ENZON INC
10-Q, 1999-02-16
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                    FORM 10-Q


                QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


For Quarter Ended December 31, 1998                  Commission File No. 0-12957


                                [LOGO]ENZON, INC.
             (Exact name of registrant as specified in its charter)


            Delaware                                        22-2372868
(State or other jurisdiction of                           (IRS Employer
 incorporation or organization)                           Identification No.)

20 Kingsbridge Road, Piscataway, New Jersey                    08854 
(Address of principal executive offices)                     (Zip Code)

                                 (732) 980-4500
              (Registrant's telephone number, including area code:)


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 [_]


The number of shares of common stock, $.01 par value, outstanding as of February
5, 1999 was 36,081,951 shares.


<PAGE>

PART I FINANCIAL INFORMATION
Item 1. Financial Statements

                           ENZON, INC AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                       December 31, 1998 and June 30, 1998

<TABLE>
<CAPTION>
                                                   December 31,      June 30,
ASSETS                                                 1998            1998
                                                  -------------   -------------
                                                   (unaudited)           *
<S>                                               <C>             <C>          
Current assets:
  Cash and cash equivalents                       $  23,735,645   $   6,478,459
  Accounts receivable                                 3,942,542       2,300,046
  Inventories                                         1,220,933       1,022,530
  Other current assets                                1,427,446         447,952
                                                  -------------   -------------
     Total current assets                            30,326,566      10,248,987
                                                  -------------   -------------
Property and equipment                               12,453,041      15,134,075
  Less accumulated depreciation and amortization     11,127,657      13,368,330
                                                  -------------   -------------
                                                      1,325,384       1,765,745
                                                  -------------   -------------
Other assets:
  Investments                                            69,002          69,002
  Other assets, net                                     760,204         464,747
  Patents, net                                        1,121,226       1,192,897
                                                  -------------   -------------
                                                      1,950,432       1,726,646
                                                  -------------   -------------
Total assets                                      $  33,602,382   $  13,741,378
                                                  =============   =============


LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
  Accounts payable                                $   1,572,547   $   1,711,856
  Accrued expenses                                    4,394,693       4,375,822
                                                  -------------   -------------
     Total current liabilities                        5,967,240       6,087,678
                                                  -------------   -------------
  Accrued rent                                          647,627         727,160
  Royalty advance - RPR                                 303,202              --
                                                  -------------   -------------
                                                        950,829         727,160
                                                  -------------   -------------

Commitments and contingencies

Stockholders' equity:
  Preferred stock-$.01 par value,
    authorized 3,000,000 shares: issued and
    outstanding 107,000 shares at December
    31, 1998 and June 30, 1998 (liquidation
    preference aggregating $2,675,000 at
    December 31, 1998 and at June 30, 1998)               1,070           1,070
  Common stock-$.01 par value, authorized
    60,000,000 shares: issued and
    outstanding 35,978,633 shares at
    December 31, 1998 and 31,341,353 shares
    at June 30, 1998                                    359,786         313,414

  Additional paid-in capital                        145,150,389     123,453,874
  Accumulated deficit                              (118,826,932)   (116,841,818)
                                                  -------------   -------------
Total stockholders' equity                           26,684,313       6,926,540
                                                  -------------   -------------
Total liabilities and stockholders' equity        $  33,602,382   $  13,741,378
                                                  =============   =============
</TABLE>

* Condensed from audited financial statements.

The  accompanying  notes are an integral  part of these  unaudited  consolidated
condensed financial statements.


                                        2

<PAGE>

                                   ENZON, INC.
                 CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
          Three Months and Six Months Ended December 31, 1998 and 1997
                                   (Unaudited)

<TABLE>
<CAPTION>
                                                          Three months ended                   Six months ended
                                                     December 31,      December 31,      December 31,      December 31,
                                                         1998              1997              1998              1997
                                                    ------------      ------------      ------------      ------------
<S>                                                 <C>               <C>               <C>               <C>         
Revenues
  Sales                                             $  3,782,411      $  4,139,841      $  6,718,113      $  6,604,475
  Contract revenue                                        15,510           107,500            67,475         2,312,609
                                                    ------------      ------------      ------------      ------------
     Total revenues                                    3,797,921         4,247,341         6,785,588         8,917,084
                                                    ------------      ------------      ------------      ------------
Costs and expenses
  Cost of sales                                        1,028,945         1,134,682         2,338,796         1,739,390
  Research and development expenses                    1,847,565         1,985,738         3,422,911         4,132,707
  Selling, general and administrative expenses         2,108,376         1,498,242         3,643,655         2,826,684
                                                    ------------      ------------      ------------      ------------
     Total costs and expenses                          4,984,886         4,618,662         9,405,362         8,698,781
                                                    ------------      ------------      ------------      ------------
       Operating income (loss)                        (1,186,965)         (371,321)       (2,619,774)          218,303
                                                    ------------      ------------      ------------      ------------
Other income (expense)
  Interest and dividend income                           300,315           150,763           602,881           265,563
  Interest expense                                        (2,619)           (4,467)           (8,055)          (10,905)
  Other                                                   39,104            (1,783)           39,834            (1,845)
                                                    ------------      ------------      ------------      ------------
                                                         336,800           144,513           634,660           252,813
                                                    ------------      ------------      ------------      ------------
     Net income (loss)                              ($   850,165)     ($   226,808)     ($ 1,985,114)     $    471,116
                                                    ============      ============      ============      ============
Basic earnings (loss) per common share                    ($0.03)           ($0.01)           ($0.06)            $0.01
                                                    ============      ============      ============      ============
Diluted earnings (loss) per common share                  ($0.03)           ($0.01)           ($0.06)            $0.01
                                                    ============      ============      ============      ============

