X0306 4 2019-02-24 0 0001273813 ASSURED GUARANTY LTD AGO 0001539882 Brewer Russell B. II 30 WOODBOURNE AVENUE HAMILTON D0 HM08 BERMUDA 0 1 0 0 Chief Surveillance Officer Common Shares 2019-02-24 4 F 0 11137 41.55 D 167815.4578 D Common Shares 2019-02-24 4 M 0 45304 0.00 A 213119.4578 D Common Shares 2019-02-24 4 F 0 22186 41.55 D 190933.4578 D Performance Share Units 2019-02-24 4 M 0 22652 0.00 D Common Shares 22652 29586 D Common Shares being withheld to pay tax liability. Performance share units awarded pursuant to the Assured Guaranty Ltd. 2004 Long-Term Incentive Plan (the "Plan"). Using the highest 40-day average stock price during the performance period (7/1/2017 to 12/31/2018), 200.00% of the performance share units granted became vested. The number of Common Shares delivered equals the number of performance share units granted multiplied by 200.00%. Total includes performance units from tranches with different performance measures, performance periods and vesting dates. /s/ Ling Chow, Attorney-in-fact 2019-02-26