SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* KKR Millennium GP LLC (Last) (First) (Middle) C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 (Street) NEW YORK NY 10019 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 08/12/2005	3. Issuer Name and Ticker or Trading Symbol Rockwood Holdings, Inc. [ ROC ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	4,445,896	I	See Notes ( 1 ) ( 6 ) ( 7 ) ( 8 ) ( 9 )
Common Stock, par value $0.01 per share	19,138,916	I	See Notes ( 2 ) ( 6 ) ( 7 ) ( 8 ) ( 9 )
Common Stock, par value $0.01 per share	164,282	I	See Notes ( 3 ) ( 6 ) ( 7 ) ( 8 ) ( 9 )
Common Stock, par value $0.01 per share	398,727	I	See Notes ( 4 ) ( 6 ) ( 7 ) ( 8 ) ( 9 )
Common Stock, par value $0.01 per share	13,337,689	I	See Notes ( 5 ) ( 6 ) ( 7 ) ( 8 ) ( 9 )
Series A Participating Preferred Stock, par value $0.01 p/sh	25,000	I	See Notes ( 1 ) ( 6 ) ( 7 ) ( 8 ) ( 9 ) ( 10 )

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants to purchase Common Stock	( 11 )	07/23/2013	Common Stock	958,315	14.61	I	See Notes ( 1 ) ( 6 ) ( 7 ) ( 8 ) ( 9 )

1. Name and Address of Reporting Person* KKR Millennium GP LLC (Last) (First) (Middle) C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 (Street) NEW YORK NY 10019 (City) (State) (Zip)

1. Name and Address of Reporting Person* KKR Millennium Fund L.P. (Last) (First) (Middle) C/O KKR & CO. 9 WEST 57TH ST - 41ST F (Street) NEW YORK NY 10019 (City) (State) (Zip)

1. Name and Address of Reporting Person* KKR 1996 GP LLC (Last) (First) (Middle) 9 WEST 57TH STREET STE 4200 (Street) NEW YORK NY 10019 (City) (State) (Zip)

1. Name and Address of Reporting Person* KKR ASSOCIATES 1996 L P (Last) (First) (Middle) C/O KKR & CO 9 WEST 57TH ST 41ST FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip)

1. Name and Address of Reporting Person* KKR 1996 FUND L P (Last) (First) (Middle) C/O KKR & CO 9 WEST 57TH ST 41ST FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip)

1. Name and Address of Reporting Person* KRAVIS HENRY R (Last) (First) (Middle) C/O KOHLBERG KRAVIS ROBERTS & CO 9 WEST 57TH ST (Street) NEW YORK NY 10019 (City) (State) (Zip)

1. Name and Address of Reporting Person* ROBERTS GEORGE R (Last) (First) (Middle) 2800 SAND HILL ROAD (Street) MENLO PARK CA 94025 (City) (State) (Zip)

1. Name and Address of Reporting Person* RAETHER PAUL E (Last) (First) (Middle) C/O IDEX CORP 630 DUNDEE ROAD (Street) NORTHBROOK IL 60062 (City) (State) (Zip)

1. Name and Address of Reporting Person* MICHELSON MICHAEL W (Last) (First) (Middle) 2800 SAND HILL ROAD SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

Explanation of Responses:

1. These securities are held of record by KKR Millennium Fund L.P. As the sole general partner of KKR Millennium Fund L.P., KKR Associates Millennium L.P., may be deemed to be the beneficial owner of such securities held by KKR Millennium Fund L.P. As the sole general partner of KKR Associates Millennium L.P., KKR Millennium GP LLC also may be deemed to be the beneficial owner of such securities held by KKR Millennium Fund L.P.

2. These securities are held of record by KKR 1996 Fund L.P. As the sole general partner of KKR 1996 Fund L.P., KKR Associates 1996 L.P., may be deemed to be the beneficial owner of such securities held by KKR 1996 Fund L.P. As the sole general partner of KKR Associates 1996 L.P., KKR 1996 GP LLC also may be deemed to be the beneficial owner of such securities held by KKR 1996 Fund L.P.

