HALIS JEFFREY S
SC 13D/A, 1997-02-18
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549
                                  SCHEDULE l3D
                    Under the Securities Exchange Act of 1934
                                (Amendment No. 1)

                            PRIMEX TECHNOLOGIES, INC.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $1.00 per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    741597108
- --------------------------------------------------------------------------------
                                 (CUSIP Number)
                                                             with a copy to:
Jeffrey S. Halis                                           Eli S. Goldberg, Esq.
500 Park Avenue                                       Lowenstein, Sandler, Kohl,
Fifth Floor                                                Fisher & Boylan, P.A.
New York, New York  10022                                   65 Livingston Avenue
(212) 486-4794                                       Roseland, New Jersey  07068
                                                                  (201) 992-8700
- -------------------------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                February 7, 1997
- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule l3G 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. |_|

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).


<PAGE>



1)  Names of Reporting Persons (S.S. or I.R.S. Identification Nos. of Above 
    Persons):

                          Jeffrey S. Halis ###-##-####

2)  Check the Appropriate Box if a Member of a Group (See Instructions):
         (a)      Not
         (b)    Applicable

3)  SEC Use Only

4)  Source of Funds (See Instructions):  WC

5)  Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) 
    or 2(e):
                                 Not Applicable

6)  Citizenship or Place of Organization:

                                  United States

    Number of                  7) Sole Voting Power:                  425,824*
                                  ----------------------------------------------
    Shares Beneficially        8) Shared Voting Power:                      0
                                  ----------------------------------------------
    Owned by
    Each Reporting             9) Sole Dispositive Power:             425,824*
                                  ----------------------------------------------
    Person With:              10) Shared Dispositive Power:                 0
                                  ----------------------------------------------


11)   Aggregate Amount Beneficially Owned by Each Reporting Person:

                                    425,824*

12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See 
     Instructions):
     
                                 Not Applicable


13)  Percent of Class Represented by Amount in Row
    
              (11):      8.2%*

14)  Type of Reporting Person (See Instructions):       IA

*    309,024 shares (5.9%) of Primex  Technologies,  Inc. common stock are owned
     by Tyndall Partners,  L.P., a Delaware limited  partnership.  62,150 shares
     (1.2%) of  Primex  Technologies,  Inc.  common  stock are owned by  Tyndall
     Institutional Partners, L.P., a Delaware limited partnership. 39,770 shares
     (0.8%) of  Primex  Technologies,  Inc.  common  stock are owned by  Madison
     Avenue Partners, L.P., a Delaware limited partnership. 14,880 shares (0.3%)
     of Primex Technologies,  Inc. common stock are owned by Halo International,
     Ltd., a company organized under the laws of the Cayman Islands. Pursuant to
     the Agreement of Limited  Partnership  of each of Tyndall  Partners,  L.P.,
     Tyndall Institutional Partners, L.P., and Madison Avenue Partners, L.P. and
     the Investment Management Agreement of Halo International, Ltd., Jeffrey S.
     Halis  possesses  sole voting and  investment  control over all  securities
     owned by each of Tyndall Partners,  L.P., Tyndall  Institutional  Partners,
     L.P.,  Madison  Avenue  Partners,  L.P.,  and  Halo  International,   Ltd.,
     respectively.  See Item 5 for further  information  on the  computation  of
     percentages set forth herein.


<PAGE>


Item 1.   Security  and Issuer. 

          This statement relates to the common stock, par value $1.00 per share,
of Primex  Technologies,  Inc., whose principal executive offices are located at
10101 Ninth Street North, St. Petersburg,  Florida 33716-3807.  

Item 2.   Identity and  Background.  

          The person filing this  statement is Jeffrey S. Halis,  whose business
address is 500 Park Avenue,  Fifth Floor,  New York,  New York 10022.  Mr. Halis
serves as a general partner of Halo Capital  Partners,  L.P., a Delaware limited
partnership ("Halo"). Halo serves as the sole general partner of each of Tyndall
Partners,  L.P.,  Tyndall  Institutional  Partners,  L.P.,  and  Madison  Avenue
Partners,  L.P., each of which are Delaware  limited  partnerships  having their
principal  executive offices located at 500 Park Avenue,  Fifth Floor, New York,
New York 10022.  In  addition,  Halo serves as the  investment  manager for Halo
International,  Ltd., a company  organized  under the laws of the Cayman Islands
having its principal  executive  offices  located at  Butterfield  Fund Managers
(Guernsy) Limited, Post Office Box 211, Butterfield House, The Grange, St. Peter
Port,  Guernsey,  Channel  Islands,  GY1 3NQ.  Each of Tyndall  Partners,  L.P.,
Tyndall Institutional  Partners,  L.P., Madison Avenue Partners,  L.P., and Halo
International,  Ltd., are engaged in the investment in personal  property of all
kinds,  including  but  not  limited  to  capital  stock,  depository  receipts,
investment  companies,  mutual funds,  subscriptions,  warrants,  bonds,  notes,
debentures,  options and other securities of whatever kind and nature. 

