1
 
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                   FORM 10-Q
 
(MARK ONE)
[ ]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934
 
                FOR THE QUARTERLY PERIOD ENDED JANUARY 23, 1998
 
                                       OR
 
[X]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
 
                         FOR THE TRANSITION PERIOD FROM
                               --------------- TO
                                ---------------
 
                         COMMISSION FILE NUMBER 0-27130
 
                            NETWORK APPLIANCE, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 

                                                 
                    CALIFORNIA                                          77-0307520
 (STATE OR OTHER JURISDICTION OF INCORPORATION OR               IRS EMPLOYER IDENTIFICATION
                    ORGANIZATION
 
2770 SAN TOMAS EXPRESSWAY, SANTA CLARA, CALIFORNIA                         95051
     (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                           (ZIP CODE)

 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (408) 367-3000
 
     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 the number of shares outstanding of the issuer's class of common
stock, as of the latest practicable date.
 


                                                                      OUTSTANDING AT
                       CLASS                                         JANUARY 23, 1998
                       -----                                         ----------------
                                                 
                   Common Stock                                         33,515,805

 
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   2
 
                               TABLE OF CONTENTS
 


                                                                       PAGE
                                                                       ----
                                                                 
                       PART I. FINANCIAL INFORMATION
Item 1.  Condensed Consolidated Financial Statements
         Condensed Consolidated Balance Sheets as of January 23, 1998
         and April 30, 1997..........................................    3
         Condensed Consolidated Statements of Income for the three
         and nine-month periods ended January 23, 1998 and January
         24, 1997....................................................  4-5
         Condensed Consolidated Statements of Cash Flows for the
         nine-month periods ended January 23, 1998 and January 24,
         1997........................................................    6
         Notes to Condensed Consolidated Financial Statements........    7
Item 2.  Management's Discussion and Analysis of Financial Condition
         and Results of Operations...................................    9

                        PART II. OTHER INFORMATION
Item 1.  Legal Proceedings...........................................   13
Item 2.  Changes in Securities.......................................   13
Item 3.  Defaults Upon Senior Securities.............................   13
Item 4.  Submission of Matters to a Vote of Securityholders..........   13
Item 5.  Other Information...........................................   13
Item 6.  Exhibits and Reports on Form 8-K............................   13
SIGNATURE............................................................   14

 
                                        2
   3
 
                         PART I. FINANCIAL INFORMATION
 
ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
 
                            NETWORK APPLIANCE, INC.
 
                     CONDENSED CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
 


                                                               JANUARY 23, 1998   APRIL 30, 1997
                                                               ----------------   --------------
                                                                 (UNAUDITED)
 
                                     ASSETS
 
                                                                            
CURRENT ASSETS:
  Cash and cash equivalents.................................       $39,302           $21,520
  Short-term investments....................................         5,250             6,916
  Accounts receivable, net..................................        26,684            13,911
  Inventories...............................................         9,045             9,920
  Prepaid expenses and other................................         1,936             1,253
  Deferred taxes............................................         3,177             3,100
                                                                   -------           -------
          Total current assets..............................        85,394            56,620
                                                                   -------           -------
PROPERTY AND EQUIPMENT, NET.................................        10,564             9,238
OTHER ASSETS................................................         2,950             3,083
                                                                   -------           -------
                                                                   $98,908           $68,941
                                                                   =======           =======
 
                              LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES:
  Accounts payable..........................................       $ 6,904           $ 4,415
  Income taxes payable......................................         2,680             1,023
  Accrued compensation and related benefits.................         7,099             4,666
  Other accrued liabilities.................................         4,017             2,280
  Deferred revenue..........................................         4,422             2,317
                                                                   -------           -------
          Total current liabilities.........................        25,122            14,701
                                                                   -------           -------
LONG-TERM OBLIGATIONS.......................................           170               211
SHAREHOLDERS' EQUITY:
  Common stock..............................................        59,579            54,653
  Retained earnings (Accumulated deficit)...................        14,037              (624)
                                                                   -------           -------
          Total shareholders' equity........................        73,616            54,029
                                                                   -------           -------
                                                                   $98,908           $68,941
                                                                   =======           =======

 
     See accompanying notes to condensed consolidated financial statements.
 
                                        3
   4
 
                            NETWORK APPLIANCE, INC.
 