3. These securities are held of record by KKR Partners II, L.P. As the general partners of KKR Partners II, L.P., KKR Associates (Strata) L.P. and KKR Associates, L.P., may be deemed to be the beneficial owners of such securities held by KKR Partners II, L.P. As the sole general partner of KKR Associates (Strata) L.P., Strata L.L.C. also may be deemed to be the beneficial owner of such securities held by KKR Partners II, L.P.

4. These securities are held of record by KKR Partners III, L.P. (Series F). As the sole general partner of KKR Partners III, L.P., KKR III GP LLC may be deemed to be the beneficial owner of such securities held by KKR Partners III, L.P. (Series F).

5. The securities are held of record by KKR European Fund, Limited Partnership. As the sole general partner of KKR European Fund, Limited Partnership, KKR Associates Europe, Limited Partnership may be deemed to be the beneficial owner of such securities held by KKR European Fund, Limited Partnership. As the sole general partner of KKR Associates Europe, Limited Partnership, KKR Europe Limited also may be deemed to be the beneficial owner of such securities held by KKR European Fund, Limited Partnership.

6. As members of KKR Millennium GP LLC, KKR 1996 GP LLC and KKR III GP LLC, Messrs. Henry R. Kravis, George R. Roberts, Paul E. Raether, Michael W. Michelson, James H. Greene, Edward A. Gilhuly, Perry Golkin, Scott M. Stuart, Johannes Huth, Alexander Navab and Todd A. Fisher may also be deemed to be beneficial owners of the securities held by KKR Millennium Fund L.P., KKR 1996 Fund L.P. and KKR Partners III, L.P. (Series F), respectively; as members of Strata. L.L.C. and general partners of KKR Associates, L.P., Messrs. Kravis, Roberts, Raether, Michelson, Greene, Gilhuly, Golkin and Stuart also may be deemed to be beneficial owners of the securities held by KKR Partners II, L.P.; (continued in footnote 7)

7. (continued from footnote 6); as members of KKR Millennium GP LLC and KKR III GP LLC, Messrs. Marc S. Lipschultz, Jacques Garaialde, Reinhard Gorenflos, Scott C. Nuttall and Michael M. Calbert may also be deemed to be beneficial owners of the securities held by KKR Millennium Fund L.P. and KKR Partners III, L.P., respectively; and as directors of KKR Europe Limited, Messrs. Kravis, Roberts, Raether, Michelson, Greene, Gilhuly, Golkin, Stuart, Huth, Navab, Fisher, Lipschultz and Garaialde also may be deemed to be beneficial owners of the securities held by KKR European Fund, Limited Partnership. Each Reporting Person other than the record holders disclaims beneficial ownership of the securities that may be deemed to be beneficially owned by such Reporting Person, except to the extent of such Reporting Person's own pecuniary interest therein.

8. Due to the limitations of Form 3, certain of the persons described as beneficial owners or deemed beneficial owners of the securities reported on this Form 3 are filing as reporting persons on separate Forms 3.

9. The filing of this statement shall not be deemed an admission that, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise, the Reporting Person is the beneficial owner of any equity securities covered by this statement.

10. The Issuer intends to redeem all of the outstanding Series A Participating Preferred Stock with a portion of the net proceeds from its initial public offering.

11. The Warrants to purchase Common Stock are exercisable at any time and expire on July 23, 2013.

Remarks:

KKR Millennium GP LLC and certain of its affiliates constitute a group with DLJ Merchant Banking Partners for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended. Exhibit 24 - Powers of Attorney Exhibit 99 - Joint Filer Information

	/s/ William J. Janetschek, Attorney-in-fact for Reporting Persons	08/12/2005
	** Signature of Reporting Person	Date
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