Executive Profiles

Mark Fuller, CEO and President of Castellum

Mark Fuller,

CEO and President,


Mark Fuller, CEO and President of Castellum

Mark Fuller is the CEO and president of Castellum, a technology company executing strategic acquisitions in the cybersecurity, information technology, information warfare and electronic warfare space.

He joined the company in June 2019, bringing years of experience in public and private companies, large corporations and start-up ventures with businesses in various industries including telecommunications, internet, software, cybersecurity and energy management.

Fuller, a Potomac Officers Club member, moved to Castellum from MFSI Government Group, where he served as vice president of the National Capital Region and strategic initiatives, according to his LinkedIn profile.

The executive is also the president of Trophy Point Ventures, which provides management consulting and advisory services related to operational improvements, capital formation planning and growth options. He has served the company since March 2015.

Fuller’s four-decade career includes time spent as CEO of Techshot Lighting, now known as BATLite Lighting; as president, chief operating officer and financial officer at Hathaway Renewable Energy; and as CEO of government services at cybersecurity product and engineering services provider WidePoint.

Prior to entering the private sector, he served in the U.S. Army for 10 years, during which he held various command and staff positions.

Fuller is a graduate of the U.S. Military Academy at West Point where he received a bachelor’s degree in engineering.

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Category: Executive Profiles