Eos Energy Enterprises, Inc. reported an insider equity award involving Haiyan Song, with the transaction dated July 13, 2026 and the ownership report signed on July 15, 2026 by Marie Martin as attorney-in-fact for Song. The filing indicates that Song received restricted stock units, or RSUs, tied to Eos Energy common stock. Each RSU represents a contingent right to receive one share of the company’s common stock. The award is a derivative security because the RSUs convert into, or are settled by reference to, common stock at a later date. The RSUs may be settled either in cash or in shares of common stock. According to the explanatory notes, the award will vest on the earlier of two dates: the first anniversary of the grant date, or immediately before the date of Eos Energy’s next annual shareholders meeting following the grant date. This structure is commonly used for director or service-based equity compensation, aligning the vesting period with an annual board or shareholder cycle. The provided filing text does not disclose the number of RSUs granted, the transaction code, any exercise or conversion price, or Song’s exact beneficial ownership after the transaction. No open-market purchase or sale is described, and no cash price paid by the reporting person is stated. The key reported action is therefore the grant of RSUs to Haiyan Song, with future settlement in cash or Eos Energy common stock depending on the company’s award terms.