Cogent Communications Holdings CCOI Insider Ownership

NASDAQ CCOI

$7.85 +0.09 (+1.16%)

As of: Oct 20, 2026 · 2:53 PM EDT

Insider Holdings by Owner

2.98Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

5.43%

▲+0.033% pp QoQ

Shares Held by Insiders

2.78Mn

filed for Sep 2026

▲+0.61% QoQ

Shares Outstanding

51.22Mn

51,215,736 shares

Direct Holdings

1.52Mn

Indirect: 1.26Mn

Net Shares Traded (QoQ)

+16.87K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past year, CCOI insiders made no open-market purchases, and sold at least $995,481 of stock on the open market (54.26K shares).

Behind Cogent Communications Holdings' open-market sales in the past 12 months were 4 insiders, and no insider bought.
Thaddeus Gerard Weed (Vice President, CFO) was CCOI's largest open-market seller in the past 12 months, with $411,762 of sales (21.85K shares); the latest was on September 2, 2026.
The newest open-market trade among Cogent Communications Holdings insiders came on September 15, 2026, when Henry W. Kilmer (VP of Network Strategy) made a sale of 2.4K shares for $22,104.
In transactions other than open-market trades, Cogent Communications Holdings insiders received 1.38Mn shares in stock awards and gave away 1.26Mn shares as gifts over the past 12 months.
According to Business Quant data, insiders at Cogent Communications Holdings reported 2.78Mn shares in total in their latest Form 4 filings, up 0.61% from 2.76Mn shares at the end of Q2 2026 and up 128.60% from 1.22Mn shares at the end of Q3 2025.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 45.37% (1.26Mn shares) of Cogent Communications Holdings' insider total, with the other 54.63% (1.52Mn shares) held directly.
Holdings in Cogent Communications Holdings stock are reported by 14 insiders, the officers, directors and 10% owners who have filed a Form 4 in the past two years.
Cogent Communications Holdings' top three insider holders by shares held are Dave Schaeffer (Chairman, CEO, and President, 1.87Mn shares), Thaddeus Gerard Weed (Vice President, CFO, 193.05K shares) and John B. Chang (VP & Chief Legal Officer, 191.99K shares).
Dave Schaeffer holds 67.16% of the combined insider position in Cogent Communications Holdings.
Institutional investors held 92.31% of Cogent Communications Holdings stock at the end of Q2 2026, while the latest Form 4 filings of its insiders account for about 5.43%; other investors, including the public, hold roughly 2.26%.
In the past year, 12 insiders of Cogent Communications Holdings submitted 52 Form 4 filings reporting trades, awards or other transactions.
This summary of Cogent Communications Holdings insider activity covers Form 4 filings through September 30, 2026.

Form 4 Holdings

Insiders Holding CCOI

Insiders 18

Shares held 2.98Mn

Of outstanding 5.82%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Dave Schaeffer	Chairman, Ceo, And President	609,143	1,258,990	1,868,133	62.7%	04 May, 2026
2	Thaddeus Gerard Weed	Vice President, Cfo	193,050	0	193,050	6.5%	02 Sep, 2026
3	John B. Chang	Vp Chief Legal Officer	188,847	0	188,847	6.3%	05 Jan, 2026
4	Marc Montagner	Director Nominee	177,664	0	177,664	6.0%	30 Sep, 2026
5	Mark Andrew Harris	Vp Chief Revenue Officer	110,168	0	110,168	3.7%	05 Jan, 2026
6	Steven D Brooks	Director	62,138	0	62,138	2.1%	30 Sep, 2026
7	Raymond B Kummer	Cto Emeritus	60,000	0	60,000	2.0%	03 Jan, 2023
8	James Bubeck	Chief Revenue Officer	55,142	0	55,142	1.9%	05 Jun, 2025
9	Sa Paul De	Director	37,237	0	37,237	1.2%	30 Sep, 2026
10	Henry W Kilmer	Vp Of Network Strategy	36,200	0	36,200	1.2%	15 Sep, 2026
11	Deneen C Howell	Director	35,775	0	35,775	1.2%	30 Sep, 2026
12	Eve N Howard	Director	30,751	0	30,751	1.0%	30 Sep, 2026
13	Sean Robert Wallace	Vp, Cfo Treasurer	29,225	0	29,225	1.0%	03 Mar, 2022
14	Lewis H Ferguson	Director	27,984	0	27,984	0.9%	30 Sep, 2026
15	David Allen Kapp	Vp Chief Technical Officer	22,200	0	22,200	0.7%	14 Aug, 2023
16	Sheryl Lynn Kennedy	Director	17,135	0	17,135	0.6%	30 Sep, 2026
17	Greg W O'Connor	Vp, Chief Operating Officer	16,000	0	16,000	0.5%	03 May, 2023
18	Blake Bath	Director	12,606	0	12,606	0.4%	31 Mar, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,894 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
30 Sep, 2026	Marc Montagner	Director	Acquired A	3,445	$0.00	$0	103,287	Direct
30 Sep, 2026	Deneen C Howell	Director	Acquired A	3,445	$0.00	$0	35,775	Direct
30 Sep, 2026	Eve N Howard	Director	Acquired A	3,445	$0.00	$0	30,751	Direct
30 Sep, 2026	Lewis H Ferguson	Director	Acquired A	3,445	$0.00	$0	27,984	Direct
30 Sep, 2026	Sheryl Lynn Kennedy	Director	Acquired A	3,445	$0.00	$0	17,135	Direct
30 Sep, 2026	Sa Paul De	Director	Acquired A	3,445	$0.00	$0	37,237	Direct
30 Sep, 2026	Steven D Brooks	Director	Acquired A	3,445	$0.00	$0	62,138	Direct
15 Sep, 2026	Henry W Kilmer	Vp Of Network Strategy	Disposed S	2,400	$9.21	$22.10K	36,200	Direct
02 Sep, 2026	Thaddeus Gerard Weed	Vice President, Cfo	Disposed S	4,850	$9.37	$45.44K	193,050	Direct
30 Jun, 2026	Steven D Brooks	Director	Acquired A	3,445	$0.00	$0	58,693	Direct
30 Jun, 2026	Marc Montagner	Director	Acquired A	3,445	$0.00	$0	99,842	Direct
30 Jun, 2026	Sa Paul De	Director	Acquired A	3,445	$0.00	$0	33,792	Direct
30 Jun, 2026	Deneen C Howell	Director	Acquired A	3,445	$0.00	$0	32,330	Direct
30 Jun, 2026	Lewis H Ferguson	Director	Acquired A	3,445	$0.00	$0	24,539	Direct
30 Jun, 2026	Sheryl Lynn Kennedy	Director	Acquired A	3,445	$0.00	$0	13,690	Direct
30 Jun, 2026	Eve N Howard	Director	Acquired A	3,445	$0.00	$0	27,306	Direct
16 Jun, 2026	Thaddeus Gerard Weed	Vice President, Cfo	Disposed S	4,850	$16.79	$81.43K	197,900	Direct
15 Jun, 2026	Henry W Kilmer	Vp Of Network Strategy	Disposed S	2,400	$17.01	$40.82K	38,600	Direct
28 May, 2026	Lewis H Ferguson	Director	Disposed S	2,800	$20.36	$57.01K	21,094	Direct
14 May, 2026	Sheryl Lynn Kennedy	Director	Disposed S	3,300	$16.22	$53.52K	10,245	Direct

Showing 1 to 20 of 1,894 transactions