Wachtell Lipton Advises OpenAI on Acquisition of Neptune Labs, Inc.

Wachtell, Lipton, Rosen & Katz represented OpenAI in its transaction to acquire Neptune Labs, Inc. On December 3, 2025, OpenAI announced that it had entered into a definitive agreement to acquire Neptune Labs, Inc. Neptune provides infrastructure to help train AI models and enables users to track experiments, monitor training and understand AI model behavior. The acquisition is OpenAI’s fourth announced purchase in 2025. Wachtell, Lipton, Rosen & Katz represented client OpenAI with a team composed by: team leadership Raaj S. Narayan, Partner, and Matthew T. Carpenter, Associate. Corporate: Andrew J. Nussbaum, Partner; Raaj S. Narayan, Partner; Matthew T. Carpenter, Associate; Claire Y. Yang, Associate; Lakshmi Prakash, Law Clerk. Tax: T. Eiko Stange, Partner; Tijana J. Dvornic, Partner; Sarah Perez Berger, Associate. Executive Compensation and Benefits: Jeannemarie O’Brien, Partner; Dixing Tang, Associate. Intellectual Property: Justin R. Orr, Counsel; Maxim A. Miroff, Associate. Antitrust: Ilene Knable Gotts, Partner; Emily E. Samra, Associate. Finance: Emily D. Johnson, Partner; Michael A. Chaia, Associate. Insurance: Ian Boczko, Partner.

Wachtell Lipton Advises OpenAI on Acquisition of Neptune Labs, Inc.

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