John Chigbu

IWA Team

March 25, 2026

John Chigbu
Chairman/CEO, Cassona USA Inc & Managing Partner, Chigbu & Co LLP

John Chigbu is Managing Partner at Chigbu & Co, and they specailise in tax planning (Domestic & International), compliance and tax controversy representation. In his practice, he also acts as contract tax director of his clients’ tax departments.

John is a dynamic and results-driven International Corporate Tax Lawyer and CEO with 25+ years of experience leading multinational operations, healthcare ventures, and complex cross-border transactions across the U.S., Europe, Asia and sub-Saharan Africa. He is a former General Tax Counsel and Tax Executive for multiple Fortune 500 companies, and is globally recognised for delivering operational scale, governance excellence, and innovative business models in emerging markets. 

Prior to founding Chigbu & Co, John was the Global Vice President of Tax and Treasury for Sanmina-SCI Corporation, a $12 billion multinational electronic manufacturer. Before that, he was the General Tax Counsel and VP for Business Objects SA, a $5 billion French software company headquartered in Paris, France.

As Founder, Chairman & Chief Executive Officer at Cassona USA Inc., the company is a U.S.-based healthcare solutions company transforming diagnostics access across sub-Saharan Africa through affordable equipment, structured financing, and professional training.

John spearheaded pivot from green energy project finance to healthcare logistics and infrastructure post-COVID, oversaw expansion into West Africa with incorporation of Cassona Global Imaging Ltd Ghana (2022) and Cassona Global Imaging Nigeria Ltd (2024), built strategic partnerships with OEMs (Neusoft Medical Systems and Mindray), securing exclusive regional distribution rights, designed and launched lease-to-own programmes and diagnostic centre models tailored to local market needs.

John was educated in London School of Economics, University of Texas, Louisiana State University Law Centre and New York University School of Law. He holds a combined Bachelors (BA) degree in Economics and Political Science, Juris Doctor (JD) degree and a Master at Law degree in Taxation (LLM). He is admitted to practice law in the States of California and New York.

John was a flight Pilot in the Nigerian Military Police before he commenced studying of law.