v3.25.4
Earnings per share
12 Months Ended
Dec. 31, 2025
Earnings per share [abstract]  
Earnings per share
4.6 Earnings per share

Basic earnings per share ("EPS") is calculated by dividing On’s net income for the period by the weighted average number of ordinary shares outstanding during the year. Diluted EPS is calculated by dividing On’s net income for the period by the weighted average number of ordinary shares outstanding during the year plus the weighted average number of ordinary shares that would have been outstanding when assuming the conversion of all potentially dilutive share-based awards. Dilutive effects arise from equity settled shares associated with share-based compensation.
202520252024202420232023
Class AClass BClass AClass BClass AClass B
Weighted number of outstanding shares295,550,380 339,541,070 288,465,380 345,437,500 284,262,802 345,437,500 
Weighted number of shares with dilutive effects3,228,817 11,251,482 3,787,481 12,822,456 3,306,122 11,446,403 
Weighted number of outstanding shares (diluted and undiluted)298,779,197 350,792,552 292,252,861 358,259,956 287,568,924 356,883,903 
Net income (CHF in millions)182.7 21.0 216.3 25.9 70.9 8.6 
Basic EPS (CHF)0.62 0.06 0.75 0.07 0.25 0.02 
Diluted EPS (CHF)0.61 0.06 0.74 0.07 0.25 0.02