Alastair Scott and Rebecca Thomas will join the NZ-owned bank next month.
Jen Baird will start the role in early July.
Rhiannon McKinnon previously served for three years as general manager of strategy and partnerships at Kiwi Wealth.
Joe Halapua will be responsible for managing the active internal New Zealand equities portfolio.
Angela Watson, Rob Campbell and Levi Slavin will lead Colenso into a new era for the agency.
Deep-tech champion Vignesh Kumar joins board as an independent member and Zoe Murphy as an observer.
Mark Verbiest will take up the role of board chair on July 1.
Mike Bignall takes CEO role as MD Gill Webb steps down at the end of June after 30 years at the helm.
Will Wright takes up the role of chief financial officer on July 5, 2021.
Paula Steed has been appointed as GM finance and investment operations and Mark Fennell has been appointed as GM risk.