Marissa Fengler joined GKFF in 2025, where she leads the investment operations function for the Foundation. Her team efficiently manages the accounting, operations and finance functions of the investment group. Guided by a commitment to real-time accuracy, she focuses on understanding current processes and technology, then implementing targeted efficiencies to strengthen decision-making—advancing GKFF’s mission of building a growing and more vibrant Tulsa. Previously CFO at Atento Capital, Marissa oversaw $150M+ in assets, implemented scalable financial systems and enhanced operational transparency. Earlier, as Lead Controller at Pacific Healthworks, she drove profit turnarounds and growth initiatives. A CPA (inactive) with over a decade in strategic finance and operations, Marissa enjoys gardening, travel and family adventures with her husband and two young children, as well as hosting large gatherings for friends and extended family.

‍