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<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><b>UNITED STATES</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><b>SECURITIES AND EXCHANGE COMMISSION</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><b>Washington, D.C. 20549</b></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><b>FORM <span id="xdx_906_edei--DocumentType_c20250415__20250415_zzcWzBvUeVhd"><ix:nonNumeric contextRef="AsOf2025-04-15" id="Fact000009" name="dei:DocumentType">8-K</ix:nonNumeric></span></b></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><b>CURRENT REPORT</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><b>Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934</b></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Date of Report (Date of earliest event reported):
<span id="xdx_909_edei--DocumentPeriodEndDate_c20250415__20250415_z1TXPBzBaTgc"><ix:nonNumeric contextRef="AsOf2025-04-15" format="ixt:datemonthdayyearen" id="Fact000010" name="dei:DocumentPeriodEndDate">April 15, 2025</ix:nonNumeric></span></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Exact name of registrant as specified in its charter)</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><span style="font-size: 10pt">(Address of Principal Executive Offices)</span></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligations of the registrant under any of the following provisions:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Securities registered pursuant to Section 12(b) of the Act:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

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    <td style="border-bottom: Black 1.5pt solid; vertical-align: bottom; text-align: center; width: 32%"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><b>Name
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Indicate by check mark whether the registrant
is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the
Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter).</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Emerging growth company <span id="xdx_909_edei--EntityEmergingGrowthCompany_c20250415__20250415_z4uwJDMzB7hg"><ix:nonNumeric contextRef="AsOf2025-04-15" format="ixt:booleantrue" id="Fact000025" name="dei:EntityEmergingGrowthCompany">&#9746;</ix:nonNumeric></span><span style="font-family: Wingdings"></span></p>



<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">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. <span id="xdx_90C_edei--EntityExTransitionPeriod_c20250415__20250415_z1msypGcSPRl"><ix:nonNumeric contextRef="AsOf2025-04-15" format="ixt:booleantrue" id="Fact000026" name="dei:EntityExTransitionPeriod">&#9746;</ix:nonNumeric></span></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b>Item 1.01 Entry into a Material Definitive Agreement.</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><span style="background-color: white">The information
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into this Item 1.01 by reference.</span></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><b>Item 3.03 Material Modification to Rights of
Security Holders.</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">On April 14, 2025, Heliogen, Inc. (the &#8220;Company&#8221;)
entered into Amendment No. 3 (the &#8220;Amendment&#8221;) to the Rights Agreement, dated as of April 16, 2023, by and between the Company
and Continental Stock Transfer &amp; Trust Company, as rights agent (as amended by that certain Amendment No. 1, dated as of April 16,
2024, and by that certain Amendment No. 2 dated as of December 17, 2024, the &#8220;Rights Agreement&#8221;)<span style="background-color: white">.
</span></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The Amendment extends the Final Expiration Date
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otherwise remains unmodified and in full force and effect in accordance with its terms.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The foregoing description of the Amendment does
not purport to be complete and is qualified in its entirety by reference to the complete text of the Amendment, a copy of which is filed
as Exhibit 4.1 to this Current Report on Form 8-K and incorporated by reference into this Item 3.03.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b>Item 9.01 Financial Statements and Exhibits.</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(d) Exhibits.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

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 Number</b></span></td>
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    <td style="border-bottom: Black 1.5pt solid; width: 90%; font-size: 10pt"><span style="font-size: 10pt"><b>Description</b></span></td></tr>
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    <td style="text-align: left; font-size: 10pt; vertical-align: top"><span style="font-size: 10pt">4.1</span></td>
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    <td style="text-align: justify; font-size: 10pt"><span style="font-size: 10pt"><a href="ea023834501ex4-1_heliogen.htm">Amendment No. 3, dated as of April 14, 2025, to Rights Agreement, dated as of April 16, 2023, by and between Heliogen, Inc. and Continental Stock Transfer &amp; Trust Company, as rights agent.</a></span></td></tr>
  <tr style="vertical-align: bottom; background-color: White">
    <td style="font-size: 10pt"><span style="font-size: 10pt">104</span></td>
    <td style="font-size: 10pt">&#160;</td>
    <td style="font-size: 10pt"><span style="font-size: 10pt">Cover Page Interactive Data File (embedded within the Inline XBRL document).</span></td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>SIGNATURES</b></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">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 thereunto duly authorized.</p>

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    <td style="width: 4%">&#160;</td>
    <td style="vertical-align: top; width: 36%"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><b>Heliogen, Inc.</b></span></td></tr>
  <tr>
    <td>&#160;</td>
    <td>&#160;</td>
    <td>&#160;</td></tr>
  <tr>
    <td style="vertical-align: bottom"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Dated: April 15,
    2025</span></td>
    <td style="vertical-align: top"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</span></td>
    <td style="border-bottom: Black 1.5pt solid; vertical-align: top"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Christiana Obiaya</span></td></tr>
  <tr>
    <td>&#160;</td>
    <td>&#160;</td>
    <td style="vertical-align: top"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><b>Christiana Obiaya</b></span></td></tr>
  <tr>
    <td>&#160;</td>
    <td>&#160;</td>
    <td style="vertical-align: top"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Chief Executive Officer </span></td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">2</p>

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