<PAGE>


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-K/A

(Mark One)

[X]      ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
         OF THE SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended JANUARY 31, 1999

                                       OR

[ ]      TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
         OF THE SECURITIES EXCHANGE ACT OF 1934

                         Commission File number: 0-15810

                            OSICOM TECHNOLOGIES, INC.
               (Exact name of Registrant as specified in charter)

<TABLE>

<S>                                                       <C>
                    NEW JERSEY                                       22-2367234
 (State or other jurisdiction of incorporation or         (IRS Employer Identification Number)
                   organization)

            2800 28TH STREET, SUITE 100
             SANTA MONICA, CALIFORNIA                                  90405
     (Address of principal executive offices)                        (Zip Code)
</TABLE>


                                 (310) 581-4030
              (Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(g) of the Act:

<TABLE>

<S>                                                    <C>
      COMMON STOCK, PAR VALUE $0.30                                 NASDAQ
           Title of each class                       Name of exchange on which registered
</TABLE>


Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days. Yes  X  No ___
                                       ---

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S is not contained herein, and will not be contained, to the best
of Registrant's knowledge, in a definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. Yes ___   No  X
                        ---

The Registrant's revenues for its most recent fiscal year were $94,949,000.

The aggregate market value of voting stock based upon the bid and ask price held
by non-affiliates of the Registrant on April 30, 1999 was $107,458,000.

Number of shares outstanding of the Registrant's only class of common stock as
of April 30, 1999 (the latest practicable date): 8,972,339.

                    DOCUMENTS INCORPORATED BY REFERENCE: None

This Form 10-K, future filings of the registrant, press releases of the
registrant, and oral statements made with the approval of an authorized
executive officer of the Registrant may contain forward looking statements. In
connection therewith, please see the cautionary statements and risk factors
contained in Item 1. "Business - Forward Looking Statements - Cautionary
Statement" and "Business - Risk Factors", which identify important factors which
could cause actual results to differ materially from those in any such
forward-looking statements.






<PAGE>



ITEM 11. EXECUTIVE COMPENSATION

         The following tables set forth the annual compensation for both
individuals who served as the Company's Chief Executive Officer ("CEO") for the
fiscal year ended January 31, 1999, and for the four most highly compensated
executive officers of the Company, other than the CEO, who were serving as
executive officers at the end of our fiscal year whose salary and bonus exceeded
$100,000.

<TABLE>
<CAPTION>

========================================================================================================================
                                               SUMMARY COMPENSATION TABLE
------------------------------------------------------------------------------------------------------------------------
                                                                                                           All Other
   Name and Principal      Year          Annual Compensation                Long-Term Compensation        Compensation
   Position                                                                                                     ($)
                                   -----------------------------------------------------------------------
                                     Salary   Bonus ($)   Other       Restricted  Securities    Long-Term
                                       ($)               Annual         Stock     Underlying    Incentive
                                                         Compen-       Award(s)     Options        Plan
                                                         sation          ($)          (#)        Payouts
                                                           ($)
  ---------------------------------------------------------------------------------------------------------------------
<S>                        <C>       <C>              <C>    <C>          <C>        <C>           <C>          <C>
   Par Chadha, Chairman,   1999      147,500          0      0            0          349,164       0            0
   Chief Executive         1998       60,000          0      0            0           16,667       0            0
   Ofificer                1997            0          0      0            0           16,667       0            0
  ---------------------------------------------------------------------------------------------------------------------
   Xin Cheng,              1999      125,031     51,066      0            0          196,183       0            0
   President, Director     1998       90,248          0      0            0           16,667       0            0
                           1997       84,110          0      0            0           16,667       0            0
  ---------------------------------------------------------------------------------------------------------------------
   Christopher E. Sue,     1999      103,077          0      0            0           66,665       0            0
   VP Finance, Secretary   1998       95,000          0      0            0                0       0            0
                           1997       76,297          0      0            0            8,334       0            0
  ---------------------------------------------------------------------------------------------------------------------
   Ronald Mackey,          1999      123,126     50,000      0            0           81,153       0            0
   Executive VP            1998      154,146          0      0            0                0       0            0
   Technology
  ---------------------------------------------------------------------------------------------------------------------
   Arthur Trakas,          1999      152,420          0      0            0           51,666       0            0
   Executive VP            1998      154,146          0      0            0                0       0            0
   Worldwide Sales
  =====================================================================================================================
</TABLE>


LONG-TERM INCENTIVE PLANS

         The Company has no long-term incentive plans other than the 1988 and
1997 Stock Option Plans and the 1997 Directors Stock Option Plan.


