AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 28, 1996

 
                                                       REGISTRATION NO. 333-
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- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                              -------------------
 


                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                              -------------------


                         FACTSET RESEARCH SYSTEMS INC.
             (Exact name of registrant as specified in its charter)
 

                                                        
          DELAWARE                         7374                        13-3362547
(State or Other Jurisdiction   (Primary Standard Industrial         (I.R.S. Employer
             of                   Classification Number)           Identification No.)
      Incorporation or
        Organization)

 
                              -------------------
 
                              ONE GREENWICH PLAZA
                          GREENWICH, CONNECTICUT 06830
                                 (203) 863-1500
  (Addresss, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                              -------------------
 
                                HOWARD E. WILLE
                       CHAIRMAN & CHIEF EXECUTIVE OFFICER
                         FACTSET RESEARCH SYSTEMS INC.
                              ONE GREENWICH PLAZA
                          GREENWICH, CONNECTICUT 06830
                                 (203) 863-1500
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)
                              -------------------
 
                                   COPIES TO:
 

                                            
        WILLIAM P. ROGERS, JR., ESQ.                     SARAH JONES BESHAR, ESQ.
           CRAVATH, SWAINE & MOORE                         DAVIS POLK & WARDWELL
               WORLDWIDE PLAZA                             450 LEXINGTON AVENUE
              825 EIGHTH AVENUE                          NEW YORK, NEW YORK 10017
          NEW YORK, NEW YORK 10019                            (212) 450-4131
               (212) 474-1270

 
                              -------------------
 
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon 
as practicable after this Registrastion Statement becomes effective.
     If any of the securities being registered on this Form are to be offered 
on a delayed or continuous basis pursuant to Rule 415 under the Securities Act 
of 1933, check the following box.  / /
     If this Form is filed to register additional securities for an offering 
pursuant to Rule 462(b) under the Securities Act, please check the following 
box and list the Securities Act registration statement number of the earlier 
effective registration statement for the same offering.  /X/ Reg. No. 333-4238
                          
                              -------------------

     If this Form is a post-effective amendment filed pursuant to Rule 462(c) 
under the Securities Act, please check the following box and list the Securities
Act registration statement number of the earlier effective registration 
statement for the same offering.  / /
                              -------------------
     If the delivery of the prospectus is expected to be made pursuant to 
Rule 434, please check the following box.  / /
                              -------------------
                        CALCULATION OF REGISTRATION FEE



                                                                          PROPOSED 
                                                                          MAXIMUM  
                                                                          OFFERING 
                                                     AMOUNT               PRICE PER    PROPOSED                MAXIMUM    
                TITLE OF EACH CLASS OF SECURITIES   TO BE                 SHARE       AGGREGATE OFFERING       AMOUNT OF    
                         TO BE REGISTERED          REGISTERED                         PRICE(1)            REGISTRATION FEE
                                                                                                
Common Stock, par value $.01 per share.............  64,339 shares         $17        $1,093,750             $378.00


(1) CALCULATED PURSUANT TO RULE 457 UNDER THE SECURITIES ACT.


                        STATEMENT PURSUANT TO RULE 462(b)

     The contents contained in Registration Statement No. 333-4238 filed 
with the Commission on April 30, 1996, as amended by Amendment No. 1 
thereto filed with the Commission on June 5, 1996, Amendment No. 2 therein 
filed with the Commission on June 26, 1996 are incorporated by reference into, 
and shall be deemed part of, this registration statement.
========================================================================

                                       2


SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Greenwich, Connecticut, on June 28, 1996. FACTSET RESEARCH SYSTEMS INC. By: /s/ Howard E. Wille ---------------------------------- Howard E. Wille Chairman of the Board of Directors and Chief Executive Officer Each person whose signature appears below appoints Howard E. Wille, as his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto and all other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and anything appropriate or necessary to be done, as fully and for all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in- fact and agent or his substitute or substitutes may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated. Signatures Titles Dates ---------- ------ ----- /s/ Howard E. Wille - ---------------------------- Chairman of the Board of Directors and Chief June 28, 1996 Howard E. Wille Executive Officer (Principal Executive Officer) /s/ Charles J. Snyder - ---------------------------- President and Director June 28, 1996 Charles J. Snyder /s/ Ernest S. Wong - ---------------------------- Chief Financial Officer (Principal Accounting Officer) June 28, 1996 Ernest S. Wong - ---------------------------- Director June 28, 1996 Joseph E. Laird, Jr.

EXHIBIT INDEX Exhibit Number - ------- *5.1 Opinion of Cravath, Swaine & Moore. *23.1 Consent of Price Waterhouse, LLP. *23.2 Consent of Cravath, Swaine & Moore (included in Exhibit 5.1). *24.1 Powers of attorney for the Company (contained on the signature page of this Registration Statement). - ---------- * Filed herewith.



                                                                     Exhibit 5.1




                       [CRAVATH, SWAINE & MOORE LETTERHEAD]



                                                                 June 28, 1996



Ladies and Gentlemen:

          Reference is made to the initial public offering by FactSet Research
Systems Inc., a Delaware corporation (the "Company"), of up to 3,593,750 shares
of the Company's Common Stock, par value $0.01 per share (the "Shares"),
pursuant to a Registration Statement on Form S-1 under the Securities Act of
1933, as amended (the "Act") and a Registration Statement filed in accordance
with Rule 462(b) under the Act. The Shares include 468,750 shares which are 
subject to an over-allotment option granted by the selling stockholders (the 
"Selling Stockholders") to the Underwriters named in the Registration Statement.

          As counsel for the Company, we have examined originals, or copies
certified or otherwise identified to our satisfaction, of such documents,
corporate records, and other instruments as we have deemed necessary or
appropriate for the purposes of this opinion, including: (a) the Restated
Certificate of Incorporation, as amended; (b) the By-Laws of the Company, as
amended; (c) various corporate records and proceedings relating to the
organization of the Company and the issuance of the Shares; and (d) a specimen
certificate representing the Shares.

          Based upon the foregoing, we are of the opinion that the Shares have
been duly authorized and validly issued and are fully-paid, non-assessable and
not subject to any preemptive or similar rights.

          We are furnishing this opinion solely for the benefit of the Company.
This opinion may not be relied upon

2 by any other person or for any other purpose or used, circulated, quoted or otherwise referred to for any other purpose. We consent to the use of this opinion as an Exhibit to the Registration Statement, and we consent to the reference to our firm under the caption "Legal Matters" in the Prospectus forming a part of the Registration Statement. Very truly yours, /s/ Cravath, Swaine & Moore FactSet Research Systems Inc. One Greenwich Plaza Greenwich, Connecticut 06830



                                                                Exhibit 23.1




                   CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-1 of our report dated April 26, 1996, except
as to Note 2 which is as of June 4, 1996, relating to the financial statements
of FactSet Research Systems Inc., which appears in such Prospectus. We also
consent to the references to us under the headings "Experts" and "Selected
Historical Consolidated Financial Information" in such Prospectus. However,
it should be noted that Price Waterhouse LLP has not prepared or certified such
"Selected Historical Consolidated Financial Information."


/s/ Price Waterhouse LLP

PRICE WATERHOUSE LLP

New York, New York
June 28, 1996