EX-99.1 2 ex1d16quarter2results202.htm EX-99.1
Rio Tinto releases second quarter 2025 production results 16 July 2025 13% CuEq production uplift for Q2 YoY, and 6% for H1, as we execute our strategy Rio Tinto Chief Executive Jakob Stausholm said: “We delivered excellent operational performance from our mine operations with record production from our bauxite business and from Oyu Tolgoi as it ramps up to become the world’s fourth largest copper mine before the end of the decade. “We continue to make strong progress in our production and growth projects, achieving our highest Pilbara Q2 production since 2018 and accelerating the first shipment from the Simandou high-grade iron ore project in Guinea. “We will continue to drive progress towards our long-term strategy to deliver profitable growth and build a stronger, more diversified business.” 1. Executive Summary • We’re pleased to have announced Simon Trott as Chief Executive with effect from 25 August 2025. • Copper equivalent (CuEq) production rose 13% in Q2 YoY, and 6% YoY for the half year, driven by strong performance in our copper business and the contribution of the Arcadium acquisition. • Copper production is now expected at the higher end, and copper unit costs around the lower end, of full year guidance ranges. • Pilbara iron ore achieved its highest Q2 production since 2018, recovering well from Q1 extreme weather impacts. • Bauxite achieved a second consecutive quarterly production record and is now expected at the higher end of the full year production guidance range. • Lithium integration progressing to plan, in line with our strategy to establish a world-class lithium business. • Simandou first shipment accelerated to around November 2025, with 0.5 to 1.0 Mt of shipments expected in 2025 (SimFer scope from Blocks 3 & 4). • Continued progress with our Iron Ore replacement strategy: Western Range opened on time and on budget, while Hope Downs 2 received all Government approvals in Q2. Production1 Q2 2025 vs Q2 2024 vs Q1 2025 2025 guidance5 Guidance status Pilbara iron ore shipments (100% basis) Mt 79.9 -1 % +13 % 323 to 3386 Unchanged Pilbara iron ore production (100% basis) Mt 83.7 +5 % +20 % NA Unchanged Bauxite Mt 15.6 +6 % +5 % 57 to 59 Unchanged7 (at higher end) Alumina Mt 1.8 +8 % -6 % 7.4 to 7.8 Unchanged Aluminium2 Mt 0.84 +2 % +2 % 3.25 to 3.45 Unchanged Copper (consolidated basis)3 kt 229 +15 % +9 % 780 to 850 Unchanged7 (at higher end) Titanium dioxide slag Mt 0.3 +13 % +21 % 1.0 to 1.2 Unchanged8 (at lower end) IOC4 iron ore pellets and concentrate Mt 2.5 +14 % +7 % 9.7 to 11.4 Unchanged Boric oxide equivalent Mt 0.1 +6 % +13 % ~0.5 Unchanged 1 Rio Tinto share unless otherwise stated. 2 Includes primary aluminium only. 3 From Q1 2025, we report copper production and guidance as one metric, in order to simplify reporting and align with peer practices. For further details see slide 90 of our Investor Seminar 2024 presentation. 4 Iron Ore Company of Canada. 5 See further notes in Section 2, 2025 guidance. 6 As stated at Q1 2025 - at the lower end of guidance. 7 At the higher end of guidance. 8 At the lower end of guidance. Notice to ASX/LSE Rio Tinto | Second quarter operations review 1 EXHIBIT 99.1

2. 2025 guidance Production guidance • 2025 production guidance is unchanged1. Pilbara iron ore shipments • We continue to expect Pilbara shipments to be at the lower end of guidance, due to four cyclones as announced in Q1. • Pilbara iron ore guidance remains subject to the timing of approvals for planned mining areas and heritage clearances. The system has limited ability to mitigate further losses from weather if incurred. Bauxite production • Bauxite production is expected to be at the higher end of guidance range. Copper production • Copper production is expected to be at the higher end of guidance due to our continued successful ramp up of Oyu Tolgoi underground mine and good performance at Escondida. Titanium dioxide slag production • TiO2 production is expected to be at the lower end of guidance reflecting market demand. 1 Guidance remains subject to weather impacts. Unit cost guidance • 2025 unit cost guidance is unchanged. ◦ Pilbara iron ore: H1 benefited from a weaker than expected Australian dollar. ◦ Copper: we expect full year unit costs to be around the lower end of the guidance range due to good cost control, production volumes at the higher end of the full year guidance range and higher than expected gold prices driving net costs down. Unit costs 2025 guidance Pilbara iron ore unit cash costs, free on board (FOB) basis - US$ per wet metric tonne 23.0-24.50 Copper C1 net unit costs (includes Kennecott, Oyu Tolgoi and Escondida) - US cents per lb 130-1501 1 Expected around the lower end of guidance. 3. Group financial update Expenditure on exploration and evaluation • Pre-tax and pre-divestment expenditure on exploration and evaluation charged to the profit and loss account in 2025 was $334 million, compared with $487 million in 2024. Approximately 33% of the spend was by central exploration, 10% by Minerals (with the majority focusing on lithium), 36% by Copper, 19% by Iron Ore and 2% by Aluminium. Qualifying expenditure on the Rincon project has been capitalised since 1 July 2024, accounting for most of the decrease in expense. Net debt • As communicated in our First Quarter Operations Review, completion of the Arcadium acquisition on 6 March increased the group’s net debt by approximately $7.6 billion1. This comprises $6.3 billion paid to Arcadium’s shareholders, $0.4 billion paid to their convertible loan note holders, consolidation of Arcadium’s $0.7 billion net debt and $0.2 billion loaned by Rio Tinto to Arcadium prior to the acquisition completing. Working capital • In H1 2025, we saw a cash outflow of approximately $0.6 billion from an increase in working capital. This included optimisation of stock levels in the Pilbara and normal seasonal movements in amounts due to JV partners and employees. 1 Subject to finalisation of acquisition accounting review. Rio Tinto | Second quarter operations review 2

4. Our markets Global economy: improved from the end of the first quarter given US/China tariff de-escalation. However, geopolitical tensions and trade barriers remain near-term economic risks. Chinese economy: industrial activity and net exports grew strongly during the quarter on the back of China’s highly competitive manufacturing sector. Trade diversification continued as the decline in exports to the US was more than offset by shipments to other regions. Retail sales growth was supported by ongoing stimulus measures while the government remains committed to infrastructure investment. However, headwinds such as trade tensions and a soft property market continue to pose challenges. US economy: held up given resilient household consumption and private fixed investment. The impact of tariffs is still feeding through to inflation and sentiment. The housing market continues to be weak and building activities have been hampered by elevated mortgage rates and reduced labour supply. Iron ore • China’s crude steel production maintained a high annualised run-rate of more than one billion tonnes in Q2. However, global steel prices and mill margins remained under pressure. • China’s steel exports for the period April to May increased to ~120Mt annualised run-rates, compared to 111Mt in 2024. • Iron ore seaborne supply recovered strongly in Q2 from weather-related disruption earlier in the year. However, China's inventories at 47 major ports were drawn down by 5Mt during the quarter to 145Mt. Copper • The London Metal Exchange (LME) price fell amid economic uncertainty in early April but recovered in May, driven by US-China tariff de-escalation, a weakening dollar and strong underlying fundamentals. • The Chicago Mercantile Exchange (CME) cash price traded 10% above the LME price on average over the quarter, reflecting tariff risks. • Copper concentrate market tightness intensified in Q2, with spot treatment and refining charges slipping further into negative territory. While some smelters outside China have scaled back production, Chinese smelters have ramped up refined output, further exacerbating the supply strain. Aluminium • The LME quarterly average price fell during Q2 amid global trade tensions but improved towards the end of the quarter, with rising geopolitical risks in the Middle East and easing of trade tensions between the US and China. • Aluminium market premiums rose in the US in Q2 on a duty paid basis after implementation of Section 232 tariffs in April. The Q2 premium increased to largely cover the tariff cost. In Europe and Japan, aluminium market premiums fell on weak demand. • Australian FOB alumina price rose in Q2, up from the lows in Q1, on improved fundamentals. • Chinese bauxite spot import prices fell in Q2 on higher Guinean bauxite exports, despite continued risks to supply following the cancellation of several mining permits by the Guinean government in recent months. Lithium • Lithium demand remains strong driven by global EV sales which were up 29% YoY between April and May, and solid demand from stationary batteries. However, the market remains oversupplied due to producer resilience to falling prices while new projects ramp up. Titanium dioxide • Paint and pigment demand has not gained momentum, with downstream inventories continuing to build. Borates • The borates market diverged earlier in Q2 as tariffs disrupted US supply to China, while ex-China markets remained stable. Following tariff adjustments in May, demand from China has been strong. Rio Tinto | Second quarter operations review 3

Index prices Start of Q2 (01/04/25) End of Q2 (30/06/25) % change start - end Q2 Q1 2025 average Q2 2025 average % change QoQ Iron ore ($/dmt CFR China)1 104 94 (10) % 104 98 (6) % Copper (LME spot, c/lb) 438 455 4 % 424 432 2 % Aluminium (LME spot, $/t) 2,499 2,593 4 % 2,627 2,448 (7) % Lithium carbonate (spot, $/t CIF China, Japan & Korea)2 9,350 8,100 (13) % 9,809 8,566 (13) % 1 Monthly average Platts (CFR) index for 62% iron fines. This is reflective of the pricing basis before we introduced the new product strategy (see Iron Ore section for further details). 2 Fastmarkets index for Lithium carbonate min 99.5% Li2CO3 battery grade. Average realised prices achieved for our major commodities Units H1 2025 Q2 2025 Q1 2025 H1 2024 Pilbara iron ore FOB, $/wmt 82.5 80.5 84.8 97.3 Pilbara iron ore* FOB, $/dmt 89.7 87.5 92.2 105.8 Aluminium** Metal $/t 3,125 3,040 3,223 2,746 Copper*** US c/lb 436 441 430 419 IOC pellets FOB $/wmt 130 127 133 154 *Assuming 8% moisture. **LME plus all-in premiums (product and market). ***Average realised price for all units sold. Realised price does not include the impact of the provisional pricing adjustments, which positively impacted revenues in the first half by $266 million (first half 2024 positive impact of $93 million). Rio Tinto | Second quarter operations review 4

