Eos Energy Enterprises Q2 2021 Financial Results August 11, 2021 Eos. Positively ingenious. 2 Disclaimer Forward-Looking Statements and Investment Considerations This presentation includes "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1996. The actual results of Eos Energy Enterprises, Inc. ("Eos") may differ from its expectations, estimates and projections and consequently, you should not rely on these forward-looking stat ...

Eos Energy Enterprises, Inc. (NASDAQ:EOSE) Q2 2021 Earnings Conference Call August 11, 2021 8:30 AM ET Company Participants Jared Ehm - Investor Relations Joe Mastrangelo - Chief Executive Officer Sagar Kurada - Chief Financial Officer Conference Call Participants Chris Souther - B. Riley Subash Chandra - Northland Securities Tom Curran - Seaport Research Partners Operator Greetings and welcome to Eos Energy Enterprises Second Quarter 2021 Conference Call. At this time, all participants are in a listen-only ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-39291 EOS ENERGY ENTERPRISES, INC. (Exact name of registrant as specified in its charter) Delaware 08-7654321 ( ...

Financial Data and Key Metrics Changes - The company recognized revenue of $164,000 from its first container shipped to Nigeria, marking a significant milestone [22] - The cost of sales was positively impacted by a reversal of $1.6 million reserved for losses on firm purchase commitments from Q4 2020 [23] - R&D expenses increased to $5 million, primarily due to higher battery testing costs and increased investment in new technologies [24] - General and administrative expenses totaled $16.6 million, including $7.8 million in non-recurring expenses related to the acquisition of a 51% interest in a joint venture [25][26] - As of March 31, 2021, the company had $101 million in cash and cash equivalents [27] Business Line Data and Key Metrics Changes - The company reported $33 million in booked orders year-to-date, with a backlog covering 50% of its 2021 revenue target [15][34] - The opportunity pipeline increased to $3.9 billion, representing 23-gigawatt hours of storage opportunities [11] - The company shipped its first container to Nigeria, generating $200,000 in revenue [13] Market Data and Key Metrics Changes - The commercial pipeline consists of $3.9 billion, with $3.3 billion in active proposals and $0.6 billion in firm commitments [31] - The company has seen a 33% increase in orders compared to the previous year [10] Company Strategy and Development Direction - The company aims to achieve $50 million in revenue for 2021 and is focused on expanding its global pipeline coverage [86] - The company is transitioning strategic letters of intent (LOIs) into firm orders [14] - The company is on track to close UL1973 certification by the end of June, which is critical for growth [51][87] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in achieving the $50 million revenue target and noted strong momentum in demand for the rest of 2021 [34][87] - The company is focused on building out its capacity and developing technology to meet increasing demand [12][19] - Management highlighted the importance of UL certification for customer confidence and order conversion [98] Other Important Information - The company has doubled the size of its manufacturing team and is focused on hiring and training [18][60] - The company has successfully shipped six containers to various customers, with expected deliveries primarily in the second half of 2021 [48] Q&A Session Summary Question: What is the expected revenue split between Gen 2.3 and Z3 products? - Management indicated that the $10 million in sales over the next five months will primarily consist of Gen 2.3 products, with a mix expected throughout the year [91][92] Question: How much of the remaining orders are in late stages or firm commitments? - Management noted that there is a $3.9 billion pipeline, with $600 million in LOIs and firm commitments, and they expect a portion to convert into booked orders [95][96] Question: Are customers waiting for full system UL certification before placing orders? - Management confirmed that all booked orders are subject to UL testing and certification, which is expected to be completed in the second quarter [98] Question: Are there any supply chain issues affecting the company? - Management stated that there are currently no shortages in materials, but they are monitoring power electronics supply [106] Question: How does the JV buyout impact margins and breakeven points? - Management indicated that the buyout has a positive impact on supply chain integration and cost reduction efforts, with expected margin improvements in 2022 and 2023 [108][110] Question: What is the CapEx cadence and expected cash burn for 2021? - Management outlined committed capital of approximately $15 million for customer financing and emphasized a careful approach to financing strategies [112]

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-39291 EOS ENERGY ENTERPRISES, INC. (Exact name of registrant as specified in its charter) Delaware 08-7654321 ...

Eos Energy Enterprises Q1 2021 Financial Results May 12, 2021 Eos. Positively ingenious. 2 Disclaimer Forward-Looking Statements and Investment Considerations This presentation includes "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1996. The actual results of Eos Energy Enterprises, Inc. ("Eos") may differ from its expectations, estimates and projections and consequently, you should not rely on these forward-looking stateme ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark one) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended: December 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to | --- | --- | --- | |------------------------------------|----------------|-----------------------| | Delaware | 001-39291 | 84-4290188 | | ( ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39291 | --- | --- | |----------------------------------------------------------------------------|-------------------------- ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39291 B. RILEY PRINCIPAL MERGER CORP. II (Exact Name of Registrant as Specified in Its Charter) | --- | |------------------------ ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39291 B. RILEY PRINCIPAL MERGER CORP. II (Exact Name of Registrant as Specified in Its Charter) | --- | --- | |----------------- ...