Exhibit 99.1 FOR IMMEDIATE RELEASE IHS HOLDING LIMITED REPORTS FOURTH QUARTER AND FULL YEAR 2023 FINANCIAL RESULTS CONSOLIDATED HIGHLIGHTS – FOURTH QUARTER 2023 ● Revenue of $509.8 million decreased 3.1$271.8 million year-on-year foreign exchange (“FX”) headwind largely as a result of the 75.3% devaluation of the Nigerian Naira (“NGN”) when comparing the fourth quarter, 2023 to the fourth quarter, 2022 average FX rate ● Adjusted EBITDA of $274.2 million (53.8% ...