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1Q22 vs 1Q21 PTT Consolidated Performance (YoY): Lower NI from higher loss on derivative despite better margin and stock gain MMTHB Net Income 22% 32,588 25,571 27,714 Net Income excl. Extra items 11% 24,642 7,841 11,420 2,109 OPEX DD&A Stock Gain/(Loss) 1Q22: 27,309 1Q21: 15,889 36,125 5,362 1Q22: (24,596) 1Q22: (37,145) 1Q21: (16,755) 1Q21: (35,036) Other Income 1Q22: 1,780 1Q21: 7,142 31,539 Extra Items* (*PTT's portion net tax amount) 1Q22: PTT's discounted benefit from production shortfall ~+700 MB and GPSC's gain on Ichinoseki Solar Power 1 GK divestment ~+350 MB 1Q21 EP's gain on bargain purchase of Oman Block 61 ~+7,000 MB offset with write-off assets in Brazil ~-2,900 MB Others + Coal: Higher hedging loss from escalated Newcastle price and lower sales vol. despite avg. selling prices improved NBI (mainly from power) Lower profit margin of electricity sales to industrial customers as natural gas and coal costs significantly increased Oil & Retail Lower oil margin; especially diesel from a cap on retail price Higher oil sales volume from easing of lockdown measures + Non-oil: better sales vol. due to the recovery of economic activities and stores expansion Petrochemical & Refining Higher derivative loss despite improved operating profit Refinery + Higher Acc. GRM from higher stock gain and product spreads Petrochemical - Olefins & Aromatics: Lower product spreads 4,874 Margin 3,521 1Q22: 139,993 739 1Q21: 103,868 3,437 8,867 3,400 7,750 1Q21 Remark: *Included impairment 1/ Others business mainly contributed from PTT LNG, PTT NGD, PTTT and PTTGM etc. 2/ New Business and Infrastructure mainly contributed from power business PTTEP FX & Derivatives 1Q22: (43,267) 1Q21: (11,728) + 7,711 929 2,279 Extra Items ▼81% + Others/1 ▼ 35% Higher avg. selling prices from liquid price increased Higher avg. sales vol. from Oman Block 61 acquisition, Malaysia Block H, and Arthit projects. Int. & CIT Exp. & Other NBI/2 ▼ 99% 2,897 1Q22: (38,503) 1Q21: (30,792) 5,420 Oil & Retails P&R 16% PTT ▼39% Gas 6,872 PTTEP >100% 7,166 PTT ▼8% 1Q22 S&M: Higher pooled gas cost and lower overall gas sales vol. due to lower gas supply + GSP: Higher selling prices despite lower sales volume due to lower gas supply and higher feed gas cost Trading + Higher sales volume Decreased margin from MTM loss despite higher domestic condensate margin 11

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