The three public sector shareholders of Kiwibank injected NZ$247 million of capital into the bank on Monday, to stave off doubts over the compliance of older hybrid securities to satisfy central bank rules.NZ Post, the NZ Super Fund and ACC funded the capital proportionate to their existing shareholdings and in line with an undertaking made last month after Kiwibank found itself obliged to abandon a planned wholesale borrowing.Kiwibank said that it "remains of the strong view that [two] existing convertible capital instruments are compliant" and is working with the Reserve Bank of New Zealand to resolve the matter.The bank's chair, Rob Morrison, and deputy chair Rhoda Phillippo, will leave the Kiwibank Board at the end of this week.Susan Macken, who spent 11 years on the board of NAB's Bank of New Zealand until she joined the Kiwibank board in 2016, will replace Morrison as chair.