Mr Gallaher delayed his retirement in September last year until a successor was appointed.
Mr Flood joined the board as a director this week.
In a statement, Pacific Edge said he brought a wealth of experience in business leadership and a global perspective on capital markets and investment management.
He has held senior investment management and leadership roles in London, Hong Kong and Singapore with Mercury Asset Management, Axa Investment Management, Lion Global Investors and Merrill Lynch Investment Managers.
He has also worked as an executive director at UK-based, technology-focused venture capital firm Imprimatur Capital.
Since returning to New Zealand in 2015, Mr Flood has been appointed to several governance positions across a variety of sectors.
He is chairman of Queenstown Airport, a recent appointee to the Tertiary Education Commission, and several South Island organisations. — Allied Media