                  CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                  (UNAUDITED)
 


                                                                       THREE MONTHS ENDED
                                                              ------------------------------------
                                                              JANUARY 23, 1998    JANUARY 24, 1997
                                                              ----------------    ----------------
                                                                            
NET SALES...................................................      $43,984             $24,845
COST OF SALES...............................................       17,880              10,116
                                                                  -------             -------
  Gross margin..............................................       26,104              14,729
                                                                  -------             -------
 
OPERATING EXPENSES:
  Sales and marketing.......................................       11,187               6,438
  Research and development..................................        4,420               2,283
  General and administrative................................        1,852               1,049
                                                                  -------             -------
     Total operating expenses...............................       17,459               9,770
                                                                  -------             -------
 
INCOME FROM OPERATIONS......................................        8,645               4,959
OTHER INCOME, NET...........................................          243                 241
                                                                  -------             -------
INCOME BEFORE INCOME TAXES..................................        8,888               5,200
PROVISION FOR INCOME TAXES..................................        3,333               1,820
                                                                  -------             -------
NET INCOME..................................................      $ 5,555             $ 3,380
                                                                  =======             =======
NET INCOME PER SHARE:
  Basic.....................................................      $  0.17             $  0.11
                                                                  =======             =======
  Diluted...................................................      $  0.15             $  0.10
                                                                  =======             =======
WEIGHTED AVERAGE COMMON SHARES..............................       32,711              30,829
                                                                  =======             =======
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES........       36,250              35,030
                                                                  =======             =======

 
     See accompanying notes to condensed consolidated financial statements.
 
                                        4
   5
 
                            NETWORK APPLIANCE, INC.
 
                  CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                  (UNAUDITED)
 


                                                                       NINE MONTHS ENDED
                                                              -----------------------------------
                                                              JANUARY 23, 1998   JANUARY 24, 1997
                                                              ----------------   ----------------
                                                                           
NET SALES...................................................      $115,805           $64,353
COST OF SALES...............................................        47,196            26,292
                                                                  --------           -------
     Gross margin...........................................        68,609            38,061
                                                                  --------           -------
OPERATING EXPENSES:
  Sales and marketing.......................................        29,352            16,644
  Research and development..................................        11,738             5,986
  General and administrative................................         4,701             3,201
  Litigation settlement.....................................            --             4,300
                                                                  --------           -------
     Total operating expenses...............................        45,791            30,131
                                                                  --------           -------
 
INCOME FROM OPERATIONS......................................        22,818             7,930
OTHER INCOME, NET...........................................           640               793
                                                                  --------           -------
INCOME BEFORE INCOME TAXES..................................        23,458             8,723
PROVISION FOR INCOME TAXES..................................         8,797             3,053
                                                                  --------           -------
NET INCOME..................................................      $ 14,661           $ 5,670
                                                                  ========           =======
NET INCOME PER SHARE:
  Basic.....................................................      $   0.45           $  0.19
                                                                  ========           =======
  Diluted...................................................      $   0.41           $  0.16
                                                                  ========           =======
WEIGHTED AVERAGE COMMON SHARES..............................        32,281            30,351
                                                                  ========           =======
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES........        35,724            34,731
                                                                  ========           =======

 
     See accompanying notes to condensed consolidated financial statements.
 
                                        5
   6
 
                            NETWORK APPLIANCE, INC.
 
                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                  (UNAUDITED)
 


                                                                       NINE MONTHS ENDED
                                                              ------------------------------------
                                                              JANUARY 23, 1998    JANUARY 24, 1997
                                                              ----------------    ----------------
                                                                            
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income................................................      $ 14,661            $  5,670
  Adjustments to reconcile net income to net cash provided
     by operating activities:
     Depreciation and amortization..........................         3,885               1,967
     Provision for doubtful accounts........................           216                  --
     Deferred income taxes..................................           (77)                 --
     Deferred rent..........................................           (29)                (52)
     Changes in assets and liabilities:
       Accounts receivable..................................       (12,989)             (7,006)
       Inventories..........................................           875              (4,760)
       Prepaid expenses and other assets....................          (764)               (674)
       Accounts payable.....................................         2,489               2,892
       Income taxes payable.................................         1,657                 208
       Accrued compensation and related benefits............         2,433               1,116
       Other accrued liabilities............................         1,737               1,068
       Deferred revenue.....................................         2,105               1,426
                                                                  --------            --------
          Net cash provided by operating activities.........        16,199               1,855
                                                                  --------            --------
 
CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchases of short-term investments.......................        (7,600)            (13,200)
  Redemptions of short-term investments.....................         9,266               9,332
  Purchases of property and equipment.......................        (4,886)             (3,206)
                                                                  --------            --------
          Net cash used in investing activities.............        (3,220)             (7,074)
                                                                  --------            --------
 
CASH FLOWS FROM FINANCING ACTIVITIES:
  Repayments of long-term obligations.......................           (12)                (12)
  Proceeds from sale of common stock, net...................         4,815               1,532
                                                                  --------            --------
          Net cash provided by financing activities.........         4,803               1,520
                                                                  --------            --------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS........        17,782              (3,699)
 
CASH AND CASH EQUIVALENTS:
  Beginning of period.......................................        21,520              24,637
                                                                  --------            --------
  End of period.............................................      $ 39,302            $ 20,938
                                                                  ========            ========
NONCASH INVESTING AND FINANCING ACTIVITIES:
  Deferred stock compensation...............................      $    714            $     --

 
     See accompanying notes to condensed consolidated financial statements.
 
                                        6
   7
 
                            NETWORK APPLIANCE, INC.
 
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (UNAUDITED)
 
 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
 
     The accompanying condensed consolidated financial statements have been
prepared by Network Appliance, Inc. (the Company) without audit and reflect all
adjustments which are, in the opinion of management, necessary for a fair
presentation of the financial position and the results of operations of the
Company for the interim periods. The statements have been prepared in accordance
with the regulations of the Securities and Exchange Commission (SEC).
Accordingly, they do not include all information and footnotes required by
generally accepted accounting principles. The results of operations for the
three and nine-month periods ended January 23, 1998 are not necessarily
indicative of the operating results to be expected for the full fiscal year or
future operating periods. The information included in this report should be read
in conjunction with the audited consolidated financial statements and notes
thereto for the fiscal year ended April 30, 1997 and the risk factors as set
forth in the Company's Annual Report on Form 10-K, including, without
limitation, risks relating to history of operating losses, fluctuating operating
results, dependence on new products, rapid technological change, dependence on
growth in the network file server market, expansion of international operations,
product concentration, changing product mix, competition, recent management
additions, management of expanding operations, dependence on high-quality
components, dependence on proprietary technology, intellectual property rights,
dependence on key personnel, volatility of stock price, shares eligible for
future sale and the effect of certain anti-takeover provisions. Any party
interested in reviewing these publicly available documents should contact the
SEC or the Chief Financial Officer of the Company.
 
 2. INVENTORIES
 
     Inventories consist of the following (in thousands):
 


                                                  JANUARY 23, 1998    APRIL 30, 1997
                                                  ----------------    --------------
                                                                
Purchased components............................       $2,950             $6,775
Work in process.................................        1,934              1,524
Finished goods..................................        4,161              1,621
                                                       ------             ------
                                                       $9,045             $9,920
                                                       ======             ======

 
 3. COMMON STOCK AND NET INCOME PER SHARE
 
     On September 25, 1997, the Company's shareholders approved a 1,600,000
share increase (3,200,000 on a post-split basis) in the number of shares of
common stock authorized for issuance under the Network Appliance 1995 Stock
Incentive Plan. On November 11, 1997, the Board of Directors approved a
two-for-one stock split of the Company's common stock which was effective
December 18, 1997. The net income per share and number of shares used in the
per-share calculations for all periods presented reflect the two-for-one stock
split that was effective December 18, 1997.
 
     The Company adopted Statement of Financial Accounting Standards No. 128,
"Earnings per Share" (SFAS 128), during the third quarter of fiscal 1998. SFAS
128 requires a dual presentation of basic and diluted net income per share.
Basic net income per share is computed using the weighted average number of
common shares outstanding for the period. Diluted net income per share is
computed using the weighted average number of common and common equivalent
shares outstanding during the period. Common equivalent shares include stock
options (using the treasury stock method). Common equivalent shares are excluded
from the computation if their effect is anti-dilutive.
 
     Net income per share data for the three and nine-month periods ended
January 24, 1997 has been restated to conform with SFAS 128.
 
