EDISON, N.J., June 11, 2026 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), America's leading innovator in designing, manufacturing, and providing zinc-based long duration energy storage (LDES) systems sourced and manufactured in the United States, today announced certain terms of a distribution (the "Rights Distribution") of subscription rights to holders of its common stock and holders of its warrants to purchase common stock issued on April 14, 2023, May 17, 2023, December 19, 2023 and November 21, 2025 (collectively, "Eligible Holders") to acquire shares of the Company's common stock and warrants to purchase shares of the Company's common stock in a rights offering to fund the Company's previously announced capital contribution in the Frontier Power USA joint venture.

The record date for the Rights Distribution will be at 5:00 pm New York time on July 1, 2026 (the "Record Date") and the distribution date for the Rights Distribution will be on July 2, 2026. Pursuant to the terms of certain of the Company's outstanding warrants and convertible notes, the Company is required to provide advance notice of the Rights Distribution to holders of such securities, including a 20-calendar-day notice period for certain holders of the Company's outstanding warrants and a 10-scheduled trading-day notice period for holders of the Company's outstanding convertible notes.

In the rights offering, the Company expects to distribute rights to acquire a number of units comprised of the Company's common stock and warrants (the "Units"). Each right will entitle an Eligible Holder to purchase, pursuant to the basic subscription privilege, a number of Units at a subscription price equal to an approximate 10% to 20% discount to the volume weighted average trading price of the Company's common stock for a 15 to 30 day trading period ending on and including the trading day prior to the Record Date. The warrants to be included in the Units will have a value equal to approximately 25% to 50% of the aggregate rights offering amount (with such value to be based on a Black-Scholes methodology). The rights offering will include an over-subscription privilege to permit each Eligible Holder that exercises its basic subscription rights in full to purchase additional Units (if any) that remain unsubscribed on the expiration date for the offering, subject to certain restrictions. Further details on the terms of the rights offering and the procedures pursuant to which Eligible Holders can exercise their rights and the transferability of such rights will be announced at the commencement of the rights offering. Following the commencement of the rights offering, the Company expects to provide additional investor communications in accordance with applicable securities laws and regulations.

The rights offering will be made pursuant to the Company's existing effective shelf registration statement on Form S-3 on file with the Securities and Exchange Commission (the "SEC") and a ...