Reported Earnings • Feb 18
Full year 2025 earnings released: EPS: UK£0 (vs UK£0 in FY 2024) Full year 2025 results: EPS: UK£0 (in line with FY 2024). Revenue: UK£200.6k (up 23% from FY 2024). Net loss: UK£583.9k (loss widened 6.0% from FY 2024). Over the last 3 years on average, earnings per share has increased by 64% per year but the company’s share price has fallen by 17% per year, which means it is significantly lagging earnings. Announcement • Feb 18
Tertiary Minerals plc, Annual General Meeting, Mar 19, 2026 Tertiary Minerals plc, Annual General Meeting, Mar 19, 2026. Announcement • Feb 06
Tertiary Minerals plc Announces Laboratory Results for the Four Holes Completed During the Phase 3 Drilling Programme At Target A1 At Its Mushima North Project in Zambia Tertiary Minerals plc announced laboratory results for the four holes completed during the Phase 3 drilling programme at Target A1 at its Mushima North Project in Zambia ("Mushima North" or the "Project") prior to the programme being curtailed by the early start to the wet season. Preliminary results from portable X-Ray Fluorescence ("pXRF") analysis of drill samples were notified on 13 November 2025. The laboratory analytical results indicate further high-grade silver and copper mineralisation in the north of Target A1, which has a mineralisation footprint of 450m by up to 400m wide area, and remains open to the northwest, south/southeast and at depth. Mushima North is located in the prospective Iron-Oxide-Copper-Gold region of Zambia. Target A1 is a polymetallic, silver-copper-zinc prospect located 28km to the east of the historic Kalengwa copper-silver mine which is currently under redevelopment and is one of several targets to be evaluated at the Project. Highlights: Drill intersections include (downhole widths, true widths unknown): o 97m at 56 g/t Ag, 0.43% Cu and 0.19% Zn (85 g/t Ag equivalent or 1.42% Cu equivalent) from 6m downhole (hole 25TMNRC-043). Including: SS 42m at 81 g/t Ag, 0.,70% Cu and 0.24% Zn from 55m downhole, and SS 27m at 98 g/t Ag, 0".91% Cu and 0.25% Zn from 70m downhole, and SS 13m at 77 g/t Ag, 1.46% Cu and 0.23% Zn (168 g/t Ag equivalent or 2.80% Cu equivalent) from 84m downhole. o 11m at 18 g/t Ag, 0.'18% Cu and 0.20% Zn (32 g/t Ag equivalent or 0.54% Cu equivalent) from 20m downhole (hole 25 TMNRC-044). o 17m at 14 g/t Ag, 0;25% Cu and 0.41% Zn (36 g/t Ag equivalent or0.60% Cu equivalent) from 51m downhole (hole 25™NRC-044). Best copper drill intersection to date: 13m at 1.46% Cu (2.8 0 % Cu equivalent) from 84m, with individual metre samples of up to 3.17% Cu (hole 25TMNRC -043). Silver mineralisation occurs over a 450m by 400m surface area and depth of mineralisation extended from 84m to 103m. O Mineralisation footprint remains open to the northwest, South/southeast and at depth extent remains to be fully tested. O JORC Exploration Target to be finalised in the coming weeks. Phase 3 Drill Programme A programme of approximately 1,000m Reverse Circulation ("RC") drilling was planned as part of the Phase 3 Drill Programme before heavy and earlier than expected rains cut this short. Four vertical holes were completed to a maximum depth of 127m testing the northern extent of the mineralisation footprint. The four drill holes now being reported, and described below, are located on two 100m spaced east-west drill lines, 8507275N and 8507375N. Drill line 8507375N represents the most northern drill traverse drilled to date. 25TMNRC-041: Located on a two drill-hole line with 25TMNRC-042. The drill hole was drilled vertically to a downhole depth of 112m. The hole was designed to test the continuation of the mineralisation to the north of drill line 8507275N. The Project lies 20km to the east of the Kalengwa copper mine in northwest Zambia, one of the highest-grade copper deposits ever to be mined in the country. In the 1970s, high-grade ore, average approximately 11% copper, was trucked for direct smelting at other mines in the Copperbelt. The Kalengwa mine is currently under redevelopment and is expected to produce 15,000 tonnes of copper annually. Numerous other geochemical and is expected to produce 15. Numerous other geochemical and/or geochemical and/or geophysical targets (A2,000 tonnes of copper annually; Numerous other geophysical targets (A2. Numerous other geophysical targets (NRC) are yet to be drill tested (A2, B1,000 tonnes of copper annually.; Numerous other geophysical targets (a2, B2, B2,000 tonnes of drill tested (A2,000 tonnes the east of the east of these are yet to be drill tested. Numerous other geophysical targets ("A2,000 tonnes of the historic Kalengwa mine is yet to be drill tested. numerous other geochemical and/or Geochemical and/or geophysical target A2, B. 
