| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director | Chief Financial Officer
3 companies
Robby Sai Kit Chang is Director at ABTC and has filed Form 4s across 3 companies. Robby Sai Kit Chang's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $2.8M at current prices.
Historically, Robby Sai Kit Chang's trades have earned a middling insider score of 67/100 across 8 rated trades. Over a 12-month horizon, 75.0% of those trades were profitable, with an average 12-month return of +9.1%.
The biggest single holding is ABTC (~$1.7M) as Director.
Robby Sai Kit Chang has 28 Form 4 filings on record from March 2018 to August 2026, across 3 companies: Director at Ur-Energy (URG), 2018–2026; Director at American Bitcoin (ABTC), 2024; Chief Financial Officer at Riot Platforms (RIOT), 2018.
The 47 reported transactions were 19 option or other derivative awards, 17 option exercises, 9 open-market sales and 1 disposition back to the company, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 9 sales worth about $1.2M.
The largest open-market sale was 213,914 shares of URG at an average $1.75 on September 25, 2025, about $375K. Twelve months later URG was down 35%.
None of the 7 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 24, 2026 | URG Ur-Energy Inc. | Director | Sale+OE | 75,588 | $1.41 | $106,503.49 | -43.9% | - | - | |
| Sep 25, 2025 | URG Ur-Energy Inc | Director | Sale+OE | 213,914 | $1.75 | $374,563.41 | -71.8% | -18.9% | -35.4% | |
| Jun 24, 2024 | URG Ur-Energy Inc | Director | Sale+OE | 73,474 | $1.38 | $101,739.45 | -50.0% | -12.4% | -23.4% | |
| Jun 21, 2024 | URG Ur-Energy Inc | Director | Sale+OE | 60,000 | $1.43 | $85,842.00 | -44.9% | -16.3% | -27.7% | |
| Jun 20, 2024 | URG Ur-Energy Inc | Director | Sale+OE | 60,100 | $1.47 | $88,623.46 | -45.0% | -18.6% | -29.7% | |
| Nov 17, 2023 | URG Ur-Energy Inc | Director | Sale+OE | 50,527 | $1.66 | $84,026.40 | -40.7% | +3.0% | -24.2% | |
| Aug 10, 2023 | URG Ur-Energy Inc | Director | Sale+OE | 55,653 | $1.14 | $63,505.64 | -46.8% | +39.1% | -8.2% | |
| Jan 30, 2023 | URG Ur-Energy Inc | Director | Sale+OE | 24,500 | $1.28 | $31,367.35 | -27.9% | -34.8% | +39.1% | |
| Jan 27, 2023 | URG Ur-Energy Inc | Director | Sale+OE | 175,500 | $1.28 | $224,534.70 | -73.5% | -29.7% | +36.7% |