Washington, D.C. 20549








Date of Report (Date of earliest event reported): September 28, 2020



(Exact name of registrant as specified in its charter)


Delaware   001-39291   84-4290188
(State or other jurisdiction
of incorporation)
  (Commission File Number)   (IRS Employer
Identification No.)


299 Park Avenue, 21st Floor

New York, NY 10171

(Address of principal executive offices, including zip code)


Registrant’s telephone number, including area code: (212) 457-3300


Not Applicable

(Former name or former address, if changed since last report)


Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))


Securities registered pursuant to Section 12(b) of the Act:


Title of each class   Trading Symbol(s)   Name of each exchange on which registered
Units, each consisting of one share of Class A common stock and one-half of one redeemable warrant   BMRG.U   The New York Stock Exchange
Class A common stock, par value $0.0001 per share   BMRG   The New York Stock Exchange
Warrants, each whole warrant exercisable to purchase one share of Class A common stock, each at an exercise price of $11.50 per share   BMRG WS   The New York Stock Exchange


Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).


Emerging growth company ☒


If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐






Item 7.01. Regulation FD Disclosure.


In connection with the previously announced potential business combination (the “business combination”) between B. Riley Principal Merger Corp. II (the “Company”) and Eos Energy Storage LLC (“Eos”), on September 28, 2020, Eos’s Chief Executive Officer, Joe Mastrangelo, spoke with NJBIZ. A copy of the transcript of the interview is attached as Exhibit 99.1 to this Current Report on Form 8-K. There can be no assurance that the business combination will be consummated.


The information in this Item 7.01, including Exhibit 99.1, is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities under that section, and shall not be deemed to be incorporated by reference into the filings of the Company under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, regardless of any general incorporation language in such filings. This Current Report on Form 8-K will not be deemed an admission as to the materiality of any information of the information in this Item 7.01.


Additional Information and Where to Find It


In connection with the business combination, the Company filed a preliminary proxy statement, and intends to file a definitive proxy statement (the “Business Combination Proxy Statement”), with the U.S. Securities and Exchange Commission (the “SEC”) containing a full description of the terms of the business combination.


Investors and security holders of the Company are advised to read the preliminary Business Combination Proxy Statement and any amendments thereto and, when available, the definitive Business Combination Proxy Statement, in each case filed in connection the business combination, as these materials will contain important information about the business combination. The definitive Business Combination Proxy Statement will be mailed to the Company’s stockholders of record as of a record date to be established for the special meeting of stockholders relating to the business combination. Stockholders will also be able to obtain copies of the Business Combination Proxy Statement, without charge, once available, at the SEC’s website at www.sec.gov or by directing a request to: B. Riley Principal Merger Corp. II, 299 Park Avenue, 21st Floor, New York, NY 10171.


Forward Looking Statements


Certain statements made in this Current Report on Form 8-K are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. When used in this Current Report on Form 8-K, the words “estimates,” “projected,” “expects,” “anticipates,” “forecasts,” “plans,” “intends,” “believes,” “seeks,” “may,” “will,” “should,” “future,” “propose” and variations of these words or similar expressions (or the negative versions of such words or expressions) are intended to identify forward-looking statements. These forward-looking statements are not guarantees of future performance, conditions or results, and involve a number of known and unknown risks, uncertainties, assumptions and other important factors, many of which are outside the Company’s control, that could cause actual results or outcomes to differ materially from those discussed in the forward-looking statements. Important factors, among others, that may affect actual results or outcomes include: the inability of the Company to enter into a definitive agreement with respect to the potential business combination or to complete the contemplated transactions with Eos; matters discovered by Eos or the Company as they complete their respective due diligence investigation of the other; the risk that the approval of the stockholders of the Company for the business combination is not obtained; the inability to recognize the anticipated benefits of the potential business combination, which may be affected by, among other things, the amount of funds available in the Company’s trust account following any redemptions by the Company stockholders; the ability to meet the NYSE’s listing standards following the consummation of the transactions contemplated by the potential business combination; costs related to the potential business combination; and those factors discussed in the Business Combination Proxy Statement under the heading “Risk Factors,” and other documents of the Company filed, or to be filed, with the SEC. The Company does not undertake any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.




