Cogent Communications Holdings CCOI Insider Ownership

NASDAQ CCOI
$9.33 -0.31 (-3.22%)
As of: Sep 9, 2026 · 3:59 PM EDT

Insider Holdings by Owner

2.97Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
6.23%
-0.010% pp QoQ
Shares Held by Insiders
2.98Mn
filed for Sep 2026
-0.16% QoQ
Shares Outstanding
47.83Mn
47,827,343 shares
Direct Holdings
1.72Mn
Indirect: 1.26Mn
Net Shares Traded (QoQ)
-4.85K
net selling in Sep 2026
Insiders Holding Shares
19
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

Quarter ending 30 Sep, 2026

As of September 09, 2026, the three largest insider holders of CCOI are Dave Schaeffer (Chairman, Ceo, And President, 1.87Mn shares), Dave Schaeffer (Chairman, Ceo, And President, 1.87Mn shares), Dave Schaeffer (Chairman, Ceo, And President, 868.13K shares).

Form 4 Holdings

Insiders Holding CCOI

Insiders 19
Shares held 2.97Mn
Of outstanding 6.22%
# 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 62.8% 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 174,219 0 174,219 5.9% 30 Jun, 2026
5 Mark Andrew Harris Vp Chief Revenue Officer 110,168 0 110,168 3.7% 05 Jan, 2026
6 Raymond B Kummer Cto Emeritus 60,000 0 60,000 2.0% 03 Jan, 2023
7 Steven D Brooks Director 58,693 0 58,693 2.0% 30 Jun, 2026
8 James Bubeck Chief Revenue Officer 55,142 0 55,142 1.9% 05 Jun, 2025
9 Henry W Kilmer Vp Of Network Strategy 38,600 0 38,600 1.3% 15 Jun, 2026
10 Sa Paul De Director 33,792 0 33,792 1.1% 30 Jun, 2026
11 Deneen C Howell Director 32,330 0 32,330 1.1% 30 Jun, 2026
12 Sean Robert Wallace Vp, Cfo Treasurer 29,225 0 29,225 1.0% 03 Mar, 2022
13 Eve N Howard Director 27,306 0 27,306 0.9% 30 Jun, 2026
14 Lewis H Ferguson Director 24,539 0 24,539 0.8% 30 Jun, 2026
15 David Allen Kapp Vp Chief Technical Officer 22,200 0 22,200 0.7% 14 Aug, 2023
16 Greg W O'Connor Vp, Chief Operating Officer 16,000 0 16,000 0.5% 03 May, 2023
17 Carolyn Katz Director 15,750 0 15,750 0.5% 01 Oct, 2021
18 Sheryl Lynn Kennedy Director 13,690 0 13,690 0.5% 30 Jun, 2026
19 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

5,031 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
30 Jun, 2026 Lewis H Ferguson Director Acquired A 3,445 $0.00 $0 24,539 Direct
30 Jun, 2026 Eve N Howard Director Acquired A 3,445 $0.00 $0 27,306 Direct
30 Jun, 2026 Sheryl Lynn Kennedy Director Acquired A 3,445 $0.00 $0 13,690 Direct
30 Jun, 2026 Deneen C Howell Director Acquired A 3,445 $0.00 $0 32,330 Direct
30 Jun, 2026 Steven D Brooks Director Acquired A 3,445 $0.00 $0 58,693 Direct
30 Jun, 2026 Sa Paul De Director Acquired A 3,445 $0.00 $0 33,792 Direct
30 Jun, 2026 Marc Montagner Director Acquired A 3,445 $0.00 $0 99,842 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
04 May, 2026 Dave Schaeffer Chairman, Ceo, And President Acquired A 1,000,000 $0.00 $0 1,609,143 Direct
04 May, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed G 1,000,000 $0.00 $0 609,143 Direct
04 May, 2026 Dave Schaeffer Chairman, Ceo, And President Acquired G 1,000,000 $0.00 $0 1,258,990 Indirect
01 Apr, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed D 58,667 $0.00 $0 638,476 Direct
01 Apr, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed D 58,667 $0.00 $0 638,476 Direct
01 Apr, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed D 58,667 $0.00 $0 638,476 Direct
01 Apr, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed D 58,667 $0.00 $0 638,476 Direct
01 Apr, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed G 29,333 $0.00 $0 609,143 Direct
01 Apr, 2026 Dave Schaeffer Chairman, Ceo, And President Disposed G 29,333 $0.00 $0 609,143 Direct