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CJ

SEC Insider//CIK 0001775672

Chang John B.

CIK 00017756721 companyWASHINGTON, DC

Transactions

2

Companies

1

Filings

1

CIK

0001775672

Recent Transactions

2 trades

Award
COGENT COMMUNICATIONS HOLDINGS, INC.$CCOI
common stock
2025-12-01+2,400→ 79,247 total
Award
COGENT COMMUNICATIONS HOLDINGS, INC.$CCOI
common stock
2025-12-01+2,400→ 79,247 total

Companies

1

COGENT COMMUNICATIONS HOLDINGS, INC.
VP & CHIEF LEGAL OFFICER
$CCOI

Recent Filings

1

4
Chang John B.
Dec 2, 2025

Address

2450 N ST NW 4TH FLOOR

WASHINGTON, DC, 20037

View on SEC.gov