Exhibit 99.1 Jacobs Reports Strong Fiscal First Quarter 2026 Results 1999 Bryan Street, Suite 3500 Dallas, Texas 75201 1.214.583.8500 Press Release FOR IMMEDIATE RELEASE February 3, 2026 DALLAS, TEXAS - Jacobs Solutions Inc. (NYSE: J) today announced its financial results for the fiscal first quarter ended December 26, 2025. Q1 2026 Highlights : 1 Strong Q1 Gross Revenue and Adj. Net Revenue Growth of 12.3% and 8.2% y/y, Respectively Jacobs' Chair and CEO Bob Pragada commented, "We delivered excellent first ...