Retired Wellington accountant Graham McCready is attempting to lay two new charges against ACT leader John Banks in another private prosecution.
He already laid one charge of filling out a false election return which was called in Wellington District Court last year.
Banks' attendance was excused at court.
Mr McCready has yet to get permission for the new charges to go ahead but it is expected they could be considered at the same hearing for the first charge next month.
He is expected to make application to a judge to allow the charge to be laid.
The new charges are about making false statements in a prospectus and investment statement published by Huljich Wealth Management which is run by businessman Peter Huljich.
Huljich himself was convicted in 2011 over a Securities Act charge of undermining public confidence in Kiwisaver.
The previous charge against Mr Banks came about after Internet mogul Kim Dotcom said he gave Banks $50,000, in two $25,000 cheques, towards his 2010 Auckland mayoralty campaign.
Police files revealed Banks was handed a $15,000 cheque by SkyCity executives in a branded envelope. All three donations were registered as anonymous.
Police investigated the donations but said that, although local electoral laws were broken, they did not have enough evidence to prosecute.
Mr McCready has already successfully prosecuted former Cabinet minister Trevor Mallard for fighting in a public place.
- The Dominion Post
Is New Zealand's airport security stringent enough?Related story: Risky objects bypass Wellington Airport security