| Schedule of Changes in Equity |
| | | | | | | | | | | | | | | | | | | | | | | | Millions of Dollars | | | | | | | | | Common Stock | | | | | | | Par Value | Capital in Excess of Par | Treasury Stock | Accum. Other Comprehensive Income (Loss) | Retained Earnings | Total | | | For the three months ended June 30, 2026 | | | | | | | | | | Balances at March 31, 2026 | $ | 23 | | 77,761 | | (77,231) | | (6,028) | | 70,016 | | 64,541 | | | | | Net income (loss) | | | | | 3,931 | | 3,931 | | | | | Other comprehensive income (loss) | | | | (148) | | | (148) | | | | | | | | | | | | | Dividend declared ($0.84 per common share) | | | | | (1,025) | | (1,025) | | | | | | | | | | | | | | Repurchase of company common stock | | | (2,000) | | | | (2,000) | | | | | Excise tax on share repurchases | | | (20) | | | | (20) | | | | | Distributed under benefit plans | | 71 | | | | | 71 | | | | | Other | | | | | (1) | | (1) | | | | | Balances at June 30, 2026 | $ | 23 | | 77,832 | | (79,251) | | (6,176) | | 72,921 | | 65,349 | | | | | | | | | | | | | For the six months ended June 30, 2026 | | | | | | | | | Balances at December 31, 2025 | $ | 23 | | 77,728 | | (76,217) | | (5,911) | | 68,864 | | 64,487 | | | | Net income (loss) | | | | | 6,114 | | 6,114 | | | | Other comprehensive income (loss) | | | | (265) | | | (265) | | | | | | | | | | | | | Dividends declared ($1.68 per common share) | | | | | (2,057) | | (2,057) | | | | | | | | | | | | | Repurchase of company common stock | | | (3,006) | | | | (3,006) | | | | | Excise tax on share repurchases | | | (27) | | | | (27) | | | | Distributed under benefit plans | | 104 | | | | | 104 | | | | Other | | | (1) | | | | (1) | | | | Balances at June 30, 2026 | $ | 23 | | 77,832 | | (79,251) | | (6,176) | | 72,921 | | 65,349 | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Millions of Dollars | | Common Stock | | | | | Par Value | Capital in Excess of Par | Treasury Stock | Accum. Other Comprehensive Income (Loss) | Retained Earnings | Total | For the three months ended June 30, 2025 | | | | | | | | Balances at March 31, 2025 | $ | 23 | | 77,554 | | (72,666) | | (6,394) | | 66,721 | | 65,238 | | | Net income (loss) | | | | | 1,971 | | 1,971 | | | Other comprehensive income (loss) | | | | 492 | | | 492 | | | | | | | | | Dividend declared ($0.78 per common share) | | | | | (984) | | (984) | | | | | | | | | | Repurchase of company common stock | | | (1,222) | | | | (1,222) | | | Excise tax on share repurchases | | | (12) | | | | (12) | | Distributed under benefit plans | | 89 | | | | | 89 | | | Other | | | 1 | | | (1) | | — | | Balances at June 30, 2025 | $ | 23 | | 77,643 | | (73,899) | | (5,902) | | 67,707 | | 65,572 | | | | | | | | | For the six months ended June 30, 2025 | | | | | | | Balances at December 31, 2024 | $ | 23 | | 77,529 | | (71,152) | | (6,473) | | 64,869 | | 64,796 | | Net income (loss) | | | | | 4,820 | | 4,820 | | Other comprehensive income (loss) | | | | 571 | | | 571 | | | | | | | | | Dividends declared ($1.56 per common share) | | | | | (1,982) | | (1,982) | | | | | | | | | Repurchase of company common stock | | | (2,722) | | | | (2,722) | | | Excise tax on share repurchases | | | (25) | | | | (25) | | Distributed under benefit plans | | 114 | | | | | 114 | | | | | | | | | Balances at June 30, 2025 | $ | 23 | | 77,643 | | (73,899) | | (5,902) | | 67,707 | | 65,572 | |
|