Eos Energy Enterprises Officer Stock Transactions - RSU Vesting and Tax Withholding Sales

This SEC Form 4 filing reports transactions by Nathan Kroeker, CCO and Interim CFO of Eos Energy Enterprises, Inc. (EOSE). The filing covers transactions from July 3-7, 2026, involving restricted stock unit (RSU) vesting and subsequent stock sales. On July 3, Kroeker received 53,610 shares from vested RSUs, increasing his holdings to 751,411 shares. On July 5, he received an additional 105,008 shares from RSU vesting, bringing his total to 856,419 shares. On July 7, he sold 79,309 shares at a weighted average price of $4.68 per share, with the sales executed under a Rule 10b5-1 trading plan adopted on September 15, 2025. The sales were specifically for covering estimated tax withholding obligations related to the RSU vesting. Following these transactions, Kroeker's total ownership stands at 777,110 shares. The RSUs were granted under the company's 2020 Incentive Plan and vest in three equal annual installments.