The number of women in executive and directors ranks has improved slightly, but their representation remains low.
The stock exchange operator NZX said of the 17 companies reporting in the December quarter, 15 percent of directors and 24 percent of executives were women.
That was slightly higher than the 14 percent of directors and 21 percent of executives recorded for all of 2014, which in turn was a small improvement from 2013.
Global Women managing director Faye Langdon said the data showed things were heading in the right direction.
"They show that women are slowly winning governance and executive level roles, but we still definitely need to do more to create opportunities for more diverse leadership in New Zealand businesses," she said.
Ms Langdon said boards needed to think about diversity of thought, and using non-traditional recruitment options.