Gary Shook — president of Middleburg Bank, a division of Reston, Va.-based Access National Bank — resigned March 20.

Shook also stepped down as a director of Access National Corp. and Access National Bank, as chairman and CEO of Middleburg Investment Group, and as chairman of Middleburg Trust Co.

Shook joined Access National's board when the company merged with Middleburg Financial Corp. in April 2017.