Note 18 — Earnings Per Share

Basic and diluted earnings per share are calculated by dividing net income attributable to WTW by the average number of ordinary shares outstanding during each period. The computation of diluted earnings per share reflects the potential dilution that could occur if dilutive securities and other contracts to issue shares were exercised or converted into shares or resulted in the issuance of shares that then shared in the net income of the Company.

At June 30, 2026 and 2025, there were approximately 864,000 and 654,000 restricted performance-based stock units outstanding, respectively, and approximately 620,000 and 291,000 restricted time-based stock units outstanding, respectively. In addition, at June 30, 2026, there were approximately 225,000 restricted stock awards outstanding. The Company had no time-based share options or performance-based share options outstanding at June 30, 2026 and 2025.

For the three and six months ended June 30, 2026, approximately 667,000 and 337,000 restricted stock units, respectively, were not included in the computation of the dilutive effect of potentially issuable shares because their effect was anti-dilutive; for the three and six months ended June 30, 2025, approximately 268,000 and 135,000 restricted stock units, respectively, were not included in the computation of the dilutive effect of potentially issuable shares because their effect was anti-dilutive. There were no anti-dilutive options for the three and six months ended June 30, 2026 and 2025.