Participants in the Solicitation


The Company and its directors and executive officers may be considered participants in the solicitation of proxies with respect to the business combination described herein under the rules of the SEC. Information about those directors and executive officers and a description of their interests in the Company is contained in the Business Combination Proxy Statement. These documents can be obtained free of charge from the sources indicated above.




The disclosure herein is not a proxy statement or solicitation of a proxy, consent or authorization with respect to any securities or in respect of the potential business combination and shall not constitute an offer to sell or a solicitation of an offer to buy the securities of the Company, nor shall there be any sale of any such securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction. No offer of securities shall be made except by means of a definitive document.


Item 9.01 Financial Statements and Exhibits.


  (d) Exhibits




Exhibit No.   Description
99.1   Transcript of the NJBIZ Interview with Eos Energy Storage Energy LLC’s Chief Executive Officer, dated September 28, 2020.






Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


Dated: October 1, 2020 By: /s/ Daniel Shribman
    Name: Daniel Shribman

Title:   Chief Executive Officer and

            Chief Financial Officer





Exhibit 99.1


Jeffrey Kanige


00:02 Hello and welcome to NJ biz conversations. I’m your host, Jeff conine. Joining me today is Joe master. ANGELO He’s the CEO of EOS energy storage, Joe, welcome.


Joe Mastrangelo


00:11 Thanks, Jeff, how are you


Jeffrey Kanige


00:12 I’m okay thanks for for taking the time. I’m interested in interested in talking to you because you’re developing and I think I have developed as


00:24 An alternative to lithium ion batteries and when, when we’re talking about batteries. We’re not talking about the little details that people put in their flashlights. It’s a large systems.


00:32 Designed to to hold energy power produced by solar systems and


00:37 Things like that. So what you’ve developed an alternative to lithium ion. What’s wrong with lithium ion batteries. Why do


00:43 They. Why do you need to know, why do we need an


Joe Mastrangelo


00:44 Alternative so not that there’s anything wrong. But I think when, when you look at the energy landscape, you always need a mix of technology. So lithium ion is a great technology for electric vehicles.


00:55 It’s a great technology if you want short bursts of power. What we’ve developed, though, is a technology that can do long duration discharge operate in harsh environments. You know, we can go anywhere from


01:09 Minus 13 degrees to plus 50 degrees. See, without any heating or air conditioning being required


Jeffrey Kanige


01:15 Okay, and that’s that’s a shortcoming of lithium batteries.


Joe Mastrangelo


01:18 Lithium Ion needs to operate, usually within a range of 18 to 22 degrees. And if you go outside that you can damage your system, whereas our studio system has operating flexibility to allow you to operate in the largest harshest environments around the world.


Jeffrey Kanige


01:32 Okay. All right, now I then so so do your batteries use zinc.


01:38 How do they, how, what is the, is there a different process that you use to build them or how does it. How is how exactly are they different besides just the material lithium versus saying


Joe Mastrangelo


01:48 Yeah, so, so the the battery in and of itself comes from five core commodities so readily available. So you plastics titanium.


01:58 Carbon is felt and zinc and bromine make up the electrolyte our manufacturing processes relatively simple requires a lot of precision.


02:07 But doesn’t require expensive clean rooms to be able to manufacture batteries, like you see with lithium ion technology and at the same time, we have no conflict materials. There’s no precious metals, the batteries non toxic and fully recyclable. So it’s just a different chemistry.


02:23 And surrounded by a more simpler mechanical design that gives you the operating flexibility for the


02:27 Stationary storage.




Jeffrey Kanige


02:29 Okay. And it’s, it sounds like it must be significantly cheaper or less expensive to eat to build to buy to use


Joe Mastrangelo


02:36 Yeah so. So when you think about just the cost of initial purchase, you know, we’re on par with lithium ion with very low volumes, who are factory says we scale up we think we create


02:49 A capital costs or initial cost advantage from an operating standpoint because the system doesn’t require the H back and because you have a wider operating range and becomes a lower cost.


02:59 Easier system to operate out in the field. So you’ve got advantages, where you’re not going to be doing the servicing on the H back


03:07 And you have a longer life cycle with the battery, because the, you know, our life cycles 15 to 20 years without with minimal delegation okay gives you a longer life solution.


Jeffrey Kanige


03:16 Okay, and how how widespread or where are you in production. I mean, are you, are you turning these things out selling them they’re being installed. Where are they hadn’t. And how big is the


03:26 How, how big is your market. Right.


