Four Tree Island Advisory LLC, one of the largest shareholders of Willis Lease Finance Corporation $(WLFC)$, has publicly called for enhancements to the company’s stockholder communication, investment community engagement, and corporate governance. In an open letter addressed to the WLFC board of directors, Eric Gregg, Principal and Founder of Four Tree Island Advisory, expressed concerns about the material undervaluation of WLFC shares and the company’s underperformance relative to peers such as FTAI Aviation and AerCap. The letter, originally sent privately in November 2025 and later released publicly, details recommendations for improvement and urges a transparent and timely process to address the identified issues. Four Tree Island Advisory’s actions follow unsuccessful attempts at private engagement with the company.

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