Company: MLAC
Filing Date: 2025-10-07
Form Type: 425
Source: 0001213900-25-097100
Chunk: 21

Company: Mountain Lake Acquisition Corp.
Filing Date: 2025-10-07
Form: 425
Chunk 21
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5, by and among the Company, Pubco, Avalanche                                      
 BVI and Avalanche Cayman                                                                                                           |
| 104         |     | Cover Page Interactive Data File (embedded within the Inline XBRL document)                                                        |

| + | Certain schedules, exhibits and similar attachments have been omitted pursuant to Item 601(a)(5) of Regulation S-K. SPAC will provide a copy of such omitted materials to the Securities and Exchange Commission or its staff upon request. |

| † | Certain personally identifiable information has been omitted from this exhibit pursuant to Item 601(a)(6) of Regulation S-K. |

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SIGNATURE</div>

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.

| Date: October 7, 2025 | MOUNTAIN LAKE ACQUISITION CORP. 
 By:                             | /s/ Paul Grinberg                                        |
|:----------------------|:--------------------------------|:---------------------------------------------------------|
|                       |                                 | Name: Paul Grinberg                                      |
|                       |                                 | Title: Chief Executive Officer and Chairman of the Board |

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