Kofi Owusu-Acheaw
Founder & Managing Partner
Kofi Owusu-Acheaw is the Founder and Managing Partner of Semper, KOACH & O. Ltd (KOACH & O), a strategy and advisory firm built on disciplined thinking, institutional navigation, and long-term value creation. A pan-African industrialist and economist, he has shaped the firm's philosophy: lead with clarity, move with integrity, and align the right people, structures, and timing to unlock outcomes.
Beyond the firm, he builds the capability Africa has too often had to import. He has founded ventures in artificial intelligence and autonomous systems on African soil, led a workforce of more than 1,300, coordinated a billion-dollar smart-city programme, and built enterprises across the extractives, finance and infrastructure value chains, with a wider portfolio spanning private credit, trade and food security.
Known for a measured, principled approach, Kofi advises across real-economy sectors including agribusiness, logistics and infrastructure, strategic real estate, financial services, and security-focused technology. His conviction is simple: that Africa should produce, not import, the capability that secures its own future.
VA
Vanessa Appah-Gyamenah
COO & Managing Partner
Vanessa Appah-Gyamenah is the Chief Operating Officer and Managing Partner of Semper, KOACH & O., where she oversees the firm's operations and its investment-systems and financial-analysis capability. An economist and senior financial-software consultant based in Copenhagen, she brings institutional discipline to how the firm runs and how it advises across capital markets, private credit, and portfolio management.
For more than five years she has implemented and tested SimCorp Dimension, the platform behind many of the world's asset managers, banks, pension funds, insurers, and central banks, spanning private debt, portfolio management, investment structures, and performance analytics. Her consulting spans Europe and Africa, including the Central Bank of Kenya and leading Nordic asset managers and pension funds, and she currently maintains front-office solutions at a major Danish bank.
Her foundation is rigorous and international: a Master of Science in Economics from the University of Copenhagen and a Bachelor of Arts in Economics from the University of Ghana, where she was awarded best economics student. A Certified SimCorp Professional, Certified Tester, and Portfolio Management Specialist, she works fluently across financial analysis, data analytics, and agile delivery, on the conviction that disciplined systems and clean data are what let ambition scale.