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PAGE 1 SECURITIES AND EXCHANGE COMMISSION FORM 13F-E Report for the Calendar Year or Quarter Ended: 12/31/97 Institutional Investment Manager: INVESTOR AB ARSENALSGATAN 8C, S-103 32 STOCKHOLM V7 NA UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F INFORMATION REQUIRED OF INSTITUTIONAL INVESTMENT MANAGERS PURSUANT TO SECTION 13(F) OF THE SECURITIES EXCHANGE ACT OF 1934 AND RULES THEREUNDER Report for the Calendar Year or Quarter Ended December 31, 1997. If amended report check here: [ ] INVESTOR AB - -------------------------------------------------------------------------------- Name of Institutional Investment Manager ARSENALSGATAN 8C, S - 103 32 STOCKHOLM SWEDEN - -------------------------------------------------------------------------------- Business Address MR. FREDRIK NILERT (212-508-0900), VICE PRESIDENT, TREASURER AND SECRETARY OF INVESTOR INTERNATIONAL (U.S.), INC. - -------------------------------------------------------------------------------- Name, Phone No. and Title of Person Duly Authorized to Submit This Report. ATTENTION INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACTS CONSTITUTE FEDERAL CRIMINAL VIOLATIONS. SEE 18 U.S.C. 1001 AND 15 U.S.C. 78FF(A). The institutional investment manager submitting this Form and its attachments and the person by whom it is signed represent hereby that all information contained therein is true, correct and complete. It is understood that all required items, statements and schedules are considered integral parts of this Form and that the submission of any amendment represents that all unamended items, statements and schedules remain true, correct and complete as previously submitted. Pursuant to the requirements of Securities Exchange Act of 1934, the undersigned institutional investment manager has caused this report to be signed on its behalf in the City of New York and the State of New York on the 14th day of February, 1998. PAGE 2 INVESTOR AB ------------------------------------ (Name of Institutional Investment Manager) ------------------------------------ (Manual Signature of Person Duly Authorized to Submit This Report) Name and 13F file numbers of ALL Institutional Investment Managers with respect to which this schedule is filled (other than the one filing this report): (List in alphabetical order). 13F File Numbers will be assigned to Institutional Investment Managers after they file their first report. NAME: 13F FILE NO.: 1. AB CATOR 2. EXTORIA TRADE AB 3. INVESTOR INTERNATIONAL (U.S.), INC. 4. INVESTOR INVESTMENTS AB 5. INVESTORS TRADING AB 6. INVESTOR UK, LTD. 7. SAAB SCANIA AB Name, Title and Telephone Number of Person Submitting Report: FREDRIK NILERT VP, TREAS., & SEC. (212) 508-0900 Signature, Place and Date of Signing: /s/ FREDRIK NILERT NEW YORK NY 02/13/98 PAGE 3 VALUE SHARES/ SH/ PUT/ INVSTMT -----VOTING AUTHORITY----- NAME OF ISSUER -TITLE OF CLASS- --CUSIP-- (x$1000) PRN AMT PRN CALL DSCRETN -MANAGERS- SOLE SHARED NONE REPORT SUMMARY 0 DATA RECORDS 0 0 OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED