SELLAS Life Sciences Group, Inc.

Public companies file this within four business days when something important happens that investors should know about before the next quarterly report.

SELLAS Life Sciences Group, Inc. filed this to release information to investors under Regulation FD — usually a press release, conference presentation, or other event the company considers important. ) 7 Times Square , Suite 2503 New York , NY 10036 (Address of Principal Executive Offices) (Zip Code) Registrant’s telephone number, including area code: ( 646 ) 200-5278 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations of the registrant under any of the following provisions: ¨ Written commun…