ADC Therapeutics to Participate in the Jefferies Global Healthcare Conference

ADC Therapeutics SA (NYSE: ADCT) today announced that Ameet Mallik, Chief Executive Officer, will present a company overview at the Jefferies Global Healthcare Conference on Thursday, June 6, 2024 at 11:30 a.m. ET.

A live webcast of the presentation will be available via the Events & Presentations page in the Investors section of ADC Therapeutics’ website at ir.adctherapeutics.com . A replay of the webcast will be available for approximately 30 days.

About ADC Therapeutics

ADC Therapeutics (NYSE: ADCT) is a commercial-stage global leader and pioneer in the field of antibody drug conjugates (ADCs). The Company is advancing its proprietary ADC technology to transform the treatment paradigm for patients with hematologic malignancies and solid tumors.

ADC Therapeutics’ CD19-directed ADC ZYNLONTA (loncastuximab tesirine-lpyl) received accelerated approval by the FDA and conditional approval from the European Commission for the treatment of relapsed or refractory diffuse large B-cell lymphoma after two or more lines of systemic therapy. ZYNLONTA is also in development in combination with other agents and in earlier lines of therapy. In addition to ZYNLONTA, ADC Therapeutics has multiple ADCs in ongoing clinical and preclinical development.

ADC Therapeutics is based in Lausanne (Biopôle), Switzerland, and has operations in London and New Jersey. For more information, please visit https://adctherapeutics.com/ and follow the Company on LinkedIn .

ZYNLONTA ® is a registered trademark of ADC Therapeutics SA.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. In some cases you can identify forward-looking statements by terminology such as “may”, “will”, “should”, “would”, “expect”, “intend”, “plan”, “anticipate”, “believe”, “estimate”, “predict”, “potential”, “seem”, “seek”, “future”, “continue”, or “appear” or the negative of these terms or similar expressions, although not all forward-looking statements contain these identifying words. Forward-looking statements are subject to certain risks and uncertainties that can cause actual results to differ materially from those described. Factors that may cause such differences include, but are not limited to: the success of the Company’s updated corporate strategy including operating efficiencies, capital deployment and portfolio prioritization; the Company’s ability to achieve the decrease in total operating expenses for 2024, the expected cash runway into mid-2026, the effectiveness of the new commercial go-to-market strategy, competition from new technologies, and the Company’s ability to grow ZYNLONTA ® revenue in the United States; Swedish Orphan Biovitrum AB (Sobi ® ) ability to successfully commercialize ZYNLONTA ® in the European Economic Area and market acceptance, adequate reimbursement coverage, and future revenue from the same; approval by the NMPA of the BLA for ZYNLONTA ® in China submitted by Overland ADCT BioPharma and future revenue from the same, our strategic partners’, including Mitsubishi Tanabe Pharma Corporation, ability to obtain regulatory approval for ZYNLONTA ® in foreign jurisdictions, and the timing and amount of future revenue and payments to us from such partnerships; the timing and future success from the University of Miami’s IITs in FL and MZL; the timing and results of the Company’s or its partners’ clinical trials including LOTIS 5 and 7, ADCT 601 and 602 as well as the Company’s early-stage pipeline research projects, actions by the FDA or foreign regulatory authorities with respect to the Company’s products or product candidates; projected revenue and expenses; the Company’s indebtedness, including Healthcare Royalty Management and Oaktree and Blue Owl facilities, and the restrictions imposed on the Company’s activities by such indebtedness, the ability to repay such indebtedness and the significant cash required to service such indebtedness; and the Company’s ability to obtain financial and other resources for its research, development, clinical, and commercial activities. Additional information concerning these and other factors that may cause actual results to differ materially from those anticipated in the forward-looking statements is contained in the “Risk Factors” section of the Company's Annual Report on Form 20-F and in the Company's other periodic reports and filings with the Securities and Exchange Commission. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance, achievements or prospects to be materially different from any future results, performance, achievements or prospects expressed in or implied by such forward-looking statements. The Company cautions investors not to place undue reliance on the forward-looking statements contained in this document. The Company undertakes no obligation to revise or update these forward-looking statements to reflect events or circumstances after the date of this press release, except as required by law.

CONTACTS:

Investors Marcy Graham ADC Therapeutics Marcy.Graham@adctherapeutics.com +1 650-667-6450

Media Nicole Riley ADC Therapeutics Nicole.Riley@adctherapeutics.com +1 862-926-9040