|  |  |  |
|--|--|--|
|  |

|  |  |  |
|--|--|--|
|  |

----

|  |                                                                                                                                              |  |  |  |  |  |  |  |
|--|----------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|--|
|  | SIX MONTHS ENDED twelve months ended December 31, 2023For Immediate ReleaseSQM REPORTS EARNINGS FOR THETWELVE MONTHS ENDED DECEMBER 31, 2023 |  |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|
| Highlights•SQM reported net income(1) for the twelve months ended December 31, 2023 of US$2,012.7 million compared to US$3,906.3 million for the same period last year. Earnings per share totaled US$7.05 for the twelve months ended December 31, 2023.•Revenues for the  twelve months ended December 31, 2023, reached US$7,467.5 million compared to US$10,710.6 million reported for the same period last year.•Lithium sales volumes reached new record with over 170,000 metric tons sold in 2023; first production of spodumene concentrate commenced at Mt. Holland during the fourth quarter of 2023. |
| SQM will hold a conference call to discuss these results on Thursday, February 29, 2024 at 10:00am ET (12:00pm Chile time).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Participant Dial-In (Toll Free): 1-844-282-4852                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Participant International Dial-In: 1-412-317-5626                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Webcast: https://event.choruscall.com/mediaframe/webcast.html?webcastid=R77ofIWz                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 1 |

----

|                                  |  |        |  |         |  |         |  |               |  |    |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|----------------------------------|--|--------|--|---------|--|---------|--|---------------|--|----|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                  |  |        |  | 12M2023 |  | 12M2022 |  | 2023/2022 |
| Lithium and Derivatives          |  | Th. MT |  | 170.0   |  | 156.8   |  | 13.2          |  | 8% |
| Lithium and Derivatives Revenues |  | MUS$   |  | 5,180.1 |  | 8,152.9 |  | (2,972.8)     |  |    | (36) | % |

|                                  |  |        |  |        |  |         |  |               |  |     |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|----------------------------------|--|--------|--|--------|--|---------|--|---------------|--|-----|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                  |  |        |  | 4Q2023 |  | 4Q2022  |  | 2023/2022 |
| Lithium and Derivatives          |  | Th. MT |  | 51.3   |  | 43.0    |  | 8.3           |  | 19% |
| Lithium and Derivatives Revenues |  | MUS$   |  | 791.4  |  | 2,525.1 |  | (1,733.7)     |  |     | (69) | % |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 2 |

----

|                                                |  |        |  |         |  |         |  |               |  |          |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|------------------------------------------------|--|--------|--|---------|--|---------|--|---------------|--|----------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                                |  |        |  | 12M2023 |  | 12M2022 |  | 2023/2022 |
| Specialty Plant Nutrition Total Volumes        |  | Th. MT |  | 840.2   |  | 847.8   |  | (7.6)         |  | (1)      | %    |
| Sodium Nitrate                                 |  | Th. MT |  | 16.7    |  | 14.4    |  | 2.3           |  | 16%      |
| Potassium Nitrate and Sodium Potassium Nitrate |  | Th. MT |  | 443.5   |  | 477.4   |  | (33.8)        |  | (7)      | %    |
| Specialty Blends                               |  | Th. MT |  | 243.4   |  | 217.9   |  | 25.6          |  | 12  | %    |
| Other specialty plant nutrients (*)            |  | Th. MT |  | 136.5   |  | 138.1   |  | (1.6)         |  | (1)%     |
| Specialty Plant Nutrition Revenues             |  | MUS$   |  | 913.9   |  | 1,172.3 |  | (258.4)       |  |          | (22) | % |

|                                                |  |        |  |        |  |        |  |               |  |          |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|------------------------------------------------|--|--------|--|--------|--|--------|--|---------------|--|----------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                                |  |        |  | 4Q2023 |  | 4Q2022 |  | 2023/2022 |
| Specialty Plant Nutrition Total Volumes        |  | Th. MT |  | 226.0  |  | 199.2  |  | 26.8          |  | 13  | %    |
| Sodium Nitrate                                 |  | Th. MT |  | 1.2    |  | 1.6    |  | (0.3)         |  | (21)     | %    |
| Potassium Nitrate and Sodium Potassium Nitrate |  | Th. MT |  | 127.0  |  | 106.3  |  | 20.7          |  | 20  | %    |
| Specialty Blends                               |  | Th. MT |  | 62.3   |  | 50.3   |  | 12.0          |  | 24%      |
| Other specialty plant nutrients (*)            |  | Th. MT |  | 35.4   |  | 41.0   |  | (5.6)         |  | (14)%    |
| Specialty Plant Nutrition Revenues             |  | MUS$   |  | 223.7  |  | 274.2  |  | (50.5)        |  |          | (18) | % |

