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).
| # | 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.
| 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 |