Frederick G. Wasserman
Chairman of the Board of Directors
Frederick Wasserman joined the Board of Directors in January 2007 and was appointed as Chairman in July 2009. He has been President of FGW Partners, LLC, a financial management consulting firm since 2008. Mr. Wasserman was previously the Chief Operating/Financial Officer for Mitchell & Ness Nostalgia Co., a privately-held manufacturer and distributor of licensed sportswear and authentic team apparel. He also previously served as the President and Chief Financial Officer of Goebel of North America, a U.S. subsidiary of the German specialty gift maker. Mr. Wasserman started his career in the public accounting profession and served a Certified Public Accountant after receiving a Bachelor of Science degree in Economics from the University of Pennsylvania’s Wharton School. He also currently serves on the Board of Directors for MAM Software Group, Inc.; Tapimmune, Inc., and SMTC Corp., and has previously served on the boards of Allied Defense Group, Inc., Acme Communications, Inc., Crown Crafts, Inc., Gilman + Ciocia, Inc., Breeze Eastern Corporation and National Holdings Company.
Chairman of the Board
Martin J. Delaney
Martin J. Delaney joined the Board of Directors in July 1998. Mr. Delaney is an attorney and a prominent healthcare executive who began his hospital management career in 1971 as an Assistant Administrator at Nassau County Medical Center. He has been a director of a large regional Health Maintenance Organization on Long Island, the Hospital Association of New York State, the Greater New York Hospital Association, and chairman of the Nassau-Suffolk Hospital Council. He has been President, CEO and a director of Winthrop University Hospital, Winthrop South Nassau University Health Care Systems, and the Long Island Health Network. He has a graduate degree in health care management from The George Washington University and a law degree from St. John’s University. He has been admitted to practice in New York State and federal courts.
Elder Granger, MD
Dr. Elder Granger was elected to our Board of Directors in November 2014 after serving as a strategic advisor to DLH since 2011. Dr. Granger is a U.S. Army Major General (retired) and the President and Chief Executive Officer of The 5Ps LLC, a healthcare, education, and leadership consultancy. Dr. Granger served in the U.S. Army for over 35 years and was the Deputy Director and Program Executive Officer of the TRICARE Management Activity, Office of the Assistant Secretary of Defense (Health Affairs). Dr. Granger led the largest US and multi-national battlefield health system in our recent history while serving as Commander, Task Force 44th Medical Command and Command Surgeon for the Multinational Corps Iraq. Dr. Granger received a B.S. Degree from Arkansas State University and earned his medical degree from University of Arkansas School of Medicine. He was awarded the Henry Kaiser Medical Fellowship for Medical Excellence and Leadership and is board certified by the American College of Physician Executives, American Board of Medical Quality and American Board of Internal Medicine among numerous other medical certifications. Additionally, Dr. Granger is certified in Cybersecurity Oversight from Carnegie Mellon University and has served as an advisor and member on the boards of several privately-held companies.
Frances M. Murphy, MD
Dr. Frances M. Murphy was elected to our Board of Directors in February 2016. Dr. Murphy has been the CEO of the woman-owned and veteran-owned Sigma Health Consulting, LLC since 2010. Dr. Murphy is a health care executive with extensive experience in managing, operating, and transforming large health care organizations. Her areas of expertise include health information technology; leadership development; healthcare management; neuroscience and mental health; women’s health; quality and safety; study design and research management; and veterans’ and military health. She is a board-certified neurologist and has extensive leadership experience in public and private sector healthcare organizations. Dr. Murphy is a U.S. Air Force Veteran and retired from the Department of Veterans Affairs in 2007 after a 20-year career working in medical centers and at the VA Central Office. She has served as the Deputy Under Secretary for Health (DUSH) for Health Policy Coordination and as the Principal DUSH. She has served on several nonprofit Boards including Trustee for Noblis Inc, Inc. from 2008-2015. Dr. Murphy received a MD from Georgetown University School of Medicine, a M.P.H., from the Uniformed Services University of Health Sciences, and a B.S., Biology, from the Nazareth College of Rochester.
Zachary Parker
President, CEO, and Board Director

Zachary “Zach” Parker has served as DLH’s president, chief executive officer, and board director since 2010. Mr. Parker has spearheaded three strategic acquisitions during his tenure, expanding DLH’s service portfolio to include a broader range of technology-enabled Federal services and public health capabilities through the integration of Danya International, Inc. in 2016, Social & Scientific Systems, Inc. in 2019, and Irving Burton Associates, LLC in 2020.