5. Iron Ore (Pilbara operations) Rio Tinto share of production (Million tonnes) Q2 2025 vs Q2 2024 vs Q1 2025 Pilbara Blend and SP10 Lump1 23.2 +11 % +20 % Pilbara Blend and SP10 Fines1 33.0 +5 % +18 % Robe Valley Lump 1.7 +9 % +9 % Robe Valley Fines 2.3 -14 % +14 % Yandicoogina Fines (HIY) 10.9 -3 % +18 % Total Pilbara production 71.1 +5 % +18 % Total Pilbara production (100% basis) 83.7 +5 % +20 % Rio Tinto share of shipments (Million tonnes) Q2 2025 vs Q2 2024 vs Q1 2025 Pilbara Blend Lump 11.2 -10 % +14 % Pilbara Blend Fines 21.5 -13 % +14 % Robe Valley Lump 1.4 +4 % +20 % Robe Valley Fines 2.6 -15 % +18 % Yandicoogina Fines (HIY) 10.6 -6 % +14 % SP10 Lump1 8.3 +64 % +3 % SP10 Fines1 12.5 +52 % +9 % Total Pilbara shipments2 68.1 +3 % +12 % Total Pilbara shipments (100% basis)2 79.9 -1 % +13 % Total Pilbara shipments (consolidated basis)2, 3 70.0 +2 % +12 % Production figures are sometimes more precise than the rounded numbers shown, hence small rounding differences may appear. 1 SP10 includes other lower grade products. 2 Shipments includes material shipped from the Pilbara to our portside trading facility in China which may not be sold onwards by the group in the same period. 3 While Rio Tinto has a 53% net beneficial interest in Robe River Iron Associates, it recognises 65% of the assets, liabilities, sales revenues and expenses in its accounts (as 30% is held through a 60% owned subsidiary and 35% is held through a 100% owned subsidiary). The consolidated basis sales reported here include Robe River Iron Associates on a 65% basis to enable comparison with revenue reported in the financial statements. • Q2 production: strong with mine operations recovering post Q1 weather impacts to achieve the highest Q2 production since 2018. ◦ Mine health remains a focus and has improved since the wet weather from Q4 2024 to Q1 2025. SP10 levels accounted for 29% of Pilbara shipments (on 100% basis) and, on a standalone basis, will reduce with product strategy changes (see below) from current levels. • Q2 shipments: port maintenance in Q1 was postponed to Q2 due to cyclone impacts, with some work remaining in Q3. As a result, Q2 shipments were 3.9 million tonnes below production in Q2. • Product strategy: as first announced in Q3 2024, we have been undertaking a review of our product strategy. We have notified customers of changes to specifications of the Pilbara Blend. The changes predominantly combine the previous Pilbara Blend and SP10 products into a single blend with the iron content moving to 60.8% Fe (average) from 61.6% Fe (average) (for the Pilbara Blend fines product). Shipments of the new Pilbara Blend commenced in July 2025. • Q2 sales: 9% of sales priced by reference to the prior quarter’s average index lagged by one month: ◦ remainder sold either on current quarter average, month average or on the spot market. ◦ 24% of sales were made on a free on board (FOB) basis, with remainder sold including freight. • Q2 portside sales in China: 7.8 million tonnes (7.5 million tonnes in Q2 2024): ◦ 96% of our portside sales were either screened or blended in Chinese ports. Our portside business enables us to access the onshore Chinese iron ore market, extending our Pilbara value chain by managing the increasing variability of our ore bodies. Rio Tinto | Second quarter operations review 5

◦ end-June: inventory levels at portside were 4.4 million tonnes, including 3.8 million tonnes of Pilbara product. • Achieved average pricing in the first half of 2025 was $82.5 per wet metric tonne ($97.3 in the first half of 2024) on an FOB basis (equivalent to $89.7 per dry metric tonne, with an 8% moisture assumption). This compares to the average first half price for the monthly average Platts index for 62% iron fines converted to a FOB basis of $92.0 per dry metric tonne. Rio Tinto | Second quarter operations review 6

6. Aluminium Rio Tinto share of production (‘000 tonnes) Q2 2025 vs Q2 2024 vs Q1 2025 Bauxite 15,644 +6 % +5 % Bauxite third party shipments 11,147 +4 % +14 % Alumina1 1,815 +8 % -6 % Aluminium 842 +2 % +2 % Recycled aluminium 74 +6 % +11 % 1 As stated in Q1 2025, following sanction measures by the Australian Government, Rio Tinto has taken on 100% of capacity of Queensland Alumina Limited (QAL) for as long as the sanctions continue. With the end of the QAL participation agreement at the end of December 2024, QAL and Rio Tinto have entered into a new two-year tolling agreement for 100% of the capacity, effectively making QAL a tolling entity exclusively for Rio Tinto. This additional output is excluded from the production tables in this report as QAL remains 80% owned by Rio Tinto and 20% owned by Rusal. All produced metal has been shipped with sales pricing, product mix and shipping destinations flexed to optimise our position in the wake of the changing tariff environment. Over H1 2025, we incurred around $300m of gross costs associated with US tariffs on our primary aluminium exports from Canada. A substantial part thereof has been compensated by the related increase in the US Midwest duty paid premium, which rapidly adapted to the 25% tariffs level in Q1, but, at the end of Q2, was not fully compensating for the 50% tariff. Bauxite • Q2: achieved record production for the quarter and for the half year, with full year production now expected at the higher end of the guidance range. ◦ Amrun continues to outperform its nameplate capacity, achieving improved utilisation as the Safe Production System (SPS) matures. ◦ Gove production increased due to better plant reliability and availability. Alumina • Q2: lower production due to operational challenges, in particular with equipment reliability at Yarwun. This necessitated rescheduling of shutdowns and maintenance in Q2 to ensure long-term reliability and efficiency, alongside managing yield and quality. Aluminium • Q2: operations are stable, adapting to external factors at our New Zealand Aluminium Smelter (NZAS) and Kitimat operations. ◦ NZAS: the call from Meridian Energy to reduce electricity usage by 50MW ended on 15 June 2025, earlier than originally planned (previously August 2025). Ramping up to full production by first week of August. ◦ Kitimat: our energy supply and production continues to be impacted by lower reservoir levels. Despite these challenges, production rose QoQ by optimising supply to the smelter and importing energy to mitigate the effects of the low water levels. Rio Tinto | Second quarter operations review 7

$/tonne H1 2025 H1 2024 H1 2025 vs H1 2024 Average realised prices including premiums for value- added products (VAP) 3,125 2,746 +14 % Average LME price 2,539 2,358 +8 % Average product premiums for VAP sales1 292 287 +2 % 1 Our VAP sales increased to 46% of primary metal sold in H1 2025 (H1 2024: 45%). H1 2025 Q2 2025 Total RTA shipments - US destination, kt 723 343 Total RTA tariff cost, $m 321 244 Average mid-west premium duty paid1, $/tonne 855 983 Average realised tariff costs - US destination, $/ tonne 444 712 1 Mid-west premium duty paid applies to approximately 55% of our total volumes in H1 2025 (59% in H1 2024). Recycled aluminium • Q2: production increased due to improved demand for domestically produced secondary aluminium in the United States. Rio Tinto | Second quarter operations review 8

7. Copper Rio Tinto production1 (‘000 tonnes) Q2 2025 vs Q2 2024 vs Q1 2025 Copper Kennecott - Refined metal2 40 -16 % -6 % Escondida - Metal in concentrates 87 +4 % -2 % Escondida - Refined metal 15 -4 % +8 % Oyu Tolgoi - Metal in concentrates 87 +65 % +33 % Total copper production (consolidated basis1) 229 +15 % +9 % 1 Includes Oyu Tolgoi and Kennecott on a 100% consolidated basis, and Escondida on an equity share basis. 2 We continue to process third party concentrate to optimise smelter utilisation, including 11.1 thousand tonnes of cathode produced from purchased concentrate in Q2 2025. Purchased and tolled copper concentrates are excluded from reported production figures and guidance. Sales of cathodes produced from purchased concentrate are included in reported revenues. Kennecott • Continued to successfully navigate challenging geotechnical conditions impacting the south wall of the mine. ◦ Q2: cathode production from third party concentrate was higher, in order to optimise smelter utilisation. ◦ YoY: lower ore availability, driven by geotechnical constraints, limiting concentrate production, combined with depleted concentrate stockpiles. • H2 2025: planned annual maintenance at the concentrator expected to commence in September, along with planned partial rebuild of the smelter, with a duration of approximately 45 days. Escondida • Q2: slightly lower concentrate production due to a reduction in average grade (0.95% in Q2 vs 1.09% in Q1), while refined metal volume increased. The Full SaL project1 achieved first production and is expected to continue to ramp up. • YoY: concentrate production increased mainly due to higher throughput from improved concentrator performance, which more than offset the slightly lower grade in line with the mine plan. Oyu Tolgoi • Q2: record quarter for copper production, due to the continued underground ramp-up with improving head grade and recovery rates. ◦ New material handling records set achieving a monthly average in June of 34ktpd and a single day record high of 47ktpd for the underground mine. • YoY: rising contribution from the higher grade underground mine, with Panel 0 construction complete and the conveyor to surface - the second largest in the world by capacity - becoming operational between these periods. • Engagement continues with Entrée Resources and the Government of Mongolia on the transfer of licences to allow mining in the Panel 1 Entrée joint venture area. • Mine plan: flexibility and options, including bringing Panel 1 or Panel 2 South into production first depending on the timing of the Entrée licence transfer, with no material impact on production guidance. • Project ramp-up remains on track to reach an average of around 500 thousand tonnes of copper per year (100% basis and stated as recoverable metal) from 2028 to 20362. 1 Full SaL is a processing technology that allows the extraction of copper using chlorine-assisted leaching predominantly for sulphidic material. 2The 500 thousand tonnes per annum copper production target (stated as recoverable metal) for the Oyu Tolgoi underground and open pit mines for the years 2028 to 2036 was previously reported in a release to the ASX dated 11 July 2023 “Investor site visit to Oyu Tolgoi copper mine, Mongolia”. All material assumptions underpinning that production target and those production profiles continue to apply and have not materially changed. Rio Tinto | Second quarter operations review 9

