Former Rio Tinto CEO's Deep-Sea Mining Firm Merges With Odyssey Marine in $1 Billion Deal to Build US-Controlled Critical Minerals Platform
American Ocean Minerals Corporation and Odyssey Marine Exploration announced an all-stock merger valued at approximately $1 billion, creating one of the largest deep-sea mining companies as the US accelerates efforts to secure seabed critical minerals.
Overview
American Ocean Minerals Corporation (AOMC) and Odyssey Marine Exploration (NASDAQ: OMEX) announced on April 8, 2026, that they have entered into a definitive all-stock merger agreement to create what the companies describe as a U.S.-controlled deep-sea critical minerals platform, according to Mining.com. The combined entity, which will trade on Nasdaq under the ticker “AOMC,” carries a pro forma equity valuation of approximately $1 billion and brings together more than 500,000 square kilometers of secured and targeted seabed exploration areas across the Cook Islands and U.S.-regulated international waters.
The deal arrives as the United States accelerates permitting for deep-sea mineral extraction and as global competition intensifies for the cobalt, nickel, copper, and manganese locked inside polymetallic nodules on the ocean floor. This follows earlier reporting by The Machine Herald on the International Seabed Authority’s failure to finalize mining regulations and the growing tension between extraction ambitions and deep-ocean biodiversity concerns.
What We Know
The transaction combines AOMC, led by former Rio Tinto chief executive Tom Albanese, with Odyssey Marine Exploration, which brings more than 30 years of deep-water operational experience, as reported by Proactive Investors. Mark Justh, a capital markets veteran with experience at JPMorgan and Goldman Sachs, will serve as CEO of the combined company.
The financing structure includes more than $150 million in a private placement from institutional and strategic investors, on top of $75 million in pre-public financing that AOMC completed in February 2026, according to Mining.com. The combined company expects to hold approximately $175 million in cash at closing, which is targeted for late in the second quarter or early in the third quarter of 2026.
The merged company’s portfolio spans two of three licensed exploration areas in the Cook Islands, where indicated resources total 417 million tonnes and inferred resources exceed 2 billion tonnes, according to Proactive Investors. In U.S.-regulated waters, the company claims more than 1.4 billion tonnes of inferred resources. Target minerals include polymetallic nodules rich in nickel, cobalt, copper, and manganese, along with rare earth elements and potentially titanium from the Cook Islands licenses.
Odyssey shares surged approximately 94 percent to $1.62 on the day of the announcement, according to Benzinga. A 25-for-1 reverse stock split is planned before closing. As part of the deal, Odyssey will divest its Mexican phosphate asset, PHOSAGMEX, removing roughly $60 million in liabilities from the combined entity’s balance sheet, as reported by Benzinga.
Albanese framed the merger in terms of U.S. industrial strategy, stating that “AOMC will be positioned to be a reliable, long-term supplier for American re-industrialization” through what he described as a responsible approach to deep-sea resource development, according to Proactive Investors.
What We Don’t Know
The announcement did not specify which institutional investors participated in the $150 million private placement beyond identifying founding investor Mike Rowe. The timeline for actual mineral extraction remains unclear; the combined company is advancing toward prefeasibility and environmental studies rather than near-term production.
Environmental impact assessments for the targeted seabed areas have not been published. Deep-sea mining in the Clarion-Clipperton Zone and the Penrhyn Basin remains contentious among marine scientists, who have documented significant biodiversity in nodule fields. The regulatory pathway in U.S.-controlled waters, while accelerating under a recent executive order to fast-track offshore mining permits, has yet to produce a finalized framework. NOAA extended the public comment period for separate deep-sea mining exploration applications on April 7, 2026, underscoring the ongoing regulatory uncertainty.
How the new entity will compete with The Metals Company, which has been pursuing its own Clarion-Clipperton Zone extraction plans and has already submitted applications to NOAA, also remains an open question.
Analysis
The AOMC-Odyssey merger represents the clearest signal yet that deep-sea mining is moving from the fringes of the mining industry toward mainstream capital markets. A former chief executive of one of the world’s largest miners attaching his name and career to seabed extraction, combined with $230 million in equity financing and a Nasdaq listing, elevates the sector’s credibility with institutional investors in a way that earlier ventures have not achieved.
The strategic logic tracks closely with broader U.S. efforts to diversify critical mineral supply chains away from Chinese-dominated land-based sources. With China controlling the majority of global rare earth processing and significant shares of cobalt and nickel refining, seabed nodules offer a geopolitically appealing alternative. Whether the economics and environmental costs support that ambition at commercial scale is a question that prefeasibility studies and regulatory proceedings will need to resolve in the months ahead.