Prior to joining DLH, Mr. Parker held leadership roles within Northrop Grumman Corporation, VT Group, GE Government Services (now Lockheed Martin), and VSE Corporation. He has served on the boards of various joint ventures, companies, and associations. He is active in both professional and community associations, having served as co-chair of the Department of Defense/Industry Partnership Executive Council, and as a committee leader with National Defense Industry Association and the American Society of Naval Engineers. He is an active member of the Washington, D.C.-based Professional Services Council, the Government Affairs Council, and the Veteran Affairs Task Force. He has implemented initiatives with both the House and Senate Armed Services Committee. In 2002, Mr. Parker received the honor of congressional “Business Man of the Year.” In 2007, 100 Black Men of Atlanta, Inc., inducted him into the organization. He remains active in various “Hope for the Warrior” mentoring programs.

Mr. Parker earned his bachelor’s degree, with honors, in Behavioral Sciences from California State University Northridge in 1979, specializing in Human Factors Engineering with a minor in Statistics. He has completed post-graduate studies. Mr. Parker and his wife, Jackie, reside in Atlanta, Georgia, and have six children.

Austin Yerks
Austin J. Yerks, III was elected to our Board of Directors in November 2012. Mr. Yerks is the founding President of AJY III Government Strategies LLC, a consultancy focused on supporting strategic alliances between commercial firms and Federal agencies. Mr. Yerks has served as a senior executive in the federal marketplace for over 30 years and has held senior leadership positions with Computer Sciences Corporation (CSC), serving as the President of their North American Public Sector—Defense and Intelligence Group and as the President of their Federal Business Development organization. Before joining CSC, Mr. Yerks held senior management and marketing positions with other prominent defense companies. Mr. Yerks served as a director of NCI, Inc., is a member of the board of directors for the National Defense Industrial Association, and serves on other trade associations that support the government services market. He also served 10 years in the United States Army. Mr. Yerks holds a Master’s degree in Business Administration from the University of Miami and a Bachelor of Science degree from the United States Military Academy at West Point.
Stephen J. Zelkowicz
Stephen J. Zelkowicz was elected to our Board of Directors in July 2020. Mr. Zelkowicz brings strong analytical skills and extensive experience within the capital markets industry, having served as an equity research analyst at Wynnefield Capital, Inc., an investment firm specializing in small, publicly-traded companies, since 1999. He 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. Mr. Zelkowicz holds a B.A. from the University of Pennsylvania and an M.B.A. from Columbia University.
Judith J. Bjornaas
Judith L. Bjornaas was elected to our Board of Directors in March 2023. Ms. Bjornaas is a senior finance and accounting executive with over thirty years of experience in government and commercial information technology businesses at high levels of responsibility. Since November 2016, Ms. Bjornaas has served as the Executive Vice President and Chief Financial Officer of ManTech International Corporation, a provider of mission-focused technology solutions and services for U.S. federal government agencies, which was a public company until its acquisition by The Carlyle Group in September 2022. Ms. Bjornaas joined ManTech in December 2010 as Deputy Chief Financial Officer and was appointed Chief Financial Officer in November 2016. Prior to joining ManTech, she was the chief financial officer of NCI, Inc., which was a public company that provided information technology and professional services and solutions to federal government agencies. Ms. Bjornaas holds multiple professional certifications and other memberships, including having served on the Board of Directors and Executive Committee of the Northern Virginia Chamber of Commerce, and is a past member of the Association for Corporate Growth and Women in Technology. Ms. Bjornaas received a Master in Business Administration from Marymount University and graduated with a Bachelor of Science in Business Administration from Mankato State University.
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