Crypto miner Sphere 3D said it could face approximately $2.2 million in supplemental US tariffs under Section 301, before interest, on Bitcoin miners purchased in 2022 by a subsidiary it now owns. US Customs and Border Protection (CBP), the US customs authority, treated the equipment as Chinese-origin goods, while seller-provided import documents included certificates stating the miners were not of Chinese origin. Sphere 3D called the allegation meritless and said it plans to protest, but the potential amount payable and any statutory interest remain uncertain. The exposure was about 77% of the company's more than $2.8 million cash balance and roughly 11 times its $0.2 million working capital as of June 30, after its combination with Cathedra Bitcoin. The company also held 20.5 BTC valued at nearly $1.2 million, later received $1.7 million through its at-the-market equity program, and had capacity under a later prospectus to sell up to $10.3 million of shares. Recurring losses and negative operating cash flow have raised substantial doubt about its ability to continue without additional funding. Sphere 3D is also pursuing a name change to DarkHorse Technologies and a ticker change to DRK, both of which remain pending, as the company considers a strategic shift whose details have not been disclosed.