8. Minerals Rio Tinto share of production (million tonnes) Q2 2025 vs Q2 2024 vs Q1 2025 Iron ore pellets and concentrate IOC 2.5 +14 % +7 % Rio Tinto share of production (’000 tonnes) Q2 2025 vs Q2 2024 vs Q1 2025 Minerals Borates - B2O3 content 132 +6 % +13 % Titanium dioxide slag 269 +13 % +21 % Rio Tinto share of production (‘000 carats) Q2 2025 vs Q2 2024 vs Q1 2025 Diavik 1,238 +76 % +31 % Iron Ore Company of Canada (IOC) • Q2: improved operational stability across mining operations and processing. Significant focus on improving pit health led to Q2 record for total material moved from the mine. • Annual plant shutdown in June was completed and followed by successful commissioning and ramp- up of production rates. Borates • Q2: the process line scaling issues experienced in Q1 have been resolved. The operations ran with improved plant stability in Q2. Iron and Titanium • Q2: output increased driven by better operational stability and improved furnace efficiency at RTIT Quebec Operations. We also benefited from the restart of a furnace in February at our RTIT Quebec Operations, as stated in our First Quarter Operations Review. • On 3 July 2025, a furnace at RTIT Quebec Operations reached its planned end-of-life, ceasing operations. We now operate six (of nine) furnaces in Quebec and three (of four) furnaces at RBM. • Full year production is expected to be at the lower end of the 1.0 to 1.2 million tonne range reflecting market demand. Lithium Rio Tinto share of production (‘000 tonnes) Q2 2025 vs Q2 2024 Q12 2025 vs Q1 2025 Total lithium carbonate equivalent (LCE) production1 12 NA 17 -29 % 1 Lithium Carbonate Equivalent (LCE) is derived from volumes of lithium carbonate, lithium chloride, and spodumene concentrate. These compounds are used as feedstock in downstream production. 2 Full first quarter lithium carbonate equivalent production from Arcadium was 17kt (20kt on a 100% basis) of which 6kt was produced since completion of the acquisition in March (7kt on a 100% basis). • Q2: integration of Rio Tinto Lithium is progressing as planned: ◦ Lithium hydroxide production and shipments increased in Q2 reflecting growing demand from our EV customers. ◦ Mt Cattlin spodumene operation in Western Australia was placed on care and maintenance by the end of March 2025 as previously communicated by Arcadium Lithium in September 2024. ◦ Lithium carbonate production at Fenix temporarily affected by snowfall-related energy outages in May and transport system issues in April. Both issues have since been resolved. Rio Tinto | Second quarter operations review 10

9. Capital Projects Project Total capital cost (100% unless otherwise stated) Status/Milestones Iron ore Project: Western Range Location: WA, Australia Ownership: Rio Tinto (54%) and China Baowu Steel Group Co. Ltd (46%) Capacity: 25 Mtpa Approval: Sept 2022 First production: March 2025 To note: The project includes construction of a primary crusher and an 18 kilometre conveyor connection to the Paraburdoo processing plant. $1.3bn (Rio Tinto share)1 • Officially opened on 6 June 2025 with Western Australian Premier Roger Cook and Federal Resources Minister Madeleine King joining Yinhawangka Traditional Owners and senior representatives from Rio Tinto and joint venture partner China Baowu Group (Baowu) to mark the milestone. • Production ramp-up over the remainder of 2025 continues, as planned. Project: Brockman (Brockman Syncline 1) Location: WA, Australia Ownership: 100% Capacity: 34 Mtpa Approval: Oct 2024 (Mar 2025 was government approvals) Planned first production: 2027 To note: The project is to extend the life of the Brockman regions in WA and sustain production from iron ore operations $1.8bn • Enabling works continue to progress well. • Key contractors mobilising and main bulk earthworks underway. Project: Hope Downs 2 (incl. Bedded Hilltop) Location: WA, Australia Ownership: Rio Tinto (50%) and Hancock Prospecting (50%) Capacity: 31 Mtpa Approval: September 2024 (June 2025 was government approvals) Planned first production: 2027 To note: The project is to extend the life of the Hope Downs 1 operation in WA. $0.8bn (Rio Tinto share) • Received all necessary State and Federal Government approvals. • Commencement of main works construction now enabled. Rio Tinto | Second quarter operations review 11

Project Total capital cost (100% unless otherwise stated) Status/Milestones Iron ore Project: Simandou Location: Guinea, Africa SimFer mine ownership: SimFer (85%), Government of Guinea (GoG) (15%) SimFer mine capacity: 60 Mtpa (27 Mtpa RT share) Approval: July 2024 Planned first production: 2025 and first shipment accelerated to around November 2025, ramping up over 30 months to full capacity To note: Investment in the Simandou high-grade iron ore project in Guinea in partnership with CIOH, a Chinalco-led consortium (the SimFer joint venture) and co-development of the rail and port infrastructure with Winning Consortium Simandou² (WCS), Baowu and the Republic of Guinea (the partners) for the export of up to 120 million tonnes per year of iron ore mined by SimFer's and WCS's respective mining concessions.³ The SimFer joint venture⁴ will develop, own and operate a 60 million tonne per year⁵ mine in blocks 3 & 4. WCS will construct the project's ~536 kilometre shared dual track main line, a 16 kilometre spur connecting its mine to the mainline as well as the WCS barge port, while SimFer will construct the ~70 kilometre spur line, connecting its mining concession to the main rail line, and the transhipment vessel (TSV) port. $6.2bn (Rio Tinto share) • Simandou first shipment accelerated to around November 2025. Ore will be railed from the SimFer mine to the main rail line via the SimFer rail spur and initially shipped through the WCS port while construction of the SimFer port is finalised. • For 2025, we expect 0.5 to 1.0 Mt of shipments (SimFer scope from Blocks 3 & 4). • Non-managed infrastructure - our partners confirm that construction is progressing well and is on track. Highlights include track laying on the mainline rail, now complete, to enable first shipped ore from both Simandou mines through the rail system and WCS port around November 2025. • SimFer mine4 is on track - bulk earthworks are progressing and permanent process facilities construction has commenced. First ore is expected through the permanent crushing facilities in H2 2026, on schedule and aligned with plan. Ore continues to be crushed and stockpiled through the temporary crushers. • SimFer rail spur - is progressing well, with tunnel excavation breakthrough achieved in June and track laying continuing ahead of plan (connects the multi-use TransGuinean railway line from our mine operations to the port facilities). Bulk earth works and final bridge girders complete. • SimFer port - continues to advance ahead of plan. Fabrication of the transhipment vessels has commenced at the shipyard in China. • Workforce across all the SimFer scope of mine, rail and port has reached 21,800 with 81% national Guinean participation. Aluminium Project: Low-carbon AP60 aluminium smelter Location: Quebec, Canada Ownership: Rio Tinto (100%) Capacity: Project will add 96 new AP60 pots, increasing AP60 capacity by 160,000 tonnes of primary aluminium per annum Approval: June 2023 Planned start date: Commissioning is expected by Q1 2026, smelter fully ramped up by end of 2026 To note: The investment includes up to $113 million of financial support from the Quebec government. This new capacity is expected to be in addition to 30,000 tonnes of new recycling capacity at Arvida, which will open in the fourth quarter of 2025. $1.3bn • Project work progresses. • Construction progress included mechanical, piping, electrical and instrumentation activities with prioritisation on building activities. • Total project costs have increased by $155m to ~$1.3bn (previously $1.1bn) primarily due to contractor performance challenges, external cost inflation and adjustments in delivery model, and commissioning is now expected by Q1 2026 (previously H1 2026) four months faster. Copper Project: Oyu Tolgoi underground mine Location: Mongolia Ownership: Rio Tinto (66%), Government of Mongolia (34%) Capacity: from both the open pit and underground mines, average of ~500kt6 per year from 2028 to 2036. Approval: 2016 Planned production: 2024, ramp-up till 2028 To note: Oyu Tolgoi is set to become the world’s 4th largest copper mine by 2030 $7.06bn • Concentrator conversion - filtration and thickener facilities have commenced load-commissioning. Ball Mill construction is complete, and load commissioning forecast for completion in Q3. • Primary crusher 2 - construction progressing to plan and remains on track to be completed during Q4 2025. Rio Tinto | Second quarter operations review 12

Project Total capital cost (100% unless otherwise stated) Status/Milestones Copper Project: Kennecott open pit extension Location: Utah, United States Ownership: Rio Tinto (100%) Approval: 2019 To note: The project scope includes mine stripping activities and some infrastructure development, including tailings facility expansion. The project will allow mining to continue into a new area of the orebody between 2026 and 2032. $1.8bn • Stripping will continue through 2027, with sustainable ore production from the second phase of the push back expected to be reached in H2 2027. Project: Kennecott North Rim Skarn (NRS)7 underground development Location: Utah, United States Ownership: Rio Tinto (100%) Capacity: around 250,000 tonnes through to 20338 Approval: June 2023 Planned first production: Q4 2025 To note: Original approval for $0.5bn with a further $0.1 billion approved in December 2024 for additional infrastructure and geotechnical controls. $0.6bn • Production from NRS is now expected to commence at the end of 2025 (previously H2 2025). Lithium Project: Rincon expansion Location: Salta province, Argentina Ownership: Rio Tinto (100%) Capacity: 60ktpa (battery grade lithium carbonate) Approval: Dec 2024 Planned first production: 2028 with three-year ramp-up to full capacity To note: Project consists of the 3kt starter plant and 57kt expansion program. The mine is expected to have a 40-year⁹ life and operate in the first quartile of the cost curve. $2.5bn • Starter plant - final system testing and commissioning completed. • Expansion project - construction is scheduled to begin in Q3 2025, subject to permitting. Project: Fenix expansion (1B) Location: Catamarca province, Argentina Ownership: Rio Tinto (100%) Capacity: 10ktpa LCE (battery grade lithium carbonate) Planned first production: 2026 To note: product is carbonate, chloride $0.7bn • Mechanical Vapour Recompression plant commissioned, to support planned first production. Project: Sal de Vida Location: Catamarca province, Argentina Ownership: Rio Tinto (100%) Capacity: 15ktpa Planned first production: 2026 To note: product is carbonate $0.7bn • Project achieved liming plant mechanical completion during the quarter. Project: Nemaska Lithium Location: Quebec, Canada Ownership: Rio Tinto (50%), Investissement Québec (50%) Capacity: 28kpta LCE (100%) Planned first production: 2028 To note: product is integrated lithium hydroxide $1.1bn (Rio Tinto share) • Project work progresses. Rio Tinto | Second quarter operations review 13

