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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0000908733-09-000290
Filing Date
2009-03-09
Accepted
2009-03-09 09:56:55
Documents
1

Document Format Files

Seq Description Document Type Size
1 COGENT COMMUNICATIONS 13GA3 cogentcommunications.htm SC 13G/A 44481
  Complete submission text file 0000908733-09-000290.txt   46525
Mailing Address 227 W MONROE ST STE 3000 CHICAGO IL 60606
Business Address 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 3126349231
COLUMBIA WANGER ASSET MANAGEMENT LP (Filed by) CIK: 0000908733 (see all company filings)

IRS No.: 363820584 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

Mailing Address
Business Address 1015 31ST STREET WASHINGTON DC 20007 2022954200
COGENT COMMUNICATIONS GROUP INC (Subject) CIK: 0001158324 (see all company filings)

IRS No.: 522337274 | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-78106 | Film No.: 09664978
SIC: 7372 Services-Prepackaged Software