CCOI
Cogent Communications Holdings, Inc.Company with tickers: CCOI
CIK
1158324
CUSIP
19239V302
Shares Outstanding
50,077,663
13F Activity (30d)
132 filings
128 filers
Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.
| Filed | Seller | Relationship | Shares | Approx. Sale | Broker |
|---|---|---|---|---|---|
| 2026-06-09 | KILMER HENRY W | Officer | 2,400 | 2026-06-09 | Charles Schwab Corp. |
| 2026-05-28 | Lewis H FERGUSON | Director | 2,800 | 2026-05-28 | Benjamin F. Edwards & Co |
| 2026-05-18 | Sheryl Lynn Kennedy | Director | 3,300 | 2026-05-14 | RBC DOMINION SECURITIES INC. |
| 2026-03-05 | Lewis H FERGUSON | Director | 2,206 | 2026-03-05 | RBC WEALTH MANAGEMENT |
| 2026-03-05 | Sheryl Lynn Kennedy | Director | 3,300 | 2026-03-05 | RBC DOMINION SECURITIES INC. |
| 2026-03-05 | KILMER HENRY W | Officer | 2,400 | 2026-03-05 | Charles Schwab Corp. |
| 2026-03-05 | THADDEUS WEED | Officer | 4,850 | 2026-03-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-11 | THADDEUS WEED | Officer | 7,300 | 2025-12-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-03 | KILMER HENRY W | Officer | 4,800 | 2025-12-03 | Charles Schwab & Co |
| 2025-12-01 | Lewis H FERGUSON | Director | 4,000 | 2025-12-01 | RBC WEALTH MANAGEMENT |
| 2025-11-12 | Sheryl Lynn Kennedy | Director | 2,400 | 2025-11-11 | RBC DOMINION SECURITIES INC. |
| 2025-09-04 | KILMER HENRY W | Officer | 2,400 | 2025-09-04 | Charles Schwab Corp. |
| 2025-09-02 | THADDEUS WEED | Officer | 4,900 | 2025-09-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-08-21 | Sheryl Lynn Kennedy | Director | 2,000 | 2025-08-21 | RBC DOMINION SECURITIES INC. |
| 2025-06-16 | SCHAEFFER DAVE | FOUNDER & CEO | 45,000 | 2025-06-16 | RBC CAPITAL MARKETS LLC |
| 2025-06-16 | David Schaeffer | Founder, CEO | 25,000 | 2025-06-16 | J.P. Morgan Securities LLC |
| 2025-06-13 | David Schaeffer | Founder, CEO | 10,000 | 2025-06-13 | J.P. Morgan Securities LLC |
| 2025-06-13 | SCHAEFFER DAVE | FOUNDER & CEO | 45,000 | 2025-06-13 | RBC CAPITAL MARKETS LLC |
| 2025-06-12 | David Schaeffer | Founder, CEO | 10,000 | 2025-06-12 | J.P. Morgan Securities LLC |
| 2025-06-12 | SCHAEFFER DAVE | FOUNDER & CEO | 45,000 | 2025-06-12 | RBC CAPITAL MARKETS LLC |
| 2025-06-11 | SCHAEFFER DAVE | FOUNDER & CEO | 45,000 | 2025-06-11 | RBC CAPITAL MARKETS LLC |
| 2025-06-11 | David Schaeffer | Founder, CEO | 10,000 | 2025-06-11 | J.P. Morgan Securities LLC |
| 2025-06-10 | SCHAEFFER DAVE | FOUNDER & CEO | 40,000 | 2025-06-10 | RBC CAPITAL MARKETS LLC |
| 2025-06-10 | David Schaeffer | Founder, CEO | 15,000 | 2025-06-10 | J.P. Morgan Securities LLC |
| 2025-06-09 | THADDEUS WEED | Officer | 4,900 | 2025-06-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-06-09 | SCHAEFFER DAVE | FOUNDER & CEO | 40,000 | 2025-06-09 | RBC CAPITAL MARKETS LLC |
| 2025-06-09 | David Schaeffer | Founder, CEO | 15,000 | 2025-06-09 | J.P. Morgan Securities LLC |
| 2025-06-06 | SCHAEFFER DAVE | FOUNDER & CEO | 50,000 | 2025-06-06 | RBC CAPITAL MARKETS LLC |
| 2025-06-06 | David Schaeffer | Founder, CEO | 30,000 | 2025-06-06 | J.P. Morgan Securities LLC |
| 2025-06-05 | David Schaeffer | Founder, CEO | 35,000 | 2025-06-05 | J.P. Morgan Securities LLC |
| 2025-06-05 | SCHAEFFER DAVE | FOUNDER & CEO | 40,000 | 2025-06-05 | RBC CAPITAL MARKETS LLC |
| 2025-06-04 | SCHAEFFER DAVE | FOUNDER & CEO | 50,000 | 2025-06-04 | RBC CAPITAL MARKETS LLC |
| 2025-06-04 | BUBECK JAMES | Officer | 2,000 | 2025-06-04 | Charles Schwab & Co |
| 2025-06-04 | David Schaeffer | Founder, CEO | 25,000 | 2025-06-04 | J.P. Morgan Securities LLC |
| 2025-06-03 | KILMER HENRY W | Officer | 2,400 | 2025-06-03 | Charles Schwab & Co. |
| 2025-06-03 | David Schaeffer | Founder, CEO | 50,000 | 2025-06-03 | J.P. Morgan Securities LLC |
| 2025-06-03 | SCHAEFFER DAVE | FOUNDER & CEO | 15,000 | 2025-06-03 | RBC CAPITAL MARKETS LLC |
| 2025-06-02 | SCHAEFFER DAVE | FOUNDER & CEO | 15,000 | 2025-06-02 | RBC CAPITAL MARKETS LLC |
| 2025-06-02 | David Schaeffer | Founder, CEO | 50,000 | 2025-06-02 | J.P. Morgan Securities LLC |
| 2025-05-30 | David Schaeffer | Founder, CEO | 25,000 | 2025-05-30 | J.P. Morgan Securities LLC |
| 2025-05-29 | David Schaeffer | Founder, CEO | 25,000 | 2025-05-29 | J.P. Morgan Securities LLC |
| 2025-05-28 | SCHAEFFER DAVE | FOUNDER & CEO | 20,000 | 2025-05-28 | RBC CAPITAL MARKETS LLC |
| 2025-05-28 | Lewis H FERGUSON | Director | 1,100 | 2025-05-27 | RBC WEALTH MANAGEMENT |
| 2025-05-27 | David Schaeffer | Founder, CEO | 20,000 | 2025-05-27 | J.P. Morgan Securities LLC |
| 2025-05-23 | David Schaeffer | Founder, CEO | 25,000 | 2025-05-22 | J.P. Morgan Securities LLC |
| 2025-05-22 | David Schaeffer | Founder, CEO | 25,000 | 2025-05-22 | J.P. Morgan Securities LLC |
| 2025-05-21 | SCHAEFFER DAVE | FOUNDER & CEO | 40,000 | 2025-05-21 | RBC CAPITAL MARKETS LLC |
| 2025-05-20 | David Schaeffer | Founder, CEO | 15,000 | 2025-05-20 | J.P. Morgan Securities LLC |
| 2025-05-16 | THADDEUS GERARD WEED | Officer | 100 | 2025-05-16 | UBS Financial Services Inc |
| 2025-05-16 | SCHAEFFER DAVE | FOUNDER & CEO | 15,000 | 2025-05-16 | RBC CAPITAL MARKETS LLC |
Showing 1–50 of 129 filings