COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

Capital Research Global Investors's Holding History (CIK: 0001422848)

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

Q3 2014

Shares 237,000 Value ($000) $7,966 Avg Close $19.66 Range $18.35 - $21.27

Q2 2014

Shares 792,300 Value ($000) $27,374 Avg Close $20.24 Range $18.87 - $21.66

Q1 2014

Shares 792,300 Value ($000) $28,150 Avg Close $22.15 Range $17.84 - $24.59

Q4 2013

Shares 723,700 Value ($000) $29,245 Avg Close $20.46 Range $17.72 - $23.32

Q3 2013

Shares 723,700 Value ($000) $23,339 Avg Close $17.12 Range $15.63 - $18.44

Q2 2013

Shares 723,700 Value ($000) $20,372 Avg Close $15.51 Range $14.03 - $16.52

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2014	237,000	$7,966	$19.66	$18.35 - $21.27
Q2 2014	792,300	$27,374	$20.24	$18.87 - $21.66
Q1 2014	792,300	$28,150	$22.15	$17.84 - $24.59
Q4 2013	723,700	$29,245	$20.46	$17.72 - $23.32
Q3 2013	723,700	$23,339	$17.12	$15.63 - $18.44
Q2 2013	723,700	$20,372	$15.51	$14.03 - $16.52