Exhibit 99.1 Contact: Michael Sabella Vice President, Investor Relations (281) 885-7589 Patterson-UTI Energy Reports Financial Results for the Quarter Ended September 30, 2024 HOUSTON, Texas – October 23, 2024 – PATTERSON-UTI ENERGY, INC. (NASDAQ: PTEN) today reported financial results for the quarter ended September 30, 2024. Third Quarter 2024 Financial Results • Total revenue of $1.4 billion • Net loss attributable to common stockholders of $979 million, or $2.50 per share ◦ Includes an $885 million good ...