UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 Nanophase Technologies Corporation (Name of Issuer) COMMON STOCK, par value $.01 (Title of Class of Securities) 630079101 (CUSIP Number) David J. Allen, Esquire 290 South County Farm Road, Third Floor Wheaton, Illinois 60187-4526 Telephone: (630) 588-7200 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) September 8, 2003 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Section 240.13d-l(e), 240.13d-l(f) or 240.13d-l(g), check the following box. [X] NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Section 240.13d-7(b) for other parties to whom copies are to be sent. 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 disclosures provided in a prior cover page. The information required on 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). 2 Schedule 13D CUSIP No. 630079101 Page 2 of 8 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Grace Brothers, Ltd. 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization Illinois Limited Partnership 7 Sole Voting Power Number of 0 Shares 8 Shared Voting Power Beneficially 2,985,195 shares Owned by Each Reporting 9 Sole Dispositive Power Person 0 With 10 Shared Dispositive Power 2,985,195 shares 11. Aggregate Amount Beneficially Owned by Each Reporting Person 2,985,195 shares 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 19.0% 14. Type of Reporting Person (See instructions) PN, BD 3 Schedule 13D CUSIP No. 630079101 Page 3 of 8 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Grace Investments, Ltd. 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization Illinois Limited Partnership 7 Sole Voting Power Number of 0 Shares 8 Shared Voting Power Beneficially 1,069,750 shares Owned by Each Reporting 9 Sole Dispositive Power Person 0 With 10 Shared Dispositive Power 1,069,750 shares 11. Aggregate Amount Beneficially Owned by Each Reporting Person 1,069,750 shares 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 6.8% 14. Type of Reporting Person (See instructions) PN, 4 Schedule 13D CUSIP No. 630079101 Page 4 of 8 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Bradford T. Whitmore 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization United States 7 Sole Voting Power Number of 472,812 shares Shares Beneficially 8 Shared Voting Power Owned by 4,054,945 shares Each Reporting 9 Sole Dispositive Power Person 472,812 shares With 10 Shared Dispositive Power 4,054,945 shares 11. Aggregate Amount Beneficially Owned by Each Reporting Person 4,527,757 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 28.8% 14. Type of Reporting Person (See instructions) IN 5 Schedule 13D CUSIP No. 630079101 Page 5 of 8 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Spurgeon Corporation 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization Illinois Corporation 7 Sole Voting Power Number of 0 Shares Beneficially 8 Shared Voting Power Owned by 4,054,945 shares Each Reporting 9 Sole Dispositive Power Person 0 With 10 Shared Dispositive Power 4,054,945 shares 11. Aggregate Amount Beneficially Owned by Each Reporting Person 4,054,945 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 25.8% 14. Type of Reporting Person (See instructions) CO 6 Page 6 of 8 Pages Item 1. Security and Issuer This Schedule 13D relates to the Common Stock, par value $.01 per share (the "Common Stock") issued by Nanophase Technologies Corporation, a Delaware corporation (the "Company"), whose principal executive offices are located at 1319 Marquette Drive, Romeoville, IL 60446. Item 2. Identity and Background (a) The statement is filed by Grace Brothers, Ltd., an Illinois limited partnership ("Grace"), Grace Investments, Ltd., an Illinois limited partnership ("Grace Investments"), Bradford T. Whitmore ("Whitmore") and Spurgeon Corporation ("Spurgeon") (the "Filers"). Whitmore and Spurgeon are the general partners of Grace and Grace Investments. (b) The business address of Grace, Grace Investments, and Whitmore is 1560 Sherman Avenue, Suite 900, Evanston, Illinois 60201. The business address of Spurgeon is 290 South County Farm Road, Third Floor, Wheaton, Illinois 60187. (c) The principal business of Grace and Grace Investments is to purchase, sell, invest, and trade in securities. Whitmore's principal occupation is that of being a general partner of Grace. The principal business of Spurgeon is that of being a general partner of Grace. The names, business addresses, and present principal occupation or employment of each director and executive officer of Spurgeon are set forth in Exhibit A hereto. (d) None of the persons referred to in this Item 2 has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) None of the persons referred to in this Item 2 has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to , federal or state securities laws or finding any violation with respect to such laws. (f) Grace and Grace Investments is a Illinois limited partnership and Spurgeon is an Illinois corporation. Whitmore is a citizen of the United States. 