                                       1





<PAGE>

<TABLE>
<CAPTION>

  =========================================================================================================================
                                                OPTION GRANTS IN LAST FISCAL YEAR
  -------------------------------------------------------------------------------------------------------------------------
                                    Individual Grants
  ---------------------------------------------------------------------------------------
        Name           Number of     % of Total    Exercise    Market       Expiration     Potential Realizable Value at
                      Securities      Options       or Base    Price on        Date         Assumed Rates of Stock Price
                      Underlying     Granted to      Price     Date                       Appreciation for Option Term (B)
                        Options      Employees    ($/Sh) (B)   Granted                    ---------------------------------
                     Granted (#)     in Fiscal                 ($/Sh) (B)                    0%      5%  ($)       10% ($)
                                        Year                                                ($)
  -------------------------------------------------------------------------------------------------------------------------
<S>                        <C>           <C>          <C>         <C>        <C>             <C>      <C>         <C>
  Par Chadha               8,334         0.57%        $13.50      $12.38     9-26-2007        0        55,552      155,100
                         340,830        23.24%         $7.03       $7.03     11-2-2008        0     1,507,111    3,819,314
  -------------------------------------------------------------------------------------------------------------------------
  Xin Cheng               66,667         4.55%         $4.78       $4.78      8-3-2008        0       200,459      508,003
                         129,516         8.83%         $7.03       $7.03     11-2-2008        0       572,705    1,451,346
  -------------------------------------------------------------------------------------------------------------------------
  Christopher E.           5,000         0.34%         $4.78       $4.78      8-3-2008        0        15,034       38,100
  Sue                      5,000         0.34%        $18.00       $4.78      5-3-1999        0             0            0
                           5,000         0.34%        $30.00       $4.78      5-3-1999        0             0            0
                           5,000         0.34%        $45.00       $4.78      5-3-1999        0             0            0
                          46,665         3.18%         $7.03       $7.03     11-2-2008        0       206,347      522,924
  -------------------------------------------------------------------------------------------------------------------------
  Ronald Mackey (A)        8,334         0.57%         $4.78       $4.78      8-3-2008        0        25,059       63,505
                           8,334         0.57%        $18.00       $4.78      5-3-1999        0             0            0
                           8,334         0.57%        $30.00       $4.78      5-3-1999        0             0            0
                           8,334         0.57%        $45.00       $4.78      5-3-1999        0             0            0
                          15,585         1.06%        $15.94      $15.94     1-22-2000        0        25,460       52,161
                          46,665         2.20%         $7.03       $7.03     11-2-2008        0       142,526      361,189
  -------------------------------------------------------------------------------------------------------------------------
  Arthur Trakas            8,334         0.57%         $4.78       $4.78      8-3-2008        0        25,059       63,505
                           8,334         0.57%        $18.00       $4.78      5-3-1999        0             0            0
                           8,334         0.57%        $30.00       $4.78      5-3-1999        0             0            0
                           8,334         0.57%        $45.00       $4.78      5-3-1999        0             0            0
                          18,330         1.25%         $7.03       $7.03     11-2-2008        0        81,053      205,405
  =========================================================================================================================
</TABLE>



A)        The 15,595 options expiring January 22, 2000 represent a reprice
          of options originally granted on October 26, 1996 exercisable at
          $26.74 in connection with Mr. Mackey's original employment with
          the Company. The repricing occured on April 30, 1998 when all
          employees were permited to elect to reprice their most recent
          grant only to the then market price with all other terms remaining
          the same; the repriced options are not exercisable until the
          market price of the Company's common stock equals $30.00.

