HEMAGEN DIAGNOSTICS INC
SC 13D/A, 1999-09-07
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549



                                  SCHEDULE 13D
                                 (Rule 13d-101)

    INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a)
             AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a)

                                (Amendment No. 3)


                            Hemagen Diagnostics, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)



                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)



                                   423501 105
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                               Mark A. Weiss, Esq.
                           Keating, Muething & Klekamp
                       One East Fourth Street, 18th Floor
                             Cincinnati, Ohio 45202
                                 (513) 579-6411
- --------------------------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)



                                September 3, 1999
- --------------------------------------------------------------------------------
             (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  that is the  subject of this  Schedule  13D,  and is
filing this schedule because of Rule 13d-1(e),  13d-1(f) or 13d-1(g),  check the
following box [ ].


                       (Continued on the following pages)




<PAGE>

 CUSIP No. 423501 105                  13D                     Page 2 of 6 Pages
- --------------------------------------------------------------------------------
 1        NAME OF REPORTING PERSONS
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

          Jerry L. Ruyan
- --------------------------------------------------------------------------------
 2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*         (a) [X]
                                                                    (b)

- --------------------------------------------------------------------------------
 3        SEC USE ONLY

- --------------------------------------------------------------------------------
 4        SOURCE OF FUNDS*

             PF
- --------------------------------------------------------------------------------
 5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) or 2(e)                                              [ ]


- --------------------------------------------------------------------------------
 6        CITIZENSHIP OR PLACE OF ORGANIZATION

             United States citizen
- --------------------------------------------------------------------------------
                              7      SOLE VOTING POWER

         NUMBER OF                   -0-
          SHARES              --------------------------------------------------
       BENEFICIALLY           8      SHARED VOTING POWER
         OWNED BY
           EACH                      122,327
         REPORTING            --------------------------------------------------
        PERSON WITH           9      SOLE DISPOSITIVE POWER

                                      72,927
                             ---------------------------------------------------
                             10      SHARED DISPOSITIVE POWER

                                     -0-
- --------------------------------------------------------------------------------
11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          122,327
- --------------------------------------------------------------------------------
12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES*

- --------------------------------------------------------------------------------
13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          1.6%
- --------------------------------------------------------------------------------
14        TYPE OF REPORTING PERSON*
             IN

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


 CUSIP No. 423501 105                 13D                      Page 3 of 6 Pages
- --------------------------------------------------------------------------------
 1        NAME OF REPORTING PERSONS
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

           William P. Hales
- --------------------------------------------------------------------------------
 2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) [X]
                                                                   (b)

- --------------------------------------------------------------------------------
 3        SEC USE ONLY

- --------------------------------------------------------------------------------
 4        SOURCE OF FUNDS*

             PF
- --------------------------------------------------------------------------------
 5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) or 2(e)


- --------------------------------------------------------------------------------
 6        CITIZENSHIP OR PLACE OF ORGANIZATION

             United States citizen
- --------------------------------------------------------------------------------
                              7      SOLE VOTING POWER

         NUMBER OF                   -0-
          SHARES              --------------------------------------------------
       BENEFICIALLY           8      SHARED VOTING POWER
         OWNED BY
           EACH                      122,327
         REPORTING            --------------------------------------------------
        PERSON WITH           9      SOLE DISPOSITIVE POWER

                                      49,500
                              --------------------------------------------------
                             10      SHARED DISPOSITIVE POWER

                                     -0-
- --------------------------------------------------------------------------------
11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          122,327
- --------------------------------------------------------------------------------
12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES*

- --------------------------------------------------------------------------------
13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          1.6%
- --------------------------------------------------------------------------------
14        TYPE OF REPORTING PERSON*

             IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


CUSIP No. 423501 105                 13D                       Page 4 of 6 Pages
- --------------------------------------------------------------------------------
 1        NAME OF REPORTING PERSONS
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

          Thomas A. Donelan
- --------------------------------------------------------------------------------
 2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)    [X]
                                                               (b)

- --------------------------------------------------------------------------------
 3        SEC USE ONLY

- --------------------------------------------------------------------------------
 4        SOURCE OF FUNDS*

             PF
- --------------------------------------------------------------------------------
 5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) or 2(e)

- --------------------------------------------------------------------------------
 6        CITIZENSHIP OR PLACE OF ORGANIZATION

             United States citizen
- --------------------------------------------------------------------------------
                              7      SOLE VOTING POWER