Weighted average number of common shares
  issued and outstanding                              35,611,863        30,975,856        35,181,937        30,918,228
                                                    ============      ============      ============      ============

Weighted average number of common shares
  issued and outstanding and dilutive potential
  common shares                                       35,611,863        30,975,856        35,181,937        32,595,737
                                                    ============      ============      ============      ============
</TABLE>

The  accompanying  notes are an integral  part of these  unaudited  consolidated
condensed financial statements.

                                       3

<PAGE>

                          ENZON, INC. AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
                   Six Months Ended December 31, 1998 and 1997
                                   (Unaudited)

<TABLE>
<CAPTION>
                                                                             Six Months Ended
                                                                       December 31,      December 31,
                                                                           1998              1997
                                                                      ------------      ------------
<S>                                                                   <C>               <C>         
Cash flows from operating activities:
  Net income (loss)                                                   ($ 1,985,114)     $    471,116
  Adjustment for depreciation and amortization                             559,869           650,404
  (Gain) Loss on retirement of equipment                                   (39,834)            1,845
  Non-cash expense for issuance of common stock and stock options          242,497           111,882
  Decrease in accrued rent                                                 (79,533)          (63,319)
  Decrease in royalty advance - RPR                                       (110,507)         (871,146)
  Changes in assets and liabilities                                     (1,906,039)         (401,219)
                                                                      ------------      ------------
  Net cash used in operating activities                                 (3,318,661)         (100,437)
                                                                      ------------      ------------
Cash flows from investing activities:
  Capital expenditures                                                    (137,875)          (79,863)
  Proceeds from sale of equipment                                          129,872            83,129
                                                                      ------------      ------------
  Net cash (used in) provided by investing activities                       (8,003)            3,266
                                                                      ------------      ------------
Cash flows from financing activities:
  Proceeds from issuance of common stock, net                           20,583,850           502,250
  Principal payments of obligation under capital leases                         --            (1,283)
                                                                      ------------      ------------
  Net cash provided by financing activities                             20,583,850           500,967
                                                                      ------------      ------------

  Net increase in cash and cash equivalents                             17,257,186           403,796
  Cash and cash equivalents at beginning of period                       6,478,459         8,315,752
                                                                      ------------      ------------
  Cash and cash equivalents at end of period                          $ 23,735,645      $  8,719,548
                                                                      ============      ============
</TABLE>

The  accompanying  notes are an integral  part of these  unaudited  consolidated
condensed financial statements.

                                       4

<PAGE>

                          ENZON, INC. AND SUBSIDIARIES
              Notes To Consolidated Condensed Financial Statements
                                   (Unaudited)


(1)  Organization and Basis of Presentation

     The  unaudited   consolidated  condensed  financial  statements  have  been
prepared  from the  books  and  records  of  Enzon,  Inc.  and  subsidiaries  in
accordance with generally accepted  accounting  principles for interim financial
information.  Accordingly,  they  do not  include  all of  the  information  and
footnotes  required by generally  accepted  accounting  principles  for complete
financial statements. In the opinion of management,  all adjustments (consisting
only of  normal  and  recurring  adjustments)  considered  necessary  for a fair
presentation have been included.  Interim results are not necessarily indicative
of the results that may be expected for the year.

     Effective  July  1,  1998,  the  Company  adopted  Statement  of  Financial
Accounting Standards No. 130 ("SFAS 130"), Reporting  Comprehensive Income. SFAS
130 establishes new rules for the reporting and display of comprehensive  income
and its  components.  The  adoption  of SFAS 130 had no impact on the  Company's
results of operations  for the three and six months ended  December 31, 1998 and
1997. The net loss of $850,000 and $227,000, recorded for the three months ended
December 31, 1998 and 1997 and the net loss of $1,985,000  and the net income of
$471,000  recorded  for the  six  months  ended  December  31,  1998  and  1997,
respectively,  are in each case  equal to the  comprehensive  income  (loss) for
those periods.

(2)  Earnings (Loss) Per Share

     Basic  earnings  (loss) per common share is based on the net income  (loss)
for the relevant  period,  adjusted for cumulative  undeclared  preferred  stock
dividends of $54,000 for each of the three  months  ended  December 31, 1998 and
1997,  and $107,000 and $108,000 for the six months ended  December 31, 1998 and
1997,  respectively,  divided by the weighted  average  number of common  shares
issued and outstanding during the period.

     Diluted  earnings per common  share for the six months  ended  December 31,
1997 is based on net income,  adjusted for cumulative undeclared preferred stock
dividends of $108,000 for the six months ended December 31, 1997, divided by the
weighted  average  number of common  shares  issued and  outstanding  during the
period, plus the exercise or conversion of all dilutive potential common shares.