1. Rio Tinto share of the Western Range capital cost includes 100% of funding costs for Paraburdoo plant upgrades. 2. WCS is the holder of Simandou North Blocks 1 & 2 (with the Government of Guinea holding a 15% interest in the mining vehicle and WCS holding 85%) and associated infrastructure. WCS was originally held by WCS Holdings, a consortium of Singaporean company, Winning International Group (50%) and Weiqiao Aluminium (part of the China Hongqiao Group) (50%). On 19 June 2024, Baowu Resources completed the acquisition of a 49% share of WCS mine and infrastructure projects with WCS Holdings holding the remaining 51%. In the case of the mine, Baowu also has an option to increase to 51% during operations. During construction, SimFer will hold 34% of the shares in the WCS infrastructure entities with WCS holding the remaining 66%. 3. WCS holds the mining concession for Blocks 1 & 2, while SimFer holds the mining concession for Blocks 3 & 4. SimFer and WCS will independently develop their mines. 4. SimFer Jersey Limited is a joint venture between the Rio Tinto Group (53%) and Chalco Iron Ore Holdings Ltd (CIOH) (47%), a Chinalco-led joint venture of leading Chinese SOEs (Chinalco (75%), Baowu (20%), China Rail Construction Corporation (2.5%) and China Harbour Engineering Company (2.5%)). SimFer S.A. is the holder of the mining concession covering Simandou Blocks 3 & 4, and is owned by the Guinean State (15%) and SimFer Jersey Limited (85%). SimFer Infraco Guinée S.A. will deliver SimFer’s scope of the co-developed rail and port infrastructure, and is co-owned by SimFer Jersey (85%) and the Guinean State (15%). SimFer Jersey will ultimately own 42.5% of La Compagnie du Transguinéen, which will own and operate the co-developed infrastructure during operations. 5. The estimated annualised capacity of approximately 60 million dry tonnes per annum iron ore for the Simandou life of mine schedule was previously reported in a release to the Australian Securities Exchange (ASX) dated 6 December 2023 titled “Investor Seminar 2023”. Rio Tinto confirms that all material assumptions underpinning that production target continue to apply and have not materially changed. 6. The 500 thousand tonne per year copper production target (stated as recoverable metal) for the Oyu Tolgoi underground and open pit mines for the years 2028 to 2036 was previously reported in a release to the Australian Securities Exchange (ASX) dated 11 July 2023 “Investor site visit to Oyu Tolgoi copper mine, Mongolia”. All material assumptions underpinning that production target continue to apply and have not materially changed. 7. The NRS Mineral Resources and Ore Reserves, together with the Lower Commercial Skarn (LCS) Mineral Resources and Ore Reserves, form the Underground Skarns Mineral Resources and Ore Reserves. 8. The 250 thousand tonne copper production target for the Kennecott underground mines over the years 2023 to 2033 was previously reported in a release to the Australian Securities Exchange (ASX) dated 20 June 2023 "Rio Tinto invests to strengthen copper supply in US”. All material assumptions underpinning that production target continue to apply and have not materially changed. 9. The production target of approximately 53 kt of battery grade lithium carbonate per year for a period of 40 years was previously reported in a release to the ASX dated 4 December 2024 titled “Rincon Project Mineral Resources and Ore Reserves: Table 1”. Rio Tinto confirms that all material assumptions underpinning that production target continue to apply and have not materially changed. Plans are in place to build for a capacity of 60 kt of battery grade lithium carbonate per year with debottlenecking and improvement programs scheduled to unlock this additional throughput. Rio Tinto | Second quarter operations review 14

10. Future Projects Project Status Iron Ore: Pilbara brownfields Projects: Pilbara mine replacement projects - Greater Nammuldi and West Angelas Location: WA, Australia Capacity: over the medium term, our Pilbara system capacity remains between 345 and 360 million tonnes per year. Meeting this range, and the planned product mix, will require the approval and delivery of the next tranche of replacement mines over the next five years. • Continue to advance our next tranche of Pilbara mine replacement projects. • Environmental and heritage approvals are underway, with timelines subject to these approvals. • The Greater Nammuldi project continues to progress at a rate behind the original development schedule. Iron Ore: Rhodes Ridge Location: WA, Australia Ownership: Rio Tinto (50%), Mitsui & Co. (40%), AMB Holdings Pty Ltd (10%) Capacity: 40 Mtpa (initial capacity) First ore: end of decade To note: pre-feasibility study remains on track to be completed in 2025 subject to relevant approvals. The development would use Rio Tinto’s rail, port and power infrastructure. • Mitsui’s proposed acquisition of a 40% interest in the Rhodes Ridge Joint Venture from Rio Tinto’s partners remains subject to regulatory approvals and other closing conditions. Copper: Resolution Location: Arizona, US Ownership: Rio Tinto (55%), BHP (45%) To note: proposed underground copper mine in the Copper Triangle, in Arizona. • United States Forest Service (USFS) republished the Final Environmental Impact Statement and draft Record of Decision on 20 June 2025, which starts a 45-day comment period and allows the USFS to complete the congressionally mandated land exchange. The land exchange will enable the future underground mine development and place thousands of acres of land into permanent conservation. • On 27 May 2025, the U.S. Supreme Court denied Apache Stronghold’s appeal requesting a hearing in its case to stop the land exchange between Resolution Copper and the federal government. Then, on 23 June 2025, Apache Stronghold filed a petition asking the Court to reconsider its decision. • Resolution Copper continues to engage several federally recognised Native American Tribes to partner on co- management of cultural heritage and advance the Emory Oak collaborative restoration program. Copper: Winu Location: WA, Australia Ownership: Rio Tinto (70%), Sumitomo Metal Mining (SMM) (30%), once the transaction has closed. To note: In late 2017, we discovered copper-gold mineralisation at the Winu project (Paterson Province in Western Australia). In 2021, we reported our first Indicated Mineral Resource. The pathway remains subject to regulatory and other required approvals. The pre- feasibility study with the initial development of processing capacity of up to 10 million tonnes per year continues and is expected to be completed in 2025, along with the submission of an Environmental Review Document under the EPA Environmental Impact Assessment process. Project Agreement negotiations with Nyangumarta and the Martu Traditional Owner Groups remain our priority. • Following the term sheet signed in December 2024, Rio Tinto and Sumitomo Metal Mining Co (SMM) signed final joint venture agreements during May. The transaction is expected to close in 2025, subject to regulatory approvals and the satisfaction of customary conditions. • A pre-feasibility study for the Winu project with an initial development of processing capacity of up to 10 Mtpa is expected to be completed in 2025, along with the submission of an Environmental Review Document under the Western Australian EPA Environmental Impact Assessment process. Copper: La Granja Location: Cajamarca, Peru Ownership: Rio Tinto (45%), First Quantum Minerals (55%) To note: In August 2023, we completed a transaction to form a joint venture with First Quantum Minerals (FQM) that will work to unlock the development of the La Granja project, one of the largest undeveloped copper deposits in the world, with potential to be a large, long-life operation. FQM acquired its stake for $105 million. It will invest up to a further $546 million into the joint venture to sole fund capital and operational costs to take the project through a feasibility study and toward development. • Drilling program completed and progressing the project’s feasibility study. Rio Tinto | Second quarter operations review 15

Project Status Aluminium: Arctial partnership Location: Finland To note: Partnership agreement with the Swedish investment company Vargas, Mitsubishi Corporation and other international and local industry partners to study a low carbon aluminium greenfield opportunity in Finland. As the strategic industrial partner, Rio Tinto will provide the Arctial partnership with access to its proven industry- leading AP60 technology and assist in what would be the first AP60 deployment in an aluminium smelter outside Quebec, Canada. • Arctial JV was formally established in Q2 2025. Pre-feasibility study and environmental impact study assessment have both started and are expected to run until Q4 2025. Lithium Location: Canada and Argentina • Canada: work in progress at Galaxy. • Argentina: work in progress at Cauchari, Fenix and Sal de Vida next phases. Lithium: Jadar Location: Serbia Ownership: Rio Tinto (100%) To note: Development of the greenfield Jadar lithium-borates project in Serbia will include an underground mine with associated infrastructure and equipment, as well as a beneficiation chemical processing plant. • On 4 June 2025, the European Union designated Jadar as a strategic project under the Critical Raw Materials Act (CRMA), confirming it is crucial to Serbia and Europe’s secure supply of materials for the energy transition. This provides additional independent assurance that the project can be developed according to Serbian and EU standards. • Continued the application process for obtaining the Exploitation Field Licence (EFL) (the EFL is essential for commencing fieldwork, including detailed geotechnical investigations). • We remain focused on consultation with all key stakeholders, including providing comprehensive factual information about the project. Rio Tinto | Second quarter operations review 16

