Plug Power Inc. (NASDAQ: PLUG) saw its shares drop sharply by 6.69% in after-hours trading following the disclosure of its financial agreement with Walmart. The decline reflects investor concerns over the terms of the deal, including a one-time initial license fee and annual license fees tied to escrow deposits.

The company announced it had entered into a Release Event License Agreement with Walmart on December 30, with additional details revealing that Plug Power will place certain software and documentation related to its GenKey system into escrow for Walmart's benefit. These financial and operational commitments may have unsettled investors, leading to the after-hours sell-off.

Plug Power, a leader in hydrogen solutions, continues to expand its partnerships and infrastructure, but the market's reaction suggests scrutiny over the financial implications of its agreements.