     Diluted loss per common share for the three months ended  December 31, 1998
and 1997 and the six months ended  December  31, 1998,  is based on the net loss
for the relevant  period  adjusted for  cumulative  undeclared  preferred  stock
dividends of $54,000 for each of the three  months  ended  December 31, 1998 and
1997,  respectively,  and $107,000  for the six months ended  December 31, 1998,
divided by the weighted  average number of common shares issued and  outstanding
during the period.  The exercise or conversion of all dilutive  potential common
shares  is not  included,  due to the net loss  recorded  for each of the  three
months ended  December  31, 1998 and 1997 and the six months ended  December 31,
1998. As of December 31, 1998, the Company had approximately  6,344,000 dilutive
potential  common  shares  outstanding  that  could  potentially  dilute  future
earnings per share calculations.


                                       5

<PAGE>

                          ENZON, INC. AND SUBSIDIARIES
         Notes To Consolidated Condensed Financial Statements, Continued
                                   (Unaudited)


(3)  Inventories

     The composition of inventories at December 31, 1998 and June 30, 1998 is as
follows:

                                               December 31,            June 30,
                                                   1998                  1998
                                               ----------            ----------
     Raw materials                             $  524,000            $  510,000
     Work in process                              385,000               398,000
     Finished goods                               312,000               115,000
                                               ----------            ----------
                                               $1,221,000            $1,023,000
                                               ==========            ==========

(4)  Cash Flow Information

     The Company considers all highly liquid securities with original maturities
of three months or less to be cash equivalents.  Cash payments for interest were
approximately  $8,000 and $11,000 for the six months ended December 31, 1998 and
1997,  respectively.  There were no income tax payments  made for the six months
ended December 31, 1998 and 1997.

     There were no conversions of Series A Preferred Stock during the six months
ended December 31, 1998.  During the six months ended  December 31, 1997,  1,000
shares of Series A Cumulative  Convertible  Preferred Stock ("Series A Preferred
Stock") were  converted to 2,272 shares of Common  Stock.  Accrued  dividends of
$15,000 on the Series A Preferred Stock that was converted during the six months
ended  December 31, 1997,  were settled by issuing  1,358 shares of Common Stock
and cash payments totaling $10 for fractional shares.

(5)  Stockholders' Equity

     In July  1998,  the  Company  sold  3,983,000  shares of Common  Stock in a
private placement to a small group of investors.  The private placement resulted
in gross proceeds of approximately $18,919,000 and net proceeds of approximately
$17,550,000.

     During the six  months  ended  December  31,  1998,  82,500  warrants  were
exercised to purchase  82,500 shares of the Company's  Common Stock at $2.50 per
share.  These  warrants were issued during the year ended June 30, 1996, as part
of the commission due to a real estate broker in connection with the termination
of the Company's former lease at 40 Kingsbridge Road.

     During the six months ended  December 31, 1998,  the Company issued 200,000
five-year  warrants  to  purchase  Enzon  Common  Stock at $6.50 per share,  the
closing  price of the  common  stock  on the date of  grant.  The  warrants  are
consideration  for services to be rendered  through February 2002. The estimated
fair value of the warrants of approximately  $917,000 is included as a component
of other assets with the corresponding current portion included in other current
assets on the accompanying  balance sheet and will be amortized over the service
period of three years.


                                       6

<PAGE>

                          ENZON, INC. AND SUBSIDIARIES
         Notes To Consolidated Condensed Financial Statements, Continued
                                   (Unaudited)

(6)  Non-Qualified Stock Option Plan

     During the six months ended  December 31, 1998,  the Company issued 279,000
stock  options  at an  average  exercise  price of $6.49  per  share  under  the
Company's  Non-Qualified  Stock Option Plan,  as amended,  of which 198,000 were
granted to  executive  officers  of the  Company as part of a bonus plan for the
year ended June 30,  1998.  None of the  options  granted  during the period are
exercisable  as of December  31, 1998.  All options  were granted with  exercise
prices that equaled the fair market value of the underlying stock on the date of
grant.

(7)  Commitments and Contingencies

     The  Company  is being  sued by a former  financial  advisor,  LBC  Capital
Resources,  Inc.  ("LBC"),  which is asserting that under a May 2, 1995,  letter
agreement ("Letter  Agreement")  between Enzon and LBC Capital  Resources,  Inc.
("LBC"),  LBC was  entitled to a commission  in  connection  with the  Company's
January and March 1996 private placements, comprised of $500,000 and warrants to
purchase  1,000,000  shares of Enzon common stock at an exercise  price of $2.50
per share.  LBC has also asserted  that it is entitled to an  additional  fee of
$175,000 and warrants to purchase  250,000 shares of Enzon common stock when and
if any  of  the  warrants  obtained  pursuant  to  the  private  placements  are
exercised.  LBC has claimed  $3,000,000 in compensatory  damages,  plus punitive
damages,  counsel fees and costs for the alleged breach of the Letter Agreement.
The Company  believes that no such commission was due under the Letter Agreement
and denies any  liability  under the Letter  Agreement.  The Company  intends to
defend this lawsuit vigorously.

     In the course of normal operations, the Company is subject to the marketing
and manufacturing regulations as established by the Food and Drug Administration
("FDA").  During the six months ended December 31, 1998, the Company and the FDA
agreed to temporary labeling and distribution  modifications for ONCASPAR due to
increased  levels of  particulates  in certain  batches of ONCASPAR,  which were
manufactured  by the  Company.  The  Company,  rather than  Rhone-Poulenc  Rorer
("RPR"),  will temporarily  distribute  ONCASPAR directly to patients,  on an as
needed  basis,  in order to institute  the  additional  inspection  and labeling
procedures prior to distribution.  Upon resolution of the existing manufacturing
problem,  it is  expected  that RPR  will  resume  the  normal  distribution  of
ONCASPAR.  This manufacturing problem is isolated to only ONCASPAR.  The Company
is currently engaged in an extensive review of its manufacturing  procedures for
this product.