          Mr. Halis has never been convicted in any criminal proceeding, nor has
he  been a  party  to any  civil  proceeding  commenced  before  a  judicial  or
administrative body of competent  jurisdiction as a result of which he was or is
now 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. Halis is a citizen
of the United States. 

Item 3.   Source and Amount of Funds or Other Consideration.


          All  funds  used  to  purchase   shares  of  common  stock  of  Primex
Technologies,  Inc. on behalf of Tyndall  Partners,  L.P. come directly from the
net assets of Tyndall Partners, L.P. All funds used to purchase shares of common
stock of Primex Technologies,  Inc. on behalf of Tyndall Institutional Partners,
L.P. come directly from the net assets of Tyndall Institutional  Partners,  L.P.
All funds used to purchase shares of common stock of Primex  Technologies,  Inc.
on behalf of Madison Avenue Partners,  L.P. come directly from the net assets of
Madison Avenue Partners,  L.P. All funds used to purchase shares of common stock
of Primex Technologies, Inc. on behalf of Halo International, Ltd. come directly
from the net assets of Halo International,  Ltd. 

Item 4.   Purpose of Transaction.

          The acquisition of the shares of common stock referred to in Item 5 is
solely for  investment  purposes on behalf of Tyndall  Partners,  L.P.,  Tyndall
Institutional   Partners,   L.P.,   Madison  Avenue  Partners,   L.P.  and  Halo
International,  Ltd.,  respectively.  Mr. Halis has no plans or intentions which
relate to or would result in any of the transactions required to be described in
Item 4 of Schedule 13D. 

Item 5.   Interest in Securities of the Issuer.

          Based upon information from Primex Technologies,  Inc.'s management as
of January 31, 1997 there were issued and outstanding 5,222,572 shares of common
stock of Primex  Technologies,  Inc. As of February 7, 1997,  Tyndall  Partners,
L.P.  owned  309,024  of such  shares,  or 5.9% of  those  outstanding,  Tyndall
Institutional  Partners,  L.P.  owned  62,150 of such  shares,  or 1.2% of those
outstanding,  Madison Avenue Partners, L.P. owned 39,770 of such shares, or 0.8%
of those outstanding, and Halo International,  Ltd. owned 14,880 of such shares,
or 0.3% of those  outstanding.  Jeffrey Halis  possesses  sole power to vote and
direct the  disposition  of all shares of common  stock of Primex  Technologies,
Inc. owned by each of Tyndall Partners,  L.P., Tyndall  Institutional  Partners,
L.P., Madison Avenue Partners,  L.P. and Halo International,  Ltd. The following
table  details  the  transactions  by each of Tyndall  Partners,  L.P.,  Tyndall
Institutional Partners, L.P., and Halo International,  Ltd., in shares of common
stock of Primex Technologies,  Inc. since the most recent filing on Schedule 13D
(each of which were effected in ordinary brokers transactions):


<PAGE>



                            A. Tyndall Partners, L.P.

         Date                        Quantity                            Price

                                   (Purchases)

    February 6, 1997                  34,000                             $19.94
    February 7, 1997                  61,030                             $19.87

                                     (Sales)

                                      NONE

                     B. Tyndall Institutional Partners, L.P.

         Date                        Quantity                            Price

                                   (Purchases)

    February 6, 1997                  6,850                              $19.94
    February 7, 1997                 10,000                              $19.88

                                     (Sales)

                                      NONE

                           C. Halo International, Ltd.

         Date                       Quantity                             Price

                                   (Purchases)

    February 4, 1997                  2,000                              $19.50
    February 5, 1997                  7,880                              $20.00
    February 7, 1997                  5,000                              $19.88

                                     (Sales)

                                      NONE



<PAGE>


Item 6.  Contracts,  Arrangements,  Understandings or Relationships With Respect
         to Securities of the Issuer.
            
         No contracts,  arrangements,  understandings or similar  relationships
exist with  respect to the shares of common stock of Primex  Technologies,  Inc.
between Jeffrey S. Halis and any person or entity.  

Item 7.  Material to be Filed as Exhibits. 

         Not applicable.

                                    Signature

          After  reasonable  inquiry  and  to  the  best  of  the  undersigned's
knowledge and belief,  the undersigned hereby certifies that the information set
forth in this statement is true, complete and correct.

                              February 18, 1997


                              ------------------------------------
                              Jeffrey S.  Halis,  as   a   general
                              partner  of  Halo Capital  Partners,
                              L.P., the general partner of each of
                              Tyndall  Partners, L.P.,     Tyndall
                              Institutional Partners, L.P., and 
                              Madison Avenue Partners,    L.P.,
                              and the investment manager  for  Halo
                              International, Ltd.

ATTENTION:  INTENTIONAL  MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE  FEDERAL 
CRIMINAL  VIOLATIONS (SEE 18 U.S.C. 1001).



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