UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. ______)*
Riviera Tool Company
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
769648106
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(CUSIP Number)
August 31, 2003
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(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).
Page 1 of 9 pages
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CUSIP No. 769648106 13G Page 2 of 9 Pages
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1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Oberweis Asset Management, Inc.
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
Not Applicable (a) [_]
(b) [_]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
Illinois
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5 SOLE VOTING POWER
NUMBER OF None
SHARES --------------------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
352,300
OWNED BY
--------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING None
PERSON --------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
WITH
352,300
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
352,300
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10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS)
[_]
Not Applicable
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
10.4%
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12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IA
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CUSIP No. 769648106 13G Page 3 of 9 Pages
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1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
James D. Oberweis
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
Not Applicable (a) [_]
(b) [_]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S.A.
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5 SOLE VOTING POWER
NUMBER OF None
SHARES --------------------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
352,300
OWNED BY
--------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING None
PERSON --------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
WITH
352,300
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
352,300
--------------------------------------------------------------------------------
10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS)
[_]
Not Applicable
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
10.4%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
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CUSIP No. 769648106 13G Page 4 of 9 Pages
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1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
James W. Oberweis
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
Not Applicable (a) [_]
(b) [_]
--------------------------------------------------------------------------------
3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S.A.
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5 SOLE VOTING POWER
NUMBER OF None
SHARES --------------------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
352,300
OWNED BY
--------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING None
PERSON --------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
WITH
352,300
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
352,300
--------------------------------------------------------------------------------
10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS)
[_]
Not Applicable
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
10.4%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
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Item 1(a) Name of Issuer:
Riviera Tool Company
Item 1(b) Address of Issuer's Principal Executive Offices:
5460 Executive Parkway S.E.
Grand Rapids, Michigan 49512
Item 2(a) Name of Person Filing:
Oberweis Asset Management, Inc. ("OAM")
James D. Oberweis
James W. Oberweis
Item 2(b) Address of Principal Business Office or, if none, Residence:
OAM, James D. Oberweis and James W. Oberweis are located at:
951 Ice Cream Drive, Suite 200
North Aurora, IL 60542
Item 2(c) Citizenship:
OAM is an Illinois Corporation.
James D. Oberweis and James W. Oberweis are U.S. citizens.
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
769648106
Item 3 Type of Person:
(e) OAM is an investment adviser in accordance with
(S)240.13d-1(b)(1)(ii)(E). James D. Oberweis and James
W. Oberweis are the principal stockholders of OAM.
Item 4 Ownership (at August 31, 2003):
(a) Amount owned "beneficially" within the meaning of rule
13d-3:
352,300 shares
(b) Percent of class:
10.4% (based on 3,379,609 shares outstanding on July
14, 2003)
Page 5 of 9 pages
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
none
(ii) shared power to vote or to direct the
vote: 352,300
(iii) sole power to dispose or to direct the
disposition of: none
(iv) shared power to dispose or to direct
disposition of: 352,300
Item 5 Ownership of Five Percent or Less of a Class:
If this statement is being filed to report the fact that as
of the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following: [_]
Item 6 Ownership of More than Five Percent on Behalf of Another Person:
Not Applicable
Item 7 Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on by the Parent Holding
Company:
Not Applicable
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 I certify that, to the best
of my 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.
Page 6 of 9 pages
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: September 10, 2003
The undersigned corporation, on the date above written, agrees
and consents to the joint filing on its behalf of this Schedule
13G in connection with its beneficial ownership of the security
reported herein.
OBERWEIS ASSET MANAGEMENT, INC.
By: /s/ Patrick B. Joyce
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Patrick B. Joyce
Executive Vice President
The undersigned individual, on the date above written, agrees and
consents to the joint filing on his behalf of this Schedule 13G
in connection with his beneficial ownership of the security
reported herein.
By: /s/ James D. Oberweis
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James D. Oberweis
The undersigned individual, on the date above written, agrees and
consents to the joint filing on his behalf of this Schedule 13G
in connection with his beneficial ownership of the security
reported herein.
By: /s/ James W. Oberweis
------------------------------------
James W. Oberweis
Page 7 of 9 pages
Exhibit Index
Exhibit 1 Joint Filing Agreement dated as of September 10, 2003
between Oberweis Asset Management, Inc., James D. Oberweis
and James W. Oberweis
Page 8 of 9 Pages