B)        In accordance with Securities and Exchange Commission rules, these
          columns show gains that might exist for the respective options,
          assuming that the market price of the Company's common stock
          appreciates from the date of the grant over the term of the option
          at rates of 5% and 10%, respectively.

                                        2





<PAGE>


<TABLE>
<CAPTION>
  =====================================================================================================================
                     AGGREGATED OPTION EXERCISES IN 1999 AND JANUARY 31, 1999 OPTION VALUES
  ---------------------------------------------------------------------------------------------------------------------
          Name            Shares        Value      Number of Securities Underlying         Value of Unexercised
                         Acquired    Realized ($)   Unexercised Options at Fiscal     In-the-Money Options at FY-End
                            on                               Year-End (#)                         ($)(A)
                         Exercise
                            (#)
                                                   --------------------------------------------------------------------
                                                     Exercisable     Unexercisable     Exercisable      Unexercisable
  ---------------------------------------------------------------------------------------------------------------------
<S>                     <C>           <C>               <C>               <C>                <C>            <C>
  Par Chadha                 -            -             192,503           340,830            886,525        3,099,423
  ---------------------------------------------------------------------------------------------------------------------
  Xin Cheng                  -            -              53,818           196,183            125,292        1,934,040
  ---------------------------------------------------------------------------------------------------------------------
  Christopher E. Sue         -            -               8,334            46,665                  0          424,360
  ---------------------------------------------------------------------------------------------------------------------
  Ronald Mackey              -            -                   0            81,153                  0          293,110
  ---------------------------------------------------------------------------------------------------------------------
  Arthur Trakas              -            -              23,335            51,666             37,502          261,227
  ---------------------------------------------------------------------------------------------------------------------
</TABLE>



A)       Options are "in-the-money" if, on January 31, 1999, the market price of
         the Common Stock ($16.125) exceeded the exercise price of such options.
         The value of such options is calculated by determining the difference
         between the aggregate market price of the Common Stock covered by such
         options on January 31, 1999, and the aggregate exercise price of such
         options.

EMPLOYMENT AGREEMENTS

         We have no employment contracts with our executives officers.

COMPLIANCE WITH SECTION 16(a) OF THE EXCHANGE ACT

         The Securities Exchange Act of 1934 requires the Company's directors
and executive officers and person who own more than ten percent of a registered
class of the Company's equity securities to file reports of beneficial ownership
and changes in beneficial ownership with the Securities and Exchange Commission.
To the knowledge of the Company, all filing requirements under Section 16(a) in
respect of the Company were complied within the year ended January 31, 1999.

                                       3





<PAGE>


ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         The following table sets forth certain information as of April 30,
1999, regarding the ownership of the Common Stock by (i) each Director of the
Company; (ii) each of the executive officers named in the Summary Compensation
Table, above; (iii) each person known to the Company to beneficially own 5% or
more of Common Stock; and (iv) all Directors and executive officers of the
Company as a group. Except as indicated, all persons named as beneficial owners
of Common Stock have sole voting and investment power with respect to the shares
indicated as beneficially owned by them.


<TABLE>
<CAPTION>

  ==================================================================================
    Name of Beneficial Owner (A)                            Common Stock
                                                 -----------------------------------
                                                 Number of Shares   Percentage of
                                                                     Outstanding
                                                                         (I)
  ----------------------------------------------------------------------------------
<S>                                                   <C>                <C>
  Par Chadha
  2800 28th Street, Suite 100                         603,843 (B)        6.5%
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Leonard Hecht
  2800 28th Street, Suite 100                          88,334 (C)        1.0%
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Humbert B. Powell III
  2800 28th Street, Suite 100                          91,669 (D)        1.1%
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Renn Zaphiropoulos
  2800 28th Street, Suite 100                          26,668 (E)         *
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Xin Cheng
  2800 28th Street, Suite 100                          54,552 (F)         *
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Christopher E. Sue
  2800 28th Street, Suite 100                           8,516 (G)         *
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Ronald Mackey
  2800 28th Street, Suite 100                          38,349             *
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Arthur Trakas
  2800 28th Street, Suite 100                          28,097 (H)         *
  Santa Monica, CA 90405
  ----------------------------------------------------------------------------------
  Heritage Capital Management, Inc.
  706 Giddings Avenue                                 552,737            6.2%
  Annapolis, MD 21401
  ----------------------------------------------------------------------------------
  All Directors and executive officers as a
  group                                               946,743           10.3%
  ==================================================================================
</TABLE>

*        Less than 1%

                                       4






<PAGE>

A)       All information with respect to beneficial ownership of the shares
         is based upon filings made by the respective beneficial owners
         with the Securities and Exchange Commission or information
         provided by such beneficial owners to the Company.

