Heliogen, Inc. (Form: S-1, Received: 01/24/2022 17:19:40)

As filed with the Securities and Exchange Commission on January 24, 2022

Registration No. 333-

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

______________________

FORM S-1
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

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Heliogen, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware		6770		85-4204953
(State or Other Jurisdiction of Incorporation or Organization)		(Primary Standard Industrial Classification Code No.)		(I.R.S. Employer Identification No.)

Heliogen, Inc.
130 West Union Street
Pasadena, California 91103
Tel: 626-720-4530

(Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant’s Principal Executive Offices)

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Debbie Chen
General Counsel
Heliogen, Inc.
130 West Union Street
Pasadena, California 91103
Tel: 626-720-4530

(Name, Address, Including Zip Code, and Telephone Number, Including Area Code, of Agent for Service)

______________________

Copies to:

Dave Peinsipp
Dave Young
Cooley LLP
3 Embarcadero Center, 20th Floor
San Francisco, California 94111
Tel: (415) 693-2000

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Approximate date of commencement of proposed sale to the public: From time to time after the effective date of this registration statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, please check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 under the Securities Exchange Act of 1934:

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☒
		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 7(a)(2)(B) of the Securities Act. ☐

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CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities to be Registered	Amount to be Registered(1)		Proposed Maximum Offering Price Per Share			Proposed Maximum Aggregate Offering Price		Amount of Registration Fee
Primary Offering
Common Stock, $0.0001 par value per share	8,566,666	(2)	$	3.70	(3)	$	31,696,665	$	2,939
Secondary Offering
Common Stock, $0.0001 par value per share	124,749,204	(4)	$	3.70		$	461,572,055	$	42,788
Warrants to purchase Common Stock	233,333	(5)		—			—		—	(6)
Total						$	493,268,720	$	45,727

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(1) Pursuant to Rule 416(a), there are also being registered an indeterminable number of additional securities as may be issued to prevent dilution resulting from share splits, share dividends or similar transactions.

(2) Consists of the primary issuance of up to 8,566,666 shares of Common Stock, consisting of up to (i) 233,333 shares of Common Stock issuable upon the exercise of warrants originally issued in a private placement (the “Private Placement Warrants”) in connection with the initial public offering of Athena Technology Acquisition Corp. (“Athena”) by the holders thereof and (ii) 8,333,333 shares of Common Stock issuable upon the exercise of the public warrants originally issued in the initial public offering of Athena (the “Public Warrants” and together with the Private Placement Warrants, the “Warrants”) by the holders thereof.

(3) Pursuant to Rule 457(c) under the Securities Act, and solely for the purpose of calculating the registration fee, the proposed maximum offering price per share is $3.70, which is the average of the high and low prices of the Common Stock on January 21, 2022 on The New York Stock Exchange.

(4) Consists of up to 124,749,204 issued and outstanding shares of Common Stock registered for resale by the selling securityholders named in this registration statement, comprising up to (i) 16,500,000 shares of common stock issued pursuant to subscription agreements entered into on July 6, 2021 (the “PIPE Shares”), (ii) 8,566,667 Founder Shares (as defined below), (iii) 510,000 shares initially issued to Athena Technology Sponsor LLC (“Sponsor”), (iv) 700,000 shares of common stock issued in a private placement to the Sponsor in connection with the initial public offering of Athena, (v) 233,333 shares of Common Stock issuable upon the exercise of the Private Placement Warrants and (vi) 98,239,204 shares of common stock pursuant to that certain Registration Rights and Lock-Up Agreement, dated December 30, 2021, between us and the selling securityholders granting such holders registration rights with respect to such securities.

(5) Represents the resale by the selling securityholders named in this registration statement of the whole Private Placement Warrants, which were issued on March 19, 2021 and will become exercisable on January 29, 2022.

(6) In accordance with Rule 457(i), the entire registration fee for the Warrants is allocated to the shares of Common Stock underlying the Warrants, and no separate fee is payable for the Warrants.

