Investor Update April 2022

Debt Profile: Control Cost & Manage Risk Managed debt according to financial risk and policy Unit: MMTHB PTT Only Cost of debts ~ 3.70% : % fixed-rate : Avg. debt life ~ 76.59% ~ 14.91 years USD&Others THB Debt Portfolio Unit: MMTHB 40,000 35,000 30,000 25,000 20,000 15,000 16,000 10,000 6,050 5,000 4,050 2.000 2022 2023 39,354 21,000 3,000 13,000 117,381 32,679 (28%) 84,702 (72%) 31 Dec 19 146,433 53,946 (37%) 92,487 (63%) 31 Dec 20 Note: 1. PTT Data as of 31 Dec 21 (THB/USD = 33.5929 THB/JPY = 0.2944) excluding liabilities from finance leases. 189,451 59,244 (31%) 130,207 (69%) 369,409 (61%) 31 Dec 21 2. Debt Outstanding represents amount and portion before derivative swaps, and reconciled with accounting. 3. Cost of debts, % fixed rate, and avg. debt life took into account the derivative transactions, including withholding tax (update as of 31 Dec 21). 449,943 (61%) 484,588 (55%) 31 Dec 19 31 Dec 20 31 Dec 21 PTT Only: Debt Outstanding and Repayment Profile 605,458 236,049 (39%) 288,567 (39%) Consolidated : Cost of debts : % fixed-rate : Avg. debt life 738,510 ~ 3.22% ~ 67.88% ~ 10.67 years 873,872 389,284 (45%) 2025 2024 Note: 1. Debt Outstanding for Repayment Profile represents financial data and portion after derivative swaps 5,000 2026 2. Bond repayment amounting 4,050 MB in 2022 is THB swaps to USD and amounting 6,236 MB in 2035 is USD swaps to THB 8,000 2027 2028 2,000 2029 15,595 3.359 2030 2031 2032 12,236 19,168 2033 6,616 2034 23,515 2035 2036 7,000 2042 2045 2070 As of 31 Dec 21 FX: 33.5929 200,000 USD (LHS) THB (LHS) 160,000 PTT Debt Outstanding (RHS) 120,000 80,000 40,000 4,000 2110 *PTTC10DA (Century Bonds) is due on 2 Dec 2110 ptt 34

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