CUSIP 449681105 SCHEDULE 13G Page 1 of 9 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), and (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) IMCO RECYCLING INC. ------------------- (Name of Issuer) Common Stock, $0.10 par value ------------------------------ (Title of Class of Securities) 449681105 ------------- (CUSIP Number) December 31, 2002 ------------------ (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] 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). CUSIP 449681105 SCHEDULE 13G Page 2 of 9 1 Name of Reporting Person WENTWORTH, HAUSER & VIOLICH IRS Identification No. of Above Person 2 Check the Appropriate Box if a member of a Group (a) [ ] (b) [ ] 3 SEC USE ONLY 4 Citizenship or Place of Organization California, United States NUMBER OF 5 Sole Voting Power 0 SHARES BENEFICIALLY 6 Shared Voting Power 1,052,025 OWNED BY EACH REPORTING 7 Sole Dispositive Power 0 PERSON WITH 8 Shared Dispositive Power 1,052,025 9 Aggregate Amount Beneficially Owned by Each Reporting Person 1,052,025 10 Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] 11 Percent of Class Represented by Amount in Row 9 7.0% 12 Type of Reporting Person IA CUSIP 449681105 SCHEDULE 13G Page 3 of 9 1 Name of Reporting Person LAIRD NORTON FINANCIAL GROUP, INC. IRS Identification No. of Above Person 2 Check the Appropriate Box if a member of a Group (a) [ ] (b) [ ] 3 SEC USE ONLY 4 Citizenship or Place of Organization Washington, United States NUMBER OF 5 Sole Voting Power 0 SHARES BENEFICIALLY 6 Shared Voting Power 1,052,025 OWNED BY EACH REPORTING 7 Sole Dispositive Power 0 PERSON WITH 8 Shared Dispositive Power 1,052,025 9 Aggregate Amount Beneficially Owned by Each Reporting Person 1,204,025 10 Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] 11 Percent of Class Represented by Amount in Row 9 8.0% 12 Type of Reporting Person HC CUSIP 449681105 SCHEDULE 13G Page 4 of 9 Item 1(a). Name of Issuer. IMCO Recycling Inc. (the "Company") Item 1(b). Address of Issuer's Principal Executive Offices. 5215 North O'Connor Blvd., Suite 1500 Central Tower at Williams Square Irving, TX 75039 Item 2(a). Names of Persons Filing. Wentworth, Hauser & Violich ("Wentworth") Laird Norton Financial Group, Inc. ("LNFG") Item 2(b). Address of Principal Business Office or, if none, Residence. The Address of Wentworth is: 353 Sacramento Street, Suite 600 San Francisco, CA 94111 The Address of LNFG is: Laird Norton Financial Group, Inc. 801 Second Ave., Suite 1600 Seattle, WA 98104 Item 2(c). Citizenship. United States. Item 2(d). Title of Class of Securities. Common Stock, $0.10 par value Item 2(e). CUSIP Number. 449681105 Item 3. Type of Reporting Person. If this statement is filed pursuant to Rule 13d-1(b) or Rule 13d-2(b) or (c), check whether the person filing is a: (a) [ ] Broker or dealer registered under section 15 of the Exchange Act. (b) [ ] Bank as defined in section 3(a)(6) of the Exchange Act. (c) [ ] Insurance company as defined in section 3(a)(19) of the Exchange Act. (d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940. (e) [X] An investment adviser in accordance with Rule 13d-1(b) (1)(ii)(E); CUSIP 449681105 SCHEDULE 13G Page 5 of 9 (f) [ ] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [X] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940; (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). Item 4. Ownership. Reference is hereby made to Items 5-9 and 11 of page two (2) and page three (3) of this Schedule 13G, which Items are incorporated by reference herein. Of the 1,204,025 shares of the Company listed on page three (3) of this Schedule, 1,052,025 shares are held by Wentworth (as reported on page two (2) of this Schedule). Because Wentworth is a wholly owned subsidiary of LNFG, it is possible that LNFG may be deemed a beneficial owner of the shares held by Wentworth by virtue of the definition of "beneficial owner" in Rule 13d-3 under the Securities Exchange Act of 1934. The filing of this Schedule shall not be construed as an admission by LNFG that it is a beneficial owner of any securities of the Company held by Wentworth. The additional 152,000 shares of the Company listed on page three (3) of this Schedule are held by Laird Norton Trust Company ("LNTC"), another wholly owned subsidiary of LNFG. As with the shares held by Wentworth, the filing of this Schedule shall not be construed as an admission by LNFG that it is a beneficial owner of any of the securities of the Company held by LNTC. In addition, it is possible that the individual general partners, directors, executive officers, members, and/or managers of Wentworth or LNFG might be deemed the "beneficial owners" of some or all of the securities to which this Schedule relates in that they might be deemed to share the power to direct the voting or disposition of such securities. Neither the filing of this Schedule nor any of its contents shall be deemed to constitute an admission that any of such individuals is, for any purpose, the beneficial owner of any of the securities to which this Schedule relates, and such beneficial ownership is expressly disclaimed. 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. Wentworth is deemed to be the beneficial owner of the number of securities reflected in Items 5-9 and 11 of page two (2) of this Schedule 13G pursuant to separate arrangements whereby Wentworth acts as investment adviser to certain persons. Each person for whom the reporting person acts as investment adviser has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Stock purchased or held pursuant to such arrangements. CUSIP 449681105 SCHEDULE 13G Page 6 of 9 Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company. LNFG is the parent holding company of Wentworth and LNTC. Wentworth is an investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E). LNTC is a bank in accordance with Rule 13d- 1(b)(1)(ii)(B). Item 8. Identification and Classification of Members of the Group. Not applicable. Item 9. Notice of Dissolution of Group. Not applicable. Item 10. Certification. By signing below the undersigned certify that, to the best of their knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 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. WENTWORTH, HAUSER & VIOLICH By:/s/Bradford Hall ------------------- Bradford Hall, Chief Compliance Officer DATED: February 11, 2003 CUSIP 449681105 SCHEDULE 13G Page 7 of 9 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. LAIRD NORTON FINANCIAL GROUP, INC. By:/s/ Earl Bell ------------------------ Earl Bell, Senior Vice President and Chief Financial Officer DATED: February 10, 2003 CUSIP 449681105 SCHEDULE 13G Page 8 of 9 EXHIBIT INDEX Exhibit A Joint Filing Undertaking CUSIP 449681105 SCHEDULE 13G Page 9 of 9 EXHIBIT A JOINT FILING UNDERTAKING The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13G to evidence the agreement of the below- named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule, as it may be amended, jointly on behalf of each of such parties. Dated: February 11, 2003 WENTWORTH, HAUSER & VIOLICH By:/s/Bradford Hall ----------------- Bradford Hall, Chief Compliance Officer Dated: February 10, 2003 LAIRD NORTON FINANCIAL GROUP, INC. By:/s/Earl Bell --------------------- Earl Bell, Senior Vice President and Chief Financial Officer