Investor Presentaiton

Petrochemical Scenario¹ - PE e PP US PE - Naphtha ARA Spread² (US$/ton) PE US - Ethane US Spread³ (US$/ton) PP Asia - Naphta ARA Spread4 (US$/ton) Average 3Q23 670 +10%) +27% Average 3Q23 252 841 800 +15% 742 ~740 683 586 +6% 331 345 249 243 265 ~290 1Q23 2Q23 Jul/23 Aug/23 Sep/23 4Q23e 1Q23 2Q23 Jul/23 Aug/23 Sep/23 4Q23e Average 3Q23 271 +11% -16% 334 346 292 278 244 ~270 1Q23 2Q23 Jul/23 Aug/23 Sep/23 4Q23e The lower level of global consumption, slowdown in industrial activity and greater product supply impacted resin spreads throughout 3Q23. However, some of petrochemical spreads showed an upward trend due to the increase in the price of resins on the international market. Note (1): External Consultants. Note (2): PE USG Brazil Mix = 0,3*LDPE US + 0,3* LLDPE US + 0,4*HDPE US. Note (3): PE USG Mexico Mix = 0,286*LDPE US +0,714 *HDPE US. PUBLIC Braskem 24

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