<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 6)*
Bio-Rad Laboratories, Inc.
------------------------------------------------------------
(Name of Issuer)
Class B Common Stock, Par Value $1 per share
------------------------------------------------------------
(Title of Class of Securities)
090572-21-8
------------------------------------------------------------
(CUSIP Number)
David Schwartz, 1000 Alfred Nobel Drive
Hercules, CA 94547
(510) 724-7000
------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized
to Receive Notices and Communications)
February 28, 1997 (Revised 5/20/97)**
------------------------------------------------------------
(Date of Event which Requires Filing of this Statement)
If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the following
box / /.
Check the following box if a fee is being paid with the statement / /. (A
fee is not required only if the reporting person: (1) has a previous statement
on file reporting beneficial ownership of more than five percent of the class
of securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)
Note: Six copies of this statement, including all exhibits, should be filed
with the Commission. See Rule 13d-1(a) for other parties to whom copies are
to be sent.
* 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 disclosures provided in a prior cover page.
The information required on 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).
**See page 2 and items 5 and 6 below, which were revised due to calculation
errors.
1 of 5
<PAGE>
SCHEDULE 13D
CUSIP No. 090572-21-8 Page 2 of 5 Pages
----------------------------------------------------------------------------
(1) NAME OF REPORTING PERSON
SS OR IRS IDENTIFICATION NO. OF ABOVE PERSON
David Schwartz, ###-##-####
----------------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / /
Alice N. Schwartz, as spouse of David Schwartz, has a one-half
community property interest in 1,628,843 shares of this class. (b) / /
---------
----------------------------------------------------------------------------
(3) SEC USE ONLY
----------------------------------------------------------------------------
(4) SOURCE OF FUNDS*
PF
----------------------------------------------------------------------------
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) or 2(E) / /
----------------------------------------------------------------------------
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
United States Citizen
----------------------------------------------------------------------------
(7) SOLE VOTING POWER
NUMBER OF
1,640,176
---------
SHARES -------------------------------------------------------
(8) SHARED VOTING POWER
BENEFICIALLY
0
OWNED BY -------------------------------------------------------
(9) SOLE DISPOSITIVE POWEREACH
REPORTING
1,640,176
---------
PERSON -------------------------------------------------------
(10) SHARED DISPOSITIVE POWER
WITH
0
----------------------------------------------------------------------------
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,628,843
---------
----------------------------------------------------------------------------
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
/ /
----------------------------------------------------------------------------
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
62.3%
-----
----------------------------------------------------------------------------
(14) TYPE OF REPORTING PERSON*
IN
----------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
2 of 5
<PAGE>
Item 1. Security and Issuer
This statement relates to the Class B Common Stock, par value $1.00 per
share ("Shares"), of Bio-Rad Laboratories, Inc. ("Bio-Rad" or the "Company")
whose principal offices are located at 1000 Alfred Nobel Drive, Hercules,
California 94547.
Item 2. Identity and Background
This statement is being filed by David Schwartz, President and Chairman of
the Board of Bio-Rad, 1000 Alfred Nobel Drive, Hercules, California 94547.
Alice N. Schwartz, a Director, has one-half community property interest in
all shares owned beneficially by Mr. Schwartz. Mrs. Schwartz is retired and
resides at 1129 James Place, El Cerrito, California 94530.
During the last five years, neither Mr. or Mrs. Schwartz has been
convicted in a criminal proceeding (excluding traffic violations and similar
misdemeanors) or has been a party to civil proceedings of a judicial or
administrative body of competent jurisdiction and as a result of such
proceedings was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to,
Federal or State securities laws or finding any violation with respect to
such laws.
Mr. and Mrs. Schwartz are citizens of the United States of America.
Item 3. Source and Amount of Funds or Other Consideration
The funds used for the direct purchase of Bio-Rad shares were available
from personal funds of Mr. and Mrs. Schwartz. The 36,000 shares of Bio-Rad
Class B Common Stock directly purchased were acquired upon the exercise of
stock options at a price of $13.1067 per share pursuant to the 1984 Stock
Option Plan of Bio-Rad Laboratories, Inc.
The funds used for the indirect (partnership) purchase of Bio-Rad shares
were the funds available from the partnership assets.
Item 4. Purpose of Transaction
The purpose of David Schwartz' ownership of Bio-Rad Shares has been
control. Mr. Schwartz controls the management of the Company and may be
deemed to be a "parent" of the Company as that term is defined in the Rules
and Regulations of the Securities and Exchange Commission.
-3-
<PAGE>
Item 5. Interest in Securities of the Issuer
David Schwartz owns beneficially 1,628,843 (62.3%) Shares with respect to
--------- -----
which he has sole voting and dispositive power.
In the past 60 days the following transactions have been effected:
No. of Shares
Date Acquired (Disposed) Price Ownership
2/14/97 700 $28.50 Indirect (Partnership)
2/18/97 300 28.50 Indirect (Partnership)
2/18/97 1,000 28.50 Indirect (Partnership)
2/28/97 36,000 13.1067 Direct
This table does not include any transactions which may be effected by the
Company's profit sharing plan.
Item 6. Contracts, Arrangements, Understandings or Relationships with
Respect to Securities of the Issuer.
Mr. Schwartz is also the beneficial owner of 1,609,687 shares of Class A
---------
Common Stock.
Mr. & Mrs. Schwartz are general partners in a limited partnership which,
from time to time, holds securities of the issuer. As general partners, Mr. &
Mrs. Schwartz have voting and dispositive power for the partnership's Shares;
however, they disclaim beneficial ownership of 2/3 of the shares owned by the
limited partners. Currently, the partnership holds 17,000 Shares of Class B
Common Stock.
Item 7. Material to be Filed as Exhibits
None
-4-
<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.
February 28, 1997 (Revised May 20, 1997)
/s/ David Schwartz
Signature
David Schwartz/NOT APPLICABLE
Name/Title
-5-
