Exhibit 99.1 FOR IMMEDIATE RELEASE: Mastech Digital Reports Sequential Revenue Growth for the First Time since the Third Quarter of 2022 The IT Staffing Services Segment Increases its Billable Consultant Base by 6% during the Quarter PITTSBURGH, PA – May 8, 2024—Mastech Digital, Inc. (NYSE American: MHH), a leading provider of Digital Transformation IT Services, announced today its financial results for the first quarter ended March 31, 2024. First Quarter 2024 Highlights: • Total consolidated revenues decl ...