Exhibit 99.1 Contact: Michael Sabella Vice President, Investor Relations (281) 885-7589 Patterson-UTI Energy Reports Financial Results for the Quarter Ended March 31, 2024 HOUSTON, Texas – May 1, 2024 – PATTERSON-UTI ENERGY, INC. (NASDAQ: PTEN) today reported financial results for the quarter ended March 31, 2024. First Quarter 2024 Financial Results and Other Key Items • Total revenue of $1.5 billion • Net income attributable to common stockholders of $51 million, or $0.13 per share ◦ Includes $12 million ...