11. Exploration and evaluation Commodities Advanced projects Greenfield/ Brownfield programs QoQ change Bauxite East Arnhem land, Australia NA Battery Materials Nickel Greenfield: Finland Lithium Greenfield: Australia, Canada, Chile, China, Finland, Kazakhstan, Rwanda, USA NA Copper Copper: Nuevo Cobre, Chile Copper Greenfield: Angola, Australia, Chile, China, Colombia, Kazakhstan, Laos, Peru, Papua New Guinea, Serbia, US, Zambia NA Diamonds Chiri, Angola NA Iron Ore Pilbara, Australia Greenfield and Brownfield: Pilbara, Australia NA Minerals Potash: Texas, Canada. HMS: Kamiesberg, South Africa (3rd party operated). NA • Rio Tinto has a strong portfolio of exploration projects with activity in 17 countries across eight commodities. • The bulk of the exploration expenditure during the quarter was focused on copper in Angola, Australia, Chile, Colombia, Peru and Serbia, lithium in Australia, Canada, Chile and Rwanda, and diamonds in Angola. Lithium pipeline: • Rio Tinto signed a binding agreement to form a joint venture with Corporación Nacional Del Cobre de Chile (Codelco) to develop and operate a high-grade lithium project in the Salar de Maricunga SpA (“the Company”) in Chile. The investment includes: ◦ $350 million1,2 of initial funding into the Company towards additional studies and resource analysis to progress the project through to a final investment decision. ◦ $500 million1 into the Company once a decision is made to proceed with the project, towards construction costs. These milestones, subject to further studies, are targeted to occur before the end of the decade. ◦ $50 million into the Company if the joint venture achieves its aim of delivering first lithium by the end of 2030. ◦ The transaction to form the joint venture is expected to close by the end of the first quarter of 2026, subject to receipt of all applicable regulatory approvals and the satisfaction of other customary closing conditions. • Additionally, Rio Tinto was selected as the preferred bidder to partner with Empresa Nacional de Minería (ENAMI) to develop the Salares Altoandinos Lithium Project3. Rio Tinto is focused on advancing towards binding agreements as quickly as possible. ◦ Rio Tinto will provide an estimated staged $425 million in cash and non-cash contributions into the entity, including its Direct Lithium Extraction (DLE) Technology. The cash contributions will include staged spending to sole fund the pre-feasibility study and further studies to enable a final investment decision. 1 This payment includes Rio Tinto’s 49.99% share of costs. 2 Subject to customary closing adjustments. 3 Under the terms of the proposal, Rio Tinto would acquire an initial 51% stake in the project with ENAMI holding the remaining 49%. Rio Tinto | Second quarter operations review 17

12. Second quarter public releases 1 April 2025 | Rio Tinto discovers exceptional yellow diamond from its Diavik Diamond Mine 3 April 2025 | Construction begins on Rio Tinto’s first Western Australian-made iron ore rail cars 4 April 2025 | Rio Tinto increases Australian supplier spend to A$17.7 billion 4 April 2025 | Rio Tinto spends record A$10 billion with suppliers in Western Australia in 2024 8 April 2025 | Primetals Technologies with Strategic Partner Mitsubishi Corporation, voestalpine, and Rio Tinto to Implement Hydrogen-Based Ironmaking Plant 17 April 2025 | Rio Tinto and AMG Metals & Materials to assess low-carbon aluminium project in India 6 May 2025 | Rio Tinto’s Diavik Diamond Mine recognized with Towards Sustainable Mining (TSM) Environmental Excellence Award 7 May 2025 | Rio Tinto extracts first gallium from its alumina refining process with partner Indium Corporation 12 May 2025 | Rio Tinto and Sumitomo Metal Mining sign Definitive Agreement for Winu Project joint venture 15 May 2025 | Rio Tinto invests R6.9 million towards a farmer support programme in King Cetshwayo District 15 May 2025 | Rio Tinto invests to modernise century-old hydroelectric power plant in Quebec 19 May 2025 | Rio Tinto partners with Codelco to develop lithium project in Chile’s Salar de Maricunga 22 May 2025 | Rio Tinto to start early works and final studies to increase Amrun mine’s bauxite production on Queensland’s Cape York Peninsula 22 May 2025 | Rio Tinto announces Chief Executive succession plan 23 May 2025 | Rio Tinto confirmed as preferred partner on world-class Salares Altoandinos lithium project 2 June 2025 | PKKP and Rio Tinto sign Co-Management Agreement 6 June 2025 | Rio Tinto and Baowu open Western Range iron ore mine in the Pilbara with Yinhawangka Traditional Owners 6 June 2025 | Update on Oyu Tolgoi mine plan 9 June 2025 | Rio Tinto seeks innovative collaborators at London Tech Week 12 June 2025 | Rio Tinto launches ore sorting demonstration project at is Havre-Saint-Pierre mine 17 June 2025 | NeoSmelt welcomes Federal Government support and signs two new participants for groundbreaking steel decarbonisation project 18 June 2025 | Rio Tinto IOC invests $800,000 to expand childcare offering at Lil Snowflakes daycare 24 June 2025 | New A$5 million partnership to support Pilbara Aboriginal Health Alliance 24 June 2025 | Rio Tinto and Hancock Prospecting to invest $1.6 billion to develop the Hope Downs 2 project in Western Australia’s Pilbara Rio Tinto | Second quarter operations review 18

Contacts Please direct all enquiries to media.enquiries@riotinto.com Media Relations, United Kingdom Matthew Klar M +44 7796 630 637 David Outhwaite M +44 7787 597 493 Media Relations, Australia Matt Chambers M +61 433 525 739 Michelle Lee M +61 458 609 322 Rachel Pupazzoni M +61 438 875 469 Media Relations, Americas Jesse Riseborough M +61 436 653 412 Simon Letendre M +1 514 796 4973 Malika Cherry M +1 418 592 7293 Vanessa Damha M +1 514 715 2152 Investor Relations, United Kingdom Rachel Arellano M +44 7584 609 644 David Ovington M +44 7920 010 978 Laura Brooks M +44 7826 942 797 Weiwei Hu M +44 7825 907 230 Investor Relations, Australia Tom Gallop M +61 439 353 948 Phoebe Lee M +61 413 557 780 Rio Tinto plc 6 St James’s Square London SW1Y 4AD United Kingdom T +44 20 7781 2000 Registered in England No. 719885 Rio Tinto Limited Level 43, 120 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404 This announcement is authorised for release to the market by Andy Hodges, Rio Tinto’s Group Company Secretary. riotinto.com LEI: 213800YOEO5OQ72G2R82 Classification: 3.1 Additional regulated information required to be disclosed under the laws of a Member State Forward-looking statement This announcement includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts included in this report, including, without limitation, those regarding Rio Tinto’s financial position, production guidance, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Rio Tinto’s products, production forecasts and reserve and resource positions), are forward-looking statements. The words “intend”, “aim”, “project”, “anticipate”, “estimate”, “plan”, “believes”, “expects”, “may”, “should”, “will”, “target”, “set to” or similar expressions, commonly identify such forward-looking statement. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Rio Tinto, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such forward-looking statements are based on numerous assumptions regarding Rio Tinto’s present and future business strategies and the environment in which Rio Tinto will operate in the future. A discussion of the important factors that could cause Rio Tinto’s actual results, performance or achievements to differ materially from those in the forward-looking statements can be found in Rio Tinto’s most recent Annual Report and accounts in Australia and the United Kingdom and the most recent Annual Report on Form 20-F filed with the United States Securities and Exchange Commission (the “SEC”) or Form 6-Ks furnished to, or filed with, the SEC. Forward-looking statements should, therefore, be construed in light of the risk factors discussed in such documents, and undue reliance should not be placed on forward-looking statements. These forward-looking statements speak only as of the date of this report. Rio Tinto expressly disclaims any obligation or undertaking (except as required by applicable law, the UK Listing Rules, the Disclosure Guidance and Transparency Rules of the Financial Conduct Authority and the Listing Rules of the Australian Securities Exchange) to release publicly any updates or revisions to any forward-looking statement contained herein to reflect any change in Rio Tinto’s expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. Nothing in this announcement should be interpreted to mean that future earnings per share of Rio Tinto plc or Rio Tinto Limited will necessarily match or exceed its historical published earnings per share. Past performance cannot be relied on as a guide to future performance. Rio Tinto | Second quarter operations review 19

Rio Tinto production summary Rio Tinto share of production Quarter Half Year % change Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 2024 H1 2025 H1 Q2 25 vs Q2 24 Q2 25 vs Q1 25 H1 2025 vs H1 2024 Principal commodities Alumina ('000 t) 1,676 1,770 1,992 1,921 1,815 3,540 3,735 +8 % -6 % +6 % Aluminium (Primary) ('000 t) 824 809 837 829 842 1,650 1,671 +2 % +2 % +1 % Bauxite ('000 t) 14,723 15,100 15,412 14,966 15,644 28,142 30,610 +6 % +5 % +9 % Borates ('000 t) 125 126 132 117 132 246 249 +6 % +13 % +1 % Copper (consolidated) ('000 t) 199 185 228 210 229 379 438 +15 % +9 % +16 % Iron Ore ('000 t) 69,712 73,160 76,102 62,408 73,548 138,413 135,956 +6 % +18 % -2 % Lithium carbonate equivalent (LCE) (‘000 t) NA NA NA 17 12 NA 29 NA -29 % NA Titanium dioxide slag ('000 t) 238 263 235 223 269 492 491 +13 % +21 % 0 % Other Metals & Minerals Diamonds ('000 cts) 702 542 775 942 1,238 1,441 2,179 +76 % +31 % +51 % Gold - mined ('000 oz) 67.1 69.4 79.0 78.7 112.9 133.6 191.6 +68 % +44 % +43 % Gold - refined ('000 oz) 39.7 25.7 43.1 34.0 32.1 75.0 66.0 -19 % -6 % -12 % Molybdenum ('000 t) 0.6 0.5 0.8 1.0 1.1 1.3 2.2 +79 % +7 % +62 % Salt ('000 t) 1,540 1,511 1,347 836 1,375 2,965 2,211 -11 % +65 % -25 % Silver - mined ('000 oz) 1,072 1,046 1,144 1,159 1,474 2,046 2,632 +37 % +27 % +29 % Silver - refined ('000 oz) 606 392 766 635 509 1,156 1,145 -16 % -20 % -1 % Throughout this report, figures in italics indicate adjustments made since the figure was previously quoted on the equivalent page or reported for the first time. Production figures are sometimes more precise than the rounded numbers shown, hence small differences may result between the total of the quarter figures and the year to date figures. Rio Tinto | Second quarter operations review 20

