Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 will.thoretz@isg-one.com Investor Contact: Michael Sherrick +203 517 3104 michael.sherrick@isg-one.com Information Services Group Announces First-Quarter 2024 Results ● Reports first-quarter GAAP revenues of $64 million ● Reports first-quarter net loss of $3.4 million, GAAP loss per share of $0.07 and adjusted net income per share of $0.01 ● Reports first-quarter adjusted EBITDA of $4 million ● Generates $2.3 million of cash from operations ● Declares ...