By Katherine Hamilton

Core Laboratories shares climbed after the energy-services company gave strong fourth-quarter guidance and said new tariff measures likely won't apply to most of its revenue sources.

The stock jumped 28%, to $16.36, on Thursday. Shares are still down 7% this year.

The company said it expects fourth-quarter revenue to be $132 million to $136 million, which would be ahead of the $128.6 million analysts were projecting, according to FactSet. Earnings per share are guided to be 18 cents to 22 cents, while analysts were forecasting 19 cents.

Core Laboratories believes the tariffs under consideration won't apply to the vast majority of its service revenue and product sales, it said. Services account for more than 75% of the Houston company's total revenue and currently aren't subject to tariffs.

Product sales have made up less than a quarter of total revenue and are primarily manufactured in the U.S. Tariffs on exported goods wouldn't apply to about half of those product sales, as they are consumed in the U.S. drilling and completion markets.

While tariff headwinds are contributing to market volatility and lower commodity prices right now, longer-term crude oil demand remains intact despite tariffs, the company said.

Write to Katherine Hamilton at katherine.hamilton@wsj.com

(END) Dow Jones Newswires

October 23, 2025 12:18 ET (16:18 GMT)

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