Rio Tinto share of production Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 ALUMINA Production ('000 tonnes) Jonquière (Vaudreuil) 100 % 328 323 350 355 340 681 695 Jonquière (Vaudreuil) specialty Alumina plant 100 % 30 28 26 25 30 57 55 Queensland Alumina 80 % 602 693 737 685 699 1,277 1,384 São Luis (Alumar) 10 % 93 93 97 90 93 179 183 Yarwun 100 % 624 634 782 765 653 1,346 1,418 Rio Tinto total alumina production 1,676 1,770 1,992 1,921 1,815 3,540 3,735 ALUMINIUM Primary production ('000 tonnes) Australia - Bell Bay 100 % 47 47 47 46 48 93 94 Australia - Boyne Island (a) 74 % 75 76 93 92 92 150 184 Australia - Tomago 52 % 75 77 77 72 73 148 145 Canada - six wholly owned 100 % 399 395 398 387 392 804 779 Canada - Alouette (Sept-Îles) 40 % 63 63 64 62 62 126 124 Canada - Bécancour 25 % 30 30 30 28 30 59 58 Iceland - ISAL (Reykjavik) 100 % 50 52 51 48 51 99 99 New Zealand - Tiwai Point (b) 100 % 65 49 59 74 75 131 149 Oman - Sohar 20 % 20 20 20 20 20 40 40 Rio Tinto total primary aluminium production 824 809 837 829 842 1,650 1,671 Recycled production ('000 tonnes) Matalco 50 % 70 62 58 66 74 144 140 Rio Tinto total recycled aluminium production 70 62 58 66 74 144 140 (a) On 1 November 2024, Rio Tinto’s ownership interest in Boyne Smelters Limited (BSL) increased from 71.04% to 73.5%. Production is reported including this change from 1 November 2024. (b) On 1 November 2024, Rio Tinto’s ownership interest in Tiwai Point Smelter (NZAS) increased from 79.36% to 100%. Production is reported including this change from 1 November 2024. BAUXITE Production ('000 tonnes) (a) Gove 100 % 3,172 3,073 3,372 3,141 3,303 6,276 6,444 Porto Trombetas 22 % 667 737 623 519 676 1,176 1,194 Sangaredi (b) 1,622 1,544 1,571 2,290 2,028 3,204 4,318 Weipa 100 % 9,262 9,747 9,846 9,017 9,637 17,486 18,654 Rio Tinto total bauxite production 14,723 15,100 15,412 14,966 15,644 28,142 30,610 (a) Mine production figures for metals refer to the total quantity of metal produced in concentrates, leach liquor or doré bullion irrespective of whether these products are then refined onsite, except for the data for bauxite and iron ore which represent production of marketable quantities of ore plus concentrates and pellets. (b) Rio Tinto has a 22.95% shareholding in the Sangaredi mine but benefits from 45.0% of production. Rio Tinto | Second quarter operations review 21

Rio Tinto share of production Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 BORATES Production ('000 tonnes B2O3 content) Rio Tinto Borates - borates 100 % 125 126 132 117 132 246 249 COPPER Mine production ('000 tonnes) (a) Bingham Canyon 100 % 32.3 27.4 31.2 27.5 40.7 64.8 68.3 Escondida 30 % 86.4 90.4 104.8 98.7 96.4 163.5 195.1 Oyu Tolgoi 66 % 34.7 33.0 43.8 43.0 57.3 65.1 100.3 Rio Tinto total mine production 153.3 150.8 179.8 169.3 194.4 293.4 363.7 Refined production ('000 tonnes) Escondida 30 % 15.2 11.8 13.3 13.6 14.6 29.9 28.2 Kennecott (b) 100 % 47.5 42.5 55.4 42.3 39.8 95.3 82.2 Rio Tinto total refined production 62.7 54.3 68.7 55.9 54.4 125.2 110.3 Copper production – consolidated basis (‘000 tonnes) Kennecott (b) - Production of refined metal 47.5 42.5 55.4 42.3 39.8 95.3 82.2 Escondida - Mill production (metal in concentrates) (c) 83.9 81.0 92.9 88.7 87.3 155.4 176.0 Escondida - Refined production from leach plants 15.2 11.8 13.3 13.6 14.6 29.9 28.2 Oyu Tolgoi - Metal in concentrates 52.5 50.0 66.3 65.2 86.8 98.6 152.0 Rio Tinto total production - consolidated basis 199.1 185.3 228.0 209.8 228.5 379.3 438.3 (a) Mine production figures for metals refer to the total quantity of metal produced in concentrates, leach liquor or doré bullion irrespective of whether these products are then refined onsite, except for the data for bauxite and iron ore which represent production of marketable quantities of ore plus concentrates and pellets. (b) We continue to process third party concentrate to optimise smelter utilisation, including 11.1 thousand tonnes of cathode produced from purchased concentrate in Q2 2025. Purchased and tolled copper concentrates are excluded from reported production figures and guidance. Sales of cathodes produced from purchased concentrate are included in reported revenues. (c) Mill production was previously reported together with recoverable copper in ore stacked for leaching as mined production. Rio Tinto | Second quarter operations review 22

Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 DIAMONDS Production ('000 carats) Diavik 100 % 702 542 775 942 1,238 1,441 2,179 GOLD Metal in concentrates production ('000 tonnes) (a) Bingham Canyon 100 % 22.5 22.1 24.0 24.7 36.5 49.2 61.2 Escondida 30 % 13.6 14.1 11.2 13.4 12.1 25.3 25.4 Oyu Tolgoi 66 % 30.9 33.3 43.8 40.6 64.4 59.2 105.0 Rio Tinto total mine production 67.1 69.4 79.0 78.7 112.9 133.6 191.6 Refined production ('000 ounces) Kennecott (b) 100 % 39.7 25.7 43.1 34.0 32.1 75.0 66.0 (a) Mine production figures for metals refer to the total quantity of metal produced in concentrates, leach liquor or doré bullion irrespective of whether these products are then refined onsite, except for the data for bauxite and iron ore which represent production of marketable quantities of ore plus concentrates and pellets. (b) We continue to process third party concentrate to optimise smelter utilisation, including 11.1 thousand tonnes of cathode produced from purchased concentrate in Q2 2025. Purchased and tolled copper concentrates are excluded from reported production figures and guidance. Sales of cathodes produced from purchased concentrate are included in reported revenues. Rio Tinto | Second quarter operations review 23

Rio Tinto share of production Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 IRON ORE Production ('000 tonnes) (a) Hamersley mines (b) 54,691 57,096 59,656 49,637 57,422 108,064 107,059 Hope Downs 50 % 5,044 5,753 5,100 3,608 5,206 10,125 8,814 Iron Ore Company of Canada 59 % 2,185 2,116 2,532 2,317 2,488 4,798 4,805 Robe River - Pannawonica (Mesas J and A) 53 % 4,186 3,844 4,549 3,538 3,960 8,431 7,498 Robe River - West Angelas 53 % 3,607 4,352 4,265 3,308 4,472 6,995 7,780 Rio Tinto iron ore production ('000 tonnes) 69,712 73,160 76,102 62,408 73,548 138,413 135,956 Breakdown of Production: Pilbara Blend and SP10 Lump (c) 20,828 22,460 23,460 19,385 23,186 40,714 42,571 Pilbara Blend and SP10 Fines (c) 31,277 33,320 35,158 27,860 32,970 61,114 60,830 Robe Valley Lump 1,546 1,488 1,825 1,536 1,679 3,080 3,216 Robe Valley Fines 2,640 2,356 2,723 2,002 2,280 5,351 4,282 Yandicoogina Fines (HIY) 11,235 11,421 10,402 9,309 10,944 23,357 20,253 Pilbara iron ore production ('000 tonnes) 67,527 71,045 73,570 60,091 71,060 133,615 131,151 IOC Concentrate 930 842 1,062 948 1,179 2,060 2,127 IOC Pellets 1,255 1,274 1,470 1,369 1,309 2,738 2,678 IOC iron ore production ('000 tonnes) 2,185 2,116 2,532 2,317 2,488 4,798 4,805 Breakdown of Shipments: Pilbara Blend Lump 12,463 14,240 13,079 9,775 11,159 25,307 20,933 Pilbara Blend Fines 24,702 26,626 23,351 18,825 21,520 47,870 40,345 Robe Valley Lump 1,337 1,166 1,508 1,159 1,385 2,560 2,544 Robe Valley Fines 3,095 2,565 3,055 2,232 2,638 6,038 4,870 Yandicoogina Fines (HIY) 11,364 11,794 10,585 9,350 10,636 23,592 19,986 SP10 Lump (c) 5,071 5,715 7,341 8,117 8,324 9,544 16,441 SP10 Fines (c) 8,218 10,366 13,421 11,405 12,459 17,439 23,864 Pilbara iron ore shipments ('000 tonnes) (d) 66,250 72,471 72,341 60,862 68,120 132,350 128,982 Pilbara iron ore shipments - consolidated basis ('000 tonnes) (d) (f) 68,281 74,211 74,213 62,537 69,985 136,191 132,523 IOC Concentrate 986 1,228 1,140 646 1,276 2,147 1,922 IOC Pellets 1,438 1,157 1,357 1,356 1,382 2,931 2,737 IOC Iron ore shipments ('000 tonnes) (d) 2,423 2,385 2,497 2,001 2,658 5,078 4,659 Rio Tinto iron ore shipments ('000 tonnes) (d) 68,673 74,856 74,838 62,863 70,778 137,428 133,641 Rio Tinto iron ore sales ('000 tonnes) (e) 71,920 74,078 77,648 64,828 74,335 141,275 139,163 (a) Mine production figures for metals refer to the total quantity of metal produced in concentrates, leach liquor or doré bullion irrespective of whether these products are then refined onsite, except for the data for bauxite and iron ore which represent production of marketable quantities of ore plus concentrates and pellets. (b) Includes 100% of production from Paraburdoo, Mt Tom Price, Western Turner Syncline, Marandoo, Yandicoogina, Brockman, Nammuldi, Silvergrass, Channar, Gudai-Darri, Eastern Range and Western Range mines. Whilst Rio Tinto owns 54% of the Eastern Range and the Western Range mines, under the terms of the joint venture agreement, Hamersley Iron manages the operation and is obliged to purchase all mine production from the joint venture and therefore all of the production is included in Rio Tinto's share of production. (c) SP10 includes other lower grade products. (d) Shipments includes material shipped to our portside trading facility in China which may not be sold onwards in the same period. (e) Represents the difference between amounts shipped to portside trading and onward sales from portside trading, and third party volumes sold. (f) While Rio Tinto has a 53% net beneficial interest in Robe River Iron Associates, it recognises 65% of the assets, liabilities, sales revenues and expenses in its accounts (as 30% is held through a 60% owned subsidiary and 35% is held through a 100% owned subsidiary). The consolidated basis sales reported here include Robe River Iron Associates on a 65% basis to enable comparison with revenue reported in the financial statements. Rio Tinto | Second quarter operations review 24

