SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G/A
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO.4)
Cyberoptics Corporation
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(NAME OF ISSUER)
COMMON STOCK, NO PAR VALUE PER SHARE
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(TITLE OF CLASS OF SECURITIES)
232517102
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(CUSIP NUMBER)
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).
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1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
EQSF ADVISERS, INC.
(EIN 13-3354359)
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [ ]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
NEW YORK CORPORATION
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5 SOLE VOTING POWER
645,700
NUMBER OF ---------------------------------------------
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SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY NONE
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---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 779,400
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---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
NONE
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
779,400
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES*
[ ]
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
9.64%
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12 TYPE OF REPORTING PERSON*
IA
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1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
M.J. WHITMAN ADVISERS, INC.
(EIN 13-3686379)
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [ ]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
NEW YORK CORPORATION
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5 SOLE VOTING POWER
11,750
NUMBER OF ---------------------------------------------
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY NONE
---------------------------------------------
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 11,750
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---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
NONE
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- --------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
11,750
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- --------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES*
[ ]
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.15%
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12 TYPE OF REPORTING PERSON*
IA
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1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
MARTIN J. WHITMAN
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [ ]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
USA
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5 SOLE VOTING POWER
NUMBER OF NONE (SEE ITEM 4)
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6 SHARED VOTING POWER
SHARES
NONE
BENEFICIALLY
OWNED BY
---------------------------------------------
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING NONE (SEE ITEM 4)
---------------------------------------------
---------------------------------------------
PERSON WITH 8 SHARED DISPOSITIVE POWER
NONE
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
-0- (SEE ITEM 4)
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- --------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES*
[ ]
- --------------------------------------------------------------
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
-0-
- --------------------------------------------------------------
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12 TYPE OF REPORTING PERSON*
IN
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ITEM 1.
(A) NAME OF ISSUER:
Cyberoptics Corporation (the "Issuer").
(B) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES OR,IF NONE, RESIDENCE:
5900 Golden Hills Drive, Minneapolis, MN 55416
ITEM 2.
(A) NAME OF PERSON FILING:
This schedule is being jointly filed by EQSF
Advisers, Inc. ("EQSF"), M.J. Whitman Advisers, Inc.
("MJWA") and Martin J. Whitman, the Chief Executive
Officer of EQSF and Chief Investment Officer of MJWA and
controlling person of EQSF and MJWA. (EQSF, MJWA and
Martin J. Whitman are sometimes collectively referred
to hereinafter as "Filer"). Attached hereto as an
exhibit is a copy of the joint Schedule 13G filing
agreement among the reporting persons.
(B) ADDRESS OF PRINCIPAL BUSINESS OFFICE:
The address of the principal executive office of
EQSF, MJWA and Mr. Whitman is: 767 Third Avenue, New
York, New York 10017-2023.
(C) CITIZENSHIP:
The citizenship or place of organization of each of the reporting
persons is as follows:
EQSF
New York State Corporation.
MJWA
New York State Corporation.
MARTIN J. WHITMAN
United States Citizen.
(D) TITLE OF CLASS OF SECURITIES:
Common Stock, no par value per share.
(E) CUSIP NUMBER:
232517102
ITEM 3. IF THIS STATEMENT IS BEING FILED PURSUANT TO RULES 13D-1(B), OR
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:
(E) Investment Adviser registered under section 203 OF THE INVESTMENT
ADVISERS ACT OF 1940 (EQSF and MJWA).
ITEM 4. OWNERSHIP.
(a) & (b) EQSF beneficially owns 779,400 shares, or 9.64% of the class
of securities of the issuer. MJWA beneficially owns 11,750 shares, or 0.15% of
the class of securities of the issuer.
(c) (i) EQSF: 645,700
MJWA: 11,750
(ii) Not applicable.
(iii) EQSF: 779,400
MJWA: 11,750
(iv) Not applicable.
Mr. Whitman disclaims beneficial ownership of all
such shares.
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.
Sun America Small Cap Style Select Fund, an investment company
registered under the Investment Company Act of 1940, has the right to
receive dividends from, and the proceeds from the sale of, 72,400 of the
shares reported by EQSF, Third Avenue Small-Cap Value Fund, an investment
company registered under the Investment Company Act of 1940, has the
right to receive dividends from, and the proceeds from the sale of,
305,200 of the shares reported by EQSF, Third Avenue Value Portfolio
of the WRL Series Fund, an investment company registered under the
Investment Company Act of 1940, has the right to receive dividends from,
and the proceeds from the sale of, 99,000 of the shares reported by EQSF,
American Express Partners Small-Cap Value Portfolio, an investment
company registered under the Investment Company Act of 1940, has the
right to receive dividends from, and the proceeds from the sale of
128,500 of the shares reported by EQSF, Third Avenue Variable Portfolio
of the Third Avenue Variable Series Trust, an investment company
registered under the Investment Company Act of 1940, has the right
to receive dividends from, and the proceeds from the sale of 154,100
of the shares reported by EQSF, American Express Variable Annuity, an
investment company registered under the Investment Company Act of 1940,
has the right to receive dividends from, and the proceeds from the sale
of 5,200 of the shares reported by EQSF, and Integrity Life/Legends Third
Avenue Value Fund, an investment company registered under the Investment
Company Act of 1940, has the right to receive dividends from, and the
proceeds from the sale of 15,000 of the shares reported by EQSF. Various
clients for whom MJWA acts as investment advisor have the right to
receive dividends from, and the proceeds of the sale of, the shares
reported by MJWA.
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 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 purposes or effect.
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.
January 15, 2002
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(Date)
EQSF ADVISERS, INC.
BY:/S/ MARTIN J. WHITMAN
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Martin J. Whitman
Chairman and Chief Executive Officer
M.J. WHITMAN ADVISERS, INC.
BY:/S/ MARTIN J. WHITMAN
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Martin J. Whitman
Chairman and Chief Investment Officer
/S/ MARTIN J. WHITMAN
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Martin J. Whitman, President