                                       7

<PAGE>


Item 2. Management's  Discussion and Analysis of Financial Condition and Results
of Operations

Information contained herein contains "forward-looking  statements" which can be
identified  by the  use  of  forward-looking  terminology  such  as  "believes,"
"expects,"  "may," "will," "should," or "anticipates" or the negative thereof or
other  variations  thereon  or  comparable  terminology,  or by  discussions  of
strategy.  No  assurance  can be given  that the future  results  covered by the
forward-looking  statements  will be achieved.  The matters set forth in Exhibit
99.0 to the Company's  Annual Report on Form 10-K for the fiscal year ended June
30, 1998,  which is  incorporated  herein by  reference,  constitute  cautionary
statements  identifying  important factors with respect to such  forward-looking
statements,  including certain risks and uncertainties,  that could cause actual
results  to  vary  materially   from  the  future  results   indicated  in  such
forward-looking  statements.  Other factors  could also cause actual  results to
vary  materially  from the  future  results  indicated  in such  forward-looking
statements.

Results of Operations

Three months ended December 31, 1998 vs. Three months ended December 31, 1997

Revenues  for the three  months  ended  December  31, 1998  decreased  by 11% to
$3,798,000 as compared to $4,247,000 for the same period in 1997. The components
of revenues are sales, which consist of sales of the Company's two Food and Drug
Administration  ("FDA")  approved  products  and  royalties  on the sales of the
Company's products by others,  and contract  revenues.  Sales decreased by 9% to
$3,782,000  for  the  three  months  ended  December  31,  1998 as  compared  to
$4,140,000 for the same period in the prior year due to decreased  revenues from
ONCASPAR(R)  related to a temporary  labeling change and a revised  distribution
method for the product.  During the three months  ended  December 31, 1998,  the
Company  instituted  temporary  labeling  and  distribution   modifications  for
ONCASPAR  resulting  from  recent  difficulties  encountered  in  the  Company's
manufacturing  process  for  ONCASPAR.  This  modification  is the result of the
observation of increased  levels of particulates in certain batches of ONCASPAR,
which were  manufactured by the Company.  Until resolution of the  manufacturing
problem,  the Company,  rather than Rhone-Poulenc  Rorer  Pharmaceuticals,  Inc.
("RPR"),  will distribute ONCASPAR directly to patients on an "as-needed" basis,
which has resulted in a decline in  shipments  of  ONCASPAR,  as compared to the
prior  year.  Upon  resolution  of the  existing  manufacturing  problem,  it is
expected  that RPR  will  resume  the  normal  distribution  of  ONCASPAR.  This
manufacturing problem is isolated to ONCASPAR only. Prior year ONCASPAR revenues
are  comprised  of  manufacturing  revenues,  as well as  royalties  on sales of
ONCASPAR by the Company's  marketing  partner,  RPR.  ADAGEN sales for the three
months  ended  December  31,  1998  and 1997  were  $2,936,000  and  $2,800,000,
respectively.  The  increase  in ADAGEN  sales is the result of an  increase  in
patients receiving ADAGEN treatment from the prior year. During the three months
ended  December 31, 1998 and 1997,  the Company had export sales of $945,000 and
$642,000, respectively. Sales in Europe were $863,000 and $489,000 for the three
months ended December 31, 1998 and 1997, respectively.  Contract revenue for the
three  months  ended  December  31, 1998  decreased  to $16,000,  as compared to
$108,000 for the same period in the prior year.

     The Company  expects  sales of ADAGEN to increase  at  comparable  rates to
those achieved during the last two years as additional patients are treated. The
Company also  anticipates  that sales of ONCASPAR  may remain at reduced  levels
until the manufacturing issue, previously discussed,  is resolved.  There can be
no  assurance  that any  particular  sales  levels of ONCASPAR or ADAGEN will be
achieved or maintained.

Cost of Sales.  Cost of sales,  as a percentage  of sales,  remained  relatively
consistent at 27% for the three months ended December 31, 1998 and 1997.  During
the quarter ended December 31, 1998, the Company utilized  approximately  41% of
its manufacturing capacity for the production of its approved products.

Research and Development. Research and development expenses for the three months
ended  December 31, 1998 decreased by 7% to $1,848,000  from  $1,986,000 for the
same period in 1997. The decrease in research and 

                                       8

<PAGE>

development  expenses  resulted from a reduction in clinical  trial costs,  as a
result  of the  completion  of a Phase Ib  clinical  trial  for  PEG-hemoglobin.
Clinical   costs  are   anticipated   to   increase   in  future   quarters   as
PEG-camptothecin enters clinical trials. Due to the significant costs associated
with the development of  PEG-hemoglobin,  the Company is currently looking for a
medical  institution  or commercial  partner to bring this product into Phase II
clinical trials.

Selling,   General   and   Administrative   Expenses.   Selling,   general   and
administrative  expenses for the three months ended  December 31, 1998 increased
by 41% to $2,108,000, as compared to $1,498,000 for the same period in 1997. The
increase was  primarily  due to an increase in legal fees related to  litigation
and ongoing  arbitration  proceedings,  as well as increased  patent  filing and
defense costs.