B)       Includes shares and options held in the name of R II Partners,
         Inc., RT Investments, Inc., and Rand Research Corporation. Mr.
         Chadha owns, directly and indirectly, 100% of the outstanding
         capital stock of R II Partners, Inc., and RT Investments, Inc. Mr.
         Chadha holds exercisable options to acquire 192,503 shares of
         common stock at prices ranging from $4.50 to $23.76 per share
         (market price on the date granted).

         Mr. Chadha disclaims beneficial ownership of the 9,636 shares and
         exercisable options to acquire 66,668 shares held by Ms. Chadha
         as well as exercisable options to acquire 16,667 shares held
         beneficially by his children.

C)       Includes shares and options held in the name of Chrysalis Capital
         Group. Mr. Hecht ownes, directly and indirectly, 100% of the
         outstanding capital stock of Chrysalis Capital Group. Mr. Hecht
         holds exercisable options to acquire 65,003 shares of common stock
         at prices ranging from $3.00 to $28.46 per share (market price on
         the date granted).

D)       Includes shares, options and warrants held in the name of HMS
         Advisors, LLC. Mr. Powell owns, directly and indirectly, 50% of
         the outstanding capital stock of HMS Advisors, LLC. Mr Powell
         holds exercisable options to acquire 66,669 shares of common stock
         at prices ranging from $7.69 to $24.38 (market price on the date
         granted).

E)       Includes exercisable options held by Mr. Zaphiropoulos to acquire
         26,668 shares of common stock at prices ranging from $7.04 to
         $11.16 (market price on the date granted).

F)       Includes exercisable options held by Mr. Cheng to acquire 53,818
         shares of common stock at prices ranging from $3.00 to $23.76 per
         share (market price on the date granted).

G)       Includes exercisable options held by Mr. Sue to acquire 8,334
         shares of common stock at a price of $20.63 per share (market
         price on the date granted).

H)       Includes exercisable options held by Mr. Trakas to acquire 23,335
         shares of common stock at a price of $3.50 per share (market price
         on the date granted).

I)       For each beneficial owner, the "Percentage of Outstanding" equals
         each owner's actual holdings of shares plus shares represented by
         unexercised options and warrants held, divided by total shares
         outstanding of the Company at April 30, 1999, of 8,972,339, plus
         the above-referenced unexercised options and warrants of the
         referenced holder only. In other words, individual percentages of
         the listed holders will not add to the group total because the
         calculations are made separately for each holder.

                                       5





<PAGE>


                                   SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Company has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized.

OSICOM TECHNOLOGIES, INC.

By:      /s/ Christopher E. Sue                        Date: June 1, 1999
   ------------------------------------
       Christopher E. Sue
       Vice President Finance
       Principal Accounting Officer
       Secretary

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons on behalf of the Company and in
the capacities and on the dates indicated.

<TABLE>


<S>                                                    <C>
By:      /s/ Par Chadha                                Date: June 1, 1999
      ---------------------------------
       Par Chadha
       Chairman and Director
       Chief Executive Officer

By:      /s/ Xin Cheng                                 Date: June 1, 1999
      ---------------------------------
       Xin Cheng
       Director
       President

By:      /s/ Humbert B. Powell III                     Date: June 1, 1999
      ---------------------------------
       Humbert B. Powell III
       Director

By:      /s/ Leonard Hecht                             Date: June 1, 1999
      ---------------------------------
       Leonard Hecht
       Director

By:      /s/ Renn Zaphiropoulos                        Date: June 1, 1999
      ---------------------------------
       Renn Zaphiropoulos
       Director
</TABLE>


                                       6