1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* Willbros Group, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, $.05 par value -------------------------------------------------------------------------------- (Title of Class of Securities) 969199 10 8 -------------------------------------------------------------------------------- (CUSIP Number) (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) *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). Page 1 of 4 2 CUSIP NO. 969199 10 8 13G Page 2 of 4 -------------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) Larry J. Bump -------------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] -------------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 1,300,891 BENEFICIALLY --------------------------------------------------------------------------------- 6 SHARED VOTING POWER OWNED BY -0- EACH --------------------------------------------------------------------------------- 7 SOLE DISPOSITIVE POWER REPORTING 1,300,891 PERSON --------------------------------------------------------------------------------- WITH 8 SHARED DISPOSITIVE POWER -0- -------------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,300,891 -------------------------------------------------------------------------------------------------------------------- 10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES -------------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 9.1 % -------------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON IN -------------------------------------------------------------------------------------------------------------------- 3 CUSIP NO. 969199 10 8 13G Page 3 of 4 Item 1. (a) Name of Issuer: Willbros Group, Inc. (b) Address of Issuer's Principal Executive Offices: Dresdner Bank Building 50th Street, 8th Floor P.O. Box 850048 Panama 5, Republic of Panama Item 2. (a) Name of Person Filing: Larry J. Bump (b) Address of Principal Business Office: 4400 Post Oak Parkway, Suite 1000 Houston, Texas 77027 (c) Citizenship: United States (d) Title of Class of Securities: Common Stock, par value $.05 (e) CUSIP Number: 969199 10 8 Item 3. If this statement is filed pursuant to Rules 13d-1(b), 13d-2(b) or (c), check whether the person filing is a: Not Applicable Item 4. Ownership. (a) Amount Beneficially Owned: 1,300,891 shares* (b) Percent of Class: 9.1% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 1,300,891* (ii) shared power to vote or to direct the vote: -0- (iii) sole power to dispose or to direct the disposition of: 1,300,891* (iv) shared power to dispose or to direct the disposition of: -0- --------------- * Includes (a) 420,000 shares held in a family limited partnership in which Mr. Bump is the sole general partner, (b) 185,000 shares subject to stock options which are currently exercisable at an average exercise price of $9.80 per share, and (c) 108,301 shares held in the Willbros Employees' 401(k) Investment Plan for the account of Mr. Bump. 4 CUSIP NO. 969199 10 8 13G Page 4 of 4 Item 5. Ownership of Five Percent or Less of a Class. Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not Applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. Not Applicable Item 8. Identification and Classification of Members of the Group. Not Applicable Item 9. Notice of Dissolution of Group. Not Applicable Item 10. Certification. Not Applicable 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. Dated: February 12, 2001 /s/ Larry J. Bump -------------------------------- Larry J. Bump