Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| COGENT COMMUNICATIONS HOLDINGS, INC.CCOI · Entity 1298 | VP & CHIEF LEGAL OFFICER | December 31, 2025 | January 05, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
COGENT COMMUNICATIONS HOLDINGS, INC.
Report date December 31, 2025 · Filed January 05, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| common stockSEC Table I · non-derivative | Direct | 188,847 |
Ending reported balance
After 2025-12-31 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2025-12-31 · Grant · Acquired 9,600 · Balance 88,847 F1: The award of restricted stock shall vest in one third of the grant on January 1 of each of 2027, 2028 and 2029. Row 2 · 2025-12-31 · Grant · Acquired 100,000 · Balance 188,847 F2: The award shall vest effective January 1, 2029, based on Mr. Chang's continued employment to that date. |
| common stockSEC Table I · non-derivative | IndirectBy minor children | 1,870 |
Reported balance
Holding disclosure · report date 2025-12-31 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 1,870 |
Filing footnotes · ownership attribution and instrument terms
F1: The award of restricted stock shall vest in one third of the grant on January 1 of each of 2027, 2028 and 2029.
F2: The award shall vest effective January 1, 2029, based on Mr. Chang's continued employment to that date.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| April 05, 2021 Filed Apr 6, 2021 15:13 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 558 | $70.00 | $39,060.00 |
DisclosureSEC source: 0001567619-21-007664 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 33,776 F1 · shares: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
| March 15, 2021 Filed Mar 16, 2021 13:23 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 558 | $65.00 | $36,270.00 |
DisclosureSEC source: 0001567619-21-006366 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 34,334 F1 · shares: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1). Read SEC document |
| February 24, 2021 Filed Feb 25, 2021 22:23 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Grantcommon stock | 9,600 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-21-004949 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 34,892 F1 · shares: These shares of restricted stock will vest in four equal quarterly installments starting on March 1, 2024. Read SEC document |
| January 04, 2021 Filed Jan 5, 2021 18:19 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 558 | $60.00 | $33,480.00 |
DisclosureSEC source: 0001567619-21-000180 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,292 F1 · shares: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1). Read SEC document |
| September 01, 2020 Filed Sep 2, 2020 00:39 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 150 | $67.53 | $10,129.11 |
DisclosureSEC source: 0001567619-20-016260 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,850 F1 · date: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
| July 31, 2020 Filed Jul 31, 2020 20:52 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 500 | $90.00 | $45,000.00 |
DisclosureSEC source: 0001567619-20-013989 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 26,000 F1 · date: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
| July 21, 2020 Filed Jul 22, 2020 15:42 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 500 | $85.00 | $42,500.00 |
DisclosureSEC source: 0001567619-20-013565 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 26,500 F1 · date: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
| March 03, 2020 Filed Mar 4, 2020 21:14 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 600 | $81.39 | $48,834.60 |
DisclosureSEC source: 0001567619-20-005598 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,000 F1 · date: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
| March 02, 2020 Filed Mar 3, 2020 16:38 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 300 | $76.66 | $22,997.46 |
DisclosureSEC source: 0001567619-20-005401 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,600 F1 · date: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
| February 14, 2020 Filed Feb 18, 2020 20:13 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Grantcommon stock | 9,600 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-004162 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,900 F1 · shares: These shares of restricted stock will vest in four equal quarterly installments starting on March 1, 2023. Read SEC document |
| January 02, 2020 Filed Jan 3, 2020 13:41 UTC | COGENT COMMUNICATIONS HOLDINGS, INC. CCOI · Entity 1298 | Salecommon stock | 534 | $65.46 | $34,957.35 |
DisclosureSEC source: 0001567619-20-000171 · doc1.xml · nonDerivative · entry 1 Chang John B. · CIK 0001775672 · VP & Chief Legal Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,300 F1 · date: The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1 plan) Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.