Rio Tinto share of production Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 Lithium Production ('000 tonnes) Lithium carbonate (a) NA NA NA 12 11 NA 24 Lithium hydroxide 100 % NA NA NA 4 5 NA 10 Spodumene 100 % NA NA NA 34 0 NA 34 Other lithium specialIties (LCE) 100 % NA NA NA 1 1 NA 3 Total lithium carbonate equivalent (LCE) production (b) NA NA NA 17 (c) 12 NA 29 (a) Lithium carbonate quantities reflect Rio Tinto’s 66.5% ownership in Olaroz, 100% ownership in Fenix (b) The lithium value chain is vertically integrated and as a result production volumes are not additive. Lithium Carbonate Equivalent (LCE) is derived from volumes of lithium carbonate, lithium chloride, and spodumene concentrate. These compounds are used as feedstock in downstream production. (c) Full first quarter lithium carbonate equivalent production from Arcadium was 17kt (20kt on a 100% basis) of which 6kt was produced since completion of the acquisition in March (7kt on a 100% basis). Full first quarter lithium carbonate equivalent shipments from Arcadium was 12kt (15kt on a 100% basis) of which 4kt was shipped since completion of the acquisition in March (5kt on a 100% basis). MOLYBDENUM Mine production ('000 tonnes) (a) Bingham Canyon 100 % 0.6 0.5 0.8 1.0 1.1 1.3 2.2 (a) Mine production figures for metals refer to the total quantity of metal produced in concentrates, leach liquor or doré bullion irrespective of whether these products are then refined onsite, except for the data for bauxite and iron ore which represent production of marketable quantities of ore plus concentrates and pellets. SALT Production ('000 tonnes) Dampier Salt (a) 68 % 1,540 1,511 1,347 836 1,375 2,965 2,211 (a) In December 2024, we completed the sale of Dampier Salt Limited’s Lake MacLeod operation to Leichhardt Industrial Group. Following this divestment, we continue to operate solar salt sites at Dampier and Port Hedland. SILVER Metal in concentrates production ('000 tonnes) (a) Bingham Canyon 100 % 368 368 377 357 539 738 896 Escondida 30 % 465 464 486 536 572 863 1,108 Oyu Tolgoi 66 % 239 214 281 266 363 444 629 Rio Tinto total mine production 1,072 1,046 1,144 1,159 1,474 2,046 2,632 Refined production ('000 ounces) Kennecott (b) 100 % 606 392 766 635 509 1,156 1,145 (a) Mine production figures for metals refer to the total quantity of metal produced in concentrates, leach liquor or doré bullion irrespective of whether these products are then refined onsite, except for the data for bauxite and iron ore which represent production of marketable quantities of ore plus concentrates and pellets. (b) We continue to process third party concentrate to optimise smelter utilisation, including 11.1 thousand tonnes of cathode produced from purchased concentrate in Q2 2025. Purchased and tolled copper concentrates are excluded from reported production figures and guidance. Sales of cathodes produced from purchased concentrate are included in reported revenues. Rio Tinto | Second quarter operations review 25

TITANIUM DIOXIDE SLAG Production ('000 tonnes) Rio Tinto Iron & Titanium (a) 100 % 238 263 235 223 269 492 491 (a) Quantities comprise 100% of Rio Tinto Fer et Titane and Rio Tinto's 74% interest in Richards Bay Minerals (RBM). Production figures are sometimes more precise than the rounded numbers shown, hence small differences may result between the total of the quarter figures and the year to date figures. Rio Tinto percentage interest shown above is at 30 June 2025. Rio Tinto | Second quarter operations review 26

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 ALUMINA Smelter Grade Alumina - Aluminium Group Alumina production ('000 tonnes) Australia Queensland Alumina Refinery - Queensland 80 % 752 866 921 856 874 1,597 1,730 Yarwun refinery - Queensland 100 % 624 634 782 765 653 1,346 1,418 Brazil São Luis (Alumar) refinery 10 % 926 927 967 901 926 1,793 1,827 Canada Jonquière (Vaudreuil) refinery - Quebec (a) 100 % 328 323 350 355 340 681 695 (a) Jonquière’s (Vaudreuil’s) production shows smelter grade alumina only and excludes hydrate produced and used for specialty alumina. Speciality Alumina - Aluminium Group Speciality alumina production ('000 tonnes) Canada Jonquière (Vaudreuil) plant – Quebec 100 % 30 28 26 25 30 57 55 Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 27

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 ALUMINIUM Primary Aluminium Primary aluminium production ('000 tonnes) Australia Bell Bay smelter - Tasmania 100 % 47 47 47 46 48 93 94 Boyne Island smelter - Queensland (a) 74 % 126 127 128 125 125 252 250 Tomago smelter - New South Wales 52 % 146 150 149 140 141 288 282 Canada Alma smelter - Quebec 100 % 119 120 122 119 120 240 239 Alouette (Sept-Îles) smelter - Quebec 40 % 158 158 159 155 154 315 309 Arvida smelter - Quebec 100 % 37 36 37 36 36 80 71 Arvida AP60 smelter - Quebec 100 % 15 15 15 15 15 31 30 Bécancour smelter - Quebec 25 % 119 119 120 113 120 235 233 Grande-Baie smelter - Quebec 100 % 57 57 58 56 56 114 113 Kitimat smelter - British Columbia 100 % 107 103 102 100 102 214 202 Laterrière smelter - Quebec 100 % 63 64 64 62 62 124 124 Iceland ISAL (Reykjavik) smelter 100 % 50 52 51 48 51 99 99 New Zealand Tiwai Point smelter (b) 100 % 82 62 63 74 75 165 149 Oman Sohar smelter 20 % 99 100 101 99 101 198 200 Recycled Aluminium Recycled aluminium production ('000 tonnes) Matalco 50 % 139 125 116 132 147 288 279 (a) On 1 November 2024, Rio Tinto’s ownership interest in Boyne Smelters Limited (BSL) increased from 71.04% to 73.5%. Production is reported including this change from 1 November 2024. (b) On 1 November 2024, Rio Tinto’s ownership interest in Tiwai Point Smelter (NZAS) increased from 79.36% to 100%. Production is reported including this change from 1 November 2024. Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 28

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 BAUXITE Bauxite production ('000 tonnes) Australia Gove mine - Northern Territory 100 % 3,172 3,073 3,372 3,141 3,303 6,276 6,444 Weipa mine - Queensland 100 % 9,262 9,747 9,846 9,017 9,637 17,486 18,654 Brazil Porto Trombetas (MRN) mine 22 % 3,034 3,348 2,831 2,357 3,071 5,344 5,428 Guinea Sangaredi mine (a) 23 % 3,604 3,432 3,491 5,089 4,506 7,121 9,595 Rio Tinto share of bauxite shipments Share of total bauxite shipments ('000 tonnes) 15,177 15,511 15,513 14,390 15,670 27,892 30,060 Share of third party bauxite shipments ('000 tonnes) 10,691 11,120 10,627 9,807 11,147 19,187 20,954 (a) Rio Tinto has a 22.95% shareholding in the Sangaredi mine but benefits from 45.0% of production. Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 BORATES Rio Tinto Borates - borates 100 % US Borates ('000 tonnes) (a) 125 126 132 117 132 246 249 (a) Production is expressed as B2O3 content. Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 COPPER & GOLD Escondida 30 % Chile Sulphide ore to concentrator ('000 tonnes) 34,377 32,488 35,293 32,889 36,490 66,030 69,379 Average copper grade (%) 0.99 1.00 1.06 1.09 0.95 0.96 1.01 Contained copper ('000 tonnes) 279.5 269.9 309.8 295.6 291.0 518.2 586.6 Contained gold ('000 ounces) 45.4 47.0 37.3 44.5 40.3 84.4 84.8 Contained silver ('000 ounces) 1,549 1,546 1,619 1,787 1,906 2,877 3,693 Recoverable copper in ore stacked for leaching ('000 tonnes) (a) 8.4 31.4 39.5 33.5 30.3 27.0 63.8 Refined production from leach plants: Copper cathode production ('000 tonnes) 50.7 39.4 44.4 45.2 48.7 99.8 93.9 Sales of metals: Copper in concentrates ('000 tonnes) (b) 261 273 275 309 286 465 595 Copper cathode ('000 tonnes) 55 38 43 47 53 99 100 Gold ('000 ounces) (b) 45 47 37 45 40 84 85 Silver ('000 ounces) (b) 1,549 1,546 1,619 1,787 1,906 2,877 3,693 (a) The calculation of copper in material mined for leaching is based on ore stacked at the leach pad. (b) Payable metals in concentrates Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 29

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 COPPER & GOLD (continued) Kennecott Bingham Canyon mine 100 % Utah, US Ore treated ('000 tonnes) 10,257 9,149 10,487 9,339 10,630 18,528 19,969 Average ore grade: Copper (%) 0.36 0.36 0.35 0.35 0.45 0.39 0.40 Gold (g/t) 0.11 0.12 0.12 0.14 0.17 0.12 0.15 Silver (g/t) 1.79 2.02 1.78 1.81 2.21 1.87 2.03 Molybdenum (%) 0.020 0.019 0.020 0.029 0.031 0.020 0.030 Copper concentrates produced ('000 tonnes) 135 121 144 131 175 262 306 Average concentrate grade (% Cu) 23.9 22.0 21.6 21.0 23.3 24.7 22.3 Production of metals in copper concentrates: Copper ('000 tonnes) (a) 32.3 27.4 31.2 27.5 40.7 64.8 68.3 Gold ('000 ounces) 22.5 22.1 24.0 24.7 36.5 49.2 61.2 Silver ('000 ounces) 368 368 377 357 539 738 896 Molybdenum concentrates produced ('000 tonnes): 1.6 1.1 2.2 2.4 2.7 3.2 5.1 Molybdenum in concentrates ('000 tonnes) 0.6 0.5 0.8 1.0 1.1 1.3 2.2 Kennecott smelter & refinery 100 % Copper concentrates smelted ('000 tonnes) 227 156 187 163 123 398 286 Copper anodes produced ('000 tonnes) (b) 54.4 42.8 43.2 36.2 33.6 111.2 69.7 Production of refined metal: Copper ('000 tonnes) (c) 47.5 42.5 55.4 42.3 39.8 95.3 82.2 Gold ('000 ounces) (d) 39.7 25.7 43.1 34.0 32.1 75.0 66.0 Silver ('000 ounces) (d) 606 392 766 635 509 1,156 1,145 Sales of refined metal: Copper ('000 tonnes) (c) 50.8 42.3 52.1 40.7 41.7 98.1 82.4 Gold ('000 ounces) 41.7 28.3 33.2 33.6 30.8 77.1 64.5 Silver ('000 ounces) 637 396 611 625 500 1,189.1 1,125.3 (a) Includes a small amount of copper in precipitates. (b) New metal excluding recycled material. (c) We continue to process third party concentrate to optimise smelter utilisation, including 11.1 thousand tonnes of cathode produced from purchased concentrate in Q2 2025. Purchased and tolled copper concentrates are excluded from reported production figures and guidance. Sales of cathodes produced from purchased concentrate are included in reported revenues. (d) Includes gold and silver in intermediate products. Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 30

