<PAGE>
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 10-Q

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

For the quarterly period ended         MARCH 31, 2002
                               -------------------------------

                                       OR

[ ]  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       0-14709
                       -------------------------------------

                       HUTCHINSON TECHNOLOGY INCORPORATED
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

                  MINNESOTA                                41-0901840
        --------------------------------               ------------------
        (State or other jurisdiction of                 (I.R.S. Employer
        incorporation or organization)                 Identification No.)

               40 WEST HIGHLAND PARK, HUTCHINSON, MINNESOTA 55350
               --------------------------------------------------
               (Address of principal executive offices) (Zip code)

                                 (320) 587-3797
              ----------------------------------------------------
              (Registrant's telephone number, including area code)

       -------------------------------------------------------------------
       (Former name, address or fiscal year, if changed since last report)

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 each of the issuer's classes of
common stock, as of the latest practicable date.

As of April 25, 2002 the registrant had 25,328,648 shares of Common Stock issued
and outstanding.


<PAGE>

                          PART I. FINANCIAL INFORMATION
                          ITEM 1. FINANCIAL STATEMENTS.

                       HUTCHINSON TECHNOLOGY INCORPORATED
                CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED
                             (Dollars in thousands)

<Table>
<Caption>
                                                             March 31,      September 30,
                                                               2002              2001
                                                             ---------      -------------
<S>                                                          <C>            <C>
ASSETS
Current assets:
   Cash and cash equivalents                                 $  93,763        $ 113,313
   Securities available for sale                               133,222          131,454
   Trade receivables, net                                       40,093           43,747
   Other receivables                                             3,833            2,878
   Inventories                                                  26,456           21,193
   Prepaid taxes and other                                      12,946            9,615
                                                             ---------        ---------
         Total current assets                                  310,313          322,200
Property, plant and equipment, net                             198,674          211,262
Deferred tax assets                                             51,498           51,410
Other assets (Note 7)                                           31,882           10,068
                                                             ---------        ---------
                                                             $ 592,367        $ 594,940
                                                             =========        =========

LIABILITIES AND SHAREHOLDERS' INVESTMENT
Current liabilities:
   Current portion of capital lease obligation               $   8,631        $  10,808
   Current maturities of long-term debt                         17,793           17,791
   Accounts payable and accrued expenses                        30,562           30,168
   Accrued compensation                                         19,095           16,359
                                                             ---------        ---------
         Total current liabilities                              76,081           75,126
Capital lease obligation                                         1,034            2,608
Long-term debt, less current maturities                         16,714           25,693
Convertible subordinated notes                                 150,000          150,000
Other long-term liabilities                                      2,275            3,247
Shareholders' investment:
   Common stock, $.01 par value, 45,000,000 shares
      authorized, 25,310,000 and 25,171,000 issued and
      outstanding                                                  253              252
   Additional paid-in capital                                  368,929          366,590
   Accumulated deficit                                         (22,919)         (28,576)
                                                             ---------        ---------
         Total shareholders' investment                        346,263          338,266
                                                             ---------        ---------
                                                             $ 592,367        $ 594,940
                                                             =========        =========
</Table>

See accompanying notes to condensed consolidated financial statements.


                                       2
<PAGE>


                       HUTCHINSON TECHNOLOGY INCORPORATED
           CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - UNAUDITED
                      (In thousands, except per share data)

<Table>
<Caption>
                                           Thirteen Weeks Ended         Twenty-Six Weeks Ended
                                         ------------------------      ------------------------
                                         March 31,      March 25,      March 31,      March 25,
                                           2002           2001           2002           2001
                                         ---------      ---------      ---------      ---------
<S>                                      <C>            <C>            <C>            <C>
Net sales                                $  91,499      $  95,737      $ 184,216      $ 214,651

Cost of sales                               73,304         89,934        144,801        188,954
                                         ---------      ---------      ---------      ---------

   Gross profit                             18,195          5,803         39,415         25,697

Research and development expenses            4,254          5,493          8,785         12,001

Selling, general and
   administrative expenses                  11,453         12,776         23,749         25,528

Asset impairment and other (Note 2)             --          2,364             --          2,364

Legal expense reimbursement (Note 9)            --             --         (2,632)            --
                                         ---------      ---------      ---------      ---------

   Income (loss) from operations             2,488        (14,830)         9,513        (14,196)

Interest expense                            (3,517)        (3,992)        (7,121)        (7,965)

Other income, net                            2,049          3,678          4,263          7,811
                                         ---------      ---------      ---------      ---------

   Income (loss) before income taxes         1,020        (15,144)         6,655        (14,350)

Provision (benefit) for income taxes           153         (1,514)           998         (1,435)
                                         ---------      ---------      ---------      ---------

   Net income (loss)                     $     867      $ (13,630)     $   5,657      $ (12,915)
                                         =========      =========      =========      =========

Basic earnings (loss) per share          $    0.03      $   (0.55)     $    0.22      $   (0.52)
Diluted earnings (loss) per share        $    0.03      $   (0.55)     $    0.22      $   (0.52)

Weighted average common shares
   outstanding                              25,304         24,869         25,263         24,859

Weighted average common and diluted
   shares outstanding                       25,667         24,869         25,594         24,859
</Table>


See accompanying notes to condensed consolidated financial statements.


                                       3
<PAGE>


                       HUTCHINSON TECHNOLOGY INCORPORATED
           CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED
                             (Dollars in thousands)

<Table>
<Caption>
                                                                          Twenty-Six Weeks Ended
                                                                         ------------------------
                                                                         March 31,      March 25,
                                                                            2002          2001
                                                                         ---------      ---------
<S>                                                                      <C>            <C>
Operating activities:
   Net income (loss)                                                     $   5,657      $ (12,915)
   Adjustments to reconcile net income (loss) to cash
      provided by operating activities:
         Depreciation and amortization                                      29,957         46,151
         Deferred taxes                                                       (197)          (689)
         Change in operating assets and liabilities (Note 8)               (26,464)        10,540
                                                                         ---------      ---------
                    Cash provided by operating activities                    8,953         43,087
                                                                         ---------      ---------

Investing activities:
   Capital expenditures                                                    (16,347)       (16,525)
   Purchases of marketable securities                                     (157,969)       (49,994)
   Sales of marketable securities                                          156,201         76,153
                                                                         ---------      ---------
                    Cash provided by (used for) investing activities       (18,115)         9,634
                                                                         ---------      ---------

Financing activities:
   Repayments of long-term debt                                             (8,977)       (11,519)
   Repayments of capital lease obligation                                   (3,751)        (2,454)
   Net proceeds from issuance of common stock                                2,340            490
                                                                         ---------      ---------
                    Cash used for financing activities                     (10,388)       (13,483)
                                                                         ---------      ---------

Net increase (decrease) in cash and cash equivalents                       (19,550)        39,238

Cash and cash equivalents at beginning of period                           113,313        129,314
                                                                         ---------      ---------

Cash and cash equivalents at end of period                               $  93,763      $ 168,552
                                                                         =========      =========
</Table>

See accompanying notes to condensed consolidated financial statements.


