Robby Sai Kit Chang serves as Executive at Riot Blockchain, Inc., where they oversee executive responsibilities. Since joining the company, Robby Sai Kit Chang has executed 24 insider transactions totaling $1.1M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 24, 2025 involved selling 16,407 shares valued at $23.8K.
Robby Sai Kit Chang currently holds 84,179 shares of Riot Blockchain, Inc. (RIOT), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Robby Sai Kit Chang has been a net seller of RIOT stock. They have purchased $0 and sold $1.1M worth of shares.
Robby Sai Kit Chang's most recent insider trade was on Dec 24, 2025, when they sold 16,407 shares at $1.45 per share.
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| 16,407 |
| $1.45 |
| Discretionary |
| Sep 25, 2025 | URG | $96.3K | Option Exercise | 213,914 | $0.45 | Discretionary |
| Sep 25, 2025 | URG | $374.3K | Sale | 213,914 | $1.75 | Discretionary |
| Jun 24, 2024 | URG | $42.6K | Option Exercise | 73,474 | $0.58 | Discretionary |
| Jun 24, 2024 | URG | $101.4K | Sale | 73,474 | $1.38 | Discretionary |
| Jun 21, 2024 | URG | $85.8K | Sale | 60,000 | $1.43 | Discretionary |
| Jun 21, 2024 | URG | $34.8K | Option Exercise | 60,000 | $0.58 | Discretionary |
| Jun 20, 2024 | URG | $88.3K | Sale | 60,100 | $1.47 | Discretionary |
| Jun 20, 2024 | URG | $34.9K | Option Exercise | 60,100 | $0.58 | Discretionary |
| Nov 17, 2023 | URG | $83.9K | Sale | 50,527 | $1.66 | Discretionary |
| Nov 17, 2023 | URG | $33.3K | Option Exercise | 50,527 | $0.66 | Discretionary |
| Aug 28, 2023 | URG | $13.0K | Option Exercise | 10,206 | $1.27 | Discretionary |
| Aug 10, 2023 | URG | $63.4K | Sale | 55,653 | $1.14 | Discretionary |
| Aug 10, 2023 | URG | $38.4K | Option Exercise | 55,653 | $0.69 | Discretionary |
| Jan 30, 2023 | URG | $31.4K | Sale | 24,500 | $1.28 | Discretionary |
| Jan 30, 2023 | URG | $14.2K | Option Exercise | 24,500 | $0.58 | Discretionary |
| Jan 27, 2023 | URG | $101.8K | Option Exercise | 175,500 | $0.58 | Discretionary |
| Jan 27, 2023 | URG | $224.6K | Sale | 175,500 | $1.28 | Discretionary |
| Nov 14, 2022 | URG | $34.3K | Option Exercise | 24,851 | $1.38 | Discretionary |
| Nov 5, 2021 | URG | $42.7K | Option Exercise | 22,488 | $1.90 | Discretionary |
| Dec 14, 2020 | URG | $3.7K | Option Exercise | 5,870 | $0.63 | Discretionary |
| Aug 21, 2020 | URG | $5.6K | Option Exercise | 10,157 | $0.55 | Discretionary |
| Sep 20, 2018 | RIOT | $0 | Option Exercise | 12,000 | $N/A | Discretionary |