Company: MLAC
Filing Date: 2025-11-21
Form Type: 425
Source: 0001213900-25-113276
Chunk: 0

Company: Mountain Lake Acquisition Corp.
Filing Date: 2025-11-21
Form: 425
Chunk 0
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Filed by Mountain Lake Acquisition Corp.

pursuant to Rule 425 under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934

Subject Company: Mountain Lake Acquisition Corp.

Commission File No. 001-42436

Avalanche Treasury Corporation

Date: November 20, 2025

As previously disclosed, on October 1, 2025, Mountain
Lake Acquisition Corp., a Cayman Islands exempt company (“Mountain Lake” or “SPAC”), and Avalanche Treasury Corporation,
a Delaware corporation (“Pubco”), issued a press release announcing that they had entered into a Business Combination Agreement
(the “Business Combination Agreement”), dated as of October 1, 2025, with Avalanche SPAC Merger Sub LLC, a Delaware limited
liability company (“SPAC Merger Sub”), Avalanche Company Merger Sub LLC, a Delaware limited liability company (the “Company
Merger Sub”), Avalanche Treasury Company LLC, a Delaware limited liability company (“Newco”), and Dragonfly Digital
Management, LLC, a Delaware limited liability company (the “Seller”).

The following communications were made by Pubco
on its X and LinkedIn accounts on November 19, 2025, November 18, 2025, November 17, 2025, November 14, 2025, November 13, 2025, November
11, 2025, November 10, 2025, November 6, 2025, November 5, 2025 and November 3, 2025:

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The following communications were made by Pubco
on its X and LinkedIn accounts on October 29, 2025, October 27, 2025, October 23, 2025, October 20, 2025, October 17, 2025, October 15,
2025, October 13, 2025, October 9, 2025 and October 2, 2025:

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The following communication was made by Emin Gun Sirer, Member of the
Advisory Board of Pubco, from his X account on November 11, 2025, October 4, 2025 and October 2, 2025:

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The