UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 2)* ART TECHNOLOGY GROUP, INC. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) CUSIP NO. 458727 20 3 -------------------------------------------------------------------------------- (CUSIP Number) James H. Dennedy Richard S. Rofe Mitchell-Wright Technology Group, LLC Mitchell-Wright Technology Group, LLC 8060 Montgomery Road, Suite 205 185 Great Neck Road, Suite 460 Cincinnati, OH 45236 Great Neck, NY 11020 -------------------------------------------------------------------------------- (513) 792-5100 (516) 466-5258 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications September 20, 2004 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of This Statement) If the person filing has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of ss. 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. |_| NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 2 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). SSH Partners I, LLP -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 125,000 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 125,000 --------------------------------- (10) Shared Dispositive Power 0 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 125,000 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.2% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) PN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 3 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Mitchell-Wright Technology Group, LLC 41-2142179 -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 125,000 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 125,000 --------------------------------- (10) Shared Dispositive Power 0 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 125,000 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.2% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 4 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Mitchell-Wright, LLC -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 125,000 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 125,000 --------------------------------- (10) Shared Dispositive Power 0 ------------------------------------------------------------ ------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 125,000 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.2% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 5 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). James Dennedy -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) PF/AF -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 145,000 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 145,000 --------------------------------- (10) Shared Dispositive Power 0 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 145,000 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.2% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 6 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Arcadia Partners, L.P. -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 36,744 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 36,744 --------------------------------- (10) Shared Dispositive Power 0 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 36,744 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.0% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) PN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 7 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Arcadia Capital Management, LLC -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 36,744 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 36,744 --------------------------------- (10) Shared Dispositive Power 0 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 36,744 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.0% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 8 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Richard Rofe -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 172,244 --------------------------------- (8) Shared Voting Power 0 --------------------------------- (9) Sole Dispositive Power 172,244 --------------------------------- (10) Shared Dispositive Power 0 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 172,244 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.2% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 9 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Parche, LLC 20-0870632 -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 620,776 --------------------------------- (9) Sole Dispositive Power --------------------------------- (10) Shared Dispositive Power 620,776 ------------------------------------------------------------ ------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 620,776 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 0.8% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 10 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Starboard Value & Opportunity Fund, LLC -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,259,080 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,259,080 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,259,080 