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SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 11)
Chesapeake Biological Laboratories, Inc.
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(Name of Issuer)
Class A Common Stock
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(Title of Class of Securities)
165146
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(CUSIP Number)
CUSIP No. 165146 Schedule 13G
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION OF ABOVE PERSON
William P. Tew, Ph.D.
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
Not Applicable
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3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
5 SOLE VOTING POWER
561,568 (as of December 31, 1999) (includes 230,130 shares
purchasable under options exercisable within sixty days of
December 31, 1999)
6 SHARED VOTING POWER
Not Applicable
7 SOLE DISPOSITIVE POWER
561,568 (as of December 31, 1999) (includes 230,130 shares
purchasable under options exercisable within sixty days of
December 31, 1999)
8 SHARED DISPOSITIVE POWER
Not Applicable
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
561,568 (as of December 31, 1999) (includes 230,130 shares
purchasable under options exercisable within sixty days of
December 31, 1999)
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES
Excludes 14,000 shares owned by spouse in which reporting
person claims no beneficial interest.
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
9.65%
12 TYPE OF REPORTING PERSON
IN
ITEM 1.
(a) Name of Issuer:
Chesapeake Biological Laboratories, Inc.
(b) Address of Issuer's Principal Executive Offices:
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1111 South Paca Street
Baltimore, Maryland 21230
ITEM 2.
(a) Name of Person Filing:
William P. Tew
(b) Address of Principal Business Office, if none, Residence:
412 Stabler's Church Road
Parkton, Maryland 21220
(c) Citizenship:
United States
(d) Title of Class of Securities:
Class A Common Stock
(f) CUSIP Number:
165146
ITEM 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b), check
whether the person filing is a:
Not Applicable
ITEM 4.
(a) Amount Beneficially Owned as of December 31, 1999: 561,568
(b) Percent of Class: 9.65%.
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote as of
December 31, 1999: 561,568 (includes 230,130 shares
purchasable under options exercisable within sixty
days of December 31, 1999)
(ii) shared power to vote or to direct the vote as of
December 31, 1999: Not Applicable.
(iii) sole power to dispose or to direct the disposition
of as of December 31, 1999: 561,568 (includes
230,130 shares purchasable under options
exercisable within sixty days of December 31, 1999)
(iv) shared power to dispose or to direct the disposition
of as of December 31, 1998: Not Applicable
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ITEM 5. Ownership of Five Percent or Less of a Class
Not Applicable.
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.
By signing below I certify that to the best of my knowledge and
belief, the securities referred to above 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.
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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 11, 2000
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Date
/S/ William P. Tew
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Signature
William P. Tew
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Name
