Chubb Ltd — Director's Dealing 2011

May 20, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACE Ltd (ACE)
CIK: 0000896159
Period of Report: 2011-05-18

Reporting Person: Cusumano Robert (General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-18	Common Shares	A	4010	—	Acquired	86173.84	Direct
2011-05-18	Common Shares	F	3652	$69.35	Disposed	82521.84	Direct
2011-05-20	Common Shares	S	5891	$68.80	Disposed	76630.84	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Shares	2300	Indirect

Footnotes

F1: Represents a fully vested premium award pursuant to the ACE Limited 2004 Long-Term Incentive Plan, which meets the requirements of Rule 16b-3.

F2: Common Shares being withheld in order to pay tax liability.

F3: The Common Shares sold by the Reporting Person and reported herein were sold at a range of between $68.76 and $68.84 per share. The sale price reported above represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent.