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 *
  SAINT FREDERICK G.
 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 - Product & Bus. Dev.
 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 61,282
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) 08/08/2014 Common Stock 75,000 $ 22.29 D  
Employee Stock Option (Right to Buy)   (2) 01/08/2015 Common Stock 37,500 $ 11.06 D  
Employee Stock Option (Right to Buy)   (3) 02/12/2016 Common Stock 45,000 $ 7.26 D  
Employee Stock Option (Right to Buy)   (4) 02/10/2017 Common Stock 37,500 $ 9.97 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
SAINT FREDERICK G.
C/O LOOPNET, INC.
181 W. HUNTINGTON DRIVE, SUITE 208
MONROVIA, CA 91016		       SVP - Product & Bus. Dev.  

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) 25% of the options vest on the one year anniversary of the grant date and 1/48th per month thereafter, so long as the reporting person remains an employee of the Issuer. 75,000 shares were granted on August 9, 2007 of which 56,249 are vested 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. 37,500 shares were granted on January 9, 2008 of which 24,218 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. 45,000 shares were granted on February 13, 2009 of which 16,874 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. 37,500 shares were granted on February 11, 2010 of which 4,687 are vested and exercisable as of the date hereof.
 
Remarks:
Exhibit 24.1: Power of Attorney

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