Other Income/Expense. Other income/expense increased by $192,000 to $337,000 for
the three  months  ended  December 31, 1998 as compared to $145,000 for the same
period last year.  The increase  was  primarily  attributable  to an increase in
interest income due to an increase in interest bearing investments.

Six months ended December 31, 1998 vs. Six months ended December 31, 1997

Revenues.  Revenues for the six months ended  December 31, 1998 decreased by 24%
to  $6,786,000  as  compared  to  $8,917,000  for the same  period in 1997.  The
components  of revenues  are sales and  contract  revenues.  Sales  increased to
$6,718,000  for the six months ended December 31, 1998 as compared to $6,604,000
for the same  period in the prior year,  due to an  increase in ADAGEN  sales of
approximately  9%,  resulting  from an  increase in  patients  receiving  ADAGEN
treatment  from the prior year.  The increase in ADAGEN sales was offset in part
by a  decrease  in  ONCASPAR  revenues.  ONCASPAR  revenues  decreased  due to a
temporary change in the labeling and distribution of the product  resulting from
problems in the  manufacturing  process for  ONCASPAR.  ADAGEN sales for the six
months  ended  December  31,  1998  and 1997  were  $5,428,000  and  $4,994,000,
respectively. The increase in sales was offset by a decrease in contract revenue
for the six months.  Contract revenue for the six months ended December 31, 1998
decreased  to $67,000,  as compared to  $2,313,000  in 1997.  The  decrease  was
principally due to the timing of milestone payments received under the Company's
licensing   agreement  for   PEG-Intron  A  with   Schering-Plough   Corporation
("Schering-Plough").  During the six months ended December 31, 1997, the Company
recognized   $2,200,000   in  milestone   payments   received  as  a  result  of
Schering-Plough's  advancing  PEG-Intron  A into its first  Phase  III  clinical
trial.  PEG-Intron  A  is  a  modified  form  of  Schering-Plough's   INTRON(R)A
(interferon  alfa-2b,  recombinant),  developed  by Enzon to have  longer-acting
properties.  Under the  Company's  licensing  agreement,  Enzon is  entitled  to
royalties  on  product  sales and has the  option  to  become  Schering-Plough's
exclusive  manufacturer  of  PEG-Intron  A for the U.S.  market.  During the six
months  ended  December  31,  1998 and 1997,  the  Company  had export  sales of
$1,723,000 and  $1,129,000,  respectively.  Sales in Europe were  $1,487,000 and
$850,000 for the six months ended December 31, 1998 and 1997, respectively.

Cost of Sales. Cost of sales, as a percentage of sales, increased to 35% for the
six months  ended  December  31,  1998 as compared to 26% for the same period in
1997.  The increase  was  primarily  due to a charge taken in the first  quarter
related to ONCASPAR finished goods on hand and in the distribution  pipeline, as
well as increased ONCASPAR production costs. The increased write-off of ONCASPAR
finished goods was  attributable to the  manufacturing  problems  encountered in
1998.

Research and Development.  Research and development  expenses for the six months
ended December 31, 1998 decreased by 17% to $3,423,000  from  $4,133,000 for the
same period in 1997. The decrease in research and  development  expenses was due
to the  reduction in clinical  trial costs,  as a result of the  completion of a
Phase Ib clinical trial for  PEG-hemoglobin.  Clinical costs are  anticipated to
increase in future quarters as  PEG-camptothecin  enters clinical trials. Due to
the  significant  costs  associated  with the  development of this product,  the
Company is currently looking for a medical  institution or commercial partner to
bring this product into Phase II clinical trials

                                       9

<PAGE>

Selling,   General   and   Administrative   Expenses.   Selling,   general   and
administrative  expenses for the six months ended December 31, 1998 increased by
29% to  $3,644,000,  as compared to $2,827,000  for the same period in 1997. The
increase  is due to  increased  investor  and  public  relation  activities  and
increased legal fees.

Other Income/Expense. Other income/expense increased by $382,000 to $635,000 for
the six months  ended  December  31, 1998 as  compared to $253,000  for the same
period  last year.  The  increase  was  attributable  to an increase in interest
income due to an increase in interest bearing investments.

Liquidity and Capital Resources

     Enzon had $23,736,000 in cash and cash equivalents as of December 31, 1998.
The Company  invests its excess cash in a  portfolio  of  high-grade  marketable
securities and United States government-backed securities.

     The  Company's   cash  reserves  as  of  December  31,  1998  increased  by
$17,257,000  from June 30, 1998.  The increase in cash reserves was  principally
due to net proceeds of approximately  $17,550,000  received upon completion of a
private placement during July 1998 in which the Company sold 3,983,000 shares of
Common Stock to a small group of investors.

     The Company's exclusive U.S. marketing rights license with RPR for ONCASPAR
provides for a payment of $3,500,000 in advance  royalties which was received in
January 1995. Under the agreement, as amended,  royalties will be offset against
a credit of $5,970,000,  which represents the royalty advance plus reimbursement
of certain  amounts due RPR under the previous  agreement and interest  expense,
before cash payments will be made under the  agreement.  The royalty  advance is
shown as a long term liability with the  corresponding  current portion included
in accrued  expenses on the  consolidated  condensed  balance sheets and will be
reduced as royalties are recognized  under the agreement.  Through  December 31,
1998, an aggregate of  $4,445,000  in royalties  payable by RPR have been offset
against the original credit.

