Shares surged 7.5% to $19.02 Thursday after USA Rare Earth confirmed it completed its acquisition of Serra Verde Group, a Brazilian rare earth miner — the centerpiece of a strategy to build a Western supply chain that doesn't depend on China. The deal is real, the mine is producing, and Washington is backing it with billions. But existing shareholders just absorbed a massive wave of new stock, and the hard part — ramping a mine to full capacity — still lies ahead.

• The Only Heavy-Rare-Earth Mine Outside Asia Now Belongs to USAR

Serra Verde is the only scaled producer of all four magnetic and other critical heavy rare earth elements outside Asia. That matters because China accounts for about 60% of global mined production, 91% of refined output, and 94% of sintered permanent-magnet production.

The merger consideration includes 126,849,307 new USAR shares plus $300 million in cash — valuing the deal at roughly $2.8 billion. After closing, Serra Verde's former shareholders own approximately 34.1% of the combined company, leaving legacy USAR holders with about 65.9%.

• Washington Is Footing Much of the Bill — With Strings Attached

The U.S. Department of War committed $750 million to a special-purpose vehicle purchasing Serra Verde's output, backed by a $500 million bank credit line and a $300 million government forward purchase contract — totaling $1.55 billion.

A 15-year offtake agreement covering 100% of Phase I production with guaranteed price floors provides revenue visibility few mining startups enjoy. But if financing proves insufficient and the debt facility goes unfunded, Serra Verde may need alternative buyers on less favorable terms.

• The Mine Still Needs to Hit Its Numbers

The first stage is expected to reach a run-rate of approximately 4,000 tons per year of total rare earth oxide production by the end of 2026.

Construction is underway on a second stage targeting 6,400 tons per year, with commissioning expected within 12 months. These are targets, not results. Serra Verde's 2024 and 2025 audits identified two material weaknesses in internal controls — a yellow flag for investors counting on predictable execution.

• Leadership Turnover Adds Uncertainty

Serra Verde's former CEO has been named USAR president and will succeed current CEO Barbara Humpton on October 1, 2026.

Sir Mick Davis, former CEO of mining giant Xstrata, joins the board. Heavy-industry credentials are encouraging, but a CEO transition during a complex integration raises execution risk investors should watch closely.