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.
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 all recorded history: -2.10M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.