Investor Update April 2022

P&R Businesses QoQ: Soften performance primarily from petrochemical business resulted from higher feed cost and lower volume 2021 vs 2020: Robust performance from stock gain and petrochemical prices hiked following global demand recovery Olefins ptt Aromatics Olefins U-Rate (GC's Plant) 104% 97% 91% 80% 91% BTX U-Rate 98% 100% 97% 99% 96% PP: HDPE: 7% QoQ (GC's plant) PX: 3% QoQ PX: 49% PP: 33% BZ: 5% QoQ BZ: 88% Avg. Price: 10% QoQ HDPE: 34% $/Ton LLDPE: 8% QoQ LLDPE: 38% Avg. Price: $/Ton 993 945 914 859 561 919 893 577 1,335 1,250 1,321 1,285 ! 529 PX: 31% QoQ 485 PX: 16% 1,142 1,200 Spread to Condensate: $/Ton BZ: 1,252 31% QoQ BZ: > 100% 992 1,000 1,185 I 1,182 377 I 303 318 1,138 262 263 I 983 880 192161 210 227 136 867 | 4Q20 3Q21 4Q21 2020 2021 4Q20 3Q21 4Q21 2020 2021 Refinery Net Income (100%) Refinery 95% 102% Unit: MMTHB 7% QoQ U-Rate 88% 96% 95% 31% YoY Avg. 78.4 71.7 69.2 >100% 72,336 271 PTT TANK Dubai 44.6 42.2 $/bbl. 5.9 Acc. 5.1 15,333 62 11,300 44,982 GC 10,506 GRM 3.2 6,405 2.5 78 $/bbl. (0.4) 1,608 3,347 31 1.8 7,005 (8,976) 14,505 IRPC 2,195 7,258 2,155 3.3 Hedging 2,062 5,033 3.3 G/L 277 200 12,578 TOP 5.5 1.5 (3,301) 0.3 2.9 ■Stock G/L 1.6 2.1 1.0 excl. NRV (0.6) (2.2) (1.4) (1.7) (1.1) Mkt GRM (6,152) 4Q20 3Q21 4Q21 2020 2021 4Q20 3Q21 4Q21 2020 2021 42

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