NZ First won't reveal the members of the board who will determine New Zealand's next government because they deserve their privacy.
Leader Winston Peters says his party values transparency but also an individual's privacy.
The board had been expected to meet in Wellington on Friday to consider two choices put to them after five days of negotiations come to an end on Thursday night.
But Mr Peters has now pushed that out saying logistics means they might not meet until Monday.
He first told reporters that board members could have been identified at the party's annual conference earlier this year, but later put out a statement saying their identities would be protected.
"By putting their name forward to serve on the board they do not expect to have their privacy invaded and to become public figures," he said.
"New Zealand First values transparency but we also value an individual's privacy especially when they volunteer their services."
The party's president Brent Catchpole had reluctantly sought two days ago to release a full list of board members but retracted that plan after some board members asked to have their names withheld.
"You don't need to know the names of the board members. It's as simple as that," he told BusinessDesk on Thursday morning.
"That's just something you're going to have to live with."
The only publicly disclosed members are Mr Peters, deputy leader Ron Mark, Mr Catchpole and secretary Anne Martin.
RNZ has published a list it says it obtained from party sources, naming a vice president North Island, Julian Paul, a vice president South Island, John Thorn, and treasurer Holly Hopkinson.
Claire Ashley, Toa Greening, Robert Monds, Anne Marie Andrews, Kevin Gardener and Sue Sara are listed as other directors.