     As of December 31, 1998, 942,808 shares of Series A Cumulative  Convertible
Preferred Stock ("Series A Preferred  Stock") have been converted into 3,097,955
shares of the Company's common stock (the "Common Stock").  Accrued dividends on
the  converted  Series A Preferred  Stock in the  aggregate of  $1,824,000  were
settled by the issuance of 235,231 shares of Common Stock.  The Company does not
presently  intend to pay cash dividends on the Series A Preferred  Stock.  As of
December 31, 1998,  there were $1,877,000 of unpaid  dividends in arrears on the
Series A Preferred Stock. These dividends are payable in cash or Common Stock at
the Company's  option and accrue on the outstanding  Series A Preferred Stock at
the rate of $214,000 per year.

     To date, the Company's sources of cash have been the proceeds from the sale
of its stock through public and private  placements,  sales of ADAGEN,  sales of
ONCASPAR,  sales of its products for research  purposes,  contract  research and
development fees, technology transfer and license fees and royalty advances. The
Company's  current  sources of  liquidity  are its cash,  cash  equivalents  and
interest earned on such cash reserves, sales of ADAGEN, sales of ONCASPAR, sales
of its products for research purposes and license fees. Based upon its currently
planned  research and  development  activities and related costs and its current
sources of liquidity,  the Company anticipates its current cash reserves will be
sufficient to meet its capital and operational  requirements for the foreseeable
future.

     Upon  exhaustion  of the  Company's  current cash  reserves,  the Company's
continued  operations will depend on its ability to realize significant revenues
from the commercial sale of its products,  raise additional funds through equity
or debt  financing,  or obtain  significant  licensing,  technology  transfer or
contract  research and  development  fees.  There can be no assurance that these
sales, financings or revenue generating activities will be successful.

                                       10

<PAGE>

Year 2000

     The Company has completed a review of its business  systems,  including its
computer systems and manufacturing  equipment, and has queried its customers and
vendors as to their progress in identifying  and addressing  problems that their
systems may face in correctly  interpreting  and processing date  information as
the year 2000 approaches and is reached.  Based on this review,  the Company has
implemented a plan to achieve year 2000 compliance. The Company believes that it
will achieve year 2000 compliance no later than September 1999 in a manner which
will be non-disruptive to its operations. In addition, the Company has commenced
work on various types of contingency planning to address potential problem areas
with internal systems and with suppliers and other third parties,  although such
plans have not yet been  determined.  The Company expects to have completed much
contingency  planning by June 1999. Year 2000 compliance is not expected to have
a material  adverse  effect on the Company,  including the  Company's  financial
condition,  results of operations or cash flow. The Company  estimates the total
cost  (including  historical  costs  to date) of its  year  2000  efforts  to be
approximately $400,000. The total cost estimate is based on management's current
assessment and is subject to change.


Item 3.  Quantitative and Qualitative Disclosures About Market Risk

         Not applicable.


                                       11

<PAGE>

PART II OTHER INFORMATION

Item 2. Changes in Securities

     On July 21, 1998, the Company  issued a warrant to purchase  200,000 shares
of Common  Stock at an exercise  price of $6.50 per share to a  consultant.  The
warrant was issued in reliance  upon the  exemption  provided by Section 4(2) of
the Securities Act of 1933, as amended.


Item 4. Submission of Matters to a Vote of Security Holders

     (a) An annual meeting of stockholders was held on December 1, 1998.

     (b) The  directors  elected at the annual  meeting were Rolf A. Classon and
Robert LeBuhn. The term of office as a director for each of Dr. Rosina B. Dixon,
Dr. David W. Golde, A.M. "Don" MacKinnon,  Randy H. Thurman and Peter G. Tombros
continued after the annual meeting.

     (c) The  matters  voted upon at the annual  meeting  and the results of the
voting, including broker non-votes where applicable, are set forth below.

     (i) The stockholders  voted  21,833,748  shares in favor and 433,931 shares
against  with respect to the election of Rolf A. Classon as a Class III director
of the Company and  22,152,229  shares in favor and 115,450  shares against with
respect to the election of Robert LeBuhn as a Class III director of the Company.
Broker non-votes were not applicable.

     (ii) The  stockholders  voted  21,335,982  shares in favor,  760,448 shares
against  with  respect to a  proposal  to approve  amendments  to the  Company's
Non-Qualified  Stock  Option  Plan,  as  amended.   Broker  non-votes  were  not
applicable.

     (iii) The stockholders voted 21,981,048 shares in favor and 286,631 against
with  respect to a proposal  to ratify  the  selection  of KPMG LLP to audit the
Company's  consolidated financial statements for the fiscal year ending June 30,
1999. Broker non-votes were not applicable.

                                       12

<PAGE>

Item 6. Exhibits and Reports on Form 8-K

(a) Exhibits (numbered in accordance with Item 601 of Regulation S-K).

