BitMine needs 103,698 more ETH to reach its stated 5% supply target. At its Sept. 27 reference price, that would cost about $280 million, or 42% of its reported cash and marketable securities.

The company has not earmarked those funds for ETH purchases. It has already used buybacks alongside accumulation, spending roughly $85.9 million on its own shares in July while slowing ETH buying that week.