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 4.4% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 11 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Admiral Advisors, LLC -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 12 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Ramius Capital Group, LLC -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 13 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). C4S & Co., LLC -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 14 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Peter A. Cohen -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 15 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Morgan B. Stark -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 16 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Jeffrey M. Solomon -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 ------------------------------------------------------------ ------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! SCHEDULE 13D CUSIP NO. 458727 20 3 PAGE 17 OF 23 PAGES -------------------------------------------------------------------------------- (1) Names of Reporting Persons. S.S. or Identification Nos. of above persons (entities only). Thomas W. Strauss -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member (a) /x/ of a Group (See Instructions) (b) // -------------------------------------------------------------------------------- (3) Sec Use Only -------------------------------------------------------------------------------- (4) Source of Funds (see instructions) WC -------------------------------------------------------------------------------- (5) Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e). -------------------------------------------------------------------------------- (6) Citizenship or Place of Organization USA -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each (7) Sole Voting Power Reporting Person with: 0 --------------------------------- (8) Shared Voting Power 3,879,856 --------------------------------- (9) Sole Dispositive Power 0 --------------------------------- (10) Shared Dispositive Power 3,879,856 -------------------------------------------------------------------------------- (11) Aggregate Amount Beneficially Owned by Each Reporting Person 3,879,856 -------------------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) // -------------------------------------------------------------------------------- (13) Percent of Class Represented by Amount in Row (11) 5.3% -------------------------------------------------------------------------------- (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! ITEM 1. SECURITY AND ISSUER This Amendment No. 2 to Schedule 13D relates to shares of the Common Stock, par value $0.01 per share ("Common Stock"), of Art Technology Group, Inc. (the "Issuer" or the "Company") and is being filed on behalf of the undersigned to amend the Schedule 13D which was originally filed on August 24, 2004, and amended on September 10, 2004 (the "Schedule 13D"). Unless otherwise indicated, all capitalized terms used herein but not defined herein shall have the same meanings as set forth in the Schedule 13D. ITEM 2. IDENTITY AND BACKGROUND This Amendment No. 2 to Schedule 13D is filed by a group consisting of SSH Partners I, LP, Mitchell-Wright Technology Group, LLC, Mitchell-Wright, LLC, James Dennedy, Arcadia Partners, L.P., Arcadia Capital Management, LLC, Richard Rofe, Parche, LLC, Starboard Value & Opportunity Fund, LLC, Admiral Advisors, LLC, Ramius Capital Group, LLC, C4S & Co., LLC, Peter A. Cohen, Morgan B. Stark, Jeffrey M. Solomon, and Thomas W. Strauss (collectively, the "Reporting Persons"). ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION None of the Reporting Persons has purchased additional shares of Common Stock since the filing of the most recent amendment to the Schedule 13D. ITEM 4. PURPOSE OF THE TRANSACTION On September 20, 2004, Mitchell-Wright Technology Group, LLC ("MWTG") issued a letter to the stockholders of the Company announcing its intention to vote against the proposed merger of the Company with Primus Knowledge Solutions, Inc. ("PKSI"). A copy of the letter is attached as Exhibit 1. In addition, MWTG, SSH Partners I, LP, James Dennedy, Arcadia Partners, L.P., Parche, LLC and Starboard Value & Opportunity Fund, LLC currently intend to solicit proxies against the proposed merger. SHAREHOLDERS ARE ADVISED TO READ THE PROXY STATEMENT AND OTHER DOCUMENTS RELATED TO SOLICITATION OF PROXIES BY MITCHELL WRIGHT TECHNOLOGY GROUP, LLC, SSH PARTNERS I, LP, JAMES DENNEDY, ARCADIA PARTNERS, L.P., PARCHE, LLC AND STARBOARD VALUE & OPPORTUNITY FUND, LLC FROM THE SHAREHOLDERS OF ART TECHNOLOGY GROUP, INC. FOR USE AT ITS SPECIAL MEETING WHEN AND IF THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. WHEN AND IF COMPLETED, A DEFINITIVE PROXY STATEMENT AND A FORM OF PROXY WILL BE MAILED TO SHAREHOLDERS OF ART TECHNOLOGY GROUP, INC. AND WILL BE AVAILABLE AT NO CHARGE AT THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE AT HTTP://WWW.SEC.GOV. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER (a), (b) As of September 20, 2004, the aggregate number of shares of Common Stock to which this Schedule 13D relates is 4,197,100 shares, representing 5.7% of the 73,828,622 shares of Common Stock reported by the Company to be issued and outstanding as of June 30, 2004, in its Form 10-Q filed with the Securities and Exchange Commission on August 9, 2004. The Reporting Persons beneficially own those shares as follows: As of the date hereof, Parche, LLC beneficially owns an aggregate of 620,776 shares of Common Stock, representing approximately 0.8% of the shares of Common Stock presently outstanding. In addition, by virtue of the relationships described under Item 2 of this Schedule 13D, each of Admiral Advisors, LLC, Ramius Capital Group, LLC, C4S & Co., Peter A. Cohen, Morgan B. Stark, Jeffrey M. Solomon and Thomas W. Strauss may be deemed to have an indirect beneficial ownership of all the shares of Common Stock beneficially owned by Parche, LLC. As of the date hereof, Starboard Value & Opportunity Fund, LLC beneficially owns an aggregate of 3,259,080 shares of Common Stock, representing approximately 4.4% of the outstanding shares of Common Stock. In addition, by virtue of the relationships described under Item 2 of this Schedule 13D, each of Admiral Advisors, LLC, Ramius Capital Group, LLC, C4S & Co., LLC, Peter A. Cohen, Morgan B. Stark, Jeffrey M. Solomon and Thomas W. Strauss may be deemed to have an indirect beneficial ownership of all the shares of Common Stock beneficially owned by Starboard Value & Opportunity Fund, LLC. Each of Messrs. Cohen, Stark, Solomon and Strauss shares voting and dispositive power with respect to both the 620,776 shares of Common Stock owned by Parche, LLC and the 3,259,080 shares of Common Stock owned by Starboard Value & Opportunity Fund, LLC by virtue of their status as joint managing members of C4S & Co., LLC, the Managing Member of Ramius Capital Group, LLC, which in turn is the Managing Member of Admiral Advisors, LLC, which is the Managing Member of both Parche, LLC and Starboard Value & Opportunity Fund, LLC. Messrs. Cohen, Stark, Solomon, and Strauss, C4S & Co., LLC, Ramius Capital Group, LLC and Admiral Advisors, LLC each disclaim beneficial ownership of the shares of the Issuer's Common Stock held of record by Parche, LLC and Starboard Value & Opportunity Fund, LLC, and the filing of this Schedule 13D shall not be construed as an admission that any such person is the beneficial owner of any such securities. (c) Not applicable (d) Not applicable (e) Not applicable ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER MWTG, Parche, LLC, and Starboard Value and Opportunity Fund, LLC have an agreement pursuant to which MWTG provides advice and services with respect to the parties' investments in the Common Stock of the Issuer, among other matters. Under such agreement, the parties agree to coordinate the acquisition and disposition of Common Stock of the Issuer with MWTG and to cooperate with respect to proxy votes and related matters (however, each of the parties to the agreement retains the sole discretion over acquisitions and dispositions of, and voting authority over, the shares of Common Stock that it holds). For such services, MWTG receives an amount equal to a percentage of the profits realized by such parties on their investment in the Issuer. The parties have also agreed to share expenses incurred by the group. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS Exhibit 1: Letter to Stockholders of Art Technology Group, Inc., dated September 20, 2004. -------------------------------------------------------------------------------- SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. September 20, 2004 SSH Partners I, LP By: Mitchell-Wright Technology Group, LLC, its General Partner /s/ James Dennedy ------------------------------------------ By: James Dennedy Managing Member September 20, 2004 Mitchell-Wright Technology Group, LLC By: Mitchell-Wright, LLC, its Managing Member /s/ James Dennedy ------------------------------------------ By: James Dennedy Managing Member September 20, 2004 Mitchell-Wright, LLC /s/ James Dennedy ------------------------------------------ By: James Dennedy Managing Member September 20, 2004 /s/ James Dennedy ------------------------------------------ James Dennedy -------------------------------------------------------------------------------- September 20, 2004 Arcadia Partners, L.P. By: Arcadia Capital Management, LLC, its General Partner /s/ Richard Rofe ----------------------------------------- By: Richard Rofe Member September 20, 2004 Arcadia Capital Management, LLC /s/ Richard Rofe ----------------------------------------- By: Richard Rofe Member September 20, 2004 /s/ Richard Rofe ----------------------------------------- Richard Rofe September 20, 2004 Parche, LLC By: Admiral Advisors, LLC, its managing member /s/ Jeffrey M. Solomon ----------------------------------------- By: Jeffrey M. Solomon Authorized Signatory September 20, 2004 Starboard Value & Opportunity Fund, LLC By: Admiral Advisors, LLC, its managing member /s/ Jeffrey M. Solomon ----------------------------------------- By: Jeffrey M. Solomon Authorized Signatory September 20, 2004 Ramius Capital Group, LLC By: C4S & Co., LLC, its Managing Member /s/ Jeffrey M. Solomon ------------------------------------------ By:Jeffrey M. Solomon Authorized Signatory September 20, 2004 C4S & Co., LLC /s/ Jeffrey M. Solomon ------------------------------------------ By:Jeffrey M. Solomon Authorized Signatory September 20, 2004 /s/ Peter A. Cohen ------------------------------------------ Peter A. Cohen September 20, 2004 /s/ Morgan B. Stark ------------------------------------------ Morgan B. Stark September 20, 2004 /s/ Jeffrey M. Solomon ------------------------------------------ Jeffrey M. Solomon September 20, 2004 /s/ Thomas W. Strauss ------------------------------------------ Thomas W. Strauss SCHEDULE I This schedule sets forth information with respect to each purchase and sale of Common Stock which was effectuated by a Reporting Person since the filing of the Schedule 13D. All transactions were effectuated in the open market through a broker. Parche, LLC ----------- Number of Shares Date Purchased/(Sold) Price Per Share(1) ---- ---------------- ------------------ Starboard Value and Opportunity Fund, LLC ----------------------------------------- Number of Shares Date Purchased/(Sold) Price Per Share(1) ---- ---------------- ------------------ (1) Excludes commissions and other execution-related costs. Exhibit 1 MITCHELL . WRIGHT TECHNOLOGY GROUP 8060 MONTGOMERY ROAD, SUITE 205 185 GREAT NECK ROAD, SUITE 460 CINCINNATI, OH 45236 GREAT NECK, NY 11020 PHONE: +1 513.792.5100 PHONE: +1.516.466.5258 FAX: +1 413.375.3439 FAX: +1.516.466.7709 September 20, 2004 SHAREHOLDERS Art Technology Group, Inc. Re: Proposed Merger with Primus Knowledge Solutions, Inc. --------------------------------------------------------- Dear Shareholders: Art Technology Group ("ATG"), Inc. has had an exciting 10+ year history of providing strong technology solutions to significant enterprise customers. During those 10+ years, members of Mitchell Wright Technology Group, LLC ("MWTG") have worked with ATG's customers and worked in industry implementing solutions on the ATG platform. Most recently, a group advised by MWTG has become ATG's second largest shareholder. MWTG strongly believes in the Company's greatest assets - its customer base, strong product innovations, high customer loyalty, and a reasonably strong balance sheet. MWTG believes these assets should be protected and profitably enhanced. After detailed analysis, discussions with the Company's management and directors, and much thought and deliberation, MWTG CANNOT support the proposed merger of the Company with Primus Knowledge Solutions, Inc. ("PKSI") as it is currently presented. We believe Management's plan to operate the combined business fails to justify the significantly increased operational and financial risk to shareholders that the merger presents. We believe the actions recommended by Management in the S-4, filed September 8, 2004, threaten the Company's greatest assets, and therefore shareholder value, in the following ways: o Integration will distract management from running the business profitably; o Management's operating plan for the combined businesses fails to strengthen the financial foundation of the business; and o Proposed merger may significantly weaken the balance sheet. ATG's management has not operated the core business profitably, and its Board has not insisted that they do so. We encourage all shareholders to carefully review the performance of the Company under current management. Under current management, the Company has experienced (i) consistently unprofitable operations, (ii) a steady decline in license and maintenance revenues, (iii) significant cash balance erosion; and (iv) staffing levels and non-personnel expenditures significantly out of line with the revenue of the business. 9/20/2004 Page 2 of 4 Management's published plan for the merged companies, endorsed by the Board, does not give confidence that Management can integrate and operate a more complex business profitably. The proposed plan for the merger does not get the Company any closer to profitable operations and positive cash flow than proper cost management would under independent operations. The Company is at a critical financial juncture. The Company must either (i) choose to operate profitably and seek strategic alternatives to independent operations, or (ii) take significant financial risks in trying to become a large, relevant enterprise software company. Management has asked shareholders to accept tremendous risk by approving the merger agreement without providing an action plan that would produce financial results to justify the additional financial and operating risk and dilution. Management's financial basis for the merger is that the acquired revenue ALONG WITH FORECASTS OF REVENUE GROWTH support the $90-95M of planned expenses. However, Management has consistently been unable to accurately forecast the Company's revenues. Management and the board cannot expect shareholders to keep waiting until `next year' for profitable operations. Approving the merger agreement under Management's proposed plan could lead to significant financial stress on the Company. Continued unprofitable operations, as presented in Management's plan for the merged companies, will cause further balance sheet erosion. Weakening the balance sheet increases the risk of achieving future revenue targets as enterprise customers lose confidence in the viability of the business. This vicious cycle will severely limit the Company's future strategic alternatives. Management needs to focus on protecting the balance sheet. Management's plan, if realized, places the Company in a precarious cash position as its NET CASH balance may drop below $30 million, an amount which Management has stated is the critical trough cash necessary to reliably generate revenue by assuring customers of the Company's viability. Yet, after giving effect to the proposed merger, the Company has stated that it will enter 2005 with a cash balance of "something north of $30 million." We question the veracity of this statement. Although Management may be able to post $30 million on the cash line, our analysis indicates that the Company will need to borrow from its working capital line to achieve this objective, thereby having less than $30 million in NET CASH. In order for shareholders to have enough information before voting on the merger agreement, we demand Management clarify their true intentions for the NET CASH balance of the Company by providing shareholders with their projected cash AND debt levels entering 2005. We appreciate that the marriage of ATG's and PKSI's technology presents attractive opportunities, but this will be of little value to shareholders if the foundation of the underlying operating business remains weak. We encourage shareholders, in considering the strength of the technology marriage, particularly as discussed in analyst opinions, to also consider the capability of the Company's management to 9/20/2004 Page 3 of 4 run an operationally sound business. If the combined Company cannot operate profitably, then building the technology stack and revenue line with this acquisition fails to add value, it destroys value. MWTG remains greatly concerned with the level of shareholder representation within Management and the Board of Directors. The lack of shareholder representation has resulted in a disconnect between the owners of the company (the shareholders) and those managing the Company (Management and the Board). The Board and Management must be accountable to the shareholders of the business. Therefore, MWTG believes a change in corporate governance is needed. The Board and Management must understand that they are fiduciaries to the shareholders. The shareholders must demand that the corporate governance of our company be modified to bring the governance more in line with the state of the market and take a more active role in demanding improved financial performance. Based on Management's current operating plan and proposed plan for the combined company, MWTG's recommends the following course of action to the Company and its shareholders: o Vote against the merger; o Demand corporate governance changes to allow shareholders greater ability to influence our company; o Establish profitable operations before growing the Company with acquisitions; and o Pursue other strategic alternatives. MWTG has been and remains committed to working with the Board and Management to create shareholder value. While we are disappointed with the reticence of the Board to exchange ideas, we remain eager to engage in a more active dialog with the Board and Management to build value for all shareholders. Thank you for taking the time to review our proposal and for your continued support of ATG. Very Respectfully, /s/ James H. Dennedy James H. Dennedy Managing Partner Mitchell-Wright Technology Group, LLC cc: Paul Shorthose, Chairman Bob Burke, Director & CEO Phyllis Swersky, Director David Elsbree, Director Ilene Lang, Director Mary Makela, Director John Held, Director SHAREHOLDERS ARE ADVISED TO READ THE PROXY STATEMENT AND OTHER DOCUMENTS RELATED TO SOLICITATION OF PROXIES BY MITCHELL WRIGHT TECHNOLOGY GROUP, LLC AND RELATED ENTITIES FROM THE SHAREHOLDERS OF ART TECHNOLOGY GROUP, INC. FOR USE AT ITS SPECIAL MEETING WHEN AND IF THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. WHEN AND IF COMPLETED, A DEFINITIVE PROXY STATEMENT AND A FORM OF PROXY WILL BE MAILED TO SHAREHOLDERS OF ART TECHNOLOGY GROUP, INC. AND WILL BE AVAILABLE AT NO CHARGE AT THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE AT HTTP://WWW.SEC.GOV. INFORMATION RELATING TO THE POTENTIAL PARTICIPANTS IN A POTENTIAL PROXY SOLICITATION IS CONTAINED IN THE SCHEDULE 13D FILED BY MITCHELL WRIGHT TECHNOLOGY GROUP, LLC, PARCHE, LLC, STARBOARD VALUE & OPPORTUNITY FUND, LLC AND CERTAIN OF THEIR AFFILIATES WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 24, 2004 WITH RESPECT TO ART TECHNOLOGY GROUP, INC., AS AMENDED ON SEPTEMBER 10, 2004 AND SEPTEMBER 20, 2004. THAT SCHEDULE 13D IS CURRENTLY AVAILABLE AT NO CHARGE ON THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE.