U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940 [_] Check box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). -------------------------------------------------------------------------------- 1. Name and Address of Reporting Person* MARSHALL Christopher Z. -------------------------------------------------------------------------------- (Last) (First) (Middle) c/o ACE Limited The ACE Building, 30 Woodbourne Avenue -------------------------------------------------------------------------------- (Street) Hamilton HM 08 BERMUDA -------------------------------------------------------------------------------- (City) (State) (Zip) -------------------------------------------------------------------------------- 2. Issuer Name and Ticker or Trading Symbol ACE Limited (NYSE: ACL) -------------------------------------------------------------------------------- 3. IRS Identification Number of Reporting Person, if an Entity (Voluntary) -------------------------------------------------------------------------------- 4. Statement for Month/Year March 2001 -------------------------------------------------------------------------------- 5. If Amendment, Date of Original (Month/Year) -------------------------------------------------------------------------------- 6. Relationship of Reporting Person to Issuer (Check all applicable) [_] Director [_] 10% Owner [X] Officer (give title below) [_] Other (specify below) Chief Financial Officer -------------------------------------------------------------------------------- 7. Individual or Joint/Group Filing (Check applicable line) [X] Form filed by one Reporting Person [_] Form filed by more than one Reporting Person -------------------------------------------------------------------------------- ================================================================================ Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned ================================================================================

* If the Form is filed by more than one Reporting Person, see Instruction 4(b)(v). Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. (Print or Type Responses) (Over) (Form 4-07/99) FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================

Signed for Christopher Z. Marshall pursuant to a power of attorney on file with the Securities and Exchange Commission /s/ Peter Mear April 18, 2001 --------------------------------------------- ----------------------- **Signature of Reporting Person Date ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure. Page 2

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