Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company") today announced the pricing of a registered direct offering (the "Offering") to Hudson Bay Capital Management of 13,683,634 shares of our common stock, par value $0.0001 per share, and 6,004,378 warrants, each warrant to purchase one share of common stock at an exercise price of $5.481 per share. Each share of common stock is being offered and sold together with 0.4388 of an accompanying Warrant at an aggregate offering price of $5.481. The Offering is being made pursuant to the Securities Act of 1933, as amended (the "Securities Act"). The Offering is expected to close on July 1, 2026, subject to customary closing conditions.

The proceeds from the Offering are expected to be approximately $75 million (excluding any future exercise of warrants). Eos expects to use the net proceeds from the Offering as well as any proceeds from its proposed rights offering to fund its contribution to Frontier Power USA Parent, LLC ("FPUSA"). The closing of this Offering is subject to customary closing conditions.