Cleanspark, Inc.
A bitcoin mining company that runs dozens of data centers across the southern and western United States, contributing computing power to a mining pool in exchange for bitcoin rewards and now expanding into AI and high-performance computing hosting. It began in 2014 as an energy-software and microgrid company — the name blends "clean" for its clean-energy roots with "spark" for power — before pivoting to bitcoin mining. Its corporate shell dates back to 1987, when it was incorporated in Nevada as SmartData Corporation.
Granted 3.38M · Sold 829.4K
Granted 2.55M · Sold 698.4K
Granted 906.2K · Sold 27.0K
Granted 123.4K · Sold 40.0K
Granted 235.6K · Sold 1.3K
Granted 182.1K · Sold 74.8K
Granted 1.12M · Sold 152.0K
Granted 118.4K · Sold 61.0K
Granted 118.4K · Sold 46.0K
Granted 49.1K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Bradford ZacharyCEO and President, Director · 21 transactions | — | 4.22Mas of Aug 2025 | 3.38M | — | 829.4K |
| Schultz S. MatthewCEO & Chairman, Director · 33 transactions | — | 3.96M | 2.55M | — | 698.4K |
| Vecchiarelli Gary AnthonyPresident, CFO · 32 transactions | — | 725.3K | 906.2K | — | 27.0K |
| McNeill LarryDirector · 8 transactions | +24.9% | 296.1K | 123.4K | — | 40.0K |
| Garrison Scott EugeneEVP, Chief Development Officer · 20 transactions | — | 199.4K | 235.6K | — | 1.3K |
| Monnig TaylorCTO, COO · 29 transactions | — | 168.6K | 182.1K | — | 74.8K |
| Wood Thomas LeighDirector · 11 transactions | — | 165.1K | 1.12M | — | 152.0K |
| Beynon Roger PaulDirector · 8 transactions | +33% | 132.9K | 118.4K | — | 61.0K |
| Cavaleri AmandaDirector · 10 transactions | +29% | 114.6K | 118.4K | — | 46.0K |
| Carson Brian JayChief Accounting Officer · 4 transactions | — | 47.3K | 49.1K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -1.93M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.