Granahan Investment Management’s Cogent Communications CCOI Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$5.98M	Buy	317,447 +100,422	+46%	+$2.21M	0.29%	91
2025 Q4	$4.68M	Buy	217,025 +108,036	+99%	+$3.19M	0.2%	113
2025 Q3	$4.18M	Sell	108,989 -115,502	-51%	-$4.82M	0.17%	110
2025 Q2	$10.8M	Buy	224,491 +38,909	+21%	+$1.98M	0.44%	58
2025 Q1	$11.4M	Buy	185,582 +11,101	+6%	+$819K	0.57%	55
2024 Q4	$13.4M	Sell	174,481 -7,986	-4%	-$637K	0.56%	51
2024 Q3	$13.9M	Buy	182,467 +11,214	+7%	+$772K	0.54%	52
2024 Q2	$9.67M	Buy	171,253 +1,591	+0.9%	+$95K	0.39%	83
2024 Q1	$11.1M	Buy	169,662 +30,741	+22%	+$2.24M	0.39%	76
2023 Q4	$10.6M	Buy	138,921 +26,950	+24%	+$1.8M	0.35%	85
2023 Q3	$6.93M	Buy	111,971 +71,288	+175%	+$4.66M	0.25%	107
2023 Q2	$2.74M	Buy	+40,683	New	+$2.66M	0.08%	148
2018 Q4	–	Sell	-41,612	Closed	-$2.32M	–	195
2018 Q3	$2.32M	Sell	41,612 -19,498	-32%	-$1.04M	0.13%	146
2018 Q2	$3.26M	Buy	61,110 +30,732	+101%	+$1.53M	0.2%	128
2018 Q1	$1.32M	Sell	30,378 -11,623	-28%	-$510K	0.1%	164
2017 Q4	$1.9M	Sell	42,001 -14,621	-26%	-$696K	0.15%	147
2017 Q3	$2.77M	Sell	56,622 -13,417	-19%	-$594K	0.23%	121
2017 Q2	$2.81M	Buy	70,039 +10,303	+17%	+$427K	0.26%	115
2017 Q1	$2.57M	Sell	59,736 -408,353	-87%	-$17M	0.26%	115
2016 Q4	$19.4M	Buy	468,089 +3,800	+0.8%	+$145K	0.67%	59
2016 Q3	$17.1M	Buy	464,289 +94,600	+26%	+$3.65M	0.56%	71
2016 Q2	$14.8M	Buy	369,689 +67,800	+22%	+$2.66M	0.54%	71
2016 Q1	$11.8M	Sell	301,889 -93,100	-24%	-$3.23M	0.43%	88
2015 Q4	$13.7M	Sell	394,989 -122,600	-24%	-$3.96M	0.47%	77
2015 Q3	$14.1M	Buy	+517,589	New	+$15.3M	0.44%	82