#1Solutions SQM for human progress 3Q2023 RESULTS PRESENTATION November 2023 100 % 0 % 1929 10 0#2This presentation release contains "forward-looking statements" within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking statements can be identified by words such as: Customary note regarding "anticipate,” “plan,” “believe,” “estimate," "expect," "strategy," "should," "will" and similar references to future periods. forward-looking statements Examples of forward-looking statements include, among others, statements we make concerning the Company's capital expenditures, financing sources, Sustainable Development Plan, Salar Futuro project, business outlook, future economic performance, anticipated profitability, revenues, expenses, or other financial items, anticipated cost synergies and product or service line growth. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are estimates that reflect the best judgment of SQM management based on currently available information. Because forward-looking statements relate to the future, they involve a number of risks, uncertainties and other factors that are outside of our control and could cause actual results to differ materially from those stated in such statements, including our ability to successfully implement the Sustainable Development Plan. Therefore, you should not rely on any of these forward-looking statements. Readers are referred to the documents filed by SQM with the United States Securities and Exchange Commission, specifically other important risk factors that could cause actual results to differ from those contained in the forward-looking statements. All forward-looking statements are based on information available to SQM on the date hereof and SQM assumes no obligation to update such statements, whether as a result of new information, future developments or otherwise, except as required by law. SQM Corporate Presentation 2#3Summary of Third Quarter 2023 Results Revenue Gross Profit Net Income Adjusted EBITDA Adjusted EBITDA Margin 43% US$1,840m US$754m US$479m US$788m % Change % Change % Change % Change % Change Q-on-Q Q-on-Q Y-on-Y (10)% (38)% Q-on-Q (12)% Q-on-Q Y-on-Y (54)% Y-on-Y (17)% (56)% (10)% Q-on-Q (11)% Y-on-Y (53)% Y-on-Y (24)% Trend Trend Trend Trend Trend 2,958 Revenues Contribution per Business Line US$ million (1,057) (71) 1,633 Earnings per Share 15 1,840 US$1.68 (2) (2) (1) Lithium lodine Industrial Chemicals 3Q2023 3Q2022 SPN Potassium Others SQM Corporate Presentation 3Q2022 Gross Profit Contribution per Business Line US$ million 754 (781) (51) (18) (25) (1) (2) Lithium SPN lodine Potassium Industrial Chemicals 3Q2023 Others 3#4Results Key Drivers 3Q2023 vs 3Q2022 Lithium: Higher sales volumes (4%), significantly lower year-on-year average sales prices (-47%) lodine: Higher average sales prices (6%) partially offset by lower (-6%) sales volumes SPN: Higher sales volumes (8%), lower year-on-year average sales prices (-30%) Potassium: Significantly higher sales volumes (169%) and lower average sales prices (-54%) Industrial Chemicals: Lower average sales prices (-2%) and lower sales volumes (-2%) SQM Corporate Presentation SQM 4#5Lithium and Derivatives: Long-Term Fundamentals Support Demand Growth LITHIUM AND DERIVATIVES SQM LTM¹ Gross Profit: US$3.4B LTM¹ Revenues: US$6.9B 93% 5% 2% Europe North America Asia and others ~20% Market Share² $15 $8 Quarterly Sales Volumes (KMT) $38 & Average Price (US$/kg) $56 $54 $59 $51 $34 $30 22 31 38 34 42 43 32 43 43 3Q2021 4Q2021 1Q2022 2Q2022 3Q2022 4Q2022 1Q2023 2Q2023 3Q2023 Sales Volumes -Avg Price Global Lithium Chemical Market Estimated annual global EV sales growth ~35% in 2023. We expect the global lithium market demand to grow ~ 20% in 2023. SQM Lithium Slightly higher sales volumes in 3Q23, offset by lower sales prices. Our sales volumes could be lower in 4Q23 vs 3Q23. Majority of sales contracts are linked to price indices which follow market price trends. SQM Corporate Presentation 1 Last twelve months ended September 30, 2023. 