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 *
WEI JAMES
  2. Issuer Name and Ticker or Trading Symbol
COGENT COMMUNICATIONS GROUP INC [COI]
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)
C/O WORLDVIEW TECHNOLOGY PARTNERS, 435 TASSO ST., SUITE 120
3. Date of Earliest Transaction (Month/Day/Year)
10/26/2004
(Street)

PALO ALTO, CA 94301
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

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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
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   85     (3)   (4) Common Stock 2,634,842 (2) 85 D (5)  
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   14     (3)   (4) Common Stock 433,974 (2) 14 D (6)  
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   1     (3)   (4) Common Stock 30,998 (2) 1 D (7)  
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   100     (3)   (4) Common Stock 3,099,814 (2) 100 I See footnote 8 (8)
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   100     (3)   (4) Common Stock 3,099,814 (2) 100 I See footnote 9 (9)
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   100     (3)   (4) Common Stock 3,099,814 (2) 100 I See footnote 10 (10)
Series M Participating Convertible Preferred Stock (1) 10/26/2004   J(2)   100     (3)   (4) Common Stock 3,099,814 (2) 100 I See footnote 11 (11)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WEI JAMES
C/O WORLDVIEW TECHNOLOGY PARTNERS
435 TASSO ST., SUITE 120
PALO ALTO, CA 94301
    X    
WORLDVIEW TECHNOLOGY PARTNERS IV LP
435 TASSO ST., STE. 120
PALO ALTO, CA 94301
    X    
WEINGARTEN TIM
435 TASSO STREET
SUITE 120
PALO ALTO, CA 94301
      Director and 10% Owner

Signatures

 James Wei   12/02/2004
**Signature of Reporting Person Date

 Tim Weingarten   12/02/2004
**Signature of Reporting Person Date

 Worldview Technology Partners IV, L.P., by Worldview Capital IV, L.P., its general partner, by Worldview Equity I, L.L.C., by James Wei, a Managing Member   12/02/2004
**Signature of Reporting Person Date

 Worldview Technology International IV, L.P., by Worldview Capital IV, L.P., its general partner, by Worldview Equity I, L.L.C., by James Wei, a Managing Member   12/02/2004
**Signature of Reporting Person Date

 Worldview Strategic Partners IV, L.P., by Worldview Capital IV, L.P., its general partner, by Worldview Equity I, L.L.C., by James Wei, a Managing Member   12/02/2004
**Signature of Reporting Person Date

 Worldview Equity I, L.L.C., by James Wei, a Managing Member   12/02/2004
**Signature of Reporting Person Date

 Worldview Capital IV, L.P., by Worldview Equity I, L.L.C., by James Wei, a Managing Member   12/02/2004
**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) Each share of Series M Convertible Preferred Stock , par value $.001 per share, is initially convertible into approximately 30,998.14 shares of Common Stock.
(2) Each share of Common Stock of NVA Acquisition, Inc. held by the Reporting Persons was exchanged for 1 share of Series M Participating Convertible Preferred Stock pursuant to an Agreement and Plan of Merger by and among the Issuer, Cogent Potomac, Inc. and NVA Acquisition, Inc.
(3) The Series M Participating Convertible Preferred Stock is convertible at the earlier of January 31, 2005 and the date on which the Issuer files an amendment to its Certificate of Incorporation pursuant to the Certificate of Designations of its Series M Participating Convertible Preferred Stock.
(4) The conversion feature continues indefinitely.
(5) Shares are owned directly by Worldview Technology Partners IV, L.P.
(6) Shares are owned directly by Worldview Technology International IV, L.P.
(7) Shares are owned directly by Worldview Strategic Partners IV, L.P.
(8) Worldview Capital IV, L.P., which serves as the general partner to Worldview Technology Partners IV, L.P., Worldview Technology International IV, L.P. and Worldview Strategic Partners IV, L.P., may be deemed to be an indirect beneficial owner of the reported shares but such entities, but disclaims beneficial ownership in the shares held by the joint filers, except to the extent of any indirect pecuniary interest therein.
(9) Worldview Equity I, L.L.C., which serves as the general partner to Worldview Capital IV, L.P., may be deemed to be an indirect beneficial owner of the reported shares of such entity but disclaims beneficial ownership in the shares held by the joint filers, except to the extent of any indirect pecuniary interest therein.
(10) James Wei, the Designated Filer, is a managing member of Worldview Equity I, L.L.C., and may be deemed to be the indirect beneficial owner of the reported shares but disclaims beneficial ownership in the shares held by the joint filers, except to the extent of any indirect pecuniary interest therein.
(11) Tim Weingarten is a director of the issuer and has certain voting rights in Worldview Equity I, L.L.C., and may be deemed to be an indirect beneficial owner of the reported shares but disclaims beneficial ownership in the shares held by the joint filers, except to the extent of any indirect pecuniary interest therein.
 
Remarks:
James Wei, the Designated Filer, is a Managing Member of Worldview Equity I, L.L.C., which is the general partner of Worldview Capital IV, L.P.  Tim Weingarten is a director of the Issuer and has certain voting rights in Worldview Equity I, L.L.C. Worldview Capital IV, L.P. is the general partner of Worldview Technology Partners IV, L.P., Worldview Technology International IV, L.P. and Worldview Strategic Partners IV, L.P.  Each Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of any securities (except to the extent of such Reporting Person's pecuniary interest in such securities) other than any securities reported herein as being directly owned by such reporting person, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of any securities for purposes of Section 16 or for any other purpose.

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