UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION

                           Washington, D.C. 20549


                                SCHEDULE 13G


                 Under the Securities Exchange Act of 1934

                              (Amendment No.)


                       FactSet Research Systems Inc.
                              (Name of Issuer)


                                Common Stock
                       (Title of Class of Securities)


                                 303075105
                               (CUSIP Number)


          *The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to the
subject class of securities, and for any subsequent amendment
containing information which would alter the disclosures provided in a
prior cover page.

          The information required in the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section 18 of the
Securities Exchange Act of 1934 ("Act") or otherwise subject to the
liabilities of that section of the Act but shall be subject to all
other provisions of the Act (however, see the Notes).





CUSIP No. 303075105 13G Page 2 of 5 pages --- --- - -------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Howard E. Wille 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] N/A (b) [ ] 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - --------------------- 5 SOLE VOTING POWER NUMBER OF 2,063,025 SHARES BENEFICIALLY 6 HARED VOTING POWER OWNED BY EACH 0 REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 2,063,025 8 SHARED DISPOSITIVE POWER 0 - --------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,063,025 10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 21.44% 12 TYPE OF REPORTING PERSON* IN - --------------------------------------------------------------------------- * SEE INSTRUCTION BEFORE FILLING OUT!

CUSIP No. 303075105 13G Page 3 of 5 pages --- --- - --------------------------------------------------------------------------- Item 1(a). Name of Issuer FactSet Research Systems Inc. Item 1(b). Address of Issuer's Principal Executive Offices One Greenwich Plaza Greenwich, CT 06830 Item 2(a). Name of Person Filing Howard E. Wille Item 2(b). Address of Principal Business Office One Greenwich Plaza Greenwich, CT 06830 Item 2(c). Citizenship United States Item 2(d). Title of Class of Securities Common Stock Item 2(e). CUSIP Number 303075105 Item 3. If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b), check whether the person filing is a: N/A Item 4. Ownership (a) Amount Beneficially Owned: 2,063,025 (b) Percent of Class: 21.44% (c) Number of Shares as to which such person has: (i) sole power to vote or to direct the vote: 2,063,025 (ii) shared power to vote or to direct the vote: 0 (iii) sole power to dispose of to direct the disposition of: 2,063,025 (iv) shared power to dispose or to direct the disposition of: 0 Item 5. Ownership of Five Percent or Less of a Class N/A

CUSIP No. 303075105 13G Page 4 of 5 pages --- --- - --------------------------------------------------------------------------- Item 6. Ownership of More than Five Percent on Behalf of Another Person N/A Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company N/A Item 8. Identification and Classification of members of the Group N/A Item 9. Notice of Dissolution of Group N/A Item 10. Certification N/A

CUSIP No. 303075105 13G Page 5 of 5 pages --- --- - --------------------------------------------------------------------------- SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. by /s/ Howard E. Wille ---------------------------- Name: Howard E. Wille Title: Chairman and Chief Executive Officer Dated: