Form 4 Filing for Eos Energy Enterprises, Inc.

Alessandro Lagi, Chief Financial Officer of Eos Energy Enterprises, Inc. (EOSE), acquired 195,130 Restricted Stock Units (RSUs) on August 24, 2026. These RSUs, granted under the Issuer's 2020 Incentive Plan, represent a contingent right to receive one share of common stock per unit. The RSUs will vest in three installments over the next three years, contingent upon continued service. The reported transaction is classified as an acquisition under transaction code "A". Mr. Lagi holds these as direct ownership. The value of the transaction is based on a price per share of $0.0, with a post-transaction ownership of 195,130 shares of underlying common stock.