                                       4
<PAGE>


                       HUTCHINSON TECHNOLOGY INCORPORATED
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED
    (Columnar dollar amounts in thousands except share and per share amounts)

Unless otherwise indicated, references to "2002" mean HTI's fiscal year ending
September 29, 2002 and references to "2001" mean HTI's fiscal year ended
September 30, 2001.

(1)  ACCOUNTING POLICIES

The condensed consolidated financial statements have been prepared by the
Company, without audit, pursuant to the rules and regulations of the Securities
and Exchange Commission. The information furnished in the condensed consolidated
financial statements include normal recurring adjustments and reflect all
adjustments which are, in the opinion of management, necessary for a fair
presentation of such financial statements. Certain information and footnote
disclosures normally included in financial statements prepared in accordance
with accounting principles generally accepted in the United States have been
condensed or omitted pursuant to such rules and regulations. Although the
Company believes that the disclosures are adequate to make the information
presented not misleading, it is suggested that these condensed consolidated
financial statements be read in conjunction with the financial statements and
the notes thereto included in the Company's latest Annual Report on Form 10-K.
The quarterly results are not necessarily indicative of the actual results that
may occur for the entire fiscal year.

(2)  ASSET IMPAIRMENT AND OTHER

In our second quarter of 2001, lingering effects of slower holiday season sales
of personal computers, concerns about a weak economy, and previous overbuying by
businesses, resulted in lower drive demand. This led to our unit shipments for
the second quarter of 2001 declining significantly from first quarter levels. In
an effort to reduce costs, we eliminated approximately 350 positions in
manufacturing, development and manufacturing support at all plant sites,
resulting in a $2,364,000 charge for severance costs.

(3)  BUSINESS AND CUSTOMERS

The Company is the world's leading supplier of suspension assemblies for hard
disk drives. Suspension assemblies hold the recording heads in position above
the spinning magnetic disks in the drive and are critical to maintaining the
necessary microscopic clearance between the head and disk. The Company developed
its leadership position in suspension assemblies through research, development
and design activities coupled with a substantial investment in manufacturing
technologies and equipment. The Company is focused on continuing to develop
suspension assemblies which address the rapidly changing requirements of the
hard disk drive industry. The Company also is engaged in the development of
products for the medical device market, but does not expect to generate
significant revenue during 2002. A breakdown of customer sales is as follows:

<Table>
<Caption>
                                Thirteen Weeks Ended       Twenty-Six Weeks Ended
                               ----------------------     -----------------------
                               March 31,    March 25,     March 31,     March 25,
Percentage of Net Sales          2002         2001          2002          2001
-----------------------        ---------    ---------     ---------     ---------
<S>                                <C>         <C>           <C>           <C>
Five Largest Customers             83%         91%           78%           93%
   SAE Magnetics, Ltd./TDK         26          23            24            25
   Alps Electric Co., Ltd.         22           9            15            12
   IBM and affiliates              14          18            15            15
   Seagate Technology LLC          13          12            12            14
   Read-Rite Corporation            8          29            12            27
</Table>


                                       5
<PAGE>


(4) INVENTORIES

All inventories are stated at the lower of first-in, first-out ("FIFO") cost or
market. Inventories consisted of the following:

<Table>
<Caption>
                      March 31,    September 30,
                         2002          2001
                      ---------    -------------
<S>                   <C>          <C>
Raw materials          $ 7,090        $ 5,965
Work in process          6,073          5,836
Finished goods          13,293          9,392
                       -------        -------
                       $26,456        $21,193
                       =======        =======
</Table>

(5)  NET INCOME (LOSS) PER SHARE

Basic earnings (loss) per share is computed by dividing net income (loss)
available for common shareholders by the weighted average number of common
shares outstanding during the year. Diluted earnings (loss) per share is
computed under the treasury stock method and is calculated to compute the
dilutive effect of potential common shares. A reconciliation of these amounts is
as follows:

<Table>
<Caption>
                                                             Twenty-Six Weeks Ended
                                                             -----------------------
                                                             March 31,     March 25,
                                                               2002           2001
                                                             -------       --------
<S>                                                          <C>           <C>
Net income (loss) available for common shareholders          $ 5,657       $(12,915)
                                                             -------       --------
Weighted average common shares outstanding                    25,263         24,859
Dilutive potential common shares                                 331             --
                                                             -------       --------
Weighted average common and diluted shares outstanding        25,594         24,859
                                                             =======       ========

Basic earnings (loss) per share                              $  0.22       $  (0.52)
Diluted earnings (loss) per share                            $  0.22       $  (0.52)
</Table>

Potential common shares of 5,291,000, relating to the Company's outstanding
convertible subordinated notes, were excluded from the computation of diluted
earnings per share for the twenty-six weeks ended March 31, 2002 and March 25,
2001, as inclusion of these shares would have been antidilutive. Potential
common shares of 277,000 relating to the Company's outstanding stock options,
were excluded from the computation of diluted loss per share for the twenty-six
weeks ended March 25, 2001, as inclusion of these shares would have been
antidilutive.

(6)  INCOME TAXES

The following table details the significant components of the Company's deferred
tax assets:

<Table>
<Caption>
                                                       March 31,     September 30,
                                                         2002            2001
                                                       ---------     -------------
<S>                                                    <C>           <C>
Current deferred tax assets:
         Receivable reserves                           $  1,401        $  1,334
         Inventories                                      5,834           6,714
         Accruals and other reserves                      6,417           5,804
         Valuation allowance                             (5,415)         (5,724)
                                                       --------        --------
            Total current deferred tax assets             8,237           8,128
                                                       --------        --------

Long-term deferred tax assets:
         Property, plant and equipment                   15,164          16,115
         Other                                              175              --
         Tax credits                                     14,561          14,316
         Net operating loss carryforwards                71,473          72,237
         Valuation allowance                            (49,875)        (51,258)
                                                       --------        --------
             Total long-term deferred tax assets         51,498          51,410
                                                       --------        --------

Total deferred tax assets                              $ 59,735        $ 59,538
                                                       ========        ========
</Table>


                                       6
<PAGE>


Deferred income taxes reflect the net tax effects of temporary differences
between the carrying amounts of assets and liabilities for financial reporting
purposes and the amounts used for income tax purposes. At March 31, 2002, the
Company had unused tax credits and net operating loss carryforwards of
$86,034,000, of which $5,525,000 can be carried forward indefinitely and
$80,509,000 which expire at various dates through 2021. A valuation allowance of
$55,290,000 has been recorded for certain of these deferred tax assets due to
the uncertainty of realizing the benefit of certain tax credits and net
operating loss carryforwards.

