##### Table of Contents



UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 WASHINGTON, D.C. 20549
 FORM 10-Q/A
 (Amendment No.1)
  þ
    
    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 For the quarterly period ended September 30, 2006
 OR
 o
    
    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 000-17157
 NOVELLUS SYSTEMS, INC.
 (Exact name of Registrant as specified in its charter)
 California
    
    77-0024666(State or other jurisdiction of
    
    (I.R.S. Employer Identificationincorporation or organization)
    
    Number)
 4000 North First Street, San Jose, California 95134  (Address of principal executive offices including zip code)
 (408) 943-9700  (Registrants telephone number, including area code)
 þ o
  Large accelerated filer þ
    
    Accelerated filer o
    
    Non-accelerated filer o
 o þ




---



TABLE OF CONTENTS  EXPLANATORY NOTEITEM 2: UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDSITEM 6: ExhibitsSIGNATURESExhibit IndexEXHIBIT 31.1EXHIBIT 31.2    Table of Contents  
    
 ITEM 2: UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
 Repurchase of Company Securities
 TotalNumber ofNumber
    
    
    Shares
    
    
    Approximateof Shares
    
    
    Purchased
    
    
    Dollar Value ofPurchased
    
    
    as Part of
    
    
    Shares thatTotal
    
    
    as Part of
    
    
    Publicly
    
    
    May yet beNumber of
    
    
    Average
    
    
    Announced
    
    
    PurchasedShares
    
    
    Price Paid
    
    
    Plans or
    
    
    Under the PlansPeriod
    
    Purchased
    
    
    Per share
    
    
    Programs
    
    
    or ProgramsJuly 2, 2006 to August 5, 2006
    
    
    437,400
    
    
    
    22.77
    
    
    
    437,400
    
    
    $613.3millionAugust 6, 2006 to September 2, 2006
    
    
    
    
    
    
    
    
    
    
    
    
    
    $613.3millionSeptember 3, 2006 to September 30, 2006
    
    
    
    
    
    
    
    
    
    
    
    
    
    $613.3millionTotal
    
    
    437,400
    
    
    
    22.77
    
    
    
    437,400
    
    
    $613.3million
   
 ITEM 6: Exhibits
  31.1
    
    Certification of Richard S. Hill, Chairman of the Board of Directors
and Chief Executive Officer of Novellus Systems, Inc. dated November
28, 2006 in accordance with Rules 13a-14(a) and 15d-14(a) of the
Securities Exchange Act, as amended, as adopted pursuant to Section
302 of the Sarbanes-Oxley Act of 2002.31.2
    
    Certification of William H. Kurtz, Executive Vice President and Chief
Financial Officer of Novellus Systems, Inc. dated November 28, 2006 in
accordance with Rules 13a-14(a) and 15d-14(a) of the Securities
Exchange Act, as amended, as adopted pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002.




---



##### Table of Contents



SIGNATURES
  NOVELLUS SYSTEMS, INC.By:
    /s/ William H. KurtzWilliam H. KurtzExecutive Vice President and Chief Financial Officer
(Principal Financial Officer)November 28, 2006




---



##### Table of Contents



31.1
    
    Certification of Richard S. Hill, Chairman of the Board of Directors
and Chief Executive Officer of Novellus Systems, Inc. dated November
28, 2006 in accordance with Rules 13a-14(a) and 15d-14(a) of the
Securities Exchange Act, as amended, as adopted pursuant to Section
302 of the Sarbanes-Oxley Act of 2002.31.2
    
    Certification of William H. Kurtz, Executive Vice President and Chief
Financial Officer of Novellus Systems, Inc. dated November 28, 2006 in
accordance with Rules 13a-14(a) and 15d-14(a) of the Securities
Exchange Act, as amended, as adopted pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002.