Basic and diluted net income per share are calculated by dividing net income by the number of basic and diluted weighted-average ordinary shares outstanding during the period. For the three months ended March 31, 2025 and 2024 the weighted-average ordinary shares outstanding used to calculate basic and diluted net income per share were as follows:


	For the three months ended
	March 31, 2025	March 31, 2024
Basic weighted-average ordinary shares outstanding	148,498	150,480

Dilutive effect of unvested restricted securities	318	441
Diluted weighted-average ordinary shares outstanding	148,816	150,921

Net income and net income per share are presented in the condensed consolidated statements of operations.

Certain potential ordinary shares were excluded from our calculation of diluted weighted-average ordinary shares outstanding because either they would have had an anti-dilutive effect on net income per share or they related to equity awards that were contingently issuable for which the contingency had not been satisfied. These potential ordinary shares were as follows:


	For the three months ended
	March 31, 2025	March 31, 2024
Anti-dilutive shares excluded	1,137	1,763
Contingently issuable shares excluded	694	1,060