Company: ARBK
Filing Date: 2025-05-15
Form Type: 20-F
Source: 0001104659-25-049311
Chunk: 42

Company: Argo Blockchain Plc
Filing Date: 2025-05-15
Form: 20-F
Item: Item 4A
Chunk 42
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, a digital infrastructure company. Prior to his role at Arkon Energy, Mr. Nolan served as Chief Growth Officer at Argo. In this capacity, he played a pivotal role in expanding the Company’s operations, including the development of the Helios project. Earlier in his career, Nolan co-founded and led DPN LLC, which was instrumental in the initial development of the Helios project before its acquisition by Argo Blockchain in March 2021. Mr. Nolan graduated from Johns Hopkins University.

Thomas Chippasserved as our Chief Executive Officer from November 2023 to February 2025. Mr. Chippas is a seasoned executive with significant experience in digital assets, technology, and financial services. Prior to his role at Argo Mr. Chippas most recently he served as the Chief Executive Officer of CBOE Digital where he was also a former member of its Board of Directors. He has previously held the positions of Chief Executive Officer of Citadel Technology LLC, Chief Operating Officer of Axoni and Managing Director of Citigroup, Barclays and Deutsche Bank. He currently serves as a director of TS Imagine. Mr. Chippas graduated from the University of Illinois with a BSc, Accounting. Mr. Chippas resigned from the Company effective February 28, 2025.

Jim MacCallumhas served as our Chief Financial Officer since April 2023. Mr. MacCallum brings over thirty years of experience across various roles in finance and accounting. Most recently, he served as Chief Financial Officer of East Side Games Group, a publicly-traded mobile game platform technology company based in Canada from March 2021 to April 2023. Prior to East Side Games Group, he was Senior Vice President, Finance and Acting Chief Financial Officer at Westport Fuel Systems Inc, a dual-listed and publicly-traded clean transportation technology company from 2015 to 2021. Mr. MacCallum is a Certified Public Accountant and a CFA Charterholder. He graduated from the University of British Columbia with a B. A. in Economics and completed the Advanced Management Program at Harvard Business School.

Non-Executive Directors

The following is a brief summary of the business experience of our non-executive board members.

Matthew Shawhas served on our board of directors since July 2019, and he became chairman of the board of directors in February 2023. He brings over 25 years of experience as an international banker, corporate adviser, and serial entrepreneur. He has been specializing in the blockchain and cryptocurrency sector since