Marian Walters plan to sell securities of Eos Energy Enterprises, Inc. under Form 144

Marian Walters filed Form 144 to notify SEC of plan to sell 30000 units of Eos Energy Enterprises, Inc. securities around 2026-05-28, with aggregate market value of $275,400.00. The total outstanding units is 339514027.0. The amount planned to be sold represents 0.01% of total outstanding units; Recent transactions in past 3 months include: On 05/19/2026, sold 7681 units for $54304.00; On 05/20/2026, sold 22319 units for $157795.00;