Roxy Jacenko's husband has made a long-awaited return to the finance industry - five years after he was jailed over insider trading.

Oliver Curtis is gearing up to take bitcoin mining business Firmus Grid to the ASX for 2022, as he tries to move on from being found guilty of conspiracy to commit insider trading.

The father-of-two is not permitted to run or serve as a director of a business until June 2022 as part of a court-ordered mandate.

He serves as the company's chief operating officer while his father Nick - who made his fortune in mining selling rare minerals - is chairman.

Curtis' role, which is well within the guidelines of his court order, does not directly manage the finances and is helping to shape the company as it seeks to become the first of it's kind on the Australian stock exchange.

The Tasmania-based bitcoin mining operation is seeking to raise $55 million to land on the ASX market next year, the Australian Financial Review reports.

In addition to the bitcoin mining, Firmus operates a renewables-powered cloud service and 'innovative data centre company'.

Curtis' role with his father's new venture prompted his decision to part ways with his wife in one of their business deals, four years after launching PR company 18 Communications together.

The company, which aimed to promote Australian brands in the Chinese market, officially closed this month, with Ms Jacenko confirming the news exclusively to Daily Mail Australia at the time.

'I opened the business four years ago when Oli was released [from jail] to help him get back on his feet, given his extensive knowledge of China from his work over the years,' Ms Jacenko said.

The 41-year-old entrepreneur explained that 18 Communications enjoyed plenty of success, and the only reason why it closed was because neither she nor her husband had the time to run it.

Curtis served a year-long sentence at Cooma Correctional Centre, after a sensational court case found him guilty of conspiring to commit insider trading. He was released on June 23, 2017.

Upon his release, he told Daily Mail Australia that he tried to make the best of a bad situation while he was in custody.

'You've got two ways to deal with it. You either shut down and be reclusive and stay within yourself - that's not who I am. Or you have to deal with it, and fit in and adjust,' he said.

He got emotional when describing his pain at being separated from his wife during a period of such turmoil in her personal life.

The powerhouse publicist was diagnosed with breast cancer shortly after he began his stint in prison.

'I was in a two by four (cell) on my own in solitary confinement… And I got let out once a day. I was locked into another cage to take a phone call, I had a seven minute phone call.

'During that process, over a matter of three or four days, I found out A) that Roxy had found a lump B) she went to get tested and C) that she had cancer … And you're sitting in a jail cell on your own with nobody and no ability to communicate with anybody.'