Joe Mastrangelo


03:27 Now, yeah. So it’s, it’s a great question. So, so we we saw our headquarters in Edison, New Jersey. Right. All of our testing and r&d work.


Jeffrey Kanige


03:35 Okay.


Joe Mastrangelo


03:36 We have eight systems installed around the around the world. You know, we’ve got six of them in the US and to outside of the United States.


03:45 We’ve started our gen what we call gen 2.3 product which is which is a new product, and we’ve our factory. Now we’re 100% made in America okay 80% of our materials come from, from the US our factories in Pittsburgh, Pennsylvania.


03:59 Okay, even though we moved into this factory almost a year ago to the day. So even with coven and all the restrictions and downtime that we’ve had.


04:07 We’ve gone from an empty building in an old Westinghouse factory to producing batteries and wrapping up production and our first system commercial system will ship later. Later later this fall.


Jeffrey Kanige


04:18 Okay, interesting. So that’s that’s happening now, now that


04:22 I’m sure you’re aware that that it’s a huge goal of Governor Murphy here in New Jersey to to have a I think 50% of the state’s energy supplied by renewable sources, obviously, that’s an opportunity for you. It would seem as as they develop the wind port and things like that. Yes.


Joe Mastrangelo


04:38 Right, yeah. So, so when you look at that, there’s multiple opportunities.


04:43 On doing standalone storage for, you know, the congestion of the grid. And also, I think, as as offshore wind comes in.


04:51 You have an opportunity to put these batteries at various points where you’re landing the power from offshore when


04:57 And use that the store and bring the power in the room when the grid is needed. I think that the benefit of our system is you can charge it in as little as an hour and you can discharge it from anywhere from two hours to 10 hours so




Jeffrey Kanige


05:08 That’s the


05:08 That that was my next question is how how how much power do these things store and and and what what is this eventually goes to


05:17 Businesses to residences, things like that. Is it just sort of a general this is. We’re now on the energy grid. The same electrical grid that everybody else uses


Joe Mastrangelo


05:24 Yeah, so, so the the the system in and of itself is modular to where you could take a battery and use a battery.


05:32 You could make a residential system. We don’t have that available right now, just because of where we are in our, in our development cycle from solution standpoint, but we do 20 foot standard shipping containers.
05:43 We put two of those together, no 40 foot solution which gives you a little bit under a megawatt of power, you can scale those up to as big as you need, or because of the safety measures because our battery is not flammable.
05:55 And you can put them in a standard warehouse with ventilation and put them on on on server racks and stack the batteries and create what we call our warehouse.


Jeffrey Kanige


06:04 Okay, yeah. That was, that was the next question is, what beyond just sort of supplying you know electricity for everybody. Are there other uses, can they be smaller bigger


06:15 What, what is the what is the range that we’re talking about in terms of


06:18 You know, the kinds of things, the kinds of uses that these can be put to


Joe Mastrangelo


06:21 Yeah, so, so it’s a great question. So you’ve got, you know, things where we were the battery when it started in the company’s 12 and half years old. So when the battery when the company started the goal was to


06:31 Co locate this with solar. So what you were trying to do it with solar is take the daytime solar and shift it into where you have a battery that can discharge over four hours when the sun goes down.


06:40 Right, since we’ve been operating, we found that you know we can do almost any application that requires two hours to 10 hours. So we do things like


06:48 Grid D congestion, where you’re storing you’re not next to a power source, but you’re pulling power off the grid when there’s no demand and putting it back on when there is demand we do


06:58 Do applications where we co locate with factories or commercial parks or office buildings to be able to provide power and right now.


07:06 We’re pretty excited about. We’re going through UL and fire department of New York approvals to eventually be able to get inside buildings in Manhattan, which opens up the ability to make the buildings more greener in Manhattan. And it also allows us to expand and others.


Jeffrey Kanige


07:18 Right, so, so you would be you would power the entire building with with one of these batteries.


Joe Mastrangelo


07:22 Okay, you, you, you would take you to have a system in a sub basement.


07:26 You would, you would take the building, off, off the grid. If you allow allow grid, the congestion for a period of time during the day and then charge it at night when no one’s there working


Jeffrey Kanige


07:35 Okay. And that brings to mind the use of it as sort of a


07:41 An alternative. I mean, must be safer than, for example, if a building has a generator that they have to burn off diesel fuel, it would seem, you could you could do something and replace replace that whole thing and get that out of there.




