apr	Mortgage Advice Bureau (Holdings) MAB1	£220m	Artoney Equity Trading Unlimited	0% → 3.58%	3%
16 Apr	Costain Group COST	£651m	UBS Group AG-Investment Bank & Global Wealth Management	0% → 9.35%	5%
16 Apr	PureTech Health PRTC	£268m	Citigroup Inc.	6.07% → 6%
16 Apr	Atalaya Mining ATYM	£1,229m	The London & Amsterdam Trust Company Limited	3.2%	3%
16 Apr	Arc Minerals Limited ARCM	£14m	Mohamed Zafar Quraishi	3%	3%
16 Apr	Kier Group KIE	£1,303m	UBS Group AG-Investment Bank & Global Wealth Management	0% → 8.27%	5%
16 Apr	Renalytix RENX	£40m	UBS Group AG - Investment Bank & Global Wealth Management	7% → 0%	5%
16 Apr	Pennpetro Energy PPP	£11m	Jesse Edwin White	5.34%	5%

Notifications of major holdings (TR-1): a holder crossing 3%, 5%, 10% … of the voting rights. Transfers inside a group are left out.