Bain Capital Venture Investors, LLC – ‘13F-HR’ for 3/31/13

On:  Wednesday, 5/15/13, at 1:36pm ET   ·   Effective:  5/15/13   ·   For:  3/31/13   ·   Accession #:  1193125-13-221827   ·   File #:  28-13588

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Quarterly Holdings and Combination Report by a Money Manager   —   Form 13F
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 13F-HR      Quarterly Holdings and Combination Report by a         3      8K 
                Money Manager                                                    

13F-HR
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================================================================================
UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.
Form 13F

Form 13F COVER PAGE 

Report for the Calendar Year or Quarter Ended: March 31, 2013                   

Check here if Amendment [ ]; Amendment Number:                                  
This Amendment (Check only one.): [ ] is a restatement.               
                            [ ] adds new holdings entries.

Institutional Investment Manager Filing this Report:                            

Name:      Bain Capital Venture Investors, LLC*                                 
Address:   John Hancock Tower                                                   
200 Clarendon Street                                      
Boston, Massachusetts 02116                               

Form 13F File Number: 28-13588                                                  

The institutional investment manager filing this report and the person by whom  
it is signed hereby represent that the person signing the report is authorized  
to submit it, that all information contained herein is true, correct and        
complete, and that it is understood that all required items, statements,        
schedules, lists, and tables, are considered integral parts of this form.       

Person Signing this Report on Behalf of Reporting Manager:                      

Name:     Michael Krupka                                                        
Title:    Managing Director                                                     
Phone:    (617) 516-2000                                                        

Signature, Place, and Date of Signing:                                          

/s/ Michael Krupka             Boston, MA                05/15/2013     
---------------------------  -----------------------  ------------------------- 
[Signature]                [City, State]                [Date]    

* Michael Krupka is the Managing Director of Bain Capital Venture Investors,    
LLC, which is the administrative member of Bain Capital Venture Integral        
Investors, LLC.                                                                 

Report Type (Check only one.):                                                  

[X]  13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager 
are reported in this report.)                                         

[ ]  13F NOTICE. (Check here if no holdings reported are in this report, and    
all holdings are reported by other reporting manager(s).)             

[ ]  13F COMBINATION REPORT. (Check here if a portion of the holdings for       
this reporting manager are reported in this report and a portion are  
reported by other reporting manager(s).)                              

================================================================================

13F-HR
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 Form 13F SUMMARY PAGE

Report Summary:                                                                 

Number of Other Included Managers:                 1                            
                       -------
Form 13F Information Table Entry Total:            2                            
                       -------
Form 13F Information Table Value Total:          8,975                          
                       -------
                       (thousands)

List of Other Included Managers:                                                

Provide a numbered list of the name(s) and Form 13F file number(s) of all       
institutional investment managers with respect to which this report is filed,   
other than the manager filing this report.                                      

No.   Form 13F File Number                Name                                  

1     28-13589               Bain Capital Venture Integral Investors, LLC       

13F-HR
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                 BAIN CAPITAL VENTURE INVESTORS, LLC
                FORM 13F INFORMATION TABLE AS OF 3/31/2013

                                                        [Enlarge/Download Table]

                                                                                                                  VOTING          
                                                                                                                  AUTHORITY       
                                                                         VALUE    OTHER     INVESTMENT   -------------------------
NAME OF ISSUER                TITLE OF CLASS     CUSIP       SHARES    (x$1000)  MANAGERS   DISCRETION    SOLE     SHARED   NONE  
----------------------------  --------------  -----------  ----------  -------- ---------- ------------  -----    -------  -------
                                                                                                                                  
NANOSPHERE INC                COM               63009F105    1,791,601    3,924                 Sole        X                     
VONAGE HLDGS CORP             COM               92886T201    1,747,634    5,051                 Sole        X                     

Dates Referenced Herein

				Referenced-On Page
This ‘13F-HR’ Filing		Date		First		Last			Other Filings
Filed on / Effective on:		5/15/13							None on these Dates
For Period end:		3/31/13		1
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