<SUBMISSION>
<ACCESSION-NUMBER>0000891618-01-500819
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<ITEMS>5
<ITEMS>7
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<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>LAM RESEARCH CORP
<CIK>0000707549
<ASSIGNED-SIC>3559
<IRS-NUMBER>942634797
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0630
</COMPANY-DATA>
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<FORM-TYPE>8-K
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<FILM-NUMBER>1642935
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<BUSINESS-ADDRESS>
<STREET1>4650 CUSHING PKWY
<CITY>FREMONT
<STATE>CA
<ZIP>94538
<PHONE>5106590200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4650 CUSHING PARKWAY
<CITY>FREMONT
<STATE>CA
<ZIP>94538
</MAIL-ADDRESS>
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<TYPE>8-K
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<FILENAME>f72868e8-k.txt
<DESCRIPTION>FORM 8-K
<TEXT>

<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                 ---------------

                                    FORM 8-K

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


                                  MAY 16, 2001
                Date of Report (Date of earliest event reported)


                            LAM RESEARCH CORPORATION
             (Exact Name of Registrant, as Specified in its Charter)

                    ----------------------------------------


<TABLE>
<CAPTION>
          DELAWARE                                 000-12933                               94-2634797
<S>                                         <C>                                       <C>
      (State or other                       (Commission File Number)                    (I.R.S. Employer
      Jurisdiction of                                                                 Identification No.)
       Incorporation)
</TABLE>


                    ----------------------------------------

                              4650 CUSHING PARKWAY
                                FREMONT, CA 94538

               (Address of Principal Executive Offices) (Zip Code)



       Registrant's telephone number, including area code: (510) 659-0200


              -----------------------------------------------------




<PAGE>   2





ITEM 5.  OTHER EVENTS.

         Offering of Convertible Subordinated Notes

         On May 16, 2001, Lam Research Corporation (the "Company") issued a
press release announcing its intention to offer convertible subordinated notes
for sale in a Rule 144A private placement.

         Attached hereto as Exhibit 99.1 is the Company's press release dated
May 16, 2001.

         On May 17, 2001, the Company announced pricing of $250 million of
convertible subordinated notes due 2006 (plus an additional amount up to $50
million at the option of the purchasers). The Company announced that the notes
are convertible into common stock of the company at a conversion price of $44.93
per share and will accrue interest at an annual rate of 4.0 percent. The Company
stated that consummation of the sale of the notes is subject to customary
closing conditions and is scheduled to occur in May 2001.

         Attached hereto as Exhibit 99.2 is the Company's press release dated
May 17, 2001.

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits

         (c) Exhibits

             99.1   Lam Research Corporation Press Release, dated May 16, 2001.

             99.2   Lam Research Corporation Press Release, dated May 17, 2001.



<PAGE>   3


                                    SIGNATURE

         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, hereunto duly authorized.

                                          LAM RESEARCH CORPORATION

                                          /s/ Craig Garber
                                          ------------------------------------
                                          By: Craig Garber
                                          Title: Vice President of Finance,
                                                 Treasurer

Date:  May 17, 2001



<PAGE>   4




                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
                                                                     Page No. in
                                                                     Sequentially
Exhibit No.                        Description                   Numbered Current Report
-----------                        -----------                   --------------------
<S>             <C>                                                  <C>
   99.1         Lam Research Corporation Press Release dated           __
                May 16, 2001.

   99.2         Lam Research Corporation Press Release dated           __
                May 17, 2001.
</TABLE>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>f72868ex99-1.txt
<DESCRIPTION>EXHIBIT 99.1
<TEXT>

<PAGE>   1
                                                                    EXHIBIT 99.1

LAM RESEARCH CORPORATION ANNOUNCES INTENT TO OFFER CONVERTIBLE
SUBORDINATED NOTES

         FREMONT, Calif.--May 16, 2001--Lam Research Corporation (Nasdaq:LRCX -
news) today announced it intends to offer $200 million of convertible
subordinated notes (plus an additional amount of up to $50 million at the option
of the purchasers) for sale in a private placement, subject to market and other
conditions. It is contemplated that the notes will have a term of five years and
be convertible into Lam common stock at a price to be determined. The offering
is expected to close during May 2001.

         The Company stated that it intends to use the net proceeds of the
offering for general corporate purposes, including working capital.

         This announcement is neither an offer to sell nor a solicitation of an
offer to buy any of these securities. The securities to be offered will not be
registered under the Securities Act of 1933, as amended, or applicable state
securities laws, and are only being offered to qualified institutional buyers in
reliance on Rule 144A under the Securities Act. Unless so registered, the notes
and any common stock issued upon conversion of the notes may not be offered or
sold in the United States except pursuant to an exemption from the registration
requirements of the Securities Act and applicable state securities laws.

         Lam Research Corporation is a leading supplier of wafer fabrication
equipment and services to the world's semiconductor industry. The Company's
common stock trades on the Nasdaq National Market under the symbol LRCX. Lam's
World Wide Web address is http://www.lamrc.com.


</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>f72868ex99-2.txt
<DESCRIPTION>EXHIBIT 99.2
<TEXT>

<PAGE>   1
                                                                    EXHIBIT 99.2

LAM RESEARCH CORPORATION PRICES CONVERTIBLE SUBORDINATED NOTES

         FREMONT, Calif.--May 17, 2001 -- Lam Research Corporation (Nasdaq: LRCX
- news) today announced it has priced its previously announced private placement
of $250 million of convertible subordinated notes due 2006 (plus an additional
amount up to $50 million at the option of the purchasers).

         The notes will be convertible into common stock of the company at a
conversion price of $44.93 per share and will accrue interest at an annual rate
of 4.0 percent. These notes will mature in five years and will not be callable
for the first three years. The transaction is expected to close in May 2001. The
closing is subject to customary closing conditions. The Company stated that it
intends to use the net proceeds of the transaction for general corporate
purposes, including working capital.

         This announcement is neither an offer to sell nor a solicitation of an
offer to buy any of these securities. The securities to be offered will not be
registered under the Securities Act of 1933, as amended, or applicable state
securities laws, and are only being offered to qualified institutional buyers in
reliance on Rule 144A under the Securities Act. Unless so registered, the notes
and any common stock issued upon conversion of the notes may not be offered or
sold in the United States except pursuant to an exemption from the registration
requirements of the Securities Act and applicable state securities laws.
</TEXT>
</DOCUMENT>
</SUBMISSION>
