Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
MITSUI & CO USA INC
  2. Issuer Name and Ticker or Trading Symbol
BOINGO WIRELESS INC [WIFI]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
200 PARK AVE, 
3. Date of Earliest Transaction (Month/Day/Year)
05/03/2011
(Street)

NEW YORK, NY 10166
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 05/03/2011   S   651,535 D $ 13.5 175,543 I MCVP Holding, Inc. (1)
Common Stock               3,348,076 D (2)  
Common Stock               2,520,998 I Corporate Development Fund of Mitsui & Co. Ltd (3)
Comnmon Stock               16,707 I Mitsui & Co. Global Investment, Inc. (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MITSUI & CO USA INC
200 PARK AVE
NEW YORK, NY 10166
    X    
MCVP Holding, Inc.
C/O BOINGO WIRELESS, INC.
10960 WILSHIRE BLVD. SUITE 800
LOS ANGELES, CA 90024
    X    
Corporate Development Fund of Mitsui & Co., Ltd.
C/O BOINGO WIRELESS, INC.
10960 WILSHIRE BLVD. SUITE 800
LOS ANGELES, CA 90024
    X    
Mitsui & Co. Global Investment, Inc.
C/O BOINGO WIRELESS, INC.
10960 WILSHIRE BLVD. SUITE 800
LOS ANGELES, CA 90024
    X    

Signatures

 /s/ Peter Hovenier as Attorney-in-fact for Mitsui & Co. (USA), Inc.   05/05/2011
**Signature of Reporting Person Date

 /s/ Peter Hovenier as Attorney-in-fact for MCVP Holding, Inc.   05/05/2011
**Signature of Reporting Person Date

 /s/ Peter Hovenier as Attorney-in-fact for Corporate Development Fund of Mitsui & Co., Ltd.   05/05/2011
**Signature of Reporting Person Date

 /s/ Peter Hovenier as Attorney-in-fact for Mitsui & Co. Global Investment, Inc.   05/05/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) The reported securities are owned directly by MCVP Holding, Inc. Mitsui & Co. (USA), Inc., Corporate Development Fund of Mitsui & Co. Ltd and Mitsui & Co. Global Investment, Inc. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.
(2) The reported securities are owned directly by Mitsui & Co. (USA), Inc. MCVP Holding, Inc., Corporate Development Fund of Mitsui & Co. Ltd and Mitsui & Co. Global Investment, Inc. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.
(3) The reported securities are owned directly by Corporate Development Fund of Mitsui & Co. Ltd. MCVP Holding, Inc., Mitsui & Co. (USA), Inc. and Mitsui & Co. Global Investment, Inc. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.
(4) The reported securities are owned directly by Mitsui & Co. Global Development, Inc. MCVP Holding, Inc., Mitsui & Co. (USA), Inc. and Corporate Development Fund of Mitsui & Co. Ltd. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.

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