Micromanagement Ventures

Micromanagement Ventures is the investment arm operating within the broader Kosner Media advisory platform. John Kosner runs Kosner Media, which offers consulting, expert witness services, and sports media valuations. This structure allows Kosner to source startup investments directly from clients and consulting engagements, turning service fees into equity positions. The two entities share the same principal and New York base, functioning as complementary vehicles.

John Kosner drives investment decisions. A former senior executive at ESPN, he built the network's digital presence over two decades before founding Kosner Media. The late David Stern, NBA Commissioner Emeritus, co-founded the venture and contributed strategic relationships to the investment process. Following Stern's death, Kosner remains the central decision-maker.

The firm invests at the earliest stages, including seed and startup rounds. It focuses on companies still forming their product-market fit in digital sports media and technology. There is no evidence of later-stage, growth-equity, or pre-IPO check-writing within the investment mandate.

The firm's operational focus is narrowly defined by sports, media, and technology. Sectors outside this intersection — life sciences, hard tech, industrials, and general enterprise SaaS — do not appear in its stated expertise or the Kosner Media client portfolio. The advisory business's history suggests a deliberate avoidance of non-media business models.

Yes. Kosner served as an advisor to 890 5th Avenue Partners, a special purpose acquisition company. This SPAC role indicates an alternative path for participating in larger, later-stage transactions within sports and media, beyond the standard seed-stage venture checks made by Micromanagement Ventures.