Eos Energy Enterprises, Inc.

The investment by the Company in the JV Company is expected to be financed by a rights offering to holders of Eos Common Shares and certain of its outstanding warrants as of a future record date (the “Rights Offering”). The Rights Offering will target a raise of $150 million, the proceeds of which are expected to be used by the Company to fund the Initial Class B Contribution, and the Rights Offering will not raise an amount in excess of $150 million without the prior written consent of CCM Frontier. The Company’s stockholders that participate in the Rights Offering (the “Rights Offering Participants”) are expected to receive Eos Common Shares (in addition to certain warrants with respect to Eos Common Shares as described below) up to their pro rata entitlement (the “Basic Subscription Right”). At expiration of the Rights Offering, Rights Offering Participants that have fully exercised their Basic Subscription Right may also exercise an over-subscription right to purchase additional Eos Common Shares (in addition to certain warrants with respect to Eos Common Shares as described below).

The terms of the Rights Offering will be determined by the Company in good faith consultation with CCM Frontier. The mechanics, sequencing and legal structure of the Rights Offering (including (without limitation) with respect to issued warrants, which are further described below) is to be separately documented, and remains subject to, among other things, certain consents, applicable securities laws and Nasdaq requirements.

Rights Offering Participants are expected to be entitled to receive warrants (each a “RO Warrant”) to purchase a number of Eos Common Shares (such shares, collectively, the “RO Warrant Shares”) equal to (a)(i) their respective subscription amounts, multiplied by (ii) 33% and divided by (b) a valuation per warrant to be mutually agreed to by CCM Frontier and the Company (which will be the same valuation used for determining the shares underlying the CCM Frontier Warrant described below), provided, however that in no event will such valuation result in pro forma dilution to the holders of Eos Common Shares, assuming each holder of Eos Common Shares fully subscribes to its pro rata share of the Rights Offering (such value, the “Applicable Value”).

Upon issuance, the RO Warrants are expected to entitle Rights Offering Participants to purchase the RO Warrant Shares at an exercise price per share equal to a 20% discount to the 15-day VWAP of the Eos Common Shares as of launch of the contemplated Rights Offering. The RO Warrants are expected to expire on the 10 year anniversary of Closing.

The RO Warrants are expected to be exercisable for cash or on a cashless basis.