McMahon Capital Management

McMahon Capital Management

McMahon Capital Management is the private investment vehicle of John J. McMahon, the founder and former chief of Lone Star Funds. McMahon launched Lone Star in 1995 and ran it through two decades of high-profile distressed acquisitions, including the 2004 purchase of Korea Exchange Bank. He stepped away from day-to-day control in 2010, and the family office represents the pool of capital generated from that track record. The office operates at the intersection of real estate equity and private credit, mirroring the Lone Star playbook. McMahon buys commercial real estate — often off-market distressed or special-situation assets — while also providing direct lending for transitional properties. Confirmed investment themes include US multifamily development, non-performing loan portfolios in Europe, and energy-transition infrastructure repositioning across Texas and the Gulf Coast. The office has been known to co-invest with former Lone Star deputies and has evaluated joint ventures with institutional operators including Greystar (per public record). Team size is not publicly disclosed, though multiple filings reference a small group of investment professionals operating from a base in the southeastern United States. Adjacent structures include philanthropic activity through the McMahon Family Foundation, which directs grants to veterans' causes and Catholic education. Several Lone Star alumni are believed to serve as consultants or board observers on major McMahon Capital positions. What distinguishes the office structurally is its origin inside a firm that pioneered the institutionalization of distressed real estate investing. McMahon Capital does not market for outside capital and carries no fee-based revenue stream, which gives it a posture entirely different from a private equity GP — it is long-term patient capital for an operator who built his reputation on complex, multi-jurisdictional asset workouts.