Bitmine Immersion Technologies (NYSE: BMNR) announced plans Wednesday to raise $300 million through a new 9.50% Series A Perpetual Preferred Stock offering, its latest capital markets move to expand the world’s largest corporate ethereum treasury. The said it company filed a preliminary prospectus supplement with the SEC on June 3, 2026, pricing 3,000,000 shares at $100 stated amount per share. If completed, the offering would trade on the New York Stock Exchange under the ticker symbol BMNP, with trading expected to begin within 30 days of issuance.