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

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

----

|  |                                                                                                                                            |  |  |  |  |  |  |  |
|--|--------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|--|
|  | SIX MONTHS ENDED nine months ended September 30, 2023For Immediate ReleaseSQM REPORTS EARNINGS FOR THENINE MONTHS ENDED SEPTEMBER 30, 2023 |  |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|
| Highlights•SQM reported net income(1) for the nine months ended September 30, 2023 of US$1,809.5 million compared to US$2,755.3 million for the same period last year. Earnings per share totaled US$6.33 for the nine months ended September 30, 2023.•Revenues for the nine months ended September 30, 2023, reached US$6,155.9 million compared to US$7,577.0 million reported for the same period last year.•SQM received IRMA 75, the highest score to date, for its lithium mining operation in the Salar de Atacama. •Total contribution to the Chilean treasury amounted to approximately US$2.4 billion for the nine months ended September 30, 2023. |
| SQM will hold a conference call to discuss these results on Thursday, November 16, 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=o4InH7e7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 1 |

----

|                                  |  |        |  |         |  |         |  |               |  |    |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|----------------------------------|--|--------|--|---------|--|---------|--|---------------|--|----|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                  |  |        |  | 9M2023  |  | 9M2022  |  | 2023/2022 |
| Lithium and Derivatives          |  | Th. MT |  | 118.7   |  | 113.8   |  | 4.9           |  | 4% |
| Lithium and Derivatives Revenues |  | MUS$   |  | 4,388.7 |  | 5,627.8 |  | (1,239.2)     |  |    | (22) | % |

|                                  |  |        |  |         |  |         |  |               |  |    |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|----------------------------------|--|--------|--|---------|--|---------|--|---------------|--|----|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                  |  |        |  | 3Q2023  |  | 3Q2022  |  | 2023/2022 |
| Lithium and Derivatives          |  | Th. MT |  | 43.3    |  | 41.6    |  | 1.7           |  | 4% |
| Lithium and Derivatives Revenues |  | MUS$   |  | 1,277.9 |  | 2,334.9 |  | (1,057.0)     |  |    | (45) | % |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 2 |

----

|                                                |  |        |  |        |  |        |  |               |  |         |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|------------------------------------------------|--|--------|--|--------|--|--------|--|---------------|--|---------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                                |  |        |  | 9M2023 |  | 9M2022 |  | 2023/2022 |
| Specialty Plant Nutrition Total Volumes        |  | Th. MT |  | 614.3  |  | 648.6  |  | (34.4)        |  | (5)     | %    |
| Sodium Nitrate                                 |  | Th. MT |  | 15.5   |  | 12.9   |  | 2.6           |  | 21%     |
| Potassium Nitrate and Sodium Potassium Nitrate |  | Th. MT |  | 316.5  |  | 371.1  |  | (54.6)        |  | (15)    | %    |
| Specialty Blends                               |  | Th. MT |  | 181.2  |  | 167.6  |  | 13.6          |  | 8  | %    |
| Other specialty plant nutrients (*)            |  | Th. MT |  | 101.1  |  | 97.1   |  | 4.0           |  | 4%      |
| Specialty Plant Nutrition Revenues             |  | MUS$   |  | 690.2  |  | 898.1  |  | (208.0)       |  |         | (23) | % |

|                                                |  |        |  |        |  |        |  |               |  |         |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|------------------------------------------------|--|--------|--|--------|--|--------|--|---------------|--|---------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                                |  |        |  | 3Q2023 |  | 3Q2022 |  | 2023/2022 |
| Specialty Plant Nutrition Total Volumes        |  | Th. MT |  | 224.4  |  | 207.9  |  | 16.5          |  | 8  | %    |
| Sodium Nitrate                                 |  | Th. MT |  | 6.7    |  | 6.4    |  | 0.3           |  | 4  | %    |
| Potassium Nitrate and Sodium Potassium Nitrate |  | Th. MT |  | 104.1  |  | 108.5  |  | (4.4)         |  | (4)     | %    |
| Specialty Blends                               |  | Th. MT |  | 81.8   |  | 62.3   |  | 19.5          |  | 31%     |
| Other specialty plant nutrients (*)            |  | Th. MT |  | 31.8   |  | 30.6   |  | 1.2           |  | 4%      |
| Specialty Plant Nutrition Revenues             |  | MUS$   |  | 221.7  |  | 292.5  |  | (70.8)        |  |         | (24) | % |

|                                 |  |        |  |        |  |        |  |               |  |     |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|---------------------------------|--|--------|--|--------|--|--------|--|---------------|--|-----|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                 |  |        |  | 9M2023 |  | 9M2022 |  | 2023/2022 |
| Iodine and Derivatives          |  | Th. MT |  | 9.8    |  | 9.6    |  | 0.2           |  | 2%  |
| Iodine and Derivatives Revenues |  | MUS$   |  | 674.0  |  | 541.8  |  | 132.2         |  | 24% |

|                                 |  |        |  |        |  |        |  |               |  |      |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|---------------------------------|--|--------|--|--------|--|--------|--|---------------|--|------|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                 |  |        |  | 3Q2023 |  | 3Q2022 |  | 2023/2022 |
| Iodine and Derivatives          |  | Th. MT |  | 3.2    |  | 3.4    |  | (0.2)         |  | (6)% |
| Iodine and Derivatives Revenues |  | MUS$   |  | 213.0  |  | 215.1  |  | (2.1)         |  | (1)% |

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

----

|                    |  |        |  |        |  |        |  |               |  |          |      |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|--------------------|--|--------|--|--------|--|--------|--|---------------|--|----------|------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                    |  |        |  | 9M2023 |  | 9M2022 |  | 2023/2022 |
| Potassium          |  | Th. MT |  | 430.5  |  | 382.0  |  | 48.5          |  | 13  | %    |
| Potassium Revenues |  | MUS$   |  | 228.2  |  | 356.7  |  | (128.4)       |  |          | (36) | % |

|                    |  |        |  |        |  |        |  |               |  |           |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|--------------------|--|--------|--|--------|--|--------|--|---------------|--|-----------|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                    |  |        |  | 3Q2023 |  | 3Q2022 |  | 2023/2022 |
| Potassium          |  | Th. MT |  | 168.7  |  | 62.7   |  | 106.1         |  | 169  | % |
| Potassium Revenues |  | MUS$   |  | 75.2   |  | 60.2   |  | 15.0          |  | 25   | % |

|                               |  |        |  |        |  |        |  |               |  |     |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|-------------------------------|--|--------|--|--------|--|--------|--|---------------|--|-----|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                               |  |        |  | 9M2023 |  | 9M2022 |  | 2023/2022 |
| Industrial Nitrates           |  | Th. MT |  | 168.1  |  | 119.5  |  | 48.6          |  | 41% |
| Industrial Chemicals Revenues |  | MUS$   |  | 156.4  |  | 131.2  |  | 25.2          |  | 19% |

|                               |  |        |  |        |  |        |  |               |  |     |     |   |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|-------------------------------|--|--------|--|--------|--|--------|--|---------------|--|-----|-----|---|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                               |  |        |  | 3Q2023 |  | 3Q2022 |  | 2023/2022 |
| Industrial Nitrates           |  | Th. MT |  | 48.5   |  | 49.6   |  | (1.1)         |  | (2) | %   |
| Industrial Chemicals Revenues |  | MUS$   |  | 43.4   |  | 45.2   |  | (1.8)         |  |     | (4) | % |

