UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D. C. 20549
SCHEDULE 13 G
(Rule 13d-102)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13d-1(b),(c), AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)
Amendment No. __2__
PSYCHEMEDICS CORPORATION
Name of Issuer
____________COMMON__________
Title of Class of Securities
__________744375106___________
CUSIP Number
________January 1, 2000__________
Date of Event Which Requires Filing of This Statement
Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:
[ ] Rule 13d-1(b)
[X] Rule 13d-1(c)
[ ] Rule 13d-1(d)
CUSIP NO. 744375106 13G Page 1 of
4
1. NAMES OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES
ONLY)
Richard T. Christoph,
Richard T. Christoph Living Trust,
Richard T. Christoph IRA,
Ann B. Christoph, IRA
Richard T. Christoph, Trustee of the Carla C.
McMahan Trust, and
Christoph Securities, Inc. (36-2715512)
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* [a]
[ ]
[b]
[ X ]
3. SEC USE ONLY
4. CITIZENSHIP OR PLACE OF ORGANIZATION
All above persons are U.S. Citizens except for
Christoph Securities, Inc., which is an Illinois
corporation.
NUMBER OF 5. SOLE VOTING POWER
SHARES 1,709,950
BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY -0-
EACH 7. SOLE DISPOSITIVE POWER
REPORTING 1,709,950
PERSON 8. SHARED DISPOSITIVE POWER
WITH -0-
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
1,709,950 as of December 31, 1999
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES*
[ ]
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
7.97% of 21,439,976 shares outstanding as of
December 31, 1999.
12. TYPE OF REPORTING PERSON*
Richard T. Christoph IN
Richard T. Christoph Living Trust IN
Richard T. Christoph IRA IN
Ann B. Christoph IRA IN
Richard T. Christoph, Trustee of Carla C.
McMahan Trust IN
Christoph Securities, Inc. CO
CUSIP NO. 744375106 13G Page 2 of
4
Item 1(a) Name of Issuer:
Psychemedics Corporation
Item 1(b) Address:
1280 Massachusetts Ave.
Cambridge, MA 02138
Item 2(a) Name of Person Filing:
Richard T. Christoph,
Richard T. Christoph, Living Trust,
Richard T. Christoph IRA,
Ann B. Christoph IRA,
Richard T. Christoph, Trustee of the Carla C.
McMahan Trust, and
Christoph Securities, Inc.
Item 2(b) Address:
1156 Lynette Drive
Lake Forest, Illinois 60045
Item 2(c) Citizenship:
All above persons are U.S. Citizens, except for
Christoph Securities, Inc., which is an Illinois
corporation.
Item 2(d) Title of Class of Securities:
Common
Item 2(e) CUSIP Number:
744375106
Item 3.If This Statement is Filed Pursuant to Rule 13d-
1(b), or 13d-2(b) or (c), Check Whether the Person
Filing is a:
(a) [ ] Broker or dealer registered under Section
15 of the Exchange Act.
(b) [ ] Bank as defined in Section 3(a) (6) of the
Exchange Act.
(c) [ ] Insurance company as defined in
Section 3 (a) (19) of the Exchange Act.
(d) [ ] Investment company registered under
Section 8 of the Investment Company Act.
(e) [ ] An investment adviser in accordance with
Rule 13d-1 (b) (1) (ii) (E);
(f) [ ] An employee benefit plan or endowment fund
in accordance with Rule 13d-1 (b) (1) (ii) (F);
(g) [ ] A parent holding company or control person
in accordance with Rule 13d-1 (b) (1) (ii) (G);
CUSIP NO. 744375106 13G Page 3 of
4
(h) [ ] A savings association as defined in
Section 3(b) of the Federal Deposit Insurance
Act;
(i) [ ] A church plan that is excluded from the
definition of an investment company under
Section 3(c) (14) of the Investment Company Act;
(j) [ ] Group, in accordance with Rule 13d-1 (b)
(1) (ii) (J).
If this statement is filed pursuant to Rule 13d-1
(c), check this box. [X]
Item 4. Ownership.
Provide the following information regarding the
aggregate number and percentage of the class of securities
of the issuer identified in Item 1.
(a)Amount beneficially owned:
______1,709,950_____________________________________
_______________
(b)Percent of class:
______7.97% of 21,439,976 shares outstanding as
of December 31, 1999._________
(c)Number of shares as to which such person has:
(i)Sole power to vote or to direct the vote
_______1,709,950__________
(ii) Shared power to vote or to direct the vote
________-0-_____________
(iii) Sole power to dispose or to direct the
disposition of ___1,709,950____
(iv) Shared power to dispose or to direct the
disposition of _____-0-______
The shares of stock owned by each person is as follows:
Richard T. Christoph IRA 1,351,000
Richard T. Christoph Trust 155,750
Ann B. Christoph IRA 14,600
Richard T. Christoph, Trustee of the
Carla C. McMahan Trust 51,500
Christoph Securities, Inc.
137,100
The above persons own a total of 1,709,950 shares
of stock of the issuer, representing 7.97% of the
outstanding shares as of December 31, 1999.
Item 5 Ownership of Five Percent or Less of a Class:
N/A
Item 6 Ownership of More than Five Percent on Behalf
of Another Person: N/A
Item 7 Identification and Classification of
N/A
the Subsidiary which Acquired the
Security Being Reported on the
Parent Holding Company:
CUSIP NO. 744375106 13G Page 4 of
4
Item 8 Identification and Classification of Members
of the Group: N/A
Item 9 Notice of Dissolution of Group:
N/A
Item 10 Certification:
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 such
securities and were not acquired and are not held
in connection with or as a participant in any
transaction having that purpose or effect.
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 8, 2000
Signature:_/S/___Richard T. Christoph_________
Name/Title: Richard T. Christoph, individually,
as Trustee of
the Richard T. Christoph Living Trust,
on behalf of the Richard T. Christoph
IRA,
as Trustee of the Carla C. McMahon
Trust,
and as President of Christoph
Securities, Inc.
Date: February 8, 2000
Signature: /S/_____Ann B. Christoph___________
Name/Title: Ann B. Christoph, on behalf of the
Ann B. Christoph IRA
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