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment that specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act or until the registration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

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The information in this preliminary prospectus is not complete and may be changed. Neither we nor the selling securityholders may sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION — DATED JANUARY 24, 2022

PRELIMINARY PROSPECTUS

Up to 124,749,204 Shares of Common Stock
Up to 8,566,666 Shares of Common Stock Issuable Upon Exercise of Warrants
Up to 233,333 Warrants to Purchase Common Stock

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This prospectus relates to the issuance by us of an aggregate of up to 8,566,666 shares of our common stock, $0.0001 par value per share (“Common Stock”), which consists of up to (i) 233,333 shares of Common Stock issuable upon the exercise of 700,000 warrants (the “Private Placement Warrants”) originally issued in a private placement in connection with the initial public offering of Athena Technology Acquisition Corp. (“Athena”) by the holders thereof and (ii) 8,333,333 shares of Common Stock issuable upon the exercise of 8,333,333 warrants (the “Public Warrants” and, together with the Private Placement Warrants, the “Warrants”) originally issued in the initial public offering of Athena by the holders thereof. We will receive the proceeds from the exercise of any Warrants for cash.

This prospectus also relates to the offer and sale from time to time by the selling securityholders named in this prospectus (the “Selling Securityholders”) of (i) up to 124,749,204 shares of Common Stock (including up to 16,500,000 shares of common stock issued pursuant to subscription agreements entered into on July 6, 2021 (the “PIPE Shares”) and up to 233,333 shares of Common Stock issuable upon the exercise of the Private Placement Warrants) and (ii) up to 233,333 whole Private Placement Warrants. We will not receive any proceeds from the sale of shares of Common Stock or Warrants by the Selling Securityholders pursuant to this prospectus. However, we will pay the expenses, other than underwriting discounts and commissions and expenses incurred by the Selling Securityholders, for brokerage, accounting, tax or legal services or any other expenses incurred by the Selling Securityholders in disposing of the securities associated with the sale of securities pursuant to this prospectus.

Our registration of the securities covered by this prospectus does not mean that the Selling Securityholders will offer or sell any of the shares of Common Stock or Warrants. The Selling Securityholders may offer, sell or distribute all or a portion of their shares of Common Stock or Warrants publicly or through private transactions at prevailing market prices or at negotiated prices. We will not receive any proceeds from the sale of shares of Common Stock or Warrants by the Selling Securityholders pursuant to this prospectus. We provide more information about how the Selling Securityholders may sell the shares of Common Stock or Warrants in the section entitled “Plan of Distribution.”

We are an “emerging growth company” as defined in Section 2(a) of the Securities Act of 1933, as amended, and are subject to reduced public company reporting requirements. This prospectus complies with the requirements that apply to an issuer that is an emerging growth company.

Our Common Stock and Public Warrants are listed on The New York Stock Exchange (“NYSE”) under the symbols “HLGN” and “HLGNW,” respectively. On January 21, 2022, the closing price of our Common Stock was $3.60 and the closing price for our Public Warrants was $0.62.

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See the section entitled “Risk Factors” beginning on page 6 of this prospectus to read about factors you should consider before buying our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is , 2022.

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TABLE OF CONTENTS

		Page
ABOUT THIS PROSPECTUS		ii
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS		iii
PROSPECTUS SUMMARY		1
THE OFFERING		5
RISK FACTORS		6
USE OF PROCEEDS		27
DETERMINATION OF OFFERING PRICE		28
MARKET INFORMATION FOR COMMON STOCK AND DIVIDEND POLICY		29
SELECTED CONSOLIDATED HISTORICAL FINANCIAL INFORMATION OF HELIOGEN		30
SELECTED HISTORICAL FINANCIAL INFORMATION OF ATHENA		32
UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION		33
MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS		42
BUSINESS		52
MANAGEMENT		59
EXECUTIVE COMPENSATION		67
CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS		74
PRINCIPAL SECURITYHOLDERS		77
SELLING SECURITYHOLDERS		79
DESCRIPTION OF SECURITIES		84
MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES		94
PLAN OF DISTRIBUTION		99
LEGAL MATTERS		102
EXPERTS		102
WHERE YOU CAN FIND MORE INFORMATION		102
INDEX TO FINANCIAL STATEMENTS		F-1
PART II INFORMATION NOT REQUIRED IN PROSPECTUS		II-1
EXHIBIT INDEX		II-3
SIGNATURES		II-7