2 Market share as of December 31, 2022. Market share percentages have been developed by us using internal and external sources and reflect our best current estimates, which have not been confirmed by independent sources. 5#6Lithium and Derivatives: Fully integrated lithium producer from natural resource to chemical refining with full traceability Chile Antofagasta / Carmen Lithium Plant Chile: lithium sulfate production to feed lithium hydroxide refining capacity in China. Chile: capacity expansions: lithium carbonate to 210,000 MT lithium hydroxide to 100,000 MT Australia Salar de Atacama Kwinana Refinery Mt. Holland Mine and Concentrator China Australia: Mt. Holland lithium hydroxide project of 50,000 MT (50/50 JV), remaining capex ~US$450m (SQM's share) Australia: Exploration projects portfolio China: SQM's lithium hydroxide refinery + tolling from lithium sulfate, 30,000 MT, capex ~US$140m SQM Corporate Presentation Total capex 2023-2025: US$2.2 billion, including maintenance Sichuan Lithium Chemical plant SQM 6#7lodine and Derivatives: Capturing Segment Growth in High Price Environment IODINE AND DERIVATIVES Quarterly Sales Volumes (KMT) & Average Price LTM¹ Gross Profit US$551M LTM¹ Revenues: US$887M 3% $55 $50 (US$/kg) $70 $69 $69 $68 $64 SQM Global Iodine Market Flat to negative global market growth in 2023, with contrast media segment growing close to 7%. Market remains tight with high prices and limited supply. 43% 15% 40% I Latam & Caribean ■Europe ■North America ■Asia and others ~33% Market Share² SQM Corporate Presentation $39 $35 3.1 2.8 3.0 3.2 3.4 3.1 3.4 3.2 3.2 3Q2021 4Q2021 1Q2022 2Q2022 3Q2022 4Q2022 1Q2023 2Q2023 3Q2023 Volumes 1 Last twelve months ended September 30, 2023. -O-Avg. Price 2 Market share as of December 31, 2022. Market share percentages have been developed by us using internal and external sources and reflect our best current estimates, which have not been confirmed by independent sources. SQM lodine & Derivatives Higher sales volumes are expected in 2023 vs 2022 with higher average price when compared to 2022. Slightly lower prices in 4Q23 vs 3Q23 due to impact from the high-price environment on some of the more price-sensitive applications. Continue to work on iodine capacity expansions, incremental ~800 metric tons in 2023. 7#8Nitrates and lodine Operations: SQM to maintain leading position in nitrates and iodine industries TARAPACÁ REGION Pampa Orcoma Nueva Victoria Tocopilla Pedro de Valdivia Coya Sur ANTOFAGASTA REGION Salar de Atacama Pampa Blanca SQM Corporate Presentation lodine and Nitrates Projects, total capex 2023-2025: ~US1.2 billion, including maintenance: Pampa Blanca, additional 1,300 MT of iodine and 100,000 MT of nitrates salts Nueva Victoria, up to 900 l/s seawater supply project and yield improvement initiatives Greenfield projects, additional 2,500 MT of iodine and 250,000 MT of nitrates salts, using seawater 00#9Specialty Plant Nutrition: Demand and Sales Volumes Recovery SPECIALTY PLANTS NUTRITION LTM¹ Gross Profit US$264M LTM¹ Revenues: US$964M 11% 19% 8% 46% 15% ■Chile E Latam & Caribean ■Europe North America Asia and others ~45% Market Share² SQM Corporate Presentation SPN Quarterly Sales Volumes (KMT) & Average Price (US$/MT) $1,440 $1,410 $1,380 $1,310 $1,310 $1,120 $990 $940 $780 293 285 211 230 208 199 168 222 224 3Q2021 4Q2021 1Q2022 2Q2022 3Q2022 4Q2022 1Q2023 2Q2023 3Q2023 I Sales Volumes Avg. Price Global KNO3 Market The demand recovery seen during 3Q23 could continue into 2024. SQM KNO3 2023 Similar sales volumes are expected in the SPN business line in 4Q23 vs 3Q23. 