|                                 |  |        |  |         |  |         |  |               |  |     |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|---------------------------------|--|--------|--|---------|--|---------|--|---------------|--|-----|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                 |  |        |  | 12M2023 |  | 12M2022 |  | 2023/2022 |
| Iodine and Derivatives          |  | Th. MT |  | 13.1    |  | 12.7    |  | 0.3           |  | 3%  |
| Iodine and Derivatives Revenues |  | MUS$   |  | 892.2   |  | 754.3   |  | 137.8         |  | 18% |

|                                 |  |        |  |        |  |        |  |               |  |    |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|---------------------------------|--|--------|--|--------|--|--------|--|---------------|--|----|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                 |  |        |  | 4Q2023 |  | 4Q2022 |  | 2023/2022 |
| Iodine and Derivatives          |  | Th. MT |  | 3.3    |  | 3.1    |  | 0.2           |  | 6% |
| Iodine and Derivatives Revenues |  | MUS$   |  | 218.1  |  | 212.6  |  | 5.6           |  | 3% |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 3 |

----

|                    |  |        |  |         |  |         |  |               |  |          |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|--------------------|--|--------|--|---------|--|---------|--|---------------|--|----------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                    |  |        |  | 12M2023 |  | 12M2022 |  | 2023/2022 |
| Potassium          |  | Th. MT |  | 543.1   |  | 480.5   |  | 62.5          |  | 13  | %    |
| Potassium Revenues |  | MUS$   |  | 279.1   |  | 437.2   |  | (158.1)       |  |          | (36) | % |

|                    |  |        |  |        |  |        |  |               |  |          |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|--------------------|--|--------|--|--------|--|--------|--|---------------|--|----------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                    |  |        |  | 4Q2023 |  | 4Q2022 |  | 2023/2022 |
| Potassium          |  | Th. MT |  | 112.5  |  | 98.6   |  | 14.0          |  | 14  | % |
| Potassium Revenues |  | MUS$   |  | 50.8   |  | 80.5   |  | -29.7         |  | (37)     | % |

|                               |  |        |  |         |  |         |  |               |  |     |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|-------------------------------|--|--------|--|---------|--|---------|--|---------------|--|-----|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                               |  |        |  | 12M2023 |  | 12M2022 |  | 2023/2022 |
| Industrial Nitrates           |  | Th. MT |  | 180.4   |  | 147.0   |  | 33.5          |  | 23% |
| Industrial Chemicals Revenues |  | MUS$   |  | 175.2   |  | 165.2   |  | 10.0          |  | 6%  |

|                               |  |        |  |        |  |        |  |               |  |      |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|-------------------------------|--|--------|--|--------|--|--------|--|---------------|--|------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                               |  |        |  | 4Q2023 |  | 4Q2022 |  | 2023/2022 |
| Industrial Nitrates           |  | Th. MT |  | 12.4   |  | 27.5   |  | (15.1)        |  | (55) | %    |
| Industrial Chemicals Revenues |  | MUS$   |  | 18.8   |  | 34.0   |  | (15.2)        |  |      | (45) | % |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 4 |