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You should rely only on the information provided in this prospectus, as well as the information incorporated by reference into this prospectus and any applicable prospectus supplement. Neither we nor the Selling Securityholders have authorized anyone to provide you with different information. Neither we nor the Selling Securityholders are making an offer of these securities in any jurisdiction where the offer is not permitted. You should not assume that the information in this prospectus or any applicable prospectus supplement is accurate as of any date other than the date of the applicable document. Since the date of this prospectus and the documents incorporated by reference into this prospectus, our business, financial condition, results of operations and prospects may have changed.

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement on Form S-1 that we filed with the Securities and Exchange Commission (the “SEC”) using the “shelf” registration process. Under this shelf registration process, the Selling Securityholders may, from time to time, sell the securities offered by them described in this prospectus. We will not receive any proceeds from the sale by such Selling Securityholders of the securities offered by them described in this prospectus. This prospectus also relates to the issuance by us of the shares of Common Stock issuable upon the exercise of any Warrants. We will not receive any proceeds from the sale of shares of Common Stock underlying the Warrants pursuant to this prospectus, except with respect to amounts received by us upon the exercise of the Warrants for cash.

Neither we nor the Selling Securityholders have authorized anyone to provide you with any information, or to make any representations other than those contained in this prospectus or any applicable prospectus supplement or any free writing prospectuses prepared by or on behalf of us or to which we have referred you. Neither we nor the Selling Securityholders take responsibility for, or provide any assurance as to the reliability of, any other information that others may give you. Neither we nor the Selling Securityholders will make an offer to sell these securities in any jurisdiction where the offer or sale is not permitted.

We may also provide a prospectus supplement or post-effective amendment to the registration statement to add information to, or update or change information contained in, this prospectus. You should read both this prospectus and any applicable prospectus supplement or post-effective amendment to the registration statement together with the additional information to which we refer you in the sections of this prospectus entitled “Where You Can Find More Information.”

On December 30, 2021, as contemplated by the business combination agreement dated July 6, 2021 (the “Merger Agreement”), by and among Athena, HelioMax Merger Sub, Inc., a Delaware corporation and a direct wholly owned subsidiary of Athena (“Merger Sub”), and Heliogen, Inc., a Delaware corporation (“Legacy Heliogen”), consummated the merger transactions contemplated by the Merger Agreement, whereby (i) Merger Sub merged with and into Legacy Heliogen, the separate corporate existence of Merger Sub ceased and Legacy Heliogen became the surviving corporation and a wholly owned subsidiary of Athena (“Heliogen,” and such transaction the “Merger” or the “Business Combination”) and (ii) Athena changed its name to Heliogen, Inc.

Unless the context indicates otherwise, references in this prospectus to the “Company,” “Heliogen,” “we,” “us,” “our” and similar terms refer to Heliogen, Inc. (f/k/a Athena Technology Acquisition Corp.) and its consolidated subsidiaries (including Legacy Heliogen). References to “Athena” refer to our predecessor company prior to the consummation of the Business Combination.

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). We have based these forward-looking statements on our current expectations and projections about future events. All statements, other than statements of present or historical fact included in this prospectus regarding our future financial performance, as well as our strategy, future operations, financial position, estimated revenues, and losses, projected costs, prospects, plans and objectives of management are forward-looking statements. Any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “will,” “would” or the negative of such terms or other similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain such identifying words. These forward-looking statements are based on management’s current expectations, assumptions, hopes, beliefs, intentions and strategies regarding future events and are based on currently available information as to the outcome and timing of future events. We caution you that these forward-looking statements are subject to all of the risks and uncertainties, most of which are difficult to predict and many of which are beyond our control, incident to our business.