(7)  OTHER ASSETS

During the second quarter of 2002, the Company prepaid $26,000,000 related to a
technology and development agreement. The prepayment of these expenses has been
included in "Other assets" on the accompanying balance sheet and will be
amortized on a straightline basis through 2010.

(8)  SUPPLEMENTARY CASH FLOW INFORMATION

<Table>
<Caption>
                                                        Twenty-Six Weeks Ended
                                                       -------------------------
                                                       March 31,       March 25,
                                                         2002             2001
                                                       ---------       ---------
<S>                                                    <C>             <C>
 Changes in operating assets and liabilities:
         Receivables, net                               $  2,699        $ 14,012
         Inventories                                      (5,263)          3,999
         Prepaid and other                               (25,675)            389
         Accounts payable and accrued liabilities          2,747          (7,202)
         Other non-current liabilities                      (972)           (658)
                                                        --------        --------
                                                        $(26,464)       $ 10,540
                                                        ========        ========

Cash paid (refunded) for:
         Interest (net of amount capitalized)           $  6,702        $  7,950
         Income taxes                                   $   (425)       $    519
</Table>

Capitalized interest for the twenty-six weeks ended March 31, 2002 was $507,000
compared to $471,000 for the comparable period in 2001.


                                       7
<PAGE>


(9) LEGAL EXPENSE REIMBURSEMENT

During the first quarter of 2002, the Company recorded a one-time increase to
operating income of $2,632,000 as a result of a reimbursement of legal expenses
from a third party and insurance proceeds related to litigation defense costs.
The reimbursement of legal expenses is to be paid in installments through 2006
and is recorded at the net present value of the remaining payments.

(10)  LEGAL CONTINGENCIES

On October 10, 2001, Ronald A. Smith & Associates commenced a lawsuit against
the Company in the United States District Court for the Northern District of
California. The lawsuit alleges that certain manufacturing systems the Company
uses infringe one patent. The lawsuit requests damages, including treble
damages, attorneys' fees and an injunction against the Company. Management of
the Company is unable to estimate at this time the possible loss that
potentially could result from this lawsuit.

The Company and certain users of the Company's products have from time to time
received, and may in the future receive, communications from third parties
asserting patents against the Company or its customers which may relate to
certain of the Company's manufacturing equipment or products or to products that
include the Company's products as a component. The Company is currently a party
to the litigation described above. In addition, certain of the Company's
customers have been sued on patents having claims closely related to products
sold by the Company. If any third party makes a valid infringement claim and a
license were not available on terms acceptable to the Company, the Company's
operating results could be adversely affected. The Company expects that, as the
number of patents issued continues to increase, and as the Company grows, the
volume of intellectual property claims could increase. The Company may need to
engage in litigation to enforce patents issued or licensed to it, protect trade
secrets or know-how owned by it or determine the enforceability, scope and
validity of the intellectual property rights of others. The Company could incur
substantial costs in such litigation or other similar legal actions, which could
have a material adverse effect on its results of operations.

The Company is a party to certain other claims arising in the ordinary course of
business. In the opinion of management, the outcome of such claims will not
materially affect the Company's current or future financial position or results
of operations.

(11)  OTHER MATTERS

In response to a World Trade Organization ("WTO") ruling that the United States
Foreign Sales Corporation ("FSC") provisions of the Internal Revenue Code
constituted a prohibited export subsidy, the United States government repealed
the FSC provisions and, in November of 2000, enacted The Extraterritorial Income
Exclusion Act of 2000 ("EIE"). Under the WTO rules, the European Union asked the
WTO dispute settlement panel for a ruling as to whether or not the EIE was also
a prohibited export subsidy. In late June 2001, the WTO dispute settlement panel
ruled that the EIE also constituted a prohibited export subsidy.

On October 10, 2001, the United States announced it would appeal the WTO
decision because it believed the decision was in error. On January 14, 2002, the
WTO Appellate Body confirmed the WTO dispute settlement panel findings. To date,
the United States has not proposed any legislative changes to EIE. In the
interim, the EIE provisions continue to apply to companies in the United States.
The Company expects to obtain a net EIE benefit similar to that previously
earned under the FSC provisions.


                                       8
<PAGE>


                       HUTCHINSON TECHNOLOGY INCORPORATED
     ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
                             RESULTS OF OPERATIONS.

Unless otherwise indicated, references to "2002" mean HTI's fiscal year ending
September 29, 2002, references to "2001" mean HTI's fiscal year ended September
30, 2001, references to "2000" mean HTI's fiscal year ended September 24, 2000,
and references to "1999" mean HTI's fiscal year ended September 26, 1999.

GENERAL

Since the late 1980's, we have derived virtually all of our revenue from the
sale of suspension assemblies to a small number of customers. We currently sell
a variety of suspension assemblies and suspension assembly components based on
several standard designs. Suspension assemblies are a critical component of hard
disk drives ("disk drives") and our results of operations are highly dependent
on the disk drive industry. The disk drive industry is intensely competitive and
volatile and our results of operations have been adversely affected from time to
time due to disk drive industry slowdowns, technological changes that impact
suspension assembly demand, production yields and our own product transitions.

Since 1999, improvements in data density of disk drives, which outpaced disk
drive storage capacity requirements, have enabled disk drive manufacturers to
reduce their costs by using fewer components, including suspensions, in each
drive. Shifts in our position in the marketplace have also, to a lesser extent,
decreased demand for our products. Slower growth of disk drive storage demand
and a weaker global economy also decreased demand for our products in 2001.
Results for 1999, 2000 and 2001, therefore, did not show the results we
expected, as unit shipments declined from 583 million in 1999 to 420 million in
2001. Our unit shipments of suspension assemblies for the second quarter of 2002
were 95 million, comparable to the levels we saw in the four preceding quarters.

In our fourth quarter of 2001, our long-term forecast of suspension assembly
demand decreased significantly due to long-term industry forecasts reflecting
slower growth projections for disk drive storage demand. We believe this is due
to a weaker global economy, consumer uncertainty, and a potential trend toward
higher utilization of current storage capacity. We continue to have limited
visibility for future demand.

Our selling prices are subject to pricing pressure from our customers and market
pressure from our competitors. Our selling prices also are affected by changes
in overall demand for our products, changes in the specific products our
customers buy and a product's life cycle. A typical life cycle for our products
begins with higher pricing when a product is introduced, decreasing prices when
it is mature, and slightly increasing pricing as it is phased out. To offset
price decreases during a product's life, we rely primarily on higher sales
volume and improving our manufacturing yield and productivity to reduce its
cost. If we cannot reduce our manufacturing costs as prices decline during our
products' life cycles, or at all, our business, financial condition and results
of operations could be materially adversely affected.