<TABLE>
<CAPTION>
                                                                                                         Page Number
                                                                                                              or
      Exhibit                                                                                            Incorporation
      Number      Description                                                                            By Reference
      ------      -----------                                                                            ------------
<S>                                                                                                      <C>
        3(i)  Certificate of Incorporation, as amended                                                            ~~
       3(ii)  By-laws, as amended                                                                             *(4.2)
      3(iii)  Certificate of Designations, Preferences and Rights of Series D Convertible
                Preferred Stock                                                                             ^^3(iii)
       3(iv)  Amendment to Certificate of Incorporation dated January 5, 1998                                ##3(iv)
        10.0  Employment Agreement dated March 25, 1994 with Peter G. Tombros                            ++++(10.17)
        10.1  Form of Change of Control Agreements dated as of January 20, 1995 entered
                into with the Company's Executive Officers                                                 ###(10.2)
        10.2  Lease - 300-C Corporate Court, South Plainfield, New Jersey                                  ***(10.3)
        10.4  Lease Termination Agreement dated March 31, 1995 for
                20 Kingsbridge Road and 40 Kingsbridge Road, Piscataway, New Jersey                        ###(10.6)
        10.5  Option Agreement dated April 1, 1995 regarding 20 Kingsbridge Road,
                Piscataway, New Jersey                                                                     ###(10.7)
        10.6  Form of Lease - 40 Cragwood Road, South Plainfield, New Jersey                              ****(10.9)
        10.7  Lease 300A-B Corporate Court, South Plainfield, New Jersey                                   ++(10.10)
        10.8  Stock Purchase Agreement dated March 5, 1987 between the Company and
                Eastman Kodak Company                                                                     ****(10.7)
        10.9  Amendment dated June 19, 1989 to Stock Purchase Agreement between the
                Company and Eastman Kodak Company                                                          **(10.10)
       10.10    Form of Stock  Purchase  Agreement  between  the Company and the
                purchasers of the Series A Cumulative
                Convertible Preferred Stock                                                                 +(10.11)
       10.11  Amendment to License Agreement and Revised License Agreement
                between the Company and RCT dated April 25, 1985                                           +++(10.5)
       10.12  Amendment dated as of May 3, 1989 to Revised License Agreement
                dated April 25, 1985 between the Company and Research Corporation                          **(10.14)
       10.13  License Agreement dated September 7, 1989 between the Company and
                Research Corporation Technologies, Inc.                                                    **(10.15)
       10.14  Master Lease Agreement and Purchase Leaseback Agreement dated
                October 28, 1994 between the Company and Comdisco, Inc.                                     #(10.16)
       10.15  Employment Agreement with Peter G. Tombros dated as of
                April 5, 1997                                                                              ^^(10.15)
       10.16  Stock Purchase Agreement dated as of June 30, 1995                                            ~(10.16)
       10.17  Securities Purchase Agreement dated as of January 31, 1996                                    ~(10.17)
       10.18  Registration Rights Agreements dated as of January 31, 1996                                   ~(10.18)
       10.19  Warrants dated as of February 7, 1996 and issued pursuant to the Securities
                Purchase Agreement dated as of January 31, 1996                                             ~(10.19)
       10.20  Securities Purchase Agreement dated as of March 15, 1996                                     ~~(10.20)
       10.21  Registration Rights Agreement dated as of March 15, 1996                                     ~~(10.21)
       10.22  Warrant dated as of March 15, 1996 and issued pursuant to the Securities 
</TABLE>

                                       13

<PAGE>

<TABLE>
<S>                                                                                                      <C>
              Purchase Agreement dated as of March 15, 1996                                                ~~(10.22)
       10.23  Amendment dated March 25, 1994 to License Agreement dated
                September 7, 1989 between the Company and Research Corporation
                Technologies, Inc.                                                                        ~~~(10.23)
       10.24  Independent Directors' Stock Plan                                                           ~~~(10.24)
       10.25  Stock Exchange Agreement dated February 28, 1997, by and between the
                Company and GFL Performance Fund Ltd.                                                       ^(10.25)
       10.26  Agreement Regarding Registration Rights Under Registration Rights Agreement
                dated March 10, 1997, by and between the Company and Clearwater Fund IV
                LLC                                                                                         ^(10.26)
       10.27  Common Stock Purchase Agreement dated June 25, 1998                                         ^^^(10.27)
       10.28  Placement Agent Agreement dated June 25, 1998 with SBC Warburg
                Dillon Read, Inc.                                                                        ^^^^(10.28)
        27.0  Financial Data Schedule                                                                              o
        99.0  Factors to Consider in Connection with Forward-Looking Statements                           ^^^^(99.0)
</TABLE>



o    Filed herewith.

*    Previously filed as an exhibit to the Company's  Registration  Statement on
     Form S-2 (File No. 33-34874) and incorporated herein by reference thereto.

**   Previously  filed as exhibits to the  Company's  Annual Report on Form 10-K
     for the  fiscal  year  ended  June 30,  1989  and  incorporated  herein  by
     reference thereto.

***  Previously filed as an exhibit to the Company's  Registration  Statement on
     Form S-18  (File  No.  2-88240-NY)  and  incorporated  herein by  reference
     thereto.

**** Previously  filed as exhibits to the  Company's  Registration  Statement on
     Form S-1 (File No.  2-96279)  filed with the  Commission  and  incorporated
     herein by reference thereto.

+    Previously filed as an exhibit to the Company's  Registration  Statement on
     Form S-1 (File No.  33-39391)  filed with the Commission  and  incorporated
     herein by reference thereto.

++   Previously  filed as an exhibit to the Company's Annual Report on Form 10-K
     for the  fiscal  year  ended  June 30,  1993  and  incorporated  herein  by
     reference thereto.

