UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549





FORM 10-Q/A

(Amendment No. 1)





(Mark One)

|þ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended March 27, 2011

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 001-34838





Hutchinson Technology Incorporated

(Exact name of registrant as specified in its charter)







|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Minnesota                                                      |  | 41-0901840                          
|(State or other jurisdiction of
incorporation or organization) |  | (I.R.S. Employer Identification No.)
|                                                               | 
|40 West Highland Park Drive N.E.
Hutchinson, Minnesota         |  | 55350                               
|(Address of principal executive offices)                       |  | (Zip Code)                          

(320)
587-3797

(Registrants telephone number, including area code)

(Former name, former address and former 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  þ    No   ̈

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule
405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files.)    Yes   ̈    No   ̈

Indicate
by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of large accelerated filer, accelerated filer, and smaller
reporting company in Rule 12b-2 of the Exchange Act.



|                        |  |   |  |                           |  |  
|----------------------- |  | - |  | ------------------------- |  | -
|Large accelerated filer |  |  ̈ |  | Accelerated filer         |  | þ
|                        |  |   | 
|Non-accelerated filer   |  |  ̈ |  | Smaller reporting company |  |  ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes   ̈    No  þ

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 26, 2011, the registrant had 23,378,788 shares of common stock issued and outstanding.









---

Explanatory Note

We are filing this Amendment No. 1 on Form 10-Q/A to correct a typographical error in the text of Exhibit 10.1 to our Quarterly
Report on Form 10-Q for the fiscal quarter ended March 27, 2011 (the Original Report), filed with the Securities and Exchange Commission (SEC) on April 28, 2011. Pursuant to Rule 12b-15 under the Securities Exchange
Act of 1934, as amended, this amendment contains the complete text of Part II, Item 6, as amended.

Except as described above,
we have not modified or updated other disclosures presented in the Original Report. This Amendment does not amend, update or change the financial statements or any other disclosures in the Original Report and does not reflect events occurring after
the filing of the Original Report. This Amendment should be read in conjunction with our other filings with the SEC subsequent to the filing of the Original Report.

PART II. OTHER INFORMATION

ITEM 6. EXHIBITS

(a) Exhibits:

Unless
otherwise indicated, all documents incorporated herein by reference to a document filed with the SEC pursuant to the Exchange Act, are located under SEC file number 001-34838.



|      |  |                                                                                                                                                                                                            
|----- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      | 
|3.1   |  | Amended and Restated Articles of Incorporation of HTI (incorporated by reference to Exhibit 3.1 to HTIs Quarterly Report on Form 10-Q for the quarter ended 12/29/2002; File
No. 0-14709).                
|      | 
|3.2   |  | Restated By-Laws of HTI, as amended December 3, 2008 (incorporated by reference to Exhibit 3.1 to HTIs Current Report on Form 8-K filed 12/9/2008; File No.
0-14709).                                     
|      | 
|4.1   |  | Indenture, dated as of February 11, 2011, among HTI and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 to HTIs Current Report on
Form 8-K filed 02/11/2011).
|      | 
|4.2   |  | 8.50% Convertible Senior Note due 2026 (incorporated by reference to Exhibit 4.2 to HTIs Current Report on Form 8-K filed 02/11/2011).                                                                    
|      | 
|#10.1 |  | HTI Severance Pay Plan (as amended and restated effective March 8, 2011).                                                                                                                                  
|      | 
|31.1  |  | Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer.                                                                                                                                         
|      | 
|31.2  |  | Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer.                                                                                                                                         
|      | 
|32    |  | Section 1350 Certifications.*                                                                                                                                                                              



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

|* | Previously filed.
|- | -----------------



2



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SIGNATURES

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



|      |  |               |  |  |  |                                    |  |                                                            
|----- |  | ------------- |  |  |  | ---------------------------------- |  | -----------------------------------------------------------
|      |  |               |  |  |  | HUTCHINSON TECHNOLOGY INCORPORATED
|      |  |               |  | 
|Date: |  | June 15, 2011 |  |  |  | By                                 |  | /s/    WAYNE M.
FORTUN                                     
|      |  |               |  |  |  |                                    |  | Wayne M. Fortun President and Chief Executive Officer      
|      |  |               |  | 
|Date: |  | June 15, 2011 |  |  |  | By                                 |  | /s/    DAVID P.
RADLOFF                                    
|      |  |               |  |  |  |                                    |  | David P. Radloff Vice President and Chief Financial Officer



---

INDEX TO EXHIBITS



|            |  |                                                                                                             |  |                          
|----------- |  | ----------------------------------------------------------------------------------------------------------- |  | -------------------------
|Exhibit
No. |  | Description                                                                                                 |  | Method of Filing         
|            |  |                                                                                                            
|3.1         |  | Amended and Restated Articles of Incorporation of HTI.                                                      |  | Incorporated by Reference
|            |  |                                                                                                            
|3.2         |  | Restated By-Laws of HTI, as amended December 3, 2008.                                                       |  | Incorporated by Reference
|            |  |                                                                                                            
|4.1         |  | Indenture, dated as of February 11, 2011, among HTI and Wells Fargo Bank, National Association, as trustee. |  | Incorporated by Reference
|            |  |                                                                                                            
|4.2         |  | 8.50% Convertible Senior Note due 2026.                                                                     |  | Incorporated by Reference
|            |  |                                                                                                            
|10.1        |  | HTI Severance Pay Plan (as amended and restated effective March 8, 2011).                                   |  | Filed Electronically     
|            |  |                                                                                                            
|31.1        |  | Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer.                                          |  | Filed Electronically     
|            |  |                                                                                                            
|31.2        |  | Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer.                                          |  | Filed Electronically     
|            |  |                                                                                                            
|32          |  | Section 1350 Certifications.                                                                                |  | Previously Filed