CCOI insider transaction filings
COGENT COMMUNICATIONS HOLDINGS, INC. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-15. Screen CCOI transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 9 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 2 legs across 2 filings by 2 insiders — 7,250 shares, $67,549 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 7.
- Largest priced transaction: sale of 4,850 shares @ $9.37 ($45,445) by WEED THADDEUS GERARD, filed 2026-09-03.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| WEED THADDEUS GERARD — VICE PRESIDENT, CFO | 1 | — | 1 leg · 4,850 sh · $45,445 | — |
| KILMER HENRY W — VP OF NETWORK STRATEGY | 1 | — | 1 leg · 2,400 sh · $22,104 | — |
| BROOKS STEVEN D — Director | 1 | — | — | 1 |
| FERGUSON Lewis H — Director | 1 | — | — | 1 |
| Howard Eve N — Director | 1 | — | — | 1 |
| Howell Deneen C — Director | 1 | — | — | 1 |
| Kennedy Sheryl Lynn — Director | 1 | — | — | 1 |
| Montagner Marc — Director | 1 | — | — | 1 |
| de Sa Paul — Director | 1 | — | — | 1 |
Recent Form 4 filings — COGENT COMMUNICATIONS HOLDINGS, INC.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-15 | 4 | KILMER HENRY W — VP OF NETWORK STRATEGY | Sale (S): 2,400 @ $9.21 | EDGAR |
| 2026-09-03 | 4 | WEED THADDEUS GERARD — VICE PRESIDENT, CFO | Sale (S): 4,850 @ $9.37 | EDGAR |
| 2026-07-01 | 4 | Howard Eve N — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-07-01 | 4 | Howell Deneen C — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-07-01 | 4 | de Sa Paul — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-07-01 | 4 | BROOKS STEVEN D — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-06-30 | 4 | Kennedy Sheryl Lynn — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-06-30 | 4 | Montagner Marc — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-06-30 | 4 | FERGUSON Lewis H — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-06-16 | 4 | WEED THADDEUS GERARD — VICE PRESIDENT, CFO | Sale (S): 4,850 @ $16.79 | EDGAR |
| 2026-06-15 | 4 | KILMER HENRY W — VP OF NETWORK STRATEGY | Sale (S): 2,400 @ $17.01 | EDGAR |
| 2026-05-28 | 4 | FERGUSON Lewis H — Director | Sale (S): 2,800 @ $20.36 | EDGAR |
| 2026-05-18 | 4 | Kennedy Sheryl Lynn — Director | Sale (S): 3,300 @ $16.22 | EDGAR |
| 2026-05-04 | 4 | SCHAEFFER DAVE — CHAIRMAN, CEO, AND PRESIDENT, Director | Grant/award (A): 1,000,000 @ $0 · Gift (G): 1,000,000 @ $0 · Gift (G): 1,000,000 @ $0 | EDGAR |
| 2026-04-02 | 4 | SCHAEFFER DAVE — CHAIRMAN, CEO, AND PRESIDENT, Director | Disposition to issuer (D): 58,667 @ $0 · Gift (G): 29,333 @ $0 · Gift (G): 29,333 @ $0 | EDGAR |
| 2026-03-31 | 4 | Howard Eve N — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-31 | 4 | Howell Deneen C — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-31 | 4 | de Sa Paul — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-31 | 4 | Kennedy Sheryl Lynn — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-31 | 4 | Montagner Marc — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-31 | 4 | FERGUSON Lewis H — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-31 | 4 | BROOKS STEVEN D — Director | Grant/award (A): 3,445 @ $0 | EDGAR |
| 2026-03-09 | 4 | KILMER HENRY W — VP OF NETWORK STRATEGY | Sale (S): 2,400 @ $23.35 | EDGAR |
| 2026-03-05 | 4 | Kennedy Sheryl Lynn — Director | Sale (S): 3,300 @ $22.99 | EDGAR |
| 2026-03-05 | 4 | FERGUSON Lewis H — Director | Sale (S): 2,206 @ $23.03 | EDGAR |
| 2026-03-05 | 4 | WEED THADDEUS GERARD — VICE PRESIDENT, CFO | Sale (S): 4,850 @ $22.63 | EDGAR |
| 2026-01-05 | 4 | Harris Mark Andrew — VP & Chief Revenue Officer | Grant/award (A): 5,000 @ $0 · Grant/award (A): 100,000 @ $0 | EDGAR |
| 2026-01-05 | 4 | Howard Eve N — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | Howell Deneen C — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | de Sa Paul — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | Kennedy Sheryl Lynn — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | Chang John B. — VP & CHIEF LEGAL OFFICER | Grant/award (A): 9,600 @ $0 · Grant/award (A): 100,000 @ $0 | EDGAR |
| 2026-01-05 | 4 | KILMER HENRY W — VP OF NETWORK STRATEGY | Grant/award (A): 9,600 @ $0 | EDGAR |
| 2026-01-05 | 4 | Montagner Marc — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | FERGUSON Lewis H — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | BROOKS STEVEN D — Director | Grant/award (A): 3,388 @ $0 | EDGAR |
| 2026-01-05 | 4 | WEED THADDEUS GERARD — VICE PRESIDENT, CFO | Grant/award (A): 19,400 @ $0 · Grant/award (A): 100,000 @ $0 | EDGAR |
| 2026-01-05 | 4 | SCHAEFFER DAVE — CHAIRMAN, CEO, AND PRESIDENT, Director | Grant/award (A): 229,657 @ $0 · Gift (G): 229,657 @ $0 · Gift (G): 229,657 @ $0 | EDGAR |
| 2025-12-12 | 4 | WEED THADDEUS GERARD — VICE PRESIDENT, CFO | Sale (S): 7,300 @ $23.99 | EDGAR |
| 2025-12-08 | 4 | KILMER HENRY W — VP OF NETWORK STRATEGY | Sale (S): 4,800 @ $19.79 | EDGAR |
| 2025-12-03 | 4 | WEED THADDEUS GERARD — VICE PRESIDENT, CFO | Grant/award (A): 2,400 @ $0 | EDGAR |
| 2025-12-02 | 4 | Chang John B. — VP & CHIEF LEGAL OFFICER | Grant/award (A): 2,400 @ $0 | EDGAR |
| 2025-12-02 | 4 | KILMER HENRY W — VP OF NETWORK STRATEGY | Sale (S): 2,400 @ $0 | EDGAR |
| 2025-12-02 | 4 | FERGUSON Lewis H — Director | Sale (S): 4,000 @ $20.34 | EDGAR |
| 2025-11-12 | 4 | Kennedy Sheryl Lynn — Director | Sale (S): 2,400 @ $21.34 | EDGAR |
| 2025-10-02 | 4 | de Sa Paul — Director | Grant/award (A): 2,395 @ $0 | EDGAR |
| 2025-10-02 | 4 | FERGUSON Lewis H — Director | Grant/award (A): 2,395 @ $0 | EDGAR |
| 2025-10-01 | 4 | Kennedy Sheryl Lynn — Director | Grant/award (A): 2,395 @ $0 | EDGAR |
| 2025-10-01 | 4 | Montagner Marc — Director | Grant/award (A): 2,395 @ $0 | EDGAR |
| 2025-10-01 | 4 | BROOKS STEVEN D — Director | Grant/award (A): 2,395 @ $0 | EDGAR |
Recent 8-K events — COGENT COMMUNICATIONS HOLDINGS, INC.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-29 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-15 | 8-K | 1.01 — Entry into a Material Definitive Agreement 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-26 | 8-K | 1.01 — Entry into a Material Definitive Agreement 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-04 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-04 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-20 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-07 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-17 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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