BitMine Files for $300M Preferred Stock Offering to Expand Ethereum Treasury
BitMine Immersion Technologies filed a 424B5 prospectus supplement to raise up to $300 million through Series A Perpetual Preferred Stock carrying a 9.5% cumulative dividend. The proceeds are intended to fund additional Ethereum purchases and validator infrastructure, following a capital structure modeled on Strategy's bitcoin treasury approach.
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What BitMine Filed
BitMine Immersion Technologies filed a 424B5 prospectus supplement to raise up to $300 million through Series A Perpetual Preferred Stock, according to the filing as described by The Defiant. The preferred shares carry a 9.5% cumulative dividend. Bitcoinist reported that the proceeds could be used to buy additional Ethereum and to fund validator infrastructure.
A Strategy-Style Structure Applied to Ether
The offering follows the template Michael Saylor's Strategy has used to build its bitcoin reserve, issuing preferred equity to finance purchases of the underlying asset. Both reports describe the structure as closer to Strategy's model than to a conventional corporate raise, with ETH rather than BTC as the core reserve asset. The Defiant framed it as applying Strategy's STRC capital-markets playbook to a corporate Ethereum treasury.
Balance Sheet Context
The Defiant reported that BitMine's Ethereum treasury currently carries $9.2 billion in unrealized losses. That figure is a mark-to-market position and will move with ETH's price. Bitcoinist's coverage did not cite a loss figure, so the $9.2 billion number rests on a single source at this stage. Neither report stated what share of the $300 million, if any, has been committed to new purchases versus validator operations.
What Remains Unclear
A prospectus supplement sets out maximum terms, not a completed transaction. Neither source confirmed the final amount raised, the pricing date, or the allocation of proceeds. Readers should treat the $300 million figure as a ceiling until BitMine reports the closing amount.
Why It Matters
For Traders
Watch for the final raised amount and any ETH purchase disclosures, since new buying could add demand while the $9.2 billion unrealized loss keeps balance sheet risk in focus.
For Investors
Corporate ether treasuries adopting preferred-equity funding would test whether the bitcoin treasury model transfers to a second major asset with different yield and validator economics.
For Builders
Treasury vehicles that fund validator infrastructure alongside token purchases create new staking-exposure channels that protocols and staking providers should factor into capacity planning.
This article is for information only and is not financial advice. Read the full disclaimer.