Joe Mastrangelo


07:51 Well, it’s so again depending depends on the use case, what we’re not good at and many times with diesel generators are doing is they’re that quick response.


08:00 To a power outage which our system is not designed to do that we’re going to replace would be


08:06 That during the day. So, so one of the one of the big problems you have in many areas is the grid gets congested. So look at California right now.


08:13 Where the rolling blackouts where they’re short on power with this would allow you to do is those moments where there’s more renewable power generation and there is demand story. Keep it and then bring it back on the grid when you need it later on.


08:25That’s where design. Okay.


Jeffrey Kanige


08:26 I get it and and you mentioned California that’s I was going to ask you about that too. We talked about New Jersey, where do you California would seem to be would be another market that would that would be that would be right for you folks, where else am I right about that. First of all,


08:41Where else are you seeing where else do you see opportunities around the country and around the world.


Joe Mastrangelo


08:45 Yeah. So yes, we’ve installed a couple of systems in California. In fact, we’ve had a


08:50 System running very, it’s a relatively small system, but the but the what we were really proud of is the fact that it was performing


08:5820% above its specifications of delivering 20% more energy than it then it was designed for us that just again goes to show the potential of technology.


09:06 When you look at the demand, you know, globally, you know they’re there, there’s, you know, you look last year so new power generating capacity brought online in 2019. So what was installed.


09:1880% of that was renewables and renewables creates this intermittency. It’s called where if the sun is not shining or the wind is blowing, you don’t have


09:27 Wind and Solar right we allow you to do is ride through that intermittency and shift that demand and not waste the power, depending on where your supply and demand curve is


09:35 The second thing that you’re seeing, you know, there’s a shift away from coal fired power generation new being installed around the world nuclear


09:45 With those two things coming down, which were barely like baseload technologies with renewables going up. You need low cost safe, reliable powers storage technology. We think we have is us. Okay.


Jeffrey Kanige


10:00All right before I let you go I readers of viewers who are also readers of NJ biz, and I hope they are


10:07 Also know that you’re planning to be a publicly listed company fairly soon through a merger with a special purpose acquisition company sponsored by the Riley.


10:15 Can you tell us anything about where that deal is and and is it on is still on track. I think you said you’re supposed to close by the end of this year. Is that still on track and everything okay with that.




Joe Mastrangelo


10:23 Yeah, so, so we filed. You know, we’ve signed a definitive agreements we filed


10:27 Our proxy, you know, we’re in the process of going through SEC approval. We once we get through the approval will, will the stock will be quoted


10:34 On the on the NASDAQ so to me it’s a great way where we were was kind of sitting with a product that needed capital to scale and what B Riley has brought us is that capital to be able to grow our business, which is really exciting.


Jeffrey Kanige


10:46 Yeah, and that was going to be the last thing is, what does that. What does that mean for your company and for its growth and for where you can go from here.


Joe Mastrangelo


10:54 Yeah, our plan is, you know, we’re going to be expanding our facility in Edison and growing our engineering team growing a global Salesforce.


11:03 And then also expanding our factory in Pittsburgh. So we basically taken what was an empty former fossil fuel facility at Westinghouse and turned it into green tech jobs and, you know, we’re out hiring you. We can’t hire fast enough. Right now, which


Jeffrey Kanige


11:16 Well that’s that’s in and and right now that’s that’s that’s good news.


11:21 For a lot of people and and because it’s as you say it’s it’s either green jobs that that’s that’s where, that’s where a lot of the focus is especially, especially in the northeast and as you say in California. So


11:32 I’d love to check back in with you at some point and see how you’re going maybe after the deal closes. We can talk again about


11:38 About but what you’re doing and and how those plans are going


Joe Mastrangelo


11:41 Fantastic, or just. Thanks a lot.


Jeffrey Kanige


11:42 Okay, Joe. Mr. ANGELO. Thank you, from EOS energy storage. Thank you very much for joining us. I really appreciate it.


Joe Mastrangelo


11:47 Thank you for the opportunity.


Jeffrey Kanige


11:49 And thank you all for watching. Until next time, stay safe everyone