7 Page 7 of 8 Pages Item 3. Source and Amount of Funds The Common Stock beneficially owned by the Filers was purchased with working capital and partnership funds. Item 4. Purpose of Transaction. The Filers previously have reported their Common Stock ownership on Schedule 13G, and are making this filing on Schedule 13D to reflect Grace Brothers' September 8, 2003 purchase from the Company of an additional 453,001 shares of Common Stock and a warrant to purchase an additional 453,001 shares of Common Stock. The purpose of this most recent acqusition of shares of Common Stock is for investment; the acquisition was made in the ordinary course of Grace's business and was not made for the purpose of acquiring control of the Company. The Filers have no plans or proposals which relate to, or would result in, any of the matters referred to in Paragraphs (a) through (j), inclusive, of Item 4 of the Schedule 13D. The Filers may, at any time and from time to time, review or reconsider their investment in the Company and formulate plans or proposals with respect thereto, but have no present intention of doing so. Item 5. Interest in Securities of the Issuer (a) As of the date of this filing, if Grace exercised its warrants, it would beneficially own 2,985,195 shares of Common Stock, representing approximately 19.0% of the outstanding shares of Common Stock. Grace Investments beneficially owns 1,069,750 shares of Common Stock, representing approximately 6.8% of the outstanding shares of Common Stock. As general partner of Grace and Grace Investments, if Grace exercised its warrants, Spurgeon may be deemed the beneficial owner of 4,054,945 shares of Common Stock, or 25.8% of the outstanding shares of Common Stock, although they otherwise disclaim beneficial ownership. As general partner of Grace and Grace Investments, if Grace exercised its warrants, Whitmore may be deemed the beneficial owner of 4,054,945 shares of Common Stock, and 472,812 shares of Common Stock as direct beneficial owner, or 28.8% of the outstanding shares of Common Stock. 8 Page 8 of 8 Pages (b) Grace: shared voting power (with Whitmore and Spurgeon) 2,532,194 Shares of Common Stock; and Warrants expiring on September 8, 2004 ($4.415 strike price) presently exercisable for 453,001 shares of Common Stock Grace Investments: shared voting power (with Whitmore and Spurgeon) 1,069,750 Shares of Common Stock Whitmore: shared voting power (with Grace, Grace Investments and Spurgeon) 3,601,944 Shares of Common Stock; and Warrants expiring on September 8, 2004 ($4.415 strike price) presently exercisable for 453,001 shares of Common Stock and sole voting power 472,812 Shares of Common Stock Spurgeon: shared voting power (with Grace, Grace Investments, and Whitmore) 3,601,944 Shares of Common Stock; and Warrants expiring on September 8, 2004 ($4.415 strike price) presently exercisable for 453,001 shares of Common Stock (c) The Shares were purchased from the Company. Transactions in the Company's Common Stock effected by the Filer during the past 60 days are set forth in Schedule A. (d) No person other than the Filers is known to have the right to receive, or the power to direct the receipt of, dividends from or the proceeds from the sale of the Shares. (e) N/A Item 6. Contracts, Arrangements, Understandings or Relationships with respect to Securities of the Issuer Except as described herein, there are no contracts, arrangements, understandings or other relationships with respect to any securities of the Company. Item 7. Items to be Filed as Exhibits Exhibit A - Directors and Executive Officers of Spurgeon Corporation SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, the undersigned certifies that the information set forth in this Statement with respect to it is true, complete and correct. Dated: September 17, 2003 Grace Brothers, Ltd. By: /s/ Bradford T. Whitmore Name: Bradford T. Whitmore Its: General Partner 9 Page 9 of 9 Pages SCHEDULE A TRADE ACTIVITY FOR NANOPHASE TECHNOLOGIES CORPORATION EFFECTED BY GRACE BROTHERS, LTD. FOR THE PREVIOUS 60 DAYS (PURCHASED FROM THE COMPANY). Amount of Price per Date Security Shares Purchased Share 09/08/2004 Common Stock 453,001 $4.415 Exhibit A Director and Officers of Spurgeon Corporation Judith M. Van Kampen Box 770 101 Washington St. Grand Haven, MI 49417-0070 Director of Spurgeon. Trustee of Judith M. Van Kampen Trust which is Manager of Van Kampen Asset Management Company, LLC. Karla M. Van Kampen-Pierre Box 770 101 Washington St. Grand Haven, MI 49417-0070 Director of Spurgeon. Trustee of Judith M. Van Kampen Trust which is Manager of Van Kampen Asset Management Company, LLC. David Wisen Box 770 101 Washington St. Grand Haven, MI 49417-0070 Director and President of Spurgeon. President of Van Kampen Asset Management Company, LLC. David J. Allen 290 South County Farm Road Third Floor Wheaton, IL 60187 Vice President and Secretary of Spurgeon. Trustee of Judith M. Van Kampen Trust which is Manager of Van Kampen Asset Management Company, LLC. Senior Vice President and General counsel of Van Kampen Asset Management Company, LLC. Jerald A. Trannel 290 South County Farm Road Third Floor Wheaton, IL 60187 Vice President and Treasurer of Spurgeon. Controller of Grace Brothers, Ltd. and Senior Vice President and Treasurer of Van Kampen Asset Management Company, LLC. All are United States Citizens. The Business address of Van Kampen Asset Management Company, LLC is 290 South County Farm Road, Third Floor, Wheaton, IL 60187. The principal business of Van Kampen Asset Management Company, LLC is investment and asset management.