As a result of a number of known and unknown risks and uncertainties, our actual results or performance may be materially different from those expressed or implied by these forward-looking statements. Some factors that could cause actual results to differ include:

• our ability to recognize the anticipated benefits of the business combination, which may be affected by, among other things, our ability to grow and manage growth profitably;

• costs related to the business combination;

• our financial and business performance, including risk of uncertainty in our financial projections and business metrics and any underlying assumptions thereunder;

• changes in our strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects and plans;

• our ability to execute our business model, including market acceptance of our planned products and services and achieving sufficient production volumes at acceptable quality levels and prices;

• changes in domestic and foreign business, market, financial, political, legal conditions and applicable laws and regulations;

• our ability to grow market share in our existing markets or any new markets we may enter;

• our ability to achieve and maintain profitability in the future;

• our ability to access sources of capital to finance operations, growth and future capital requirements;

• our ability to maintain and enhance our products and brand, and to attract and retain customers;

• our ability to find new partners for product offerings;

• the success of strategic relationships with third parties;

• our ability to scale in a cost-effective manner;

• developments and projections relating to our competitors and industry;

• the effects of the COVID-19 pandemic, such as supply chain disruptions, on our business;

• our expectations regarding our ability to obtain and maintain intellectual property protection and not infringe on the rights of others;

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• expectations regarding the time during which we will be an emerging growth company under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), as amended;

• our ability to find and retain critical employee talent;

• the possibility that we may be adversely impacted by other economic, business, and/or competitive factors;

• future exchange and interest rates;

• the outcome of any known and unknown litigation and regulatory proceedings; and

• other risks and uncertainties, including those under the section titled “Risk Factors” in this prospectus, and other filings that have been made or will be made with the SEC by the Company.

Given these risks and uncertainties, you should not place undue reliance on these forward-looking statements. Additional cautionary statements or discussions of risks and uncertainties that could affect our results or the achievement of the expectations described in forward-looking statements may also be contained in any accompanying prospectus supplement.

Should one or more of the risks or uncertainties described in this prospectus, or should underlying assumptions prove incorrect, actual results and plans could differ materially from those expressed in any forward-looking statements. Additional information concerning these and other factors that may impact the operations and projections discussed herein can be found in the section entitled “Risk Factors” and in our periodic filings with the SEC. Our SEC filings are available publicly on the SEC’s website at www.sec.gov.

You should read this prospectus and any accompanying prospectus supplement completely and with the understanding that our actual future results, levels of activity and performance as well as other events and circumstances may be materially different from what we expect. We qualify all of our forward-looking statements by these cautionary statements.

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PROSPECTUS SUMMARY

This summary highlights selected information appearing in this prospectus. Because it is a summary, it may not contain all of the information that may be important to you. To understand this offering fully, you should read this entire prospectus carefully, including the information set forth in the sections entitled “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” “Unaudited Pro Forma Condensed Combined Financial Information,” “Business” and the consolidated financial statements and related notes included elsewhere in this prospectus before making an investment decision.

The Company

Heliogen, Inc., a Pasadena, CA-based company founded in 2013, is a leader in next generation concentrated solar power (“CSP”). We are developing a modular, A.I.-enabled, concentrated solar power plant that will use an array of mirrors to reflect sunlight and capture, concentrate and convert it into cost-effective energy on demand. This characteristic distinguishes our solution from clean energy provided by typical photovoltaic (“PV”) and wind installations which are only able to produce energy intermittently. Our unique system will have the ability to cost-effectively generate temperatures that can exceed 1,000 degrees centigrade. The system will be configurable for several applications, including the carbon-free generation of clean power (electricity), industrial-grade heat (to power industrial processes), and green hydrogen, based on a customer’s needs.

Although the process of concentrating sunlight is not new, Heliogen has developed innovations which we believe fundamentally improve its potential. We believe we are the first technology provider with the ability to deliver cost-effective renewable energy capable of replacing fossil fuels used in industrial processes that generally operate 24/7. In addition, we believe our disruptive, patented design and A.I. technology will address a fundamental problem confronted by many renewable sources of energy: intermittency. An intermittent power supply does not match the grid’s continuous power demand. Without storage, wind and PV-based renewable energy generation may rapidly fluctuate between over-supply and under-supply based on resource availability. As the grid penetration of intermittent resources increases, these fluctuations may become increasingly extreme. We believe our technology will contribute to solving this problem. Our solar plants will have the ability to store very high temperature energy in solid media. This energy will then be releasable evenly, including during times without sunlight, to cost-effectively deliver near 24/7 carbon-free energy in the form of heat, electric power or green hydrogen fuel.

