SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
LAMB PARTNERS

(Last) (First) (Middle)
900 NORTH MICHIGAN AVE

(Street)
CHICAGO IL 60611

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
RIVIERA HOLDINGS CORP [ RIV ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/08/2006
4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, $0.001 par value per share 08/08/2006 J(2)(3)(4)(5) 75,300 A $0(2)(3)(4)(5) 702,711(2)(3)(4)(5) I See footnotes (1), (2), (3), (4), (5), (6)(1)(2)(3)(4)(5)(6)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
LAMB PARTNERS

(Last) (First) (Middle)
900 NORTH MICHIGAN AVE

(Street)
CHICAGO IL 60611

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
BLUHM NEIL

(Last) (First) (Middle)
900 NORTH MICHIGAN AVENUE
SUITE 1900

(Street)
CHICAGO IL 60611

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
LAMB LLC

(Last) (First) (Middle)
0223 PLACER LANE
PO BOX 2147

(Street)
ASPEN CO 81612

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
LAMB INVESTORS INC

(Last) (First) (Middle)
900 NORTH MICHIGAN AVENUE
SUITE 1900

(Street)
CHICAGO IL 60611

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. This is a joint filing by LAMB Partners, LLC, ("LAMB Partners"), LAMB Investors, Inc. ("LAMB Investors"), LAMB, LLC and Neil Bluhm (collectively, the "Reporting Persons"). (continued in footnote 2)
2. (continued from footnote 1) ISLE Investors, LLC ("ISLE") directly holds 75,300 shares of common stock, par value $0.001 per share (the "Common Stock"), of Riviera Holdings Corp., as reported on Form 3 filed August 23, 2006. LAMB Partners, as a member of ISLE that holds 62.6% of the equity of ISLE, may be deemed to have beneficial ownership of the foregoing shares of Common Stock, and together with the shares of Common Stock beneficially owned as a member of High Desert Gaming, LLC ("HDG"), as reported on Form 3 filed August 23, 2006, may be deemed to beneficially own a total of 702,741 shares of Common Stock. (continued in footnote 3)
3. (continued from footnote 2) LAMB Investors, as a partner in LAMB Partners that holds 1.1% of the equity of LAMB Partners, also may be deemed to have beneficial ownership of the foregoing shares of Common Stock, and together with the shares of Common Stock beneficially owned through LAMB Partners' interest in HDG, as reported on Form 3 filed August 23, 2006 and updated by this Form 4, may be deemed to beneficially own 702,741 shares of Common Stock. (continued in footnote 4)
4. (continued from footnote 3) LAMB, LLC, as a partner that holds 98.9% of the equity of LAMB Partners and as the owner of all the equity interest in LAMB Investors, also may be deemed to have beneficial ownership of the foregoing shares of Common Stock, and together with the shares of Common Stock beneficially owned through LAMB Partners and LAMB Investors' interest in HDG, as reported on Form 3 filed August 23, 2006 and updated by this Form 4, may be deemed to beneficially own 702,741 shares of Common Stock. (continued in footnote 5)
5. (continued from footnote 4) Neil Bluhm, as a member of ISLE that holds 21.5% of the equity of ISLE, also may be deemed to have beneficial ownership of the foregoing shares of Common Stock, and together with the shares of Common Stock beneficially owned as a manager and member of HDG who holds 1% of the equity of HDG, and through LAMB Investor's and LAMB, LCC's interests in HDG by virtue of being the president of LAMB Investors and a manager and member of LAMB, LLC who holds 1.1% of the equity of LAMB, LLC, each as reported on Form 3 filed August 23, 2006 and updated by this Form 4, may be deemed to beneficially own 702,741 shares of Common Stock.
6. LAMB Partners is the designated filer. The Reporting Persons are filing this joint Form 4 because they may be regarded as part of a group. However, each Reporting Person disclaims beneficial ownership of the shares owned by the other Reporting Persons and disclaims membership in a group, and this filing shall not constitute an acknowledgement that the Reporting Persons are part of a group.
/s/ LAMB Partners, LLC by LAMB, LLC, Its Partner, by Neil G. Bluhm, Manager 03/12/2007
/s/ LAMB Investors, Inc. by Neil G. Bluhm, President 03/12/2007
/s/ LAMB, LLC by Neil G. Bluhm, Manager 03/12/2007
/s/ Neil G. Bluhm 03/12/2007
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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