----

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 5 |

----

|                                                                                            |                     |  |      |                                          |  |      |  |               |  |  |               |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|--------------------------------------------------------------------------------------------|---------------------|--|------|------------------------------------------|--|------|--|---------------|--|--|---------------|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                                                                            | For the 4th quarter |  |      | For the twelve months ended December 31, |
| (US$ millions)                                                                             | 2023                |  | 2022 |                                          |  | 2023 |  | 2022          |
|                                                                                            |                     |  |      |                                          |  |      |  |               |
| Profit for the Period                                                                      | 205.9          |  |      | 1,152.5                             |  |      |  | 2,019.7  |  |  | 3,914.3  |  |
| (+) Depreciation and amortization expenses                                                 | 75.9           |  |      | 65.6                                |  |      |  | 280.8    |  |  | 244.5    |  |
| (+) Finance costs                                                                          | 48.8           |  |      | 21.2                                |  |      |  | 138.4    |  |  | 86.7     |  |
| (+) Income tax expense                                                                     | 68.0           |  |      | 452.6                               |  |      |  | 787.3    |  |  | 1,572.2  |  |
| EBITDA                                                                                     | 398.5          |  |      | 1,692.1                             |  |      |  | 3,226.2  |  |  | 5,817.6  |  |
| (-) Other income                                                                           | 4.1            |  |      | 2.3                                 |  |      |  | 40.6     |  |  | 9.9      |  |
| (-) Other gains (losses)                                                                   | (2.5)               |  |      | 0.5                                 |  |      |  | (2.3)         |  |  | 0.1      |  |
| (-) Share of Profit of associates and joint ventures accounted for using the equity method | 1.5            |  |      | 2.7                                 |  |      |  | 0.6      |  |  | 20.2     |  |
| (+) Other Expenses                                                                         | (65.6)              |  |      | (19.7)                                   |  |      |  | (93.4)        |  |  | (76.0)        |  |
| (+) Impairment of financial assets and reversal of impairment losses                       | 2.4            |  |      | 9.1                                 |  |      |  | 0.2      |  |  | 3.4      |  |
| (-) Finance income                                                                         | 37.0           |  |      | 29.1                                |  |      |  | 122.7    |  |  | 47.0     |  |
| (-) Foreign currency translation differences                                               | (6.1)               |  |      | 0.9                                 |  |      |  | (22.3)        |  |  | (25.4)        |  |
| Adjusted EBITDA                                                                            | 427.6          |  |      | 1,667.2                             |  |      |  | 3,180.1  |  |  | 5,838.4  |  |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 6 |

----

|                                                     |                |  |                |  |  |  |  |  |  |  |  |
|-----------------------------------------------------|----------------|--|----------------|--|--|--|--|--|--|--|--|
|                                                     | As of Dec. 31, |  | As of Dec. 31, |
| (US$ millions)                                      | 2023           |  | 2022           |
|                                                     |                |  |                |
| Total Current Assets                                | 5,866.1        |  | 6,991.5        |
| Cash and cash equivalents                           | 1,041.4        |  | 2,655.2        |
| Other current financial assets                      | 1,325.8        |  | 961.4          |
| Accounts receivable (1)                             | 950.4          |  | 1,169.0        |
| Inventory                                           | 1,774.6        |  | 1,784.3        |
| Others                                              | 773.9          |  | 421.6          |
|                                                     |                |  |                |
| Total Non-current Assets                            | 5,839.4        |  | 3,827.6        |
| Other non-current financial assets                  | 248.3          |  | 32.1           |
| Investments in related companies                    | 86.4           |  | 54.4           |
| Property, plant and equipment                       | 3,609.9        |  | 2,726.8        |
| Other Non-current Assets                            | 1,894.8        |  | 1,014.2        |
|                                                     |                |  |                |
| Total Assets                                        | 11,705.6       |  | 10,819.1       |
|                                                     |                |  |                |
| Total Current Liabilities                           | 2,351.1        |  | 3,051.5        |
| Short-term debt                                     | 1,256.5        |  | 523.0          |
| Others                                              | 1,094.6        |  | 2,528.5        |
|                                                     |                |  |                |
| Total Long-Term Liabilities                         | 3,787.5        |  | 2,835.6        |
| Long-term debt                                      | 3,213.4        |  | 2,394.2        |
| Others                                              | 574.1          |  | 441.3          |
|                                                     |                |  |                |
| Shareholders’ Equity before Minority Interest | 5,530.7        |  | 4,896.6        |
|                                                     |                |  |                |
| Minority Interest                                   | 36.2           |  | 35.4           |
|                                                     |                |  |                |
| Total Shareholders’ Equity                    | 5,566.9        |  | 4,932.0        |
|                                                     |                |  |                |
| Total Liabilities & Shareholders’ Equity  | 11,705.6       |  | 10,819.1       |
|                                                     |                |  |                |
| Liquidity (2)                                       | 2.5            |  | 2.3            |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 7 |

