The firm said MacColl will strengthen the investment, client service and business development efforts for its private, institutional and non-profit clients in New England and nationally.

MacColl joins from Crosswind Investments, an investment management firm he founded and led until selling it to the Lee Munder Capital Group last year. Prior to Crosswind, he was co-chief executive and managing principal of Essex Investment Management Company, a Boston-based firm with about $5 billion in assets.   

Brown Advisory has some $33 billion in client assets, with principal offices in Baltimore, MD, and Washington, DC, as well as in Boston, MA, Wilmington, DE, Chapel Hill, NC, and London.