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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001193125-13-058979
Filing Date
2013-02-14
Accepted
2013-02-14 12:56:49
Documents
1

Document Format Files

Seq Description Document Type Size
1 SC 13G/A d485153dsc13ga.htm SC 13G/A 42129
  Complete submission text file 0001193125-13-058979.txt   43283
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.: 13609839
SIC: 7372 Services-Prepackaged Software

Mailing Address
Business Address 99 SUMMER STREET BOSTON MA 02110
FRONTIER CAPITAL MANAGEMENT CO LLC (Filed by) CIK: 0001216488 (see all company filings)

IRS No.: 043492668 | State of Incorp.: DE
Type: SC 13G/A