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

----

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 5 |

----

|                                                                                            |                     |  |      |                                         |  |      |  |               |  |  |               |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|--------------------------------------------------------------------------------------------|---------------------|--|------|-----------------------------------------|--|------|--|---------------|--|--|---------------|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                                                                            | For the 3rd quarter |  |      | For the nine months ended September 30, |
| (US$millions)                                                                              | 2023                |  | 2022 |                                         |  | 2023 |  | 2022          |
|                                                                                            |                     |  |      |                                         |  |      |  |               |
| Profit for the Period                                                                      | 481.6          |  |      | 1,102.8                            |  |      |  | 1,813.9  |  |  | 2,761.7  |  |
| (+) Depreciation and amortization expenses                                                 | 74.7           |  |      | 63.0                               |  |      |  | 204.9    |  |  | 178.8    |  |
| (+) Finance costs                                                                          | 30.3           |  |      | 16.6                               |  |      |  | 89.6     |  |  | 65.4     |  |
| (+) Income tax expense                                                                     | 216.1          |  |      | 451.5                              |  |      |  | 719.3    |  |  | 1,119.6  |  |
| EBITDA                                                                                     | 802.6          |  |      | 1,634.0                            |  |      |  | 2,827.7  |  |  | 4,125.5  |  |
| (-) Other income                                                                           | 4.2            |  |      | 2.7                                |  |      |  | 36.4     |  |  | 7.6      |  |
| (-) Other gains (losses)                                                                   | (1.1)               |  |      | (0.0)                                   |  |      |  | 0.2      |  |  | (0.4)         |  |
| (-) Share of Profit of associates and joint ventures accounted for using the equity method | 1.8            |  |      | 3.3                                |  |      |  | (0.9)         |  |  | 17.5     |  |
| (+) Other Expenses                                                                         | (5.8)               |  |      | (31.8)                                  |  |      |  | (27.8)        |  |  | (56.3)        |  |
| (+) Impairment of financial assets and reversal of impairment losses                       | (0.6)               |  |      | 2.7                                |  |      |  | (2.2)         |  |  | (5.7)         |  |
| (-) Finance income                                                                         | 34.0           |  |      | 8.2                                |  |      |  | 85.7     |  |  | 17.9     |  |
| (-) Foreign currency translation differences                                               | (18.2)              |  |      | (11.5)                                  |  |      |  | (16.2)        |  |  | (26.3)        |  |
| Adjusted EBITDA                                                                            | 788.2          |  |      | 1,660.3                            |  |      |  | 2,752.5  |  |  | 4,171.2  |  |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 6 |

----

|                                                     |                |  |                |  |  |  |  |  |  |  |  |
|-----------------------------------------------------|----------------|--|----------------|--|--|--|--|--|--|--|--|
|                                                     | As of Sep. 30, |  | As of Dec. 31, |
| (US$Millions)                                       | 2023           |  | 2022           |
|                                                     |                |  |                |
| Total Current Assets                                | 6,232.4        |  | 6,991.5        |
| Cash and cash equivalents                           | 1,185.4        |  | 2,655.2        |
| Other current financial assets                      | 1,585.9        |  | 961.4          |
| Accounts receivable (1)                             | 1,082.7        |  | 1,169.0        |
| Inventory                                           | 1,868.1        |  | 1,784.3        |
| Others                                              | 510.3          |  | 421.6          |
|                                                     |                |  |                |
| Total Non-current Assets                            | 4,738.2        |  | 3,827.6        |
| Other non-current financial assets                  | 11.9           |  | 32.1           |
| Investments in related companies                    | 89.8           |  | 54.4           |
| Property, plant and equipment                       | 3,390.0        |  | 2,726.8        |
| Other Non-current Assets                            | 1,246.4        |  | 1,014.2        |
|                                                     |                |  |                |
| Total Assets                                        | 10,970.6       |  | 10,819.1       |
|                                                     |                |  |                |
| Total Current Liabilities                           | 2,729.8        |  | 3,051.5        |
| Short-term debt                                     | 1,145.0        |  | 523.0          |
| Others                                              | 1,584.8        |  | 2,528.5        |
|                                                     |                |  |                |
| Total Long-Term Liabilities                         | 2,957.5        |  | 2,835.6        |
| Long-term debt                                      | 2,476.0        |  | 2,394.2        |
| Others                                              | 481.5          |  | 441.3          |
|                                                     |                |  |                |
| Shareholders’ Equity before Minority Interest | 5,245.7        |  | 4,896.6        |
|                                                     |                |  |                |
| Minority Interest                                   | 37.6           |  | 35.4           |
|                                                     |                |  |                |
| Total Shareholders’ Equity                    | 5,283.3        |  | 4,932.0        |
|                                                     |                |  |                |
| Total Liabilities & Shareholders’ Equity  | 10,970.6       |  | 10,819.1       |
|                                                     |                |  |                |
| Liquidity (2)                                       | 2.3            |  | 2.3            |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 7 |

