Launched earlier this year, Cuncannon is a boutique litigation and class action firm.
Former Cabinet Minister to take over from Tim Grafton in April.
Nick Luckock, who joined the board as a representative of private equity firm HG Capital, will not seek re-election in February.
Paul Gregory immediately stood down from FMA regulatory work.
Jodi O'Donnell steps up from her current role as the broadcaster's commercial director on January 30.
Two senior managers swap roles.
Colin Keel, transport and infrastructure specialist joins SO Capital and Ocean Flyer governance board.
The KKR-owned company has appointed chief executive with a 35-year career in the FMCG industry.
Andrew Holmes will become chief executive and senior partner from April 1, 2024 for an initial four-year term.