<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1)*
Interstate National Dealer Services, Inc.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
46102P104
-----------
(CUSIP Number)
*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).
SEC 1745 (2/92) Page 1 of 7 pages
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 46102P104 13G PAGE 2 OF 7 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oberweis Asset Management, Inc.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Illinois
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
194,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
194,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
194,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable [_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
4.5%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 46102P104 13G PAGE 3 OF 7 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
James D. Oberweis
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
U.S.A.
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
194,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
194,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
194,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable [_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
4.5%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Item 1(a) Name of Issuer:
Interstate National Dealer Services, Inc.
Item 1(b) Address of Issuer's Principal Executive Offices:
333 Earle Ovington Boulevard
Mitchel Field, NY 11553-9340
Item 2(a) Name of Person Filing:
Oberweis Asset Management, Inc. ("OAM");
James D. Oberweis ("Mr. Oberweis")
Item 2(b) Address of Principal Business Office:
OAM, and Mr. Oberweis are both located at:
951 Ice Cream Drive, Suite 200
North Aurora, Illinois 60542
Item 2(c) Citizenship:
OAM is an Illinois Corporation.
Mr. Oberweis is a U.S. citizen.
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
46102P104
Item 3 Type of Person:
(e) OAM is an Investment Advisor registered under section 203 of the
Investment Advisors Act of 1940. Mr. Oberweis is the principal
stockholder of OAM.
Page 4 of 7 pages
<PAGE>
Item 4 Ownership (at December 31, 1997):
(a) Amount owned "beneficially" within the meaning of rule 13d-3:
194,000 shares
(b) Percent of class:
4.5%
(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: 194,000
(iii) sole power to dispose or to direct the disposition of: none
(iv) shared power to dispose or to direct disposition of: 194,000
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 equity securities,
check the following (X).
Item 6 Ownership of More than Five Percent on Behalf of Another Person:
The shares reported herein have been acquired on behalf of
discretionary clients of OAM. Persons other than OAM are entitled
to receive all dividends from, and proceeds from the sale of,
those shares.
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
Page 5 of 7 pages
<PAGE>
Item 10 Certification:
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the ordinary
course of business and were not acquired for the purpose of and do not
have the effect of changing or influencing the control of the issuer of
such securities and were not acquired in connection with or as a
participant in any transaction having such purpose or effect.
Page 6 of 7 pages
<PAGE>
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: February 11, 1998
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
-----------------------
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.
/s/ James D. Oberweis
---------------------
James D. Oberweis
Page 7 of 7 pages