The three use categories will be configured as follows, forming the backbone of three business lines:

HelioHeat — The production of heat for use in industrial processes will be enabled by the baseline system.

HelioPower — With the baseline system as the foundation, the addition of a turbine generator system will then enable power generation.

HelioFuel — Building on the power system described above, hydrogen fuel production will be enabled by further adding an electrolyzer system to the baseline system.

For the power and hydrogen systems, Heliogen is developing a supercritical CO2 system to enhance production efficiency. Using supercritical CO2 is predicted by the U.S. Department of Energy to have “significantly lower capital costs than equivalent steam-cycle components, due to their compact footprint stemming from the higher energy density of the supercritical fluid.”

For more information, see the sections entitled “Business” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Background

We were previously known as Athena Technology Acquisition Corp. On December 30, 2021, as contemplated by the Merger Agreement by and among Athena, Merger Sub and Legacy Heliogen, we consummated the merger transactions contemplated by the Merger Agreement, whereby Merger Sub merged with and into Legacy Heliogen, the separate corporate existence of Merger Sub ceased, and Legacy Heliogen became the surviving corporation and a wholly owned subsidiary of Heliogen. As a result of the Merger, among other things, all outstanding shares of common stock of Legacy Heliogen (“Legacy Heliogen Common Stock”) as of immediately prior to the consummation of the Business Combination (“Closing”), together with shares of Legacy Heliogen Common Stock reserved in respect

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of Legacy Heliogen Awards (as defined below and as described further in the immediately succeeding paragraph) outstanding as of immediately prior to the Closing or resulting from the conversion of shares of Legacy Heliogen’s preferred stock and that were converted into awards based on shares of Common Stock, were cancelled in exchange for the right to receive, or the reservation of, an aggregate of approximately 154.8 million shares of Common Stock (at a deemed value of $10.00 per share) or, as applicable, shares underlying awards based on Common Stock. With respect to the Legacy Heliogen Awards, all (i) options to purchase shares of Legacy Heliogen Common Stock, (ii) restricted stock units based on shares of Legacy Heliogen Common Stock and (iii) restricted shares of Legacy Heliogen Common Stock outstanding as of immediately prior to the Merger were converted into (a) options to purchase shares of Common Stock, (b) RSUs and (c) restricted shares of Common Stock, respectively.

At the Closing, (1) each of the then issued and outstanding shares of Athena Class A common stock converted automatically, on a one-for-one basis, into one share of Common Stock; (2) each then issued and outstanding Athena warrant converted automatically into a Warrant; and (3) each of the then issued and outstanding Athena units were cancelled, and each holder received one share of Common Stock and one-third of one Warrant.

On December 30, 2021 (the “Closing Date”), and in connection with the Closing, Athena changed its name to Heliogen, Inc. Legacy Heliogen was deemed to be the accounting acquirer in the Business Combination based on an analysis of the criteria outlined in U.S. GAAP Accounting Standards Codification 805. While Athena was the legal acquirer in the Business Combination, because Legacy Heliogen was deemed the accounting acquirer, the historical financial statements of Legacy Heliogen became the historical financial statements of the combined company, upon the Closing.

Risks Associated with Our Business

Our ability to implement our business strategy is subject to numerous risks that you should be aware of before making an investment decision. These risks are described more fully in the section entitled “Risk Factors,” immediately following this prospectus summary. These risks include the following, among others:

• If demand for our concentrated solar energy solutions does not develop as we expect, our revenues may suffer, and our business may be harmed.

• Our modular, AI-enabled, concentrated solar power plants may not generate expected output levels.

• We may not be able to develop technologies and products to satisfy changes in customer demand or industry standards, and our competitors could develop products that decrease the demand for our products.

• If we fail to win new contracts and purchase orders, our business operations and financial results may be adversely affected.

• If we are not able to successfully manage our growth strategy, our business operations and financial results may be adversely affected.