Our gross margins have fluctuated and will continue to fluctuate based upon a
variety of factors such as

o    changes in demand
o    product mix
o    selling prices
o    the level of utilization of our production capacity
o    increases in production and engineering costs associated with production of
     new products
o    manufacturing yields
o    changes in the cost of materials


                                       9
<PAGE>

Our ability to respond to our customers' needs for new products and product
features on a timely basis is an important factor in our success. New products
have lower manufacturing yields and are produced in lower quantities than more
mature products. Our dedicated development center enables us to shorten
development cycles and achieve high volume output per manufacturing unit more
quickly. Manufacturing yields generally improve as the product matures and
production volumes increase. Manufacturing yields also vary depending on the
complexity and uniqueness of product specifications. Because our business is
capital intensive and requires a high level of fixed costs, gross margins are
also extremely sensitive to changes in volume. Small variations in capacity
utilization or manufacturing yields generally have a significant impact on gross
margins.

We typically allow customers to change or cancel orders on short notice without
penalty. We plan our production and inventory based primarily on forecasts of
customer demand, including forecasts of customer pulls of product out of our
"just-in-time" inventory hubs, rather than on order backlog. Customers typically
prefer a dual source supply and, therefore, they allocate their demand among
suppliers. Both customer demand and the resulting forecasts often fluctuate
substantially. These factors, among others, create an environment where
scheduled production and capacity utilization can vary significantly from week
to week, leading to variability in gross margins and difficulty in estimating
our position in the marketplace.

In addition to increases in suspension assembly demand, improvements to our
operating margins depend, in part, on the successful management of our corporate
infrastructure, our suspension assembly production capacity and our workforce.
During the past three years, we consolidated some of our manufacturing
operations to make better use of existing equipment and support staff across all
of our plants and to reduce costs. As part of our efforts to improve our
operating margins through reduced costs and improved efficiency, we reduced our
overall employment level from 7,701 at the end of 1999 to 3,377 at the end of
the second quarter of 2002, through workforce reductions and managed attrition.

RESULTS OF OPERATIONS

THIRTEEN WEEKS ENDED MARCH 31, 2002 VS. THIRTEEN WEEKS ENDED MARCH 25, 2001.

Net sales for the thirteen weeks ended March 31, 2002 were $91,499,000, a
decrease of $4,238,000 or 4% from the comparable period in 2001. Suspension
assembly sales decreased $7,575,000 compared to the thirteen weeks ended March
25, 2001, primarily due to declining average selling prices for suspension
assemblies and a slight decrease in suspension assembly sales volume. These
decreases were partially offset by a $3,708,000 increase in suspension assembly
component sales.

Gross profit for the thirteen weeks ended March 31, 2002 was $18,195,000,
compared to $5,803,000 for the comparable period in 2001. Gross profit as a
percent of net sales increased from 6% to 20%, primarily due to lower
depreciation expense of $8,692,000 as a result of lower capital expenditures in
2000 and 2001 and the asset impairment charges recorded in 2000 and 2001, and
decreases of $5,073,000 in manufacturing labor and benefits and $2,786,000 in
manufacturing support expenses as a result of workforce reductions and
productivity improvements. These decreases were offset partially by the reduced
net sales noted above and higher manufacturing supplies expenses of $1,090,000.

Research and development expenses for the thirteen weeks ended March 31, 2002
were $4,254,000 compared to $5,493,000 for the thirteen weeks ended March 25,
2001. The decrease was primarily due


                                       10
<PAGE>


to customer funding of a portion of advanced suspension assembly development
costs. As a percent of net sales, research and development expenses decreased
from 6% in the second quarter of 2001 to 4% in the second quarter of 2002.

Selling, general and administrative expenses for the thirteen weeks ended March
31, 2002 were $11,453,000, a decrease of $1,323,000 or 10% from the comparable
period in 2001. The decrease was due primarily to lower legal fees, reduced bad
debt expenses and lower software training and maintenance costs and, to a lesser
extent, reduced labor and benefits expenses, lower depreciation expense and
reduced recruitment and relocation expenses. These decreases were partially
offset by higher incentive compensation costs. Selling, general and
administrative expenses as a percent of net sales were 13% in both the second
quarter of 2001 and in the second quarter of 2002.

During the second quarter of 2001, we recorded a charge of $2,364,000 to record
severance costs for approximately 350 employees terminated during the quarter.
See Note 2, "Asset Impairment and Other", in the notes to the condensed
consolidated financial statements.

Interest expense for the thirteen weeks ended March 31, 2002 was $3,517,000, a
decrease of $475,000 from the comparable period in 2001, primarily due to
reduced interest expense on fewer capitalized leases and a lower amount of
outstanding debt.

Other income, net, for the thirteen weeks ended March 31, 2002 was $2,049,000, a
decrease of $1,629,000 from the comparable period in 2001. The decrease was
primarily due to a decrease in interest income as a result of lower investment
yields.

The income tax benefit for the thirteen weeks ended March 31, 2002 was based on
an estimated effective tax rate for the fiscal year of 15%, which is below the
statutory federal rate primarily due to the benefit derived from the
Extraterritorial Income Exclusion provisions related to export of U.S. products.

Net income for the thirteen weeks ended March 31, 2002 was $867,000, compared to
a net loss of $13,630,000 for the comparable period in 2001. Excluding the
severance costs in the second quarter of 2001, net income as a percent of net
sales increased from (12)% for the thirteen weeks ended March 25, 2001 to 1% for
the thirteen weeks ended March 31, 2002. Our improved profitability was
primarily due to cost reduction efforts completed during 2001.

TWENTY-SIX WEEKS ENDED MARCH 31, 2002 VS. TWENTY-SIX WEEKS ENDED MARCH 25, 2001.

Net sales for the twenty-six weeks ended March 31, 2002 were $184,216,000, a
decrease of $30,435,000 or 14% from the comparable period in 2001. Suspension
assembly sales decreased $39,052,000 compared to the twenty-six weeks ended
March 25, 2001, primarily due to a 16% decrease in suspension assembly sales
volume and declining average selling prices for suspension assemblies. These
decreases were partially offset by a $8,496,000 increase in suspension assembly
component sales.

Gross profit for the twenty-six weeks ended March 31, 2002 was $39,415,000,
compared to $25,697,000 for the comparable period in 2001, and gross profit as a
percent of net sales increased from 12% to 21%. This increase was primarily due
to lower depreciation expense of $16,077,000 as a result of lower capital
expenditures in 2000 and 2001 and the asset impairment charges recorded in 2000
and 2001, a $13,651,000 reduction in manufacturing labor and benefits as a
result of workforce reductions and productivity improvements, a $6,467,000
reduction in inventory obsolescence costs, and a $5,459,000 reduction of
manufacturing support expenses as a result of workforce reductions. These
decreases were offset partially by the lower net sales noted above.


                                       11
<PAGE>


Research and development expenses for the twenty-six weeks ended March 31, 2002
were $8,785,000 compared to $12,001,000 for the twenty-six weeks ended March 25,
2001. The decrease was primarily due to customer funding of a portion of
advanced suspension assembly development costs. As a percent of net sales,
research and development expenses decreased from 6% for the twenty-six weeks
ended March 25, 2001 to 5% for the twenty-six weeks ended March 31, 2002.

