Furthermore, the recording played on 60 Minutes suggests it was ACC managers who first raised a deal for the return of the leaked information.
However, Ms Collins mentioned none of this in her statement this afternoon, instead she said Mr Judge was taking up the role of chair of the ANZ National Bank on June 23.
"Mr Judge's new role is a significant appointment and will require even more of his time than his current role as a director.
Speaking to reporters, Ms Collins said she'd met with Mr Judge this morning to talk about his departure, a matter they had been discussing for "some time".
"Mr Judge agreed with me that it would be appropriate given his new role and the fact that to bring in the new culture into ACC that I want to see, improving on the work that's already been done it would appropriate for him to step down."
Ms Collins said she supported the ACC board and management's decision to lay the complaint with police.
"I have confirmed and backed their decision on the basis of the information they had at that time and I don't know what else they could have done faced with the information they had from their managers."
She said the decision to go to the police was made by Mr Judge and Mr Stewart, and that decision was also backed by from their legal team.
She could not say "with any certainty" whether the matter was discussed with her before
the complaint was made to police.
Ms Collins would not comment on whether Mr Stewart should remain as chief executive of the corporation, saying that was a matter for the board.