"We passed 5,000 season memberships at the weekend – the first time ever we have gone past that number in our history," Dome said.
"We are extremely grateful for the support of fans around New Zealand, Australia and the world who have got in behind the Club on the back of the #savethenix campaign.
"Led by Yellow Fever, the groundswell of support has been really humbling."
The number could yet rise, with Dome announcing part-season ticket sales were yet to be added to the total.
"Our Final Four Package goes on sale on February 1 – fans can select any four games of our final six at Westpac Stadium," he said.
"We are hopeful we will get a few more season tickets out of this as well."