Selling, general and administrative expenses for the twenty-six weeks ended
March 31, 2002 were $23,749,000, a decrease of $1,779,000 or 7% from the
comparable period in 2001. The decrease was due primarily to lower professional
services fees and reduced labor and benefits expenses and, to a lesser extent,
lower bad debt expenses, reduced depreciation and lease expenses, lower travel
and training expenses and reduced recruitment and relocation expenses. These
decreases were partially offset by higher incentive compensation costs. Selling,
general and administrative expenses as a percent of net sales increased from 12%
for the twenty-six weeks ended March 25, 2001 to 13% for the twenty-six weeks
ended March 31, 2002.

During the second quarter of 2001, we recorded a charge of $2,364,000 to record
severance costs for approximately 350 employees terminated during the quarter.
See Note 2, "Asset Impairment and Other", in the notes to the condensed
consolidated financial statements.

During the first quarter of 2002, we recorded a one-time increase to operating
income of $2,632,000 as a result of a reimbursement of legal expenses from a
third party and insurance proceeds related to litigation defense costs. See Note
9, "Legal Expense Reimbursement," in the notes to the condensed consolidated
financial statements.

Interest expense for the twenty-six weeks ended March 31, 2002 was $7,121,000, a
decrease of $844,000 from the comparable period in 2001, primarily due to
reduced interest expense on fewer capitalized leases and a lower amount of
outstanding debt.

Other income, net, for the twenty-six weeks ended March 31, 2002 was $4,263,000,
a decrease of $3,548,000 from the comparable 2001 period. This decrease was
primarily due to a decrease in interest income as a result of lower investment
yields.

The income tax benefit for the twenty-six weeks ended March 31, 2002 was based
on an estimated effective tax rate for the fiscal year of 15%, which is below
the statutory federal rate primarily due to the benefit derived from the
Extraterritorial Income Exclusion provisions related to export of U.S. products.

Net income for the twenty-six weeks ended March 31, 2002 was $5,657,000,
compared to a net loss of $12,915,000 for the comparable period in 2001.
Excluding the severance costs in the second quarter of 2001, net income as a
percent of net sales, increased from (5)% for the twenty-six weeks ended March
25, 2001 to 3% for the twenty-six weeks ended March 31, 2002. Our improved
profitability was primarily due to cost reduction efforts completed during 2001
and the one-time increase to operating income discussed above.

LIQUIDITY AND CAPITAL RESOURCES

Our principal sources of liquidity are cash and cash equivalents, securities
available for sale, cash flow from operations and additional financing capacity.
Our cash and cash equivalents decreased from $113,313,000 at September 30, 2001
to $93,763,000 at March 31, 2002. Our securities available for sale increased
from $131,454,000 to $133,222,000 during the same period. Overall, this reflects
a $17,782,000 decrease in our cash and cash equivalents and securities available
for sale, primarily due to


                                       12
<PAGE>


a prepayment of certain expenses related to a technology and development
agreement. We generated cash from operating activities of $8,953,000 for the
twenty-six weeks ended March 31, 2002.

As of March 31, 2002, our $50,000,000 credit facility had a borrowing base of
$38,919,000, secured by our accounts receivable and inventory. Letters of credit
outstanding under this facility totaled $7,920,000 as of such date, including
$6,610,000 issued in connection with obligations under equipment leases. The
amount we can borrow under this credit facility is limited by the levels of our
accounts receivable and inventory balances. As of March 31, 2002, $30,981,000 of
borrowing capacity remained available to us.

Cash used for capital expenditures totaled $16,347,000 for the twenty-six weeks
ended March 31, 2002. We expect total capital expenditures to be approximately
$30,000,000 for 2002, to be spent primarily for new program tooling, process
capability improvements and new manufacturing technology. Financing of these
capital expenditures will be principally from internally generated funds, cash
and cash equivalents and securities available for sale.

Certain of our existing financing agreements contain financial covenants and
covenants which may restrict our ability to enter into certain types of
financing. As of March 31, 2002, we were in compliance with all such covenants.
Existing economic and industry conditions have resulted in a slower projected
growth rate for suspension assembly demand for the foreseeable future. If these
conditions continue in 2002, we may be out of compliance with certain financial
covenants included in our financing arrangements at the end of our 2002 third
quarter. We currently believe that we will be successful in obtaining any
necessary amendment on terms acceptable to us. If, however, we are not in
compliance with financial covenants in our financing agreements at the end of
any quarter or cannot obtain amendments, our future financial results and
liquidity could be materially adversely affected.

We currently believe that our cash and cash equivalents, securities available
for sale, cash generated from operations and credit facility will be sufficient
to meet our operating expenses, debt service requirements and capital
expenditures through 2002. We will pursue additional debt or equity financing to
supplement our current capital resources if needed beyond 2002. Our ability to
obtain additional financing will depend upon a number of factors, including our
future performance and financial results and general economic and capital market
conditions. We cannot be sure that we will be able to raise additional capital
on reasonable terms or at all.

MARKET TRENDS AND CERTAIN CONTINGENCIES

(a) MARKET TRENDS

We expect the expanding use of enterprise computing and storage, personal
computers, increasingly complex software and the emergence of new applications
for disk storage, such as digital video recording, gaming consoles, digital
cameras and other consumer applications, will increase disk drive demand and
therefore, suspension demand, in the future. We also believe demand for disk
drives will continue to be subject, as it has in the past, to rapid or
unforeseen changes resulting from, among other things, changes in disk drive
inventory levels, technological advances, responses to competitive price changes
and unpredicted high or low market acceptance of new drive models. Improvements
in data density of disk drives, extending from the desktop market to server
drives, have reduced unit shipments of suspension assemblies since the third
quarter of 1999. We expect that our suspension assembly shipments will remain
relatively flat for the foreseeable future until some combination of the
following events occurs: average suspension assembly counts within disk drives
stabilize or increase, or overall disk drive demand growth increases, or our
share of certain drive programs increases.


                                       13
<PAGE>


As in past years, disk drives continue to be the storage device of choice for
applications requiring low access times and higher capacities because of their
speed and low cost per megabyte of stored data. The cost of storing data on disk
drives continues to decrease primarily due to increasing data density, the
amount of data which can be stored on magnetic disks, thereby increasing storage
capacity in disk drives or reducing the number of components, including
suspension assemblies, required in a disk drive.

The continual pursuit of increasing data density and lower storage costs are
leading to further adoption of value-added features for TSA suspensions, such as
headlifts, limiters, static dissipative coating and switch shunts. Static
dissipative coating and switch shunts helps our customers prevent damage to the
sensitive recording heads by reducing the risk of electrostatic discharge. TSA
suspensions also allow for dual stage actuation, which incorporates a second
stage actuator on a suspension to improve head positioning over increasingly
tighter data tracks. Additionally, TSA suspensions can be configured to allow
for attachment of preamplifiers near the head to improve data transfer signals.