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 COPPER & GOLD (continued) Oyu Tolgoi mine 66 % Mongolia Ore Treated ('000 tonnes) - Open Pit 9,284 7,352 8,881 7,469 6,836 18,295 14,305 Ore Treated ('000 tonnes) - Underground 1,533 1,521 2,144 2,434 3,198 2,845 5,632 Ore Treated ('000 tonnes) - Total 10,817 8,873 11,025 9,903 10,034 21,140 19,937 Average mill head grades: Open Pit Copper (%) 0.37 0.39 0.43 0.42 0.47 0.38 0.44 Gold (g/t) 0.17 0.22 0.24 0.25 0.37 0.18 0.30 Silver (g/t) 1.12 0.97 1.08 1.02 1.07 1.18 1.04 Underground Copper (%) 2.02 2.05 1.96 2.03 2.13 1.86 2.09 Gold (g/t) 0.62 0.61 0.55 0.55 0.61 0.53 0.58 Silver (g/t) 4.75 4.76 4.59 4.47 4.75 4.07 4.63 Total Copper (%) 0.61 0.67 0.73 0.82 1.00 0.58 0.91 Gold (g/t) 0.24 0.28 0.30 0.32 0.44 0.23 0.38 Silver (g/t) 1.64 1.62 1.77 1.87 2.24 1.57 2.05 Copper concentrates produced ('000 tonnes) 246.2 232.0 307.3 303.4 381.6 454.7 684.9 Average concentrate grade (% Cu) 21.3 21.6 21.6 21.5 22.7 21.7 22.2 Production of metals in concentrates: Copper in concentrates ('000 tonnes) 52.5 50.0 66.3 65.2 86.8 98.6 152.0 Gold in concentrates ('000 ounces) 46.9 50.4 66.3 61.5 97.5 89.6 159.0 Silver in concentrates ('000 ounces) 363 325 426 403 550 673 952 Sales of metals in concentrates (a): Copper in concentrates ('000 tonnes) 48.3 43.6 62.6 57.7 86.4 92.0 144.0 Gold in concentrates ('000 ounces) 43.3 42.1 63.6 55.8 92.8 84.8 148.7 Silver in concentrates ('000 ounces) 317 273 382 338 514 588 852.4 (a) Sales of metals in concentrates refer to the payable metals in concentrates collected by customers from the Mongolia/China border. Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 DIAMONDS Diavik Diamonds 100 % Northwest Territories, Canada Ore processed ('000 tonnes) 361 232 330 394 511 705 905 Diamonds recovered ('000 carats) 702 542 775 942 1,238 1,441 2,179 Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 31

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 IRON ORE Rio Tinto Iron Ore Western Australia Pilbara Operations Saleable iron ore production ('000 tonnes) Hamersley mines (a) 54,691 57,096 59,656 49,637 57,422 108,064 107,059 Hope Downs 50 % 10,087 11,507 10,200 7,216 10,413 20,250 17,629 Robe River - Pannawonica (Mesas J and A) 53 % 7,898 7,252 8,583 6,676 7,471 15,907 14,148 Robe River - West Angelas 53 % 6,805 8,211 8,048 6,242 8,437 13,198 14,679 Total production ('000 tonnes) 79,481 84,066 86,486 69,771 83,743 157,420 153,514 Breakdown of total production: Pilbara Blend and SP10 Lump (b) 24,416 26,604 27,273 22,452 27,374 47,802 49,826 Pilbara Blend and SP10 Fines (b) 35,932 38,788 40,228 31,334 37,954 70,354 69,288 Robe Valley Lump 2,916 2,807 3,444 2,899 3,169 5,811 6,067 Robe Valley Fines 4,982 4,445 5,139 3,778 4,303 10,096 8,080 Yandicoogina Fines (HIY) 11,235 11,421 10,402 9,309 10,944 23,357 20,253 Breakdown of total shipments: Pilbara Blend Lump 15,832 17,498 16,223 11,997 12,967 31,467 24,964 Pilbara Blend Fines 31,336 31,870 29,042 22,434 25,849 59,811 48,283 Robe Valley Lump 2,522 2,200 2,846 2,187 2,614 4,830 4,800 Robe Valley Fines 5,839 4,839 5,764 4,211 4,977 11,392 9,188 Yandicoogina Fines (HIY) 11,364 11,794 10,585 9,350 10,636 23,592 19,986 SP10 Lump (b) 5,141 5,790 7,567 8,806 9,216 9,753 18,022 SP10 Fines (b) 8,275 10,559 13,650 11,755 13,629 17,496 25,385 Total shipments ('000 tonnes) (c) 80,309 84,550 85,678 70,740 79,887 158,342 150,627 Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 Iron Ore Company of Canada 59 % Newfoundland & Labrador and Quebec in Canada Saleable iron ore production: Concentrates ('000 tonnes) 1,584 1,434 1,809 1,614 2,008 3,508 3,622 Pellets ('000 tonnes) 2,137 2,169 2,503 2,331 2,229 4,663 4,560 IOC Total production ('000 tonnes) 3,721 3,603 4,312 3,945 4,237 8,171 8,182 Shipments: Concentrates ('000 tonnes) 1,678 2,090 1,942 1,100 2,173 3,657 3,273 Pellets ('000 tonnes) 2,449 1,971 2,310 2,308 2,353 4,991 4,662 IOC Total Shipments ('000 tonnes) (c) 4,127 4,061 4,252 3,408 4,526 8,647 7,935 Global Iron Ore Totals Iron Ore Production ('000 tonnes) 83,203 87,669 90,798 73,716 87,980 165,591 161,697 Iron Ore Shipments ('000 tonnes) 84,436 88,611 89,931 74,148 84,414 166,989 158,562 Iron Ore Sales ('000 tonnes) (d) 87,479 87,349 92,063 75,339 86,474 170,270 161,813 (a) Includes 100% of production from Paraburdoo, Mt Tom Price, Western Turner Syncline, Marandoo, Yandicoogina, Brockman, Nammuldi, Silvergrass, Channar, Gudai-Darri, Eastern Range and Western Range mines. Whilst Rio Tinto owns 54% of the Eastern Range and the Western Range mines, under the terms of the joint venture agreement, Hamersley Iron manages the operation and is obliged to purchase all mine production from the joint venture and therefore all of the production is included in Rio Tinto's share of production. (b) SP10 includes other lower grade products. (c) Shipments includes material shipped to our portside trading facility in China which may not be sold onwards in the same period. (d) Include Pilbara and IOC sales adjusted for portside trading movements and third party volumes sold. Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 32

Rio Tinto operational data Rio Tinto interest Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 H1 2024 H1 2025 Lithium production (‘000 tonnes) Lithium carbonate (a) (a) NA NA NA 15 14 NA 29 Lithium hydroxide 100 % NA NA NA 4 5 NA 10 Spodumene 100 % NA NA NA 34 0 NA 34 Other lithium specialities (LCE) 100 % NA NA NA 1 1 NA 3 Total lithium carbonate equivalent (LCE) production (b) NA NA NA 20 (c) 15 NA 35 Third party shipments (‘000 tonnes) Lithium carbonate (a) (a) NA NA NA 10 6 NA 16 Lithium hydroxide 100 % NA NA NA 3 5 NA 8 Spodumene 100 % NA NA NA 20 23 NA 42 Other lithium specialities (LCE) 100 % NA NA NA 0 1 NA 1 Total lithium carbonate equivalent shipments (‘000 LCE) NA NA NA 15 (c) 14 NA 29 (a) Lithium carbonate quantities reflect our 100% share of Olaroz shipments, of which Rio Tinto's ownership is 66.5%. (b) The lithium value chain is vertically integrated and as a result production volumes are not additive. Lithium Carbonate Equivalent (LCE) is derived from volumes of lithium carbonate, lithium chloride, and spodumene concentrate. These compounds are used as feedstock in downstream production. (c) Full first quarter lithium carbonate equivalent production from Arcadium was 17kt (20kt on a 100% basis) of which 6kt was produced since completion of the acquisition in March (7kt on a 100% basis). Full first quarter lithium carbonate equivalent shipments from Arcadium was 12kt (15kt on a 100% basis) of which 4kt was shipped since completion of the acquisition in March (5kt on a 100% basis). SALT Dampier Salt (a) 68 % Western Australia Salt production ('000 tonnes) 2,253 2,211 1,970 1,223 2,012 4,337 3,235 (a) In December 2024, we completed the sale of Dampier Salt Limited’s Lake MacLeod operation to Leichhardt Industrial Group. Following this divestment, we continue to operate solar salt sites at Dampier and Port Hedland. TITANIUM DIOXIDE SLAG Rio Tinto Iron & Titanium 100 % Canada and South Africa (Rio Tinto share) (a) Titanium dioxide slag ('000 tonnes) 238 263 235 223 269 492 491 (a) Quantities comprise 100% of Rio Tinto Fer et Titane and Rio Tinto's 74% interest in Richards Bay Minerals' production. Ilmenite mined in Madagascar is being processed in Canada. Rio Tinto percentage interest shown above is at 30 June 2025. The data represents production and sales on a 100% basis unless otherwise stated. Rio Tinto | Second quarter operations review 33