----

|                                     |                     |  |                                      |           |         |        |           |        |        |           |  |  |  |  |  |  |  |  |  |  |  |  |  |
|-------------------------------------|---------------------|--|--------------------------------------|-----------|---------|--------|-----------|--------|--------|-----------|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                     | For the 4th quarter |  | For the twelve months ended Dec. 31, |
| (US$ millions)                      | 2023                |  | 2022                                 |           | 2023    |        | 2022      |
|                                     |                     |  |                                      |           |         |        |           |
| Revenues                            | 1,311.6             |  | 3,133.6                              |           | 7,467.5 |        | 10,710.6  |
|                                     |                     |  |                                      |           |         |        |           |
| Lithium and Lithium Derivatives     | 791.4               |  | 2,525.1                              |           | 5,180.1 |        | 8,152.9   |
| Specialty Plant Nutrition (1)       | 223.7               |  | 274.2                                |           | 913.9   |        | 1,172.3   |
| Iodine and Iodine Derivatives       | 218.1               |  | 212.6                                |           | 892.2   |        | 754.3     |
| Potassium                           | 50.8                |  | 80.5                                 |           | 279.1   |        | 437.2     |
| Industrial Chemicals                | 18.8                |  | 34.0                                 |           | 175.2   |        | 165.2     |
| Other Income                        | 8.7                 |  | 7.2                                  |           | 27.0    |        | 28.6      |
|                                     |                     |  |                                      |           |         |        |           |
| Cost of Sales                       | (835.0)             |  |                                      | (1,426.1) |         |        | (4,111.6) |        |        | (4,729.5) |  |
| Depreciation and Amortization       | (75.9)              |  |                                      | (65.6)    |         |        | (280.8)   |        |        | (244.5)   |  |
|                                     |                     |  |                                      |           |         |        |           |
| Gross Profit                        | 400.7               |  | 1,641.9                              |           | 3,075.1 |        | 5,736.6   |
|                                     |                     |  |                                      |           |         |        |           |
| Administrative Expenses             | (49.0)              |  |                                      | (40.3)    |         |        | (175.8)   |        |        | (142.6)   |  |
| Financial Expenses                  | (48.8)              |  |                                      | (21.2)    |         |        | (138.4)   |        |        | (86.7)    |  |
| Financial Income                    | 37.0                |  | 29.1                                 |           | 122.7   |        | 47.0      |
| Exchange Difference                 | (6.1)               |  |                                      | 0.9  |         |        | (22.3)    |        | (25.4) |           |
| Other                               | (60.1)              |  | (5.2)                                |           |         | (54.3) |           | (42.5) |        |
|                                     |                     |  |                                      |           |         |        |           |
| Income Before Taxes                 | 273.8               |  | 1,605.2                              |           | 2,807.0 |        | 5,486.5   |
|                                     |                     |  |                                      |           |         |        |           |
| Income Tax                          | (68.0)              |  |                                      | (452.6)   |         |        | (787.3)   |        |        | (1,572.2) |  |
|                                     |                     |  |                                      |           |         |        |           |
| Net Income before minority interest | 205.9               |  | 1,152.5                              |           | 2,019.7 |        | 3,914.3   |
|                                     |                     |  |                                      |           |         |        |           |
| Minority Interest                   | (2.7)               |  |                                      | (1.5)     |         |        | (7.1)     |        |        | (8.0)     |  |
|                                     |                     |  |                                      |           |         |        |           |
| Net Income                          | 203.2               |  | 1,151.0                              |           | 2,012.7 |        | 3,906.3   |
| Net Income per Share (US$)          | 0.71                |  | 4.03                                 |           | 7.05    |        | 13.68     |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 8 |

----

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 9 |

----

|                             |                                           |  |  |  |  |
|-----------------------------|-------------------------------------------|--|--|--|--|
|                             | CHEMICAL AND MINING COMPANY OF CHILE INC. |
|                             | (Registrant)                              |
| Date: February 28, 2024 | /s/ Gerardo Illanes               |
|                             | By: Gerardo Illanes                   |
|                             | CFO                                       |

|                                  |    |  |  |  |  |
|----------------------------------|----|--|--|--|--|
| SQM S.A. 4Q2023 Earnings release | 10 |