The introduction of new types or sizes of read/write heads and new disk drive
designs tends to initially decrease customers' yields with the result that we
may experience temporary elevations of demand for some types of suspension
assemblies. Likewise, as programs mature, higher customer yields decrease the
demand for suspension assemblies. The advent of new heads and new drive designs
may require rapid development and implementation of new suspension types which
temporarily may reduce our manufacturing yields and efficiencies. We cannot be
sure that we will not continue to be affected by such changes.

(b) CONTINGENCIES

On October 10, 2001, Ronald A. Smith & Associates commenced a lawsuit against us
in the United States District Court for the Northern District of California. The
lawsuit alleges that certain manufacturing systems we use infringe one patent.
The lawsuit requests damages, including treble damages, attorneys' fees and an
injunction against us. We are unable to estimate at this time the possible loss
that potentially could result from this lawsuit.

We and certain users of our products have from time to time received, and may in
the future receive, communications from third parties asserting patents against
us or our customers which may relate to certain of our manufacturing equipment
or products or to products that include our products as a component. We are
currently a party to the litigation described above. In addition, certain of our
customers have been sued on patents having claims closely related to products
sold by us. If any third party makes a valid infringement claim and a license
were not available on terms acceptable to us, our operating results could be
adversely affected. We expect that, as the number of patents issued continues to
increase, and as we grow, the volume of intellectual property claims could
increase. We may need to engage in litigation to enforce patents issued or
licensed to us, protect trade secrets or know-how owned by us or determine the
enforceability, scope and validity of the intellectual property rights of
others. We could incur substantial costs in such litigation or other similar
legal actions, which could have a material adverse effect on our results of
operations.

We are a party to certain other claims arising in the ordinary course of
business. In the opinion of management, the outcome of such claims will not
materially affect our current or future financial position or results of
operations.


                                       14
<PAGE>


(c)  OTHER MATTERS

In response to a World Trade Organization ("WTO") ruling that the United States
Foreign Sales Corporation ("FSC") provisions of the Internal Revenue Code
constituted a prohibited export subsidy, the United States government repealed
the FSC provisions and, in November of 2000, enacted The Extraterritorial Income
Exclusion Act of 2000 ("EIE"). Under the WTO rules, the European Union asked the
WTO dispute settlement panel for a ruling as to whether or not the EIE was also
a prohibited export subsidy. In late June 2001, the WTO dispute settlement panel
ruled that the EIE also constituted a prohibited export subsidy.

On October 10, 2001 the United States announced it would appeal the WTO decision
because it believed the decision was in error. On January 14, 2002, the WTO
Appellate Body confirmed the WTO dispute settlement panel findings. To date, the
United States has not proposed any legislative changes to EIE. In the interim,
the EIE provisions continue to apply to companies in the United States. We
expect to obtain a net EIE benefit similar to that previously earned under the
FSC provisions.

FORWARD-LOOKING STATEMENTS

The statements above under the headings "General" and "Market Trends and Certain
Contingencies" about demand for and shipments of disk drives and suspension
assemblies, including TSA suspensions, manufacturing capacity and yields and
selling prices, and the statements above under the heading "Liquidity and
Capital Resources" about capital expenditures, capital resources and covenant
compliance and amendments are forward-looking statements based on current
expectations. These statements are subject to risks and uncertainties, including
slower or faster customer acceptance and adoption of new product features,
fluctuating order rates, faster or slower improvements in disk drive data
densities which affect suspension assembly demand, changes in market consumption
of disk drives or suspension assemblies, difficulties in producing our TSA
suspensions, difficulties in managing capacity, changes in manufacturing
efficiencies, difficulties in obtaining covenant amendments in our existing
financing agreements and the other risks and uncertainties discussed above.
These factors may cause our actual future results to differ materially from
historical earnings and from the financial performance we presently anticipate.


                                       15
<PAGE>


       ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

Our credit facility with The CIT Group/Business Credit, Inc. carries interest
rate risk, in connection with certain borrowings under the working capital line
it provides, that is generally related to either LIBOR or the prime rate. If
either of these rates were to change while we had such borrowings outstanding
under the working capital line provided by the credit facility, interest expense
would increase or decrease accordingly. At March 31, 2002, there were $18,000 in
outstanding borrowings under the working capital line provided by the credit
facility. Our variable rate demand note ("Note") also carries interest rate risk
that is generally related to the 91-day U.S. treasury bill interest rate. At
March 31, 2002, the outstanding principal amount of the Note was $600,000 which
was subject to an interest rate of 1.65%.

We have no earnings or cash flow exposure due to market risk on our other debt
obligations which are subject to fixed interest rates. Interest rate changes,
however, would affect the fair market value of this fixed rate debt. At March
31, 2002, we had fixed rate debt of $183,907,000.

We do not enter into derivative or other financial instruments or hedging
transactions for trading or speculative purposes. All of our sales transactions
are denominated in United States dollars and thus are not subject to risk due to
currency exchange fluctuations.


                                       16
<PAGE>


                           PART II. OTHER INFORMATION
          ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

At the Company's 36th Annual Meeting of Shareholders held on January 30, 2002,
the shareholders of the Company approved the following:

     (a) the election of directors to serve until their successors are duly
     elected. Each nominated director was elected as follows:

<Table>
<Caption>
                Director                     Votes For      Votes Withheld
                --------                     ----------     --------------
<S>                                          <C>            <C>
                W. Thomas Brunberg           24,123,738         102,975
                Archibald Cox, Jr.           24,124,759         101,954
                Wayne M. Fortun              20,967,255       3,259,458
                Jeffrey W. Green             20,969,228       3,257,485
                Russell Huffer               24,125,558         101,155
                R. Frederick McCoy, Jr.      24,123,323         103,390
                William T. Monahan           24,125,478         101,235
                Richard B. Solum             24,124,869         101,844
</Table>

     (b) a proposal to ratify the appointment of Arthur Andersen LLP to serve as
     independent public accountants of the Company for the fiscal year ending
     September 29, 2002. The proposal received 23,923,142 votes for, and 253,145
     votes against, ratification. There were 50,426 abstentions and no broker
     non-votes.


                                       17
<PAGE>


                    ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K.

(A)  EXHIBITS:

Unless otherwise indicated, all documents incorporated herein by reference to a
document filed with the Securities and Exchange Commission pursuant to the
Securities Exchange Act of 1934, as amended, are located under SEC file number
0-14709.

   3.1   Restated Articles of Incorporation of HTI, as amended by Articles of
         Amendment dated 1/27/88 and as amended by Articles of Amendment dated
         1/21/97 (incorporated by reference to Exhibit 3.1 to HTI's Quarterly
         Report on Form 10-Q for the quarter ended 6/29/97).