1 Last twelve months ended September 30, 2023. 2 Market share in the agricultural potassium nitrate market as of December 31, 2022. Market share percentages have been developed by us using internal and external sources and reflect our best current estimates, which have not been confirmed by independent sources. 9#10Potassium: Prices Decline and Sales Volumes Improve POTASSIUM LTM¹ Gross Profit US$94M LTM¹ Revenues: US$309M 27% 9% 23% Chile Europe Asia and others 12% 28% E Latam & Caribean North America ~1% Market Share² $440 Potassium Quarterly Sales Volumes (kMT) & Average Price (US$/MT) $805 $685 $1,030 $960 $820 $630 $530 $450 202 305 142 178 63 99 138 124 169 3Q2021 4Q2021 1Q2022 2Q2022 3Q2022 4Q2022 1Q2023 2Q2023 3Q2023 Sales Volumes -O-Avg. Price SQM Corporate Presentation 1 Last twelve months ended September 30, 2023. 2 Market share as of December 31, 2022. Market share percentages have been developed by us using internal and external sources and reflect our best current estimates, which have not been confirmed by independent sources. Global Potash Market Potassium market demand could increase by ~10M tons in 2023 vs 2022. SQM Potassium 2023 Potassium sales volumes are expected to surpass 500,000 metric tons in 2023. 10#11Industrial Chemicals: Stable Outlook and New Opportunities INDUSTRIAL CHEMICALS LTM¹ Gross Profit US$35M LTM¹ Revenues: US$190M 6% 1% 12% 56% 25% Industrial Chemicals Quarterly Sales Volumes (KMT) & Average Price (US$/MT) $1,595 $1,115 $910 $1,235 $970 $930 $890 Global Industrial Chemicals Market Industrial potassium nitrate market prices should follow the trends seen in the agricultural sector. $815 $740 SQM 2023 We completed solar salts delivery for the CPS project in the Middle East with ~105,000 metric tons of solar salts delivered in 2023. ■Chile Europe Asia and others 50 51 17 53 50 28 71 49 49 3Q2021 4Q2021 1Q2022 2Q2022 3Q2022 4Q2022 1Q2023 2Q2023 3Q2023 L Latam & Caribean Sales Volumes -O-Avg. Price North America ~60% Market Share² SQM Corporate Presentation 1 Last twelve months ended September 30, 2023. 2 Market share in the industrial potassium nitrate market as of December 31, 2022. Market share percentages have been developed by us using internal and external sources and reflect our best current estimates, which have not been confirmed by independent sources. 11#12Agreement with CORFO Payments¹ Li₂CO3 LiOH KCL US$/MT %² US$/MT %2 US$/MT %2 Production Allowance < 4,000 6.8 <5,000 6.8 <300 3.0 4,000-5,000 8.0 5,000-6,000 8.0 300-400 7.0 5,000-6,000 10.0 6,000 - 7,000 10.0 400-500 10.0 Total production quota 2018-2030: 349,553 MT of LME or ~2.2 million metric tons of LCE 6,000 - 7,000 17.0 7,000-10,000 17.0 500-600 15.0 7,000-10,000 25.0 10,000-12,000 25.0 >600 20.0 > 10,000 40.0 > 12,000 40.0 Example Lithium Average Price, US$/MT Total Lease Fee Paid $20,000 $30,000 $40,000 % US$/MT % US$/MT % US$/MT Contribution to the Development & Communities Annual contribution of US$11-19 million for R&D efforts Li₂CO3 LiOH 26.9% $5,372 31.2% $9,372 33.4% $13,372 • 23.7% $4,730 29.1% $8,730 31.8% $12,730 Annual contribution of US$10-15 million to neighboring communities of the Salar de Atacama Potassium Price, US$/MT $600 $500 $400 • Annual contribution of 1.7% of SQM Salar's sales per year to regional development Total Lease Fee Paid % US$/MT % US$/MT % US$/MT KCL 6.8% $41 5.2% $26 4.0% $16 SQM Corporate Presentation Total contribution to the Chilean treasury for the nine months ended September 30, 2023, reached US$2.4 billion. 12#13Solutions SQM for human progress Contact information Gerardo Illanes CFO [email protected] Irina Axenova Head of Investor Relations [email protected] Isabel Bendeck Investor Relations [email protected]