PTTEP Project Details and Financial Performance

Q1/2023 Results Q1 2023 Key events Net Profit P/L from normal operation P/L from non-operating items Profit from Normal Operations Sales Volume Bongkot End of Concession QoQ 569 417 592 723 -306 Q4 22 -23 Q1 23 -8% Completion of Brazil Divestment YOY Court Approval Montara Settlement 569 318 592 570 -23 -252 Q1 22 Q1 23 +8% Average Selling Price Unit Cost Major Non-operating items (in million USD) Oil Price Hedging Impairment / Asset Write-off Others Mainly from Oman B61, Sabah-H, Arthit -5% Lower liquid price and gas price -11% Lower DD&A and G&A, Higher finance cost Q4 22 -2 -205 Moz./ Angola -58 Montara/Oman B61 Q1 23 +1 Higher G1/61, G2/61 offset with lower Oman B61 -3% Lower liquid price offset with higher gas price -2% Lower DD&A and Royalty, Higher OPEX Q1 22 -240 Q1 23 +1 13 PTTEP

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