   3.2   Restated By-Laws of HTI (incorporated by reference to Exhibit 3.2 to
         HTI's Quarterly Report on Form 10-Q for the quarter ended 12/29/96) and
         Amendments to Restated By-Laws of HTI dated 7/19/00 (incorporated by
         reference to Exhibit 3.2 to HTI's Quarterly Report on Form 10-Q for the
         quarter ended 6/25/00).

   4.1   Instruments defining the rights of security holders, including an
         indenture. The Registrant agrees to furnish the Securities and Exchange
         Commission upon request copies of instruments with respect to long-term
         debt.

   4.2   Indenture dated as of 3/18/98 between HTI and U.S. Bank National
         Association, as Trustee (incorporated by reference to Exhibit 4.6 to
         HTI's Registration Statement on Form S-3, Registration No. 333-50143).

   4.3   Purchase Agreement dated 3/12/98 by and among HTI, NationsBanc
         Montgomery Securities LLC and First Chicago Capital Markets, Inc.
         (incorporated by reference to Exhibit 4.7 to HTI's Registration
         Statement on Form S-3, Registration No. 333-50143).

   4.4   Shelf Registration Agreement dated as of 3/18/98 by and among HTI,
         NationsBanc Montgomery Securities LLC and First Chicago Capital
         Markets, Inc. (incorporated by reference to Exhibit 4.8 to HTI's
         Registration Statement on Form S-3, Registration No. 333-50143).

  10.1   Office/Warehouse Lease between OPUS Corporation, Lessor, and HTI,
         Lessee, dated 12/29/95 (incorporated by reference to Exhibit 10.2 to
         HTI's Quarterly Report on Form 10-Q for the quarter ended 3/24/96), and
         First Amendment to Office/Warehouse Lease dated 4/30/96 (incorporated
         by reference to Exhibit 10.2 to HTI's Quarterly Report on Form 10-Q for
         the quarter ended 6/23/96).

 #10.2   Directors' Retirement Plan effective as of 1/1/92 (incorporated by
         reference to Exhibit 10.12 to HTI's Annual Report on Form 10-K for the
         fiscal year ended 9/27/92) and Amendment effective as of 11/19/97
         (incorporated by reference to Exhibit 10.5 to HTI's Quarterly Report on
         Form 10-Q for the quarter ended 12/28/97).

 #10.3   1988 Stock Option Plan (incorporated by reference to Exhibit 10.8 to
         HTI's Annual Report on Form 10-K for the fiscal year ended 9/25/88),
         Amendment to the 1988 Stock Option Plan (incorporated by reference to
         Exhibit 10.5 to HTI's Annual Report on Form 10-K for the fiscal year
         ended 9/26/93), and Amendment to the 1988 Stock Option Plan
         (incorporated by reference to Exhibit 10.5 to HTI's Quarterly Report on
         Form 10-Q for the quarter ended 3/26/95).


                                       18
<PAGE>


  10.4   Patent License Agreement, effective as of 9/1/94, between HTI and
         International Business Machines Corporation (incorporated by reference
         to Exhibit 10.11 to HTI's Quarterly Report on Form 10-Q/A for the
         quarter ended 6/25/95).

  10.5   Lease Agreement between Meridian Eau Claire LLC and HTI, dated 5/1/96
         (incorporated by reference to Exhibit 10.10 to HTI's Quarterly Report
         on Form 10-Q for the quarter ended 6/23/96) and First Amendment to
         Lease (incorporated by reference to Exhibit 10.6 to HTI's Annual Report
         on Form 10-K for the fiscal year ended 9/24/00).

  10.6   Master Lease Agreement dated as of 12/19/96 between General Electric
         Capital Corporation, as Lessor ("GE"), and HTI, as Lessee (incorporated
         by reference to Exhibit 10.11 to HTI's Quarterly Report on Form 10-Q
         for the quarter ended 12/29/96), Amendment dated 6/30/97 to the Master
         Lease Agreement between GE and HTI (incorporated by reference to
         Exhibit 10.11 to HTI's Quarterly Report on Form 10-Q for the quarter
         ended 12/28/97), letter amendment dated 3/5/98 to the Master Lease
         Agreement between GE and HTI (incorporated by reference to Exhibit
         10.11 to HTI's Quarterly Report on Form 10-Q for the quarter ended
         3/29/98), letter amendment dated 9/25/98 to the Master Lease Agreement
         between GE and HTI (incorporated by reference to Exhibit 10.11 to HTI's
         Annual Report on Form 10-K for the fiscal year ended 9/27/98), letter
         amendment dated 1/11/00, effective as of 12/22/99, to the Master Lease
         Agreement between GE and HTI (incorporated by reference to Exhibit 10.1
         to HTI's Quarterly Report on Form 10-Q for the quarter ended 12/26/99),
         and letter amendment dated 8/31/00 to the Master Lease Agreement
         between GE and HTI (incorporated by reference to Exhibit 10.7 to HTI's
         Annual Report on Form 10-K for the fiscal year ended 9/24/00).

 #10.7   Hutchinson Technology Incorporated 1996 Incentive Plan (incorporated by
         reference to Exhibit 10.12 to HTI's Quarterly Report on Form 10-Q for
         the quarter ended 12/29/96).

 #10.8   Hutchinson Technology Incorporated Incentive Bonus Plan (incorporated
         by reference to Exhibit 10.13 to HTI's Quarterly Report on Form 10-Q
         for the quarter ended 12/28/97).

 #10.9   Description of Fiscal Year 2002 Management Bonus Plan of Hutchinson
         Technology Incorporated (incorporated by reference to Exhibit 10.9 to
         HTI's Quarterly Report on Form 10-Q for the quarter ended 12/30/01).

#10.10   Description of Fiscal Year 2002 BioMeasurement Division Bonus Plan of
         Hutchinson Technology Incorporated (incorporated by reference to
         Exhibit 10.10 to HTI's Quarterly Report on Form 10-Q for the quarter
         ended 12/30/01).

# Management contract, compensatory plan or arrangement required to be filed as
  an exhibit to this Quarterly Report on Form 10-Q.

(B)  REPORTS ON FORM 8-K:

No Current Reports on Form 8-K were filed by the Company during the thirteen
weeks ended March 31, 2002.


                                       19
<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.


                                          HUTCHINSON TECHNOLOGY INCORPORATED


Date: April 29, 2002                   By /s/ Wayne M. Fortun
      --------------                      -------------------------------------
                                          Wayne M. Fortun
                                          President and Chief Executive Officer



Date: April 29, 2002                   By /s/ John A. Ingleman
      --------------                      -------------------------------------
                                          John A. Ingleman
                                          Vice President, Chief Financial
                                          Officer and Secretary


<PAGE>


                                INDEX TO EXHIBITS

<Table>
<Caption>
Exhibit
  No.                                                                                      Page
-------                                                                                    -----
<S>      <C>                                                                           <C>
3.1      Restated Articles of Incorporation of HTI, as amended by Articles of          Incorporated by
         Amendment dated 1/27/88 and as amended by Articles of Amendment dated         Reference
         1/21/97 (incorporated by reference to Exhibit 3.1 to HTI's Quarterly
         Report on Form 10-Q for the quarter ended 6/29/97).