----

|                                     |                     |  |                                    |           |         |     |           |        |        |           |  |  |  |  |  |  |  |  |  |  |  |  |  |
|-------------------------------------|---------------------|--|------------------------------------|-----------|---------|-----|-----------|--------|--------|-----------|--|--|--|--|--|--|--|--|--|--|--|--|--|
|                                     | For the 3rd quarter |  | For the nine months ended Sep. 30, |
| (US$Millions)                       | 2023                |  | 2022                               |           | 2023    |     | 2022      |
|                                     |                     |  |                                    |           |         |     |           |
| Revenues                            | 1,840.3             |  | 2,958.3                            |           | 6,155.9 |     | 7,577.0   |
|                                     |                     |  |                                    |           |         |     |           |
| Lithium and Lithium Derivatives     | 1,277.9             |  | 2,334.9                            |           | 4,388.7 |     | 5,627.8   |
| Specialty Plant Nutrition (1)       | 221.7               |  | 292.5                              |           | 690.2   |     | 898.1     |
| Iodine and Iodine Derivatives       | 213.0               |  | 215.1                              |           | 674.0   |     | 541.8     |
| Potassium                           | 75.2                |  | 60.2                               |           | 228.2   |     | 356.7     |
| Industrial Chemicals                | 43.4                |  | 45.2                               |           | 156.4   |     | 131.2     |
| Other Income                        | 9.1                 |  | 10.5                               |           | 18.3    |     | 21.4      |
|                                     |                     |  |                                    |           |         |     |           |
| Cost of Sales                       | (1,012.0)           |  |                                    | (1,262.6) |         |     | (3,276.6) |        |        | (3,303.4) |  |
| Depreciation and Amortization       | (74.7)              |  |                                    | (63.0)    |         |     | (204.9)   |        |        | (178.8)   |  |
|                                     |                     |  |                                    |           |         |     |           |
| Gross Profit                        | 753.6               |  | 1,632.7                            |           | 2,674.3 |     | 4,094.8   |
|                                     |                     |  |                                    |           |         |     |           |
| Administrative Expenses             | (40.1)              |  |                                    | (35.4)    |         |     | (126.8)   |        |        | (102.3)   |  |
| Financial Expenses                  | (30.3)              |  |                                    | (16.6)    |         |     | (89.6)    |        |        | (65.4)    |  |
| Financial Income                    | 34.0                |  | 8.2                                |           | 85.7    |     | 17.9      |
| Exchange Difference                 | (18.2)              |  |                                    | (11.5)    |         |     | (16.2)    |        | (26.3) |           |
| Other                               | (1.4)               |  | (23.1)                             |           |         | 5.8 |           | (37.3) |        |
|                                     |                     |  |                                    |           |         |     |           |
| Income Before Taxes                 | 697.6               |  | 1,554.3                            |           | 2,533.2 |     | 3,881.3   |
|                                     |                     |  |                                    |           |         |     |           |
| Income Tax                          | (216.1)             |  |                                    | (451.5)   |         |     | (719.3)   |        |        | (1,119.6) |  |
|                                     |                     |  |                                    |           |         |     |           |
| Net Income before minority interest | 481.6               |  | 1,102.8                            |           | 1,813.9 |     | 2,761.7   |
|                                     |                     |  |                                    |           |         |     |           |
| Minority Interest                   | (2.2)               |  |                                    | (2.9)     |         |     | (4.4)     |        |        | (6.5)     |  |
|                                     |                     |  |                                    |           |         |     |           |
| Net Income                          | 479.4               |  | 1,099.9                            |           | 1,809.5 |     | 2,755.3   |
| Net Income per Share (US$)          | 1.68                |  | 3.85                               |           | 6.33    |     | 9.65      |

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 8 |

----

|                                  |   |  |  |  |  |
|----------------------------------|---|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 9 |

----

|                             |                                           |  |  |  |  |
|-----------------------------|-------------------------------------------|--|--|--|--|
|                             | CHEMICAL AND MINING COMPANY OF CHILE INC. |
|                             | (Registrant)                              |
| Date: November 15, 2023 | /s/ Gerardo Illanes               |
|                             | By: Gerardo Illanes                   |
|                             | CFO                                       |

|                                  |    |  |  |  |  |
|----------------------------------|----|--|--|--|--|
| SQM S.A. 3Q2023 Earnings release | 10 |