COGENT COMM GROUP INC

CUSIP: 19239VAB0 Class: CNV

CORBYN INVESTMENT MANAGEMENT INC/MD's Holding History (CIK: 0000919538)

Note: Option positions (PUT/CALL) are excluded.

Q4 2013
Shares 5,093,000 Value ($000) $5,284 Avg Close — Range —
Q3 2013
Shares 5,282,000 Value ($000) $5,262 Avg Close — Range —
Q2 2013
Shares 5,417,000 Value ($000) $5,288 Avg Close — Range —