+++  Previously  filed as an exhibit to the Company's Annual Report on Form 10-K
     for the  fiscal  year  ended  June 30,  1985  and  incorporated  herein  by
     reference thereto.

++++ Previously filed as an exhibit to the Company's  Current Report on Form 8-K
     dated April 5, 1994 and incorporated herein by reference thereto.

#    Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the quarter  ended  December 31, 1994 and  incorporated  herein by
     reference thereto.

##   Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the quarter  ended  December 31, 1997 and  incorporated  herein by
     reference thereto.

                                       15

<PAGE>

###  Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the  quarter  ended  March  31,  1995 and  incorporated  herein by
     reference thereto.

~    Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the quarter  ended  December 31, 1995 and  incorporated  herein by
     reference thereto.

~~   Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the  quarter  ended  March  31,  1996 and  incorporated  herein by
     reference thereto.

~~~  Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the quarter  ended  December 31, 1996 and  incorporated  herein by
     reference thereto.

^    Previously  filed as an exhibit to the Company's  Quarterly  Report on Form
     10-Q for the  quarter  ended  March  31,  1997 and  incorporated  herein by
     reference thereto.

^^   Previously  filed as an exhibit to the Company's Annual Report on Form 10-K
     for the year  ended  June 30,  1997 and  incorporated  herein by  reference
     thereto.

^^^  Previously filed as an exhibit to the Company's  Registration  Statement on
     Form S-3 (File No.  333-58269)  filed with the Commission and  incorporated
     herein by reference thereto.

^^^^ Previously  filed as an exhibit to the Company's Annual Report on Form 10-K
     for the year  ended  June 30,  1998 and  incorporated  herein by  reference
     thereto.


     (b)  Reports on Form 8-K

          On November 4, 1998,  the Company filed with the  Commission a Current
     Report on Form 8-K dated November 2, 1998, related to an agreement with the
     FDA for temporary labeling and distribution  modifications for ONCASPAR(R),
     due to the recent  observation that  particulate  matter has formed in some
     ONCASPAR vials. The Company will distribute  ONCASPAR  directly to patients
     on an as needed basis during the temporary period.

          On December 7, 1998,  the Company filed with the  Commission a Current
     Report on Form 8-K dated November 20, 1998,  related to the  advancement of
     PEG-Intron A(R), a long-acting dose formulation of Schering-Plough's Intron
     A(R), into Phase III clinical trials for chronic myelogenous leukemia.


                                       15

<PAGE>

                                   SIGNATURES

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                            ENZON, INC.
                                            (Registrant)



Date: February 12, 1999                     By: /s/Peter G. Tombros
                                                ---------------------------
                                                Peter G. Tombros
                                                President and Chief Executive
                                                  Officer


                                            By: /s/Kenneth J. Zuerblis 
                                                ---------------------------
                                                Kenneth J. Zuerblis
                                                Vice President, Finance and
                                                  Chief Financial Officer


                                       16


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
This schedule contains summary financial  information  extracted from the Enzon,
Inc. and Subsidiaries  Consolidated  Condensed  Balance Sheet as of December 31,
1998 and the  Consolidated  Condensed  Statement of Operations for the three and
six months ended December 31, 1998 and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
       
<S>                             <C>                         <C>
<PERIOD-TYPE>                   3-MOS                       6-MOS
<FISCAL-YEAR-END>                     JUN-30-1999                JUN-30-1999 
<PERIOD-END>                          DEC-31-1998                DEC-31-1998 
<CASH>                                 23,735,645                 23,735,645 
<SECURITIES>                                    0                          0 
<RECEIVABLES>                           3,942,542                  3,942,542 
<ALLOWANCES>                                    0                          0 
<INVENTORY>                             1,220,933                  1,220,933 
<CURRENT-ASSETS>                       30,326,566                 30,326,566 
<PP&E>                                 12,453,041                 12,453,041 
<DEPRECIATION>                         11,127,657                 11,127,657 
<TOTAL-ASSETS>                         33,602,382                 33,602,382 
<CURRENT-LIABILITIES>                   5,967,240                  5,967,240 
<BONDS>                                         0                          0 
                           0                          0 
                                 1,070                      1,070 
<COMMON>                                  359,786                    359,786 
<OTHER-SE>                             26,323,457                 26,323,457 
<TOTAL-LIABILITY-AND-EQUITY>           33,602,382                 33,602,382 
<SALES>                                 3,782,411                  6,718,113 
<TOTAL-REVENUES>                        3,797,921                  6,785,588 
<CGS>                                   1,028,945                  2,338,796 
<TOTAL-COSTS>                           4,984,886                  9,405,362 
<OTHER-EXPENSES>                                0                          0 
<LOSS-PROVISION>                                0                          0 
<INTEREST-EXPENSE>                          2,619                      8,055 
<INCOME-PRETAX>                          (850,165)                (1,985,114)
<INCOME-TAX>                                    0                          0 
<INCOME-CONTINUING>                      (850,165)                (1,985,114)
<DISCONTINUED>                                  0                          0 
<EXTRAORDINARY>                                 0                          0 
<CHANGES>                                       0                          0 
<NET-INCOME>                             (850,165)                (1,985,114)
<EPS-PRIMARY>                               (0.03)                     (0.06)
<EPS-DILUTED>                               (0.03)                     (0.06)
        


</TABLE>


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