         NUMBER OF                   -0-
          SHARES              --------------------------------------------------
       BENEFICIALLY           8      SHARED VOTING POWER
         OWNED BY
           EACH                      122,327
         REPORTING            --------------------------------------------------
        PERSON WITH           9      SOLE DISPOSITIVE POWER

                                     -0-
                              --------------------------------------------------
                             10      SHARED DISPOSITIVE POWER

                                     -0-
- --------------------------------------------------------------------------------
11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          122,327
- --------------------------------------------------------------------------------
12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES*

- --------------------------------------------------------------------------------
13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          1.6%
- --------------------------------------------------------------------------------
14        TYPE OF REPORTING PERSON*
             IN

- --------------------------------------------------------------------------------


                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

 CUSIP No. 423501 105                13D                       Page 5 of 6 Pages

- --------------------------------------------------------------------------------
 1        NAME OF REPORTING PERSONS
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

          Christopher P. Hendy
- --------------------------------------------------------------------------------
 2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)   [X]
                                                               (b)

- --------------------------------------------------------------------------------
 3        SEC USE ONLY

- --------------------------------------------------------------------------------
 4        SOURCE OF FUNDS*

             PF
- --------------------------------------------------------------------------------
 5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) or 2(e)

- --------------------------------------------------------------------------------
 6        CITIZENSHIP OR PLACE OF ORGANIZATION

             United States citizen
- --------------------------------------------------------------------------------
                              7      SOLE VOTING POWER

         NUMBER OF                   -0-
          SHARES              --------------------------------------------------
       BENEFICIALLY           8      SHARED VOTING POWER
         OWNED BY
           EACH                      122,327
         REPORTING            --------------------------------------------------
        PERSON WITH           9      SOLE DISPOSITIVE POWER

                                     -0-
                              --------------------------------------------------
                             10      SHARED DISPOSITIVE POWER

                                     -0-
- --------------------------------------------------------------------------------
11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          122,327
- --------------------------------------------------------------------------------
12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
          CERTAIN SHARES*

- --------------------------------------------------------------------------------
13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

          1.6%
- --------------------------------------------------------------------------------
14        TYPE OF REPORTING PERSON*
             IN

- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

     This Amendment No. 3 to Schedule 13D is being filed solely to amend Items 4
and 5 as follows.

Item 4.  Purpose of Transaction.

     On September 3, 1999,  Hemagen's  stock traded between  $1-3/16 and $2-7/8,
closing at $2-1/8. A total of 10,552,400  shares were traded. No information was
available  as to the reason for this  increase in price and volume other than an
FDA product  approval  announcement  made by Hemagen before the market opened on
September  3. The  members  of the  Redwood  Group did not  believe  the  market
movements later in the day were justified by the announcement.  Their belief was
confirmed  when  Hemagen's  CEO, Carl  Franzblau,  stated  publicly in the early
afternoon  that the market  prices  that day were not  justified  by the product
approval  announcement.  In these circumstances the members of the Redwood Group
sold all but 100 of their shares of Common Stock.  As more  information  becomes
available  they may again purchase  shares of Common Stock of Hemagen.  They did
not sell the 122,227 of Common Stock Purchase Warrants that they own.

     Their sale of stock did not divest them of the right to vote 557,527 of the
shares of stock sold by them since the sale  occurred  after the record date for
the consent  solicitation.  They are  continuing  the consent  solicitation  and
intend to cast all those votes for their proposals.

Item 5.  Interest in Securities of Issuer.

     On September 3, 1999 the members of the Redwood  Group sold 562,527  shares
of Common Stock of Hemagen.  They  retained  their  beneficial  ownership of 100
shares and warrants for the purchase of 122,227 shares of Common Stock.

     All of the sales  were  made on the  market at  prevailing  market  prices.
Detailed  information  as to the amount and price of the sales is not  available
but will be provided by amendment.

                                   SIGNATURES

     After reasonable  inquiry and to the best of our knowledge and believe,  we
certify that the information  set forth in this statement is true,  complete and
correct.


Dated: September 7, 1999              *
                                       -----------------------------------------
                                                     Jerry L. Ruyan

                                      *
                                       -----------------------------------------
                                                     William P. Hales

                                      *
                                       -----------------------------------------
                                                     Thomas A. Donelan

                                      *
                                       -----------------------------------------
                                                     Christopher P. Hendy


                                      *By:   /s/Mark A. Weiss
                                          --------------------------------------
                                                 Mark A. Weiss
                                                 Attorney-in-Fact



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