OpenAI Startup Fund SPV III, L.P.

The single named GP (Hathaway) combined with zero prior EDGAR filings suggests OpenAI's venture arm operates without public-facing fund infrastructure until now, meaning this filing surfaces a previously opaque allocation operation and signals either a shift toward LP reporting transparency or a structural change in how the entity manages capital.

An amended filing in May 2026 during a period of AI sector consolidation and LP rebalancing indicates the fund is recalibrating terms, LP commitments, or strategy mid-cycle rather than launching fresh—typical when a manager encounters document negotiation delays, changes in capital allocation pace, or unexpected LP withdrawals that require amendment.

Verify whether a key-man clause tied to Hathaway exists and confirm the scope of his decision-making authority relative to OpenAI corporate leadership, since a single GP at a corporate venture arm creates concentration risk if his role, compensation, or continuity changes—particularly important given the absence of prior public filings to assess operator stability.