Sideline Group announced the close of its debut fund, raising $155 million in committed capital to invest in what it describes as the “offline” economy, focusing on physical experiences and community-driven businesses.
The fund, Sideline Group Fund I, exceeded its initial fundraising target and is backed by a mix of institutional investors, including a U.S. university endowment, funds of funds, family offices, as well as sports team owners, investment firm founders, and operators.
Sideline is targeting opportunities at the intersection of consumer, sports, and media and entertainment, with a strategy centered on businesses that benefit from growing demand for in-person experiences and active lifestyles. The firm’s thesis reflects broader shifts in consumer behavior, as hybrid work and increasing digital saturation drive renewed interest in real-world engagement and community.
Founded by Greg Mazlin, Sideline builds on his background in private equity and public market investing, including roles at Silver Lake and Tiger Global. The broader team brings experience from firms such as Blackstone, Permira, Stripes Group, and Boston Consulting Group, supporting a research-driven and disciplined investment approach.
Fund I has already deployed capital across several investments, including Bandit Running, Urban Golf Performance, MARI, and Milky Way Park, spanning categories such as performance apparel, fitness and training, global sporting events, and adventure experiences.
The firm’s strategy positions it to capitalize on long-term trends favoring experiential consumption and wellness-oriented activities, as consumers increasingly prioritize physical connection and shared experiences over purely digital engagement.
