Exhibit 99.1 ADC Therapeutics SA 2022 Annual Report Table of Contents Letter to Shareholders 3 Business Update 5 Financial Review 59 Corporate Governance 76 Report from the Auditor on the Consolidated IFRS Financial Statements 91 Consolidated IFRS Financial Statements for the Year Ended December 31, 2022 99 Report from the Auditor on the Statutory Financial Statements of ADC Therapeutics SA 163 Statutory Financial Statements of ADC Therapeutics SA for the Year Ended December 31, 2022 168 Report from the Aud ...