Chang John B.
VP &Chief Legal Officer | Chief Legal Officer | Director +1 more
1 company
Insider Signal Score
64
GoodTrades Analyzed
21
12M Win Rate
52.4%
Avg 3M Return
+2.3%
Avg 12M Return
+8.9%
Chang John B. serves as a VP &Chief Legal Officer at CCOI. Across recent SEC filings that breaks down to 0 buys and 29 sells. Those positions are worth an estimated $1.9M at current prices.
Historically, Chang John B.'s trades have earned a middling insider score of 64/100 across 21 rated trades. Over a 12-month horizon, 52.4% of those trades were profitable, with an average 12-month return of +8.9%.
The biggest single holding is CCOI (~$1.9M) as VP &Chief Legal Officer. The recent filings there lean toward selling, a net 28,059 shares.
Holdings by Company
CCOIDec 31, 2025
Current Shares188.8K
Value$1.87M
Net Activity-28,059
Bought: 0Sold: 28.1K
Transaction History
Showing 10 filings
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Nov 12, 2024 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 2,280 | $80.41 | $183,327.50 | -3.2% | +4.2% | -76.6% | |
| Sep 12, 2024 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 1,400 | $71.67 | $100,338.00 | -1.9% | +6.1% | -50.0% | |
| Aug 23, 2024 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 2,055 | $74.00 | $152,070.00 | -2.7% | +14.9% | -47.4% | |
| Dec 26, 2023 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 3,550 | $76.00 | $269,800.00 | -8.5% | -17.4% | -0.1% | |
| Dec 21, 2023 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 1,000 | $74.00 | $74,000.00 | -2.3% | -15.2% | +4.3% | |
| Dec 14, 2023 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 500 | $72.00 | $36,000.00 | -1.1% | -7.5% | +6.3% | |
| May 3, 2023 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 5,000 | $73.00 | $365,000.00 | -5.4% | -17.9% | -13.7% | |
| Apr 17, 2023 | CCOI Cogent Communications Holdings, Inc. | VP &Chief Legal Officer | Sell | 500 | $70.00 | $35,000.00 | -1.0% | -9.5% | -10.1% | |
| Feb 1, 2023 | CCOI Cogent Communications Holdings, Inc. | Chief Legal Officer | Sell | 2,000 | $70.00 | $140,000.00 | -4.0% | -3.2% | +7.6% | |
| Jan 26, 2023 | CCOI Cogent Communications Holdings, Inc. | Chief Legal Officer | Sell | 500 | $68.00 | $34,000.00 | -1.0% | -2.3% | +12.3% |
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