UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A (Amendment No. 3) Under the Securities Exchange Act of 1934 (Rule 13d-102) Information to be Included in Statements Filed Pursuant to Rule 13d-1(b)(c), and (d) and Amendments thereto Filed Pursuant to Rule 13d-2(b) NATCO GROUP, INC. ----------------------------------------------------- (Name of Issuer) Common Stock, par value $0.01 per share ----------------------------------------------------- (Title of Class of Securities) 63227W 20 3 -------------------------------------------- (CUSIP Number) December 31, 2006 ----------------------------------------------------- (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). -------------------------------------------------------------------------------- 1. Names of Reporting Persons. 1. I.R.S. Identification Nos. of above persons (entities only). Capricorn Holdings, Inc. -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] . (b) [X] -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Connecticut -------------------------------------------------------------------------------- Number of Shares 5. Sole Voting Power 0 Beneficially Owned --------------------------------------------------- by Each Reporting 6. Shared Voting Power 710,285 Person With: --------------------------------------------------- 7. Sole Dispositive Power 0 --------------------------------------------------- 8. Shared Dispositive Power 710,285 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 710,285 -------------------------------------------------------------------------------- 10. Check box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 4.1% -------------------------------------------------------------------------------- 12. Type of Reporting Person (See Instructions) CO -------------------------------------------------------------------------------- 2 -------------------------------------------------------------------------------- 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Winokur Family Investors, LLC -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] . (b) [X] -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Connecticut -------------------------------------------------------------------------------- Number of Shares 5. Sole Voting Power 0 Beneficially Owned --------------------------------------------------- by Each Reporting 6. Shared Voting Power 180,287 Person With: --------------------------------------------------- 7. Sole Dispositive Power 0 --------------------------------------------------- 8. Shared Dispositive Power 180,287 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 180,287 -------------------------------------------------------------------------------- 10. Check box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 1.04% -------------------------------------------------------------------------------- 12. Type of Reporting Person (See Instructions) CO -------------------------------------------------------------------------------- 3 -------------------------------------------------------------------------------- 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). HERBERT S. WINOKUR, JR. -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] . (b) [X] -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares 5. Sole Voting Power 919,500 Beneficially Owned --------------------------------------------------- by Each Reporting 6. Shared Voting Power 0 Person With: --------------------------------------------------- 7. Sole Dispositive Power 919,500 --------------------------------------------------- 8. Shared Dispositive Power 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 919,500 -------------------------------------------------------------------------------- 10. Check box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 5.30% -------------------------------------------------------------------------------- 12. Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- 4 1. (a) Name of Issuer: -------------- NATCO Group, Inc. Address of Issuer's Principal Executive Offices: ----------------------------------------------- 2950 North Loop West 7th Floor Houston, TX 77092 2. (a) Name of Person Filing: --------------------- Capricorn Holdings, Inc. Winokur Family Investors, LLC Herbert S. Winokur, Jr. (b) Address of Principal Business Office or, if none, Residence: ----------------------------------------------------------- The principal business office of all of the filing parties is 30 East Elm Street, Greenwich, CT 06830. (c) Citizenship: ----------- Capricorn Holdings, Inc. is a Delaware corporation. Winokur Family Investors, LLC is a Connecticut limited liability company. Herbert S. Winokur, Jr. is a citizen of the United States. (d) Title of Class of Securities (of Issuer): ---------------------------------------- Common Stock, par value $0.01 per share. (e) CUSIP Number: ------------ 63227W 20 3 3. If this statement is filed pursuant to ss.ss. 240. 13d-1(b) or 240. 13d-2(b) or (c), check whether the person filing is a: NOT APPLICABLE 4. Ownership (a) Amount Beneficially Owned: 919,500 (See Exhibit 1) ------------------------- (b) Percent of Class: ---------------- The 919,500 shares beneficially owned by Mr. Winokur represent 5.30% of the outstanding shares of Common Stock. Percentage ownership of the Common Stock is based on 17,323,147 shares of Common Stock, which represents the number of outstanding shares of Common Stock as of September 30, 2006, as stated on the Form 10-Q of NATCO Group Inc. for the period ended September 30, 2006 5 (c) Number of shares as to which such person has: -------------------------------------------- (i) Sole power to vote or direct the vote: 919,500 (ii) Shared power to vote or direct the vote: 0 (iii) Sole power to dispose or to direct the disposition of: 919,500 (iv) Shared power to dispose or direct the disposition of: 0 5. Ownership of Five Percent or Less of a Class: See Exhibit 1. 6. Ownership of More than Five Percent on Behalf of Another Person: NOT APPLICABLE 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company: See Exhibit 1. 8. Identification and Classification of Members of the Group: NOT APPLICABLE 9. Notice of Dissolution of Group: NOT APPLICABLE 10. Certification: NOT APPLICABLE 6 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. Date: January 18, 2007 CAPRICORN HOLDINGS, INC. By: /s/ HERBERT S. WINOKUR JR. ------------------------------------- Name: Herbert S. Winokur, Jr. Title: President WINOKUR FAMILY INVESTORS, LLC By: /s/ HERBERT S. WINOKUR JR. ------------------------------------- Name: Herbert S. Winokur, Jr. Title: Managing Member By: /s/ HERBERT S. WINOKUR JR. ------------------------------------- Herbert S. Winokur, Jr. 7 EXHIBIT 1 --------- This Schedule 13G (Amendment No. 3) is being filed by Capricorn Holdings, Inc., a Delaware corporation ("Holdings Inc."), Winokur Family Investors, LLC ("WFI"), a Connecticut limited liability company and Herbert S. Winokur, Jr. ("Mr. Winokur") (collectively, the "Filing Parties"). Of the 919,500 shares reported as beneficially owned by Mr. Winokur and the other Filing Parties, 710,285 shares are owned directly by Holdings Inc., 180,287 shares are directly owned by WFI, of which Mr. Winokur is an owner, and 28,928 shares are owned directly by Mr. Winokur. As the manager of WFI and the sole stockholder of Holdings Inc., Mr. Winokur may be deemed to control each of them and, in such capacities, possesses voting and dispositive power over the shares held by WFI and Holdings Inc. Accordingly, Mr. Winokur may be deemed the beneficial owner of all of the shares reported as beneficially owned by the Filing Parties. A joint filing agreement among the Filing Parties is filed as Exhibit 2. 8 EXHIBIT 2 --------- JOINT FILING AGREEMENT AMONG CAPRICORN HOLDINGS, INC., WINOKUR FAMILY INVESTORS, LLC AND HERBERT S. WINOKUR, JR. The undersigned hereby agree that the Schedule 13G/A with respect to the common stock without par value of NATCO Group, Inc. (the "Schedule 13G/A") is, and any amendments thereto executed by each of us shall be, filed on behalf of us pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended. Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13G/A and any amendments thereto, and for the completeness and accuracy of the information concerning itself contained therein. Dated: January 18, 2007 CAPRICORN HOLDINGS, INC. By: /s/ HERBERT S. WINOKUR JR. ------------------------------------- Name: Herbert S. Winokur, Jr. Title: President WINOKUR FAMILY INVESTORS, LLC By: /s/ HERBERT S. WINOKUR JR. ------------------------------------- Name: Herbert S. Winokur, Jr. Title: Managing Member By: /s/ HERBERT S. WINOKUR JR. ------------------------------------- Herbert S. Winokur, Jr. 9