ADC Therapeutics launches Initial Public Offering

Morgan Stanley, BofA Securities and Cowen are acting as joint book-running managers for the offering.

The offering will be made only by means of a prospectus. Copies of the preliminary prospectus relating to the offering may be obtained from Morgan Stanley & Co. LLC, Attn: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, by telephone at (866) 718-1649 or by email at prospectus@morganstanley.com; BofA Securities, Inc., NC1-004-03-43, 200 North College Street, 3rd floor, Charlotte, NC 28255-0001, Attn: Prospectus Department, or by email at dg.prospectus_requests@bofa.com; or Cowen and Company, LLC, c/o Broadridge Financial Solutions, Attn: Prospectus Department, 1155 Long Island Avenue, Edgewood, NY 11717, by telephone at (833) 297-2926 or by email at PostSaleManualRequests@broadridge.com.

A registration statement relating to these securities has been filed with the U.S. Securities and Exchange Commission, but has not yet become effective. These securities may not be sold, nor may offers to buy be accepted, prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. Any offers, solicitations or offers to buy, or any sales of securities will be made in accordance with the registration requirements of the Securities Act of 1933, as amended. There is no intention or permission to publicly offer, solicit, sell or advertise, directly or indirectly, any securities of ADC Therapeutics SA, such as the common shares, in or into Switzerland within the meaning of the Swiss Financial Services Act ("FinSA") and these securities will not be listed or admitted to trading on the SIX Swiss Exchange or on any other regulated trading venue (exchange or multilateral trading facility) in Switzerland. Neither this document nor any other offering or marketing material relating to these securities, such as the common shares, constitutes or will constitute a prospectus pursuant to the FinSA, and neither this document nor any other offering or marketing material relating to the common shares constitutes a prospectus pursuant to the FinSA, and neither this document nor any other offering or marketing material relating to the common shares may be publicly distributed or otherwise made publicly available in Switzerland.