Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Federman John
 2. Date of Event Requiring Statement (Month/Day/Year)
11/29/2006		 3. Issuer Name and Ticker or Trading Symbol
ART TECHNOLOGY GROUP INC [ARTG]
(Last)
(First)
(Middle)
ONE MAIN STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP & GM of eStara
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CAMBRIDGE, MA 02142		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock (1) 366,537
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy) 10/10/2007(2) 10/10/2016 Common Stock 200,000 $ 2.05 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Federman John
ONE MAIN STREET
CAMBRIDGE, MA 02142		       SVP & GM of eStara  

Signatures

/s/ Jeffrey T. Kowalski, by power of attorney 12/11/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) 113,703 of these shares are restricted shares that vest in installments of 3,159 shares per month over 36 months. In accordance with the Agreement and Plan of Merger dated September 18, 2006 pursuant to which Art Technology Group, Inc. acquired eStara, Inc., 22,832 of these shares are being held in escrow pending any working capital adjustments, and 40,497 of these shares are being held in escrow for one year for the purpose of securing amounts that may be payable to Art Technology Group as a result of indemnification provisions in the Agreement and Plan of Merger.
(2) Options are exercisable 25% one year from grant date and 6.25% quarterly thereafter.

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