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 *
  HANDELSMAN MICHAEL J.
 2. Date of Event Requiring Statement (Month/Day/Year)
09/01/2010		 3. Issuer Name and Ticker or Trading Symbol
LoopNet, Inc. [LOOP]
(Last)
(First)
(Middle)
C/O LOOPNET, INC., 181 W. HUNTINGTON DRIVE, SUITE 208		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP & Group General Manager
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

MONROVIA, CA 91016		 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 42,516
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)   (1) 06/05/2013 Common Stock 82,500 (1) $ 12 D  
Employee Stock Option (Right to Buy)   (2) 03/20/2014 Common Stock 15,000 $ 16.07 D  
Employee Stock Option (Right to Buy)   (3) 01/08/2015 Common Stock 10,000 $ 11.06 D  
Employee Stock Option (Right to Buy)   (4) 02/12/2016 Common Stock 35,000 $ 7.26 D  
Employee Stock Option (Right to Buy)   (5) 02/10/2017 Common Stock 25,000 $ 9.97 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
HANDELSMAN MICHAEL J.
C/O LOOPNET, INC.
181 W. HUNTINGTON DRIVE, SUITE 208
MONROVIA, CA 91016		       SVP & Group General Manager  

Signatures

/s/ Maria T. Valles, Attorney-in-Fact 09/02/2010
**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) 110,000 shares were granted on June 6, 2006 and are all vested as of the date hereof. 82,500 shares remain outstanding and exercisable as of the date hereof.
(2) Options vest 1/48th per month beginning on the date of grant, so long as the reporting person remains an employee of the Issuer. 15,000 shares were granted on March 21, 2007 of which 12,812 are vested and exercisable as of the date hereof.
(3) Options vest 1/48th per month beginning on the date of grant, so long as the reporting person remains an employee of the Issuer. 10,000 shares were granted on January 9, 2008 of which 6,458 are vested and exercisable as of the date hereof.
(4) Options vest 1/48th per month beginning on the date of grant, so long as the reporting person remains an employee of the Issuer. 45,000 shares were granted on February 13, 2009 of which 6,874 are vested and exercisable as of the date hereof.
(5) Options vest 1/48th per month beginning on the date of grant, so long as the reporting person remains an employee of the Issuer. 25,000 shares were granted on February 11, 2010 of which 3,124 are vested and exercisable as of the date hereof.
 
Remarks:
Exhibit 24.1: Power of Attorney

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