                                        7
   8
                            NETWORK APPLIANCE, INC.
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                                  (UNAUDITED)
 
     The following is a reconciliation of the numerators and denominators of the
basic and diluted net income per share computations for the periods presented
(in thousands, except per share amounts):
 


                                             THREE MONTHS ENDED                      NINE MONTHS ENDED
                                     -----------------------------------    -----------------------------------
                                     JANUARY 23, 1998   JANUARY 24, 1997    JANUARY 23, 1998   JANUARY 24, 1997
                                     ----------------   ----------------    ----------------   ----------------
                                                                                   
NET INCOME (NUMERATOR):
  Net income, basic and diluted....      $ 5,555            $ 3,380             $14,661            $ 5,670
                                         =======            =======             =======            =======
SHARES (DENOMINATOR):
  Weighted average common shares
     outstanding...................       33,352             32,262              33,117             32,289
  Weighted average common shares
     outstanding subject to
     repurchase....................         (641)            (1,433)               (836)            (1,938)
                                         -------            -------             -------            -------
  Shares used in basic
     computation...................       32,711             30,829              32,281             30,351
                                         =======            =======             =======            =======
  Weighted average common shares
     outstanding subject to
     repurchase....................          641              1,433                 836              1,938
  Weighted average common
     equivalent shares.............        2,898              2,768               2,607              2,442
                                         -------            -------             -------            -------
  Shares used in diluted
     computation...................       36,250             35,030              35,724             34,731
                                         =======            =======             =======            =======
NET INCOME PER SHARE:
  Basic............................      $  0.17            $  0.11             $  0.45            $  0.19
                                         =======            =======             =======            =======
  Diluted..........................      $  0.15            $  0.10             $  0.41            $  0.16
                                         =======            =======             =======            =======

 
     Options to purchase 124,000 and 51,000 shares during the three-month
periods ended January 23, 1998 and January 24, 1997, respectively, and 841,000
and 825,000 shares during the nine months then ended, respectively, were
outstanding but excluded from the diluted net income per share computations
because the exercise prices were greater than the average market prices of
common shares.
 
4. LITIGATION SETTLEMENT
 
     The computer industry is characterized by frequent litigation regarding
intellectual property rights. During fiscal 1995, a lawsuit of this nature was
filed against the Company and two of its shareholders (the Whipsaw Litigation).
During the first quarter of fiscal 1997, the Company settled the Whipsaw
litigation and recorded a pre-tax expense of $4.3 million ($3.5 million in
payments to the plaintiffs and $0.8 million in legal fees). In connection with
the settlement, the Whipsaw group released the Company from all liabilities.
 
5. RECENTLY ISSUED ACCOUNTING STANDARDS
 
     In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 130 "Reporting Comprehensive Income," which
is effective for fiscal years beginning after December 15, 1997. The adoption is
not expected to have a material effect on the financial statements.
 
     In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 131, "Disclosures About Segments of an
Enterprise and Related Information" (SFAS 131). This statement requires that
financial information be reported on the basis used internally for evaluating
segment performance and deciding how to allocate resources to segments. SFAS 131
will be effective for the Company's fiscal year 1999 and requires restatement of
all previously reported information for comparative purposes.
 
     The Financial Accounting Standards Board recently approved the American
Institute of Certified Public Accountants Statement of Position 97-2 (SOP 97-2)
on software revenue recognition which will be effective for the Company's fiscal
year 1999. The Company is currently assessing the impact of SOP 97-2 on its
revenue recognition policies.
 
                                        8
   9
 
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS
 
RESULTS OF OPERATIONS
 
     The following table sets forth certain consolidated statements of income
data as a percentage of net sales for the periods indicated:
 


                                                   THREE MONTHS ENDED              NINE MONTHS ENDED
                                              ----------------------------    ----------------------------
                                              JANUARY 23,     JANUARY 24,     JANUARY 23,     JANUARY 24,
                                                  1998            1997            1998            1997
                                              ------------    ------------    ------------    ------------
                                                                                  
Net Sales...................................     100.0%          100.0%          100.0%          100.0%
Cost of Sales...............................      40.7            40.7            40.8            40.9
                                                 -----           -----           -----           -----
          Gross margin......................      59.3            59.3            59.2            59.1
                                                 -----           -----           -----           -----
Operating Expenses:
  Sales and marketing.......................      25.4            25.9            25.3            25.8
  Research and development..................      10.0             9.2            10.1             9.3
  General and administrative................       4.2             4.2             4.1             5.0
  Litigation settlement.....................        --              --              --             6.7
                                                 -----           -----           -----           -----
          Total operating expenses..........      39.6            39.3            39.5            46.8
                                                 -----           -----           -----           -----
Income from operations......................      19.7            20.0            19.7            12.3
Other income, net...........................       0.5             0.9             0.6             1.2
                                                 -----           -----           -----           -----
Income before income taxes..................      20.2            20.9            20.3            13.5
Provision for income taxes..................       7.6             7.3             7.6             4.7
                                                 -----           -----           -----           -----
          Net Income........................      12.6%           13.6%           12.7%            8.8%
                                                 =====           =====           =====           =====

 
     Net Sales -- Net sales were $44.0 million for the three months ended
January 23, 1998 and $115.8 million for the nine months ended January 23, 1998,
representing increases of 77.0% and 80.0%, respectively, over the comparable
periods of the prior fiscal year. The increase in net sales for these periods
was principally attributable to a higher volume of filers shipped. The increase
in unit shipments resulted primarily from the Company's expansion of its direct
sales force and the introduction of new products during June and July 1997,
particularly the enterprise-class NetApp(TM) F630, the NetApp F520 and the
NetApp F230. Net sales also grew for the three and nine-month periods as a
result of increased multiprotocol system shipments, the licensing of
multiprotocol software to pre-existing customers and increased service and
software subscription revenues due to a growing installed base.
 
     International net sales (including United States exports) grew by 166.0%
and 156.1% for the three and nine-month periods ended January 23, 1998,
respectively, compared to comparable periods of the prior fiscal year.
International net sales were $11.7 million, or 26.6% of total net sales, and
$27.7 million, or 24.0% of total net sales, for three and nine months ended
January 23, 1998, respectively. The increase in international net sales was
primarily a result of European sales growth.
 
     There can be no assurance that the Company's net sales will continue to
increase in absolute dollars or at the rate at which they have grown in recent
fiscal periods.
 
     Gross Margin -- For the three months ended January 23, 1998, compared to
the comparable period of the prior fiscal year, gross margin as a percentage of
net sales remained at 59.3%. For the nine months ended January 23, 1998, gross
margin increased to 59.2% of net sales compared to 59.1% of net sales for the
comparable period of the prior fiscal year. This increase in gross margin was
primarily attributable to the increase in product volume, lower costs of key
components, increased manufacturing efficiencies and by the sale of the
Company's new product with cost-reduced designs first introduced in June and
July 1997. Gross margin was also favorably impacted by the licensing of
multiprotocol software and by growth in software subscription and service
revenues due to a growing installed base. Factors contributing to gross margin
growth were partially offset by the sale of 4 gigabyte drives at reduced prices
in the first and second quarters of the current fiscal year.
 
                                        9
   10
 
     The Company's gross margin has been and will continue to be affected by a
variety of factors, including competition, product configuration, direct versus
indirect sales, the mix and average selling prices of products, including
software licensing, new product introductions and enhancements and the cost of
components and manufacturing labor. In particular, the Company's gross margin
varies based upon the configuration of systems that are sold and whether they
are sold directly or through indirect channels. Highly configured systems
typically generate lower overall gross margin percentages due to greater disk
drive and memory content.
 
     Sales and Marketing -- Sales and marketing expenses consist primarily of
salaries, commissions, advertising and promotional expenses and customer service
and support costs. Sales and marketing expenses increased 73.8% to $11.2 million
for the three months ended January 23, 1998, compared to $6.4 million for the
three months ended January 24, 1997. For the nine months ended January 23, 1998,
sales and marketing expenses of $29.4 million reflect an increase of 76.4% over
the comparable period of the prior fiscal year. Sales and marketing expenses
were 25.4% and 25.9% of net sales for the three months ended January 23, 1998
and January 24, 1997, respectively, and were 25.3% and 25.8%, respectively, of
net sales for the nine months then ended. The increase in absolute dollars was
primarily related to the expansion of the Company's sales and marketing
organization, including growth in the domestic and international direct sales
forces and increased commission expenses. During the quarter ended January 23,
1998, the Company launched an advertising campaign which contributed to absolute
dollar growth in sales and marketing expenses for the three and nine-month
periods of the current fiscal year. Sales and marketing expenses are expected to
increase in an effort to expand domestic and international markets, introduce
new products, establish and expand new distribution channels and increase
product and company awareness. The Company believes that its continued growth
and profitability is dependent in part on the successful expansion of its
international operations, and therefore, has committed significant resources to
international sales.
 
     Research and Development -- Research and development expenses consist
primarily of salaries and benefits and prototype expenses. Research and
development expenses increased 93.6% to $4.4 million for the three months ended
January 23, 1998 from $2.3 million for the three months ended January 24, 1997.
These expenses represented 10.0% and 9.2% of net sales for the quarters ended
January 23, 1998 and January 24, 1997, respectively. For the nine-month periods,
research and development expenses increased 96.1% to $11.7 million in fiscal
1998 from $6.0 million in fiscal 1997 and represented 10.1% and 9.3% of net
sales, respectively, for those periods. Expenses for the three and nine-month
periods increased as a result of increased headcount, prototyping expenses
associated with the development of new products and ongoing support of current
and future product development and enhancement efforts. The Company believes
that significant investments in research and development will be required to
remain competitive and expects that such expenditures will continue to increase
in absolute dollars. For the three and nine months ended January 23, 1998 and
January 24, 1997, no software development costs were capitalized as amounts that
qualified for capitalization were immaterial.
 
     General and Administrative -- General and administrative expenses were $1.9
million for the three months ended January 23, 1998, compared to $1.0 million
for the three months ended January 24, 1997. These expenses represented 4.2% of
net sales for both periods. For the nine-month periods, general and
administrative expenses increased 46.9% to $4.7 million in fiscal 1998 from $3.2
million in fiscal 1997 and represented 4.1% and 5.0% of net sales, respectively,
for those periods. Increases in absolute dollars related primarily to increased
headcount, growth in professional services fees and an increase to the allowance
for bad debt. The Company believes that its general and administrative expenses
will increase as the Company continues to build its infrastructure.
 
     Litigation Settlement -- The computer industry is characterized by frequent
litigation regarding intellectual property rights. During fiscal 1995, a lawsuit
of this nature was filed against the Company and two of its shareholders (the
Whipsaw Litigation). During the first quarter of fiscal 1997, the Company
settled the Whipsaw litigation and recorded a pre-tax expense of $4.3 million
($3.5 million in payments to the plaintiffs and $0.8 million in legal fees). In
connection with the settlement, the Whipsaw group released the Company from all
liabilities.
 
                                       10
   11
 
     Other Income, net -- Other income, net, was $0.2 million for both the three
months ended January 23, 1998 and January 24, 1997. For the nine months ended
January 23, 1998, other income, net was $0.6 million, compared to $0.8 million
in the corresponding period of the prior year. For the nine months ended January
23, 1998, other income, net, decreased over the corresponding period of the
prior year due primarily to foreign currency exchange losses recorded in the
current fiscal year.
 
     Provision for Income Taxes -- The Company's effective tax rate during the
three and nine months ended January 23, 1998 was 37.5% compared with 35.0% for
the corresponding periods of the prior year. The higher tax rate in fiscal 1998
relates to increased earnings, which reduce the impact of research and
development and other tax credits on the effective tax rate. Additionally,
fiscal 1997 included a benefit for the reversal of a valuation allowance
previously provided against deferred tax assets which will not occur in fiscal
1998.
 
     The Company's quarterly operating results have in the past varied and may
in the future vary significantly depending on a number of factors, including:
the level of competition; the size and timing of significant orders; product
configuration and mix; market acceptance of new products and product
enhancements; new product announcements or introductions by the Company or its
competitors; deferrals of customer orders in anticipation of new products or
product enhancements; changes in pricing by the Company or its competitors; the
ability of the Company to develop, introduce and market new products and product
enhancements on a timely basis; hardware component costs; supply constraints;
the Company's success in expanding its sales and marketing programs;
technological changes in the network file server market; the mix of sales among
the Company's sales channels; levels of expenditure on research and development;
changes in Company strategy; personnel changes; the Company's ability to
successfully expand international operations; general economic trends and other
factors.
 
     The Company conducts business internationally. Accordingly, the Company's
future operating results could be materially adversely affected by a variety of
uncontrollable and changing factors including foreign currency exchange rates,
regulatory, political or economic conditions in a specific country or region,
trade protection measures and other regulatory requirements and government
spending patterns, among other factors. Although operating results have not been
materially adversely affected by seasonality in the past, because of the
significant seasonal effects experienced within the industry and the Company's
international sales growth and goal to continue international expansion, there
can be no assurance that the Company's future operating results will not be
adversely affected by seasonality.
 