• Legislative or regulatory actions relating to renewable energy may impact demand for our services.

• An increase in the prices of certain materials and commodities used in our business could adversely affect our business.

• We may be unable to complete or operate our projects on a profitable basis or as we have committed to our customers.

• The development of our modular, AI-enabled, concentrated solar power plants will require significant capital, which our customers may finance through third parties, and such financing may not be available to our customers on favorable terms, if at all.

• We may require significant additional capital to pursue our growth strategy, but we may not be able to obtain additional financing on acceptable terms or at all.

• Project development or construction activities may not be successful, and we may make significant investments without first obtaining project financing, which could increase our costs and impair our ability to recover our investments.

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• We have a history of operating losses, and expect to incur significant additional expenses and operating losses.

• Our revenue, expenses, and operating results may fluctuate significantly.

• Failure of third parties to manufacture quality products or provide reliable services in a timely manner could cause delays in the delivery of our services and completion of our projects, which could damage our reputation, have a negative impact on our relationships with our customers and adversely affect our growth.

• Our estimates of market opportunity and forecasts of market growth may prove to be inaccurate.

• Our business will depend on experienced and skilled personnel and substantial specialty subcontractor resources, and if we lose key personnel or if we are unable to attract and integrate additional skilled personnel, it will be more difficult for us to manage our business and complete projects.

• We expect to operate in a highly competitive industry, and our current or future competitors may be able to compete more effectively than we do, which could have a material adverse effect on our business, revenues, growth rates and market share.

• Our business benefits in part from federal, state, provincial and local government support for renewable energy, and a decline in such support could harm our business.

• International expansion is one of our growth strategies, and our potential expansion into international markets may expose our business and operations to additional risks that we do not or will not face in the United States, which could have an adverse effect on our operating results.

• An inability to protect our intellectual property could negatively affect our ability to compete, our business, and our results of operations.

• We have identified material weaknesses in our internal control over financial reporting. If we are unable to remediate these material weaknesses, or if we identify additional material weaknesses in the future or otherwise fail to maintain an effective system of internal control over financial reporting, this may result in material misstatements of our consolidated financial statements or cause us to fail to meet our periodic reporting obligations.

• Opportunities associated with government contracts could lead to increased governmental regulation applicable to us.

• Certain of our facilities are or may be located in regions that may be affected by extreme weather conditions and natural disasters.

• Computer malware, viruses, ransomware, hacking, phishing attacks and other network disruptions could result in security and privacy breaches, loss of proprietary information and interruption in service, which would harm our business.

Corporate Information

Athena was a blank check or “special purpose acquisition” company, incorporated as a Delaware corporation on December 8, 2020, and formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. Athena completed its initial public offering in March 2021. HelioMax Merger Sub, a Delaware corporation, was a wholly-owned subsidiary of Athena, formed by Athena on May 27, 2021 to consummate the Business Combination. On December 30, 2021, HelioMax Merger Sub merged with and into Legacy Heliogen, whereupon the separate corporate existence of Merger Sub ceased with Legacy Heliogen continuing as the surviving corporation and a subsidiary of Athena. On the Closing Date, and in connection with the Closing, Athena changed its name to Heliogen, Inc. The mailing address of our principal executive office is 130 West Union St., Pasadena, California 91103. Our telephone number is (626) 720-4530.

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Implications of Being an Emerging Growth Company and a Smaller Reporting Company

We are an emerging growth company as defined in the JOBS Act. We will remain an emerging growth company under the JOBS Act until the earliest of (a) the last day of our first fiscal year following the fifth anniversary of Athena’s initial public offering, (b) the last date of our fiscal year in which we have total annual gross revenue of at least $1.07 billion, (c) the date on which we are deemed to be a “large accelerated filer” under the rules of the SEC with at least $700.0 million of outstanding securities held by non-affiliates or (d) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the previous three years.

We are also a “smaller reporting company” as defined in the Exchange Act. We may continue to be a smaller reporting company even after we are no longer an emerging growth company. We may take advantage of certain of the scaled disclosures available to smaller reporting companies and will be able to take advantage of these scaled disclosures as long as the market value of our voting and non-voting common stock held by non-affiliates is less than $250.0 million measured on the last business day of our second fiscal quarter, or our annual revenue is less than $100.0 million during the most recently completed fiscal year and the market value of our voting and non-voting common stock held by non-affiliates is less than $700.0 million measured on the last business day of our second fiscal quarter.

As a result, the information in this prospectus and that we provide to our investors in the future may be different than what you might receive from other public reporting companies.

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THE OFFERING

Issuer		Heliogen, Inc. (f/k/a Athena Technology Acquisition Corp.).
Issuance of Common Stock
Shares of Common Stock Offered by us		8,566,666 shares of Common Stock, consisting of (i) 233,333 shares of Common Stock issuable upon the exercise of the Private Placement Warrants by the holders thereof and (ii) 8,333,333 shares of Common Stock issuable upon the exercise of 8,333,333 Public Warrants by the holders thereof.
Shares of Common Stock Outstanding Prior to Exercise of All Warrants		183,367,037 shares (as of December 30, 2021).
Shares of Common Stock Outstanding Assuming Exercise of All Warrants		191,933,703 shares (based on total shares outstanding as of December 30, 2021).
Exercise Price of Warrants		$11.50 per share, subject to adjustment as described herein.
Use of Proceeds		We will receive up to an aggregate of approximately $98.5 million from the exercise of the Warrants, assuming the exercise in full of all of the Warrants for cash. We expect to use the net proceeds from the exercise of the Warrants for general corporate purposes. See the section entitled “Use of Proceeds.”
Resale of Common Stock and Warrants
Shares of Common Stock Offered by the Selling Securityholders		We are registering the resale by the selling securityholders named in this prospectus, or their permitted transferees of an aggregate of 124,749,204 shares of Common Stock, comprising up to (i) 16,500,000 PIPE Shares, (ii) 8,566,667 Founder Shares (as defined below), (iii) 510,000 shares issued to Athena Technology Sponsor LLC (the “Sponsor”), (iv) 700,000 shares of common stock issued in a private placement to the Sponsor in connection with the initial public offering of Athena, (v) 233,333 shares of Common Stock issuable upon the exercise of the Private Placement Warrants) and (vi) 98,239,204 shares of common stock pursuant to that certain Registration Rights and Lock-Up Agreement, dated December 30, 2021, between us and the selling securityholders granting such holders registration rights with respect to such securities.
Warrants Offered by the Selling Securityholders		233,333 whole Private Placement Warrants.
Redemption		The Warrants are redeemable in certain circumstances. See the section entitled “Description of our Securities — Warrants” for further discussion.
Terms of the offering		The selling securityholders will determine when and how they will dispose of the securities registered for resale under this prospectus.
Use of Proceeds		We will not receive any proceeds from the sale of shares of Common Stock or Warrants by the Selling Securityholders.
Lock-Up Restrictions		Stockholders holding approximately 102.4 million shares of our Common Stock are subject to certain restrictions on transfer until the termination of applicable lock-up periods. See the section entitled “Certain Relationships and Related Party Transactions — Lock-Up Agreements” for additional information.
Market for Common Stock and Warrants		Our Common Stock and Public Warrants are currently traded on NYSE under the symbols “HLGN” and “HLGNW,” respectively.
Risk Factors		See the section entitled “Risk Factors” and other information included in this prospectus for a discussion of factors you should consider before investing in our securities.

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RISK FACTORS

Investing in our securities involves risks. Before you make a decision to buy our securities, in addition to the risks and uncertainties discussed above under “Cautionary Note Regarding Forward-Looking Statements,” you should carefully consider the specific risks set forth herein. If any of these risks actually occur, it may materially harm our business, financial condition, liquidity and results of operations. As a result, the market price of our securities could decline, and you could lose all or part of your investment. Additionally, the risks and uncertainties described in this prospectus or any prospectus supplement are not the only risks and uncertainties that we face. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may become material and adversely affect our business.

Summary of Risks:

Our business is subject to a number of risks of which you should be aware before making a decision to invest in our Common Stock. These risks include, among others, the following: