SOUTHWEST AIRLINES CO

6. NET INCOME PER SHARE

The following table sets forth the computation of basic and diluted net income per share (in millions, except per share amounts). Basic net income per share is calculated by dividing Net income by the weighted average of shares outstanding during the period. Diluted net income per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the three and nine months ended September 30, 2026 and the nine months ended September 30, 2025, an immaterial number of shares related to the Company's restricted stock units were excluded from the denominator because inclusion of such shares would be antidilutive. There were no antidilutive restricted stock units for the three months ended September 30, 2025. During second quarter 2025, the Company's remaining balance of 1.25 percent Convertible Senior Notes due 2025 (the "Convertible Notes") of$1.6 billion was repaid, settling both principal and accrued interest. For the nine months ended September 30, 2025, the weighted average impact for the outstanding portion of the Convertible Notes during the period was antidilutive. See Note 10 for further information on the Convertible Notes.