     Sales for any future quarter are not predictable with any significant
degree of certainty. The Company generally operates with limited order backlog
because its products typically are shipped shortly after orders are received. As
a result, product sales in any quarter are generally dependent on orders booked
and shipped in that quarter. Product sales are also difficult to forecast
because the network file server market is rapidly evolving and the Company's
sales cycle varies substantially from customer to customer. A significant
portion of the Company's revenues in any quarter may be derived from sales to a
limited number of customers. Any significant deferral of these sales could have
a material adverse effect on the Company's results of operations in any
particular quarter; and to the extent that significant sales occur earlier than
expected, operating results for subsequent quarters may be adversely affected.
The Company's expense levels are based, in part, on its expectations as to
future sales. As a result, if sales levels are below expectations, net income
may be disproportionately affected. Although the Company has experienced
significant revenue growth in recent periods, such growth may not be indicative
of future operating results. Period-to-period comparisons of its results of
operations are not necessarily meaningful and should not be relied upon as an
indicator of future performance. Due to all of the foregoing factors, it is
possible that in some future quarter the Company's operating results may be
below the expectations of public market analysts and investors. In such event,
the price of the Company's common stock would likely be materially adversely
affected.
 
     This Form 10-Q may contain forward-looking statements about future results
which are subject to risks and uncertainties. Network Appliance's actual results
may differ significantly from the results discussed in the forward-looking
statements. The Company is subject to a variety of other additional risk
factors, more fully described in the Company's Annual Report on Form 10-K filed
with the Securities and Exchange Commission.
 
                                       11
   12
 
LIQUIDITY AND CAPITAL RESOURCES
 
     For the nine months ended January 23, 1998, the Company's cash, cash
equivalents and short-term investments increased by $16.1 million to $44.6
million. The Company's working capital increased during the nine months ended
January 23, 1998 by $18.4 million to $60.3 million. For the nine months ended
January 23, 1998, the Company generated cash from operating activities totaling
$16.2 million, principally related to net income, non-cash expenses and
increases in current liabilities, partially offset by increases in accounts
receivable. Net cash provided by operating activities during the nine months
ended January 24, 1997 principally related to net income, non-cash expenses and
increases in current liabilities, partially offset by increases in accounts
receivable, inventories and prepaid expenses.
 
     The Company used $4.9 million and $3.2 million to purchase property and
equipment during the nine-month periods ended January 23, 1998 and January 24,
1997, respectively. Net maturities of short-term investments provided $1.7
million for the nine months ended January 23, 1998. The Company used $3.9
million during the nine months ended January 24, 1997 for net investment
purchases. Financing activities provided $4.8 million and $1.5 million for the
nine months ended January 23, 1998 and January 24, 1997, respectively, due
primarily to proceeds from the sale of common stock in such periods.
 
     The Company currently has no significant capital commitments other than
commitments under operating leases. The Company believes that its existing
liquidity and capital resources are sufficient to fund its operations for at
least the next twelve months.
 
                                       12
   13
 
                           PART II. OTHER INFORMATION
 
ITEM 1. LEGAL PROCEEDINGS
 
     None
 
ITEM 2. CHANGES IN SECURITIES
 
     None
 
ITEM 3. DEFAULTS UPON SENIOR SECURITIES
 
     None
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITYHOLDERS
 
     None
 
ITEM 5. OTHER INFORMATION
 
     None
 
ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K
 
     (a)EXHIBITS
        3.1 Restated Articles of Incorporation
       27.1 Financial Data Schedule
 
     (b)REPORTS ON FORM 8-K
         On November 26, 1997, the Company filed a current report on Form 8-K,
        announcing the Board of Directors approval of a two-for-one stock split.
 
                                       13
   14
 
                                   SIGNATURE
 
     Pursuant to the requirements of the Securities and Exchange Act of 1934, as
amended, the registrant duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.
 
                                          NETWORK APPLIANCE, INC.
                                          (Registrant)
 
                                          /s/ JEFFRY R. ALLEN
 
                                          --------------------------------------
                                          By: Jeffry R. Allen
                                            Vice President Finance and
                                            Operations, Chief Financial Officer
                                            (Principal Financial Officer)
 
Date: March 5, 1998
 
                                       14
   15
                                EXHIBIT INDEX
                                -------------




Exhibit No.            Description
- -----------            -----------       

 3.1                   Restated Articles of Incorporation                    

27.1                   Financial Data Schedule