UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-43075 Mountain Lake Acquisition Corp. II Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if ...

Core Viewpoint - Mountain Lake Acquisition Corp. II announced that starting March 19, 2026, holders of units from its initial public offering can separately trade Class A ordinary shares and warrants, with trading symbols "MLAA" for shares and "MLAAW" for warrants [1] Group 1: Company Overview - Mountain Lake Acquisition Corp. II is a blank check company, also known as a special purpose acquisition company (SPAC), established to effectuate mergers, amalgamations, share exchanges, asset acquisitions, share purchases, reorganizations, or similar business combinations with one or more businesses [2] Group 2: Trading Information - The Class A ordinary shares and warrants that are separated will trade on the Nasdaq Global Market under the symbols "MLAA" and "MLAAW," while units that are not separated will continue to trade under the symbol "MLAAU" [1]

Company Overview - Mountain Lake Acquisition Corp. II is a special purpose acquisition company (SPAC) formed to effect a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization, or similar business combination with one or more businesses [5] IPO Details - The company announced the closing of its upsized initial public offering (IPO) of 36,000,000 units, which includes 4,680,000 units from the partial exercise of the underwriters' over-allotment option, at an offering price of $10.00 per unit, resulting in gross proceeds of $360,000,000 [1] - The units began trading on the Nasdaq under the ticker symbol "MLAAU" on January 27, 2026, with each unit consisting of one Class A ordinary share and one-half of one redeemable warrant [2] - Each whole warrant allows the holder to purchase one Class A ordinary share at $11.50 per share, with only whole warrants being traded upon separation of the units [2] Underwriting and Regulatory Information - BTIG, LLC is acting as the sole book-running manager for the offering [3] - A registration statement for the securities sold in the IPO was declared effective by the U.S. Securities and Exchange Commission (SEC) on January 26, 2026 [3]

Group 1 - The Company, Mountain Lake Acquisition Corp. II, has announced the pricing of its upsized initial public offering (IPO) of 31,320,000 units at an offering price of $10.00 per unit, with each unit consisting of one Class A ordinary share and one-half of one redeemable warrant [1] - Each whole warrant will allow the holder to purchase one Class A ordinary share at a price of $11.50 per share, and the units are expected to trade on Nasdaq under the ticker symbol "MLAAU" starting January 27, 2026 [1] - The Company has granted the underwriter, BTIG, LLC, a 45-day option to purchase up to an additional 4,698,000 units at the IPO price to cover over-allotments [2] Group 2 - The offering is expected to close on January 28, 2026, subject to customary closing conditions [2] - A registration statement for the securities sold in the IPO was declared effective by the U.S. Securities and Exchange Commission (SEC) on January 26, 2026, and the offering is being made only by means of a prospectus [3] - Mountain Lake Acquisition Corp. II is a special purpose acquisition company (SPAC) formed to effect a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization, or similar business combination with one or more businesses [5]

As filed with the U.S. Securities and Exchange Commission on January 20, 2026. Registration No. 333-291833 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ___________________ AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ___________________ Mountain Lake Acquisition Corp. II (Exact name of registrant as specified in its charter) ___________________ | (State or other jurisdiction of | | --- | | incorporation or organization) | Cayman Islands 6770 ...

Group 1 - The US IPO market experienced a quiet week due to the Thanksgiving holiday, with two blank check companies going public and several others filing initial applications [1][3] - Soulpower Acquisition announced a merger with SWB Holdings, with a proposed valuation of $8.1 billion, marking one of the largest merger announcements of the year [1] - Two SPACs completed pricing, with Invest Green Acquisition raising $150 million and SC II Acquisition also raising $150 million, both focusing on renewable energy [1] Group 2 - Three SPACs filed for initial public offerings, including Mountain Lake Acquisition II aiming to raise $261 million, Vine Hill Capital II targeting $175 million, and Social Commerce Partners seeking $100 million [2] - Edison Oncology Holding submitted an IPO application to raise $25 million, while Direct Communications Solutions aims to raise $15 million [1][2] - The IPO market is expected to remain relatively calm at the beginning of December, with no pricing plans for the upcoming week, although some issuers may still complete pricing before year-end [3] Group 3 - Medline is anticipated to be a focal point in the IPO market, with an expected raise of $5 billion, which would be the largest IPO in the US since 2021 [3][4] - Other notable potential listings include Klook, Grayscale, and York Space Systems, which have recently submitted preliminary applications [4] - Companies like Hornbeck Offshore Services, Cardinal Infrastructure, and Andersen Group have updated their prospectuses and may go public before the end of the year [4]

As filed with the U.S. Securities and Exchange Commission on November 26, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ___________________ Mountain Lake Acquisition Corp. II (Exact name of registrant as specified in its charter) ___________________ | Cayman Islands | 6770 | 98-1891915 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer ...