Sideline Group
PE / VC · New York · United States
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Profile
Sideline Group is a New York-based investment firm that focuses on private equity and venture investments, primarily in the offline economy. Founded by Greg Mazlin, the firm partners with brands and operators in consumer goods, sports, media, and entertainment, emphasizing growth-stage businesses that promote healthier lifestyles and community engagement. The team comprises professionals with backgrounds from notable firms like Blackstone and Boston Consulting Group, ensuring a disciplined investment approach. The firm manages private equity and early-stage venture funds, including its debut Sideline Group Fund I, which closed in 2026 with $155 million in committed capital. Sideline Group targets investments in areas such as performance apparel, fitness concepts, and community-driven events. Its portfolio includes companies like Bandit Running and Urban Golf Performance, reflecting its commitment to active lifestyles and experiential consumption.
Contacts (2)
| Name | Title | Phone | ||
|---|---|---|---|---|
| Founder | — | — | — | |
| Principal | — | — | — |
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