3.2      Restated By-Laws of HTI (incorporated by reference to Exhibit 3.2 to          Incorporated by
         HTI's Quarterly Report on Form 10-Q for the quarter ended 12/29/96) and       Reference
         Amendments to Restated By-Laws of HTI dated 7/19/00 (incorporated by
         reference to Exhibit 3.2 to HTI's Quarterly Report on Form 10-Q for the
         quarter ended 6/25/00).

4.1      Instruments defining the rights of security holders, including an
         indenture. The Registrant agrees to furnish the Securities and Exchange
         Commission upon request copies of instruments with respect to long-term
         debt.

4.2      Indenture dated as of 3/18/98 between HTI and U.S. Bank National              Incorporated by
         Association, as Trustee (incorporated by reference to Exhibit 4.6 to          Reference
         HTI's Registration Statement on Form S-3, Registration No. 333-50143).

4.3      Purchase Agreement dated 3/12/98 by and among HTI, NationsBanc                Incorporated by
         Montgomery Securities LLC and First Chicago Capital Markets, Inc.             Reference
         (incorporated by reference to Exhibit 4.7 to HTI's Registration
         Statement on Form S-3, Registration No. 333-50143).

4.4      Shelf Registration Agreement dated as of 3/18/98 by and among HTI,            Incorporated by
         NationsBanc Montgomery Securities LLC and First Chicago Capital               Reference
         Markets, Inc. (incorporated by reference to Exhibit 4.8 to HTI's
         Registration Statement on Form S-3, Registration No. 333-50143).

10.1     Office/Warehouse Lease between OPUS Corporation, Lessor, and HTI,             Incorporated by
         Lessee, dated 12/29/95 (incorporated by reference to Exhibit 10.2 to          Reference
         HTI's Quarterly Report on Form 10-Q for the quarter ended 3/24/96), and
         First Amendment to Office/Warehouse Lease dated 4/30/96 (incorporated
         by reference to Exhibit 10.2 to HTI's Quarterly Report on Form 10-Q for
         the quarter ended 6/23/96).
</Table>


<PAGE>


<Table>
<Caption>
Exhibit
  No.                                                                                      Page
-------                                                                                    -----
<S>      <C>                                                                           <C>
10.2     Directors' Retirement Plan effective as of 1/1/92 (incorporated by            Incorporated by
         reference to Exhibit 10.12 to HTI's Annual Report on Form 10-K for the        Reference
         fiscal year ended 9/27/92) and Amendment effective as of 11/19/97
         (incorporated by reference to Exhibit 10.5 to HTI's Quarterly Report on
         Form 10-Q for the quarter ended 12/28/97).

10.3     1988 Stock Option Plan (incorporated by reference to Exhibit 10.8 to          Incorporated by
         HTI's Annual Report on Form 10-K for the fiscal year ended 9/25/88),          Reference
         Amendment to the 1988 Stock Option Plan (incorporated by reference to
         Exhibit 10.5 to HTI's Annual Report on Form 10-K for the fiscal year
         ended 9/26/93), and Amendment to the 1988 Stock Option Plan
         (incorporated by reference to Exhibit 10.5 to HTI's Quarterly Report on
         Form 10-Q for the quarter ended 3/26/95).

10.4     Patent License Agreement, effective as of 9/1/94, between HTI and             Incorporated by
         International Business Machines Corporation (incorporated by reference        Reference
         to Exhibit 10.11 to HTI's Quarterly Report on Form 10-Q/A for the
         quarter ended 6/25/95).

10.5     Lease Agreement between Meridian Eau Claire LLC and HTI, dated 5/1/96         Incorporated by
         (incorporated by reference to Exhibit 10.10 to HTI's Quarterly Report         Reference
         on Form 10-Q for the quarter ended 6/23/96) and First Amendment to
         Lease (incorporated by reference to Exhibit 10.6 to HTI's Annual Report
         on Form 10-K for the fiscal year ended 9/24/00).

10.6     Master Lease Agreement dated as of 12/19/96 between General Electric          Incorporated by
         Capital Corporation, as Lessor ("GE"), and HTI, as Lessee (incorporated       Reference
         by reference to Exhibit 10.11 to HTI's Quarterly Report on Form 10-Q
         for the quarter ended 12/29/96), Amendment dated 6/30/97 to the Master
         Lease Agreement between GE and HTI (incorporated by reference to
         Exhibit 10.11 to HTI's Quarterly Report on Form 10-Q for the quarter
         ended 12/28/97), letter amendment dated 3/5/98 to the Master Lease
         Agreement between GE and HTI (incorporated by reference to Exhibit
         10.11 to HTI's Quarterly Report on Form 10-Q for the quarter ended
         3/29/98), letter amendment dated 9/25/98 to the Master Lease Agreement
         between GE and HTI (incorporated by reference to Exhibit 10.11 to HTI's
         Annual Report on Form 10-K for the fiscal year ended 9/27/98), letter
         amendment dated 1/11/00, effective as of 12/22/99, to the Master Lease
         Agreement between GE and HTI (incorporated by reference to Exhibit 10.1
         to HTI's Quarterly Report on Form 10-Q for the quarter ended 12/26/99),
         and letter amendment dated 8/31/00 to the Master Lease Agreement
         between GE and HTI (incorporated by reference to Exhibit 10.7 to HTI's
         Annual Report on Form 10-K for the fiscal year ended 9/24/00).
</Table>


<PAGE>


<Table>
<Caption>
Exhibit
  No.                                                                                      Page
-------                                                                                    -----
<S>      <C>                                                                           <C>
10.7     Hutchinson Technology Incorporated 1996 Incentive Plan (incorporated by       Incorporated by
         reference to Exhibit 10.12 to HTI's Quarterly Report on Form 10-Q for         Reference
         the quarter ended 12/29/96).

10.8     Hutchinson Technology Incorporated Incentive Bonus Plan (incorporated         Incorporated by
         by reference to Exhibit 10.13 to HTI's Quarterly Report on Form 10-Q          Reference
         for the quarter ended 12/28/97).

10.9     Description of Fiscal Year 2002 Management Bonus Plan of Hutchinson           Incorporated by
         Technology Incorporated (incorporated by reference to Exhibit 10.9 to         Reference
         HTI's Quarterly Report on Form 10-Q for the quarter ended 12/30/01).

10.10    Description of Fiscal Year 2002 BioMeasurement Division Bonus Plan of         Incorporated by
         Hutchinson Technology Incorporated (incorporated by reference to              Reference
         Exhibit 10.10 to HTI's Quarterly Report on Form 10-Q for the quarter
         ended 12/30/01).
</Table>