Shares in Spectra Systems Corporation (AIM:SPSY, OTC:SCTQ) rose 8% to 136p after the AIM-listed banknote authentication and security technology company reported a doubling of adjusted earnings per share following the first deliveries under a major sensor contract. Revenue rose 30.7% to $64.3 million for the year ended 31 December 2025, while adjusted EBITDA (earnings before interest, tax, depreciation and amortisation, adjusted for non-cash items) surged 82.9% to $27.3 million and adjusted profit before tax and amortisation more than doubled to $25.2 million.
Directa Plus PLC (AIM:DCTA, OTC:DTPKF) shares fell 17.5% to 7.01p after the graphene products company warned it could be placed into administration if it fails to secure fresh funding within weeks. The AIM-listed group said it was in advanced discussions with an unnamed institutional investor for a funding facility of up to £2.5 million to extend its cash runway, but cautioned there was "no certainty any funding transaction will be concluded".
Shares in Greatland Resources Ltd (AIM:GGP, OTC:GRLGF, FRA:G8G, ASX:GGP) rose 7% to 545.45p after the AIM-listed gold and copper miner reported a 150% expansion in the mineral resource at its flagship Telfer operation in Western Australia, taking the total to 8 million ounces of gold. The updated December 2025 estimate adds 4.8 million ounces at a discovery cost of approximately $5 per ounce, with the higher-confidence measured and indicated category growing 163% to 3.8 million ounces, providing a stronger foundation for mine planning and conversion into mineable reserves.
Shares in Mirriad Advertising PLC (AIM:MIRI, FRA:8WQ, OTCQX:MMDDF) fell 47% to 0.0029p after the AIM-listed virtual product placement company warned it will need to raise further funds before publishing its annual results, with cash standing at approximately £675,000 as of 27 March 2026. Virtual product placement is a technology that digitally inserts branded products into video content after filming, allowing advertisers to reach audiences without traditional ad breaks.
88 Energy Ltd (AIM:88E, ASX:88E, OTCQB:EEENF, FRA:POQ), the AIM and ASX-listed oil and gas explorer, has commenced permitting and planning for the Augusta-1 exploration well on Alaska's North Slope, targeting prospective resources of 64 million barrels of oil equivalent on a best-estimate, gross unrisked basis. The well is designed to test the stacked Ivishak and Kuparuk reservoirs within the North-West Lease Area of the company's South Prudhoe project, a 52,269-acre position situated immediately south of the prolific Prudhoe Bay and Kuparuk River producing units, in which 88 Energy holds a 100% working interest.
Hargreaves Services Plc (AIM:HSP, OTC:HGRVF) the AIM-listed environmental services group, saw its shares jump 8% after it launched a tender offer to return up to £20 million to shareholders at 850 pence per share, a premium of 16% to Thursday's closing price of 730 pence. The offer has been increased from the £15 million figure flagged in the company's interim results in January, when the 850 pence price also represents a premium of 26.9% to the 670 pence closing price on the day before that announcement.
Seeing Machines Ltd (AIM:SEE, OTC:SEEMF, FRA:M2Z), the AIM-listed AI-powered operator monitoring systems company, expects adjusted EBITDA to turn positive in both the third quarter and second half of its current financial year as approaching European road safety regulation drives a significant increase in automotive royalty volumes. The company said royalties from automotive production volumes are projected to rise significantly in the coming quarters as the General Safety Regulation (GSR), which mandates driver monitoring technology in new European vehicles, moves into active implementation and OEMs transition their compliance strategies into production.
88 Energy Ltd (AIM:88E, ASX:88E, OTCQB:EEENF, FRA:POQ) aims to raise up to the equivalent of £2.62 million (A$5.03 million) to help fund drill plans in Alaska. The AIM and ASX-listed explorer pricing the issue at A$0.029 a share, or about 1.508p.
80 Mile PLC (AIM:80M, OTCQB:BLLYF) shares jumped on Wednesday as it revealed it is moving its shares from the London Stock Exchange's SETSqx platform to SETS from today, a step the company said should widen investor access and improve liquidity. The AIM-listed explorer and developer said the move to SETS, the exchange's electronic order book for equities, is intended to broaden its shareholder base and make the stock more accessible to investors, including those trading internationally, through traditional order-book dealing.
The Malawi-based miner's flagship deposit remains the world's largest natural rutile reserve Sovereign Metals Ltd (ASX:SVM, OTCQX:SVMLF, AIM:SVML, FRA:SVM), the AIM-listed critical minerals company, has significantly upgraded the resource estimate for its Kasiya project in Malawi, sending shares up 9% to 44p. The updated mineral resource estimate (MRE) shows measured and indicated contained rutile rising 32% to 16.1 million tonnes, covering 1.65 billion tonnes of ore graded at 0.98% rutile.
Tower Resources PLC (AIM:TRP, FRA:ULF1) has raised £1.5 million of new funding to repay a bridge loan as it approaches long-awaited farm-out approvals in Cameroon and Namibia, which could clear the way for the group's next operational steps in both markets. The AIM-listed Africa-focused oil and gas company said Cameroon's state oil company SNH has told it it will recommend both a one-year extension of the Thali licence to March 2027 and approval for Prime Global Energies to acquire a 42.5% stake in the licence, though Tower is still waiting for written confirmation.
HeLIX Exploration PLC (AIM:HEX, OTCQB:HHEXF) has secured its first helium transport trailer, a practical step toward commercial production at its Rudyard project in Montana as disruption in Qatar squeezes global supply. The AIM-listed group told investors it has signed a lease for a ten-cylinder jumbo tube trailer with capacity to carry 156,300 standard cubic feet of compressed helium at a working pressure of 2,669 PSI.