On March 17, 2020, Carlos Sielecki informed the board of directors of Osmotica Pharmaceuticals plc (the Company) that he would resign as a director, with such resignation effective immediately prior to the appointment of his successor to the Board. On March 22, 2020, the Board appointed Joachim Benes to fill the vacancy on the Board resulting from the resignation of Mr. Sielecki, with such appointment effective on March 23, 2020. Mr. Benes is not expected to receive compensation for service as a member of the Board. The Board does not currently plan to appoint Mr. Benes to any committees of the Board. Mr. Benes was nominated by Altchem Limited to serve as a member of the Board pursuant to the Shareholders’ Agreement dated October 17, 2018 among the Company, Altchem Limited, affiliates of Avista Capital Partners and the other shareholders identified therein.