CleanSpark Inc. (CLSK) delivered first-quarter results Thursday that underwhelmed Wall Street, even as management emphasized the company's financial strength and strategic expansion into AI infrastructure.

Revenue and Earnings Fall Short

The Bitcoin miner reported first-quarter revenue of $181.18 million, falling short of the $195.54 million analysts were expecting. Still, revenue climbed 11.6% compared to the same period last year.

The earnings picture looked rougher. CleanSpark posted a loss of $1.35 per share, significantly worse than the 15-cent loss analysts had penciled in. Adjusted EBITDA swung from positive $321.6 million a year ago to a loss of $295.4 million this quarter.

But here's the twist: the company ended the quarter sitting on $458.1 million in cash and $1 billion worth of Bitcoin (BTC) as of December 31, 2025. That's a pretty solid cushion for a company in growth mode.

Betting Big on AI Infrastructure

"CleanSpark exited the quarter with one of the strongest balance sheets in our sector and a power and land portfolio that is increasingly scarce," said CEO and Chairman Matt Schultz. "We strengthened our financial foundation, secured up to 890 megawatts of high-quality utility potential capacity in the Houston region, and materially advanced our Sandersville site with the acquisition of an additional 122-acre parcel as we progress toward AI tenancy."

Schultz framed the strategy as redeploying cash flows from Bitcoin mining into what he called "long-duration infrastructure opportunities" that could create shareholder value down the road. Translation: they're using mining profits to build out capacity they hope to lease to AI companies hungry for power.

Management planned to discuss the results further during an earnings call at 4:30 p.m. ET.

Market Reaction

Investors weren't impressed. CleanSpark shares tumbled 9.26% in after-hours trading to $7.50, hovering uncomfortably close to the stock's 52-week low of $6.46. That's a far cry from the $23.61 high the stock hit over the past year.