Cryptocurrency mining company Argo Blockchain has announced the appointment of Colleen Sullivan, Maria Perrella and Sarah Gow to the board as independent non-executive directors, and Alex Appleton as an executive director.

Colleen Sullivan is currently CEO of CMT Digital, a division of CMT Group, specialising in crypto-asset trading and blockchain technology investments. Sullivan was previously a lawyer at Sidley Austin and was a co-founder and managing member of Sullivan Wolf Kailus.

Maria Perrella most recently served as CFO of MDA, a Canadian-based international space mission partner, and previously worked at ATS, a TSX-listed automation company.

Sarah Gow is a former director of global operations at Citigroup Asset Management in New York, as well as a head of operations in London. She was a founding partner of UK-based asset management company TrinityCapM.

Alex Appleton has served as Argo Blockchain’s finance director since September 2020 and has now been appointed to the board as an executive director.

In other board moves at the company, executive chair Ian MacLeod is stepping down and will be replaced as interim chair by CEO Peter Wall. Non-executive directors James Savage and Marco D’Attanasio are also departing the board.

Peter Wall, Argo CEO, said: “We are delighted to welcome Colleen, Maria, and Sarah to the board as independent directors. Each brings a wealth of experience within the cryptocurrency, technology, and finance sectors, and specific insight that will be invaluable as Argo looks to continue to progress as a global leader in cryptocurrency mining.

“I am also pleased to welcome Alex Appleton to the board as an executive director following his valuable contribution to the company’s business to date.”

Wall also expressed his thanks to MacLeod, Savage and D’Attanasio “for their exceptional service during their tenure”.