DLH Holdings Corp. announced the appointment of Stephen J. Zelkowicz to its board of directors, effective immediately, with an initial term expiring with the 2021 Annual Shareholder’s Meeting. With this addition, there will be eight members on the Company’s Board. Mr. Zelkowicz currently serves on the board of Summer Infant Inc., where